Ensure proper physical installation notes are considered,
especially PVDF Installation Temperature Requirements.
Mount the sensor securely using the provided mounting
options.

Electrical Installation:

Refer to the system wiring diagrams and IS use case diagrams for
proper electrical installation procedures.

Removal Instructions:

If you need to remove the sensor, follow the provided removal
instructions carefully to avoid damage.

Chapter 3: Programming

Depending on your model, follow the provided Modbus Programming
or 4-20 mA Programming instructions using the respective software
tools mentioned in the manual.

Chapter 4: Maintenance

Regular maintenance is essential for optimal performance. Follow
the general care guidelines provided in this chapter. In case of
repair needs, refer to the repair and returns section.

Chapter 5: Hazardous Location Installation and
Certification

If installing in hazardous locations, ensure compliance with the
Intrinsically Safe Installation Drawing and Certification
requirements outlined in this chapter.

Frequently Asked Questions (FAQ)

Q: What are the warranty terms for the MPI series
magnetostrictive level sensor?

A: The product is covered by a 24-month warranty against defects
in material and workmanship under normal use and service. For
detailed warranty information, visit the provided link or contact
Technical Support.

Q: Can I install the MPI-F level sensor without following the
specified installation drawing?

A: No, it is crucial to adhere to the provided Intrinsically
Safe Installation Drawing for Hazardous Locations to maintain
safety approvals and ratings. Incorrect installation may void
warranties and jeopardize safety.

“`

View Fullscreen

MPI Magnetostrictive Level Sensors
For the Series MPI-F Intrinsically Safe, Flexible, Stainless Steel and PVDF Stems
User Manual
Doc #9005623 Part #200337 Rev D, 06/2024

CONTENTS

INTRODUCTION

III

WARRANTY AND WARRANTY RESTRICTIONS

CHAPTER 1: SPECIFICATIONS AND OPTIONS

Dimensions

MPI-F/K Shipping Box Contents

Specifications

Model Number Configurator

System Wiring Diagrams and IS Use Case Diagrams

CHAPTER 2: INSTALLATION AND REMOVAL PROCEDURES AND NOTES

Tools Needed

ATEX Stated Conditions of Use

Physical Installation Notes

PVDF Installation Temperature Requirements

Physical Installation Instructions

Electrical Installation

Removal Instructions

CHAPTER 3: PROGRAMMING

Modbus Programming

Modbus Programming with RST-6001 and APG Modbus Software

4-20 mA Programming with RST-4100 and APG Modbus Software

Modbus Register Lists for MPI-F8

MPI-F8 Modbus Sensor Parameters

APG Modbus Register Lists for MPI-F6 and MPI-F7

MPI-F6 and MPI-F7 APG Modbus Sensor Parameters

MPI-F Application Type Parameters

CHAPTER 4: MAINTENANCE

General Care

Repair and Returns

CHAPTER 5: HAZARDOUS LOCATION INSTALLATION AND CERTIFICATION

Intrinsically Safe Installation Drawing for Hazardous Locations

INTRODUCTION
Thank you for purchasing an MPI series magnetostrictive level sensor from APG. We appreciate your business and your trust. Please take a few minutes to familiarize yourself with your MPI and this manual.
The MPI series magnetostrictive level sensor provides highly accurate and repeatable level readings in a wide variety of liquid level measurement applications. It is certified for installation in Class I, Division 1, and Class I, Zone 0 hazardous areas in the US and Canada by CSA, and ATEX and IECEx for Europe and the rest of the world. The MPI-F’s flexible stem allows for installation in tanks up to 50 feet tall, without needing a crane or an extra-long truck and trailer for delivery. APG’s proprietaryPVDF-formulation stem provides increased flexibility and impact resistance during cold-weather installation, along with compatibility in a wider range of corrosive media–including H2S–in larger tanks.
Reading your label Every APG instrument comes with a label that includes the instrument’s model number, part number, and serial number. Please ensure that the part number on your label matches your order. The following electrical ratings and approvals are also listed on the label. Please refer to the product page on APG’s website for relevant certificates.

237484

8-24 VDC, Imax = 280 mA Class I, Division 1, Groups C, D, T4; IP65 Class I, Zone 0, Ex/AEX ia, IIB, T4, Ga Ex ia IIB, T4 ,Ga (Ta = -40°C to 85°C)

Intrinsically Safe Wiring Requirements: Ui= 28 VDC, Ii = 280 mA, Pi = 0.850 W , Li = 3.50 H, Ci = 0.374 F

ATEX Certificate Number: Sira 19ATEX2072X

II 1G Ex ia IIB T4 Ga
Ta: -40°C to 85°C

Ui = 28 V, Ii = 280 mA, Pi = 0.850 W, Li = 3.50 H, Ci = 0.374 F

IECEx SIR 19.0026X Ex ia IIB T4 Ga Ta: -40°C to 85°C

III

IMPORTANT: MPI-F level sensor MUST be installed according to drawing 9009451 (Intrinsically Safe Installation Drawing for Hazardous Locations) on pages 36-37 to meet listed approvals. Faulty installation will invalidate all safety approvals and ratings.
DANGER: OPEN CIRCUIT BEFORE REMOVING COVER or KEEP COVER TIGHT WHILE CIRCUITS ARE ALIVE; AVERTISSEMENT — COUPER LE COURANT AVANT D’ENLEVER LE COUVERCLE, ou GARDER LE COUVERCLE FERME TANT QUE LES CIRCUITS SONT SOUS TENSION. DANGER: WARNING — EXPLOSION HAZARD — SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC SAFETY; AVERTISSEMENT — RISQUE D’EXPLOSION — LA SUBSTITION DE COMPOSANT PEUT AMELIORER LA SECURITE INTRINSIQUE. DANGER: WARNING — EXPLOSION HAZARD — DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN SWITCHED OFF OR THE AREA IS KNOWN TO BE NON-HAZARDOUS; AVERTISSEMENT — RISQUE D’EXPLOSION — AVANT DE DECONNECTER L’EQUIPEMENT, COUPER LE COURANT OU S’ASSURER QUE L’EMPLACEMENT EST DESIGNE NON DANGEREUX.
IMPORTANT: Only the combustion gas detection performance of the instrument has been tested.
WARRANTY AND WARRANTY RESTRICTIONS
This product is covered by APG’s warranty to be free from defects in material and workmanship under normal use and service of the product for 24 months. For a full explanation of our Warranty, please visit https://www.apgsensors.com/resources/warranty-certifications/warranty-returns/. Contact Technical Support to receive a Return Material Authorization before shipping your product back.
IV

CHAPTER 1: SPECIFICATIONS AND OPTIONS
Dimensions MPI-F/B (SS Stem) Sensor Dimensions with 2″Ø Stem Weights

4.25″ [108.0mm] 4.13″ [105.0mm] 3.71″ [94.3mm]

7.03″ [178.6mm]

MEASURABLE LENGTH

TOTAL LENGTH

OPTIONAL SMALL HOUSING

MPI-F/B Float Options

U & V / I & J I&J U&V

S & T

MOUNTING OPTIONS

14.0″ [355.6mm] GROUND SCREW

4.98″ 5.88″

2.80″

3.07″

3.03″ U & V 3.00″ I & J

Y & Z / L & M

W & X

FLOAT(S) 2 in DIA

5.00″

5.50″

MPX-F STEM ASSEMBLY

FLOAT

1″Ø RIGID TUBE LENGTH PER NO. OF WEIGHTS

WEIGHT #2 (AS NEEDED, PER LENGTH)

5.10″

3.08″ Y & Z 2.00″ L & M

Probe Length in Inches

S1 Top Deadband Length

Number & Total Height of 2″Ø Stem Weights

L 96″

6″

4.75″

97″ L 144″ 6″

9.5″

145″ L 192″ 8″

9.5″

193″ L 300″ 8″

14.25″

301″ L

10″

14.25″

Length of 1″Ø Tubing 8″ 8″ 8″ 14″ 14″

Measurable Length = Total Length S1 S2

S1 = Top Deadband

S2 = 1 Float Height + Weight(s) Height + 0.5″

4.75″ [120.7mm]

WEIGHT #1

1.99″ [50.5mm]

MPI-F/B (SS Stem) Sensor Dimensions with 3″Ø Stem Weights

5.00″ [127.0mm] 4.49″ [114.0mm] 4.34″ [110.2mm]

7.03″ [178.6mm]

OPTIONAL LARGE HOUSING

TOTAL LENGTH

MEASURABLE LENGTH

~ 2

WEIGHT #1

WEIGHT #2 (AS NEEDED, PER LENGTH)

FLOAT

14.0″ [355.6mm] GROUND SCREW

8.00″ [203.2mm]

3.00″ [76.2mm] 2.99″ [75.9mm]

MPX-F STEM ASSEMBLY

FLOAT(S) 3 in DIA

MOUNTING OPTIONS

MPI-F/B Float Options

U & V / I & J I&J U&V

S & T

4.98″ 5.88″

2.80″

3.07″

3.03″ U & V 3.00″ I & J
W & X

Y & Z / L & M

5.00″

5.50″

5.10″

3.08″ Y & Z 2.00″ L & M

S1 Top

Number & Total

Probe Length Deadband Height of 3″Ø

in Inches

Length Stem Weights

L 144″

6″

3″

145″ L 192″ 8″

3″

193″ L 300″ 8″

6″

301″ L

10″

6″

Measurable Length = Total Length S1 S2 S1 = Top Deadband
S2 = 1 Float Height + Weight(s) Height + 0.5″

Measurable Length = Total Length S1 S2 S1 = Top Deadband
S2 = 1 Float Height + Weight(s) Height + 0.8625″ 3

20″

15″

10″

5″

Length Weights

Probe Length Deadband Height of Stem

Number & Total

2.00″

H&K

4.92″

3.54″

[125.0 mm] [90.0 mm]

4.25″

[108.0 mm]

HOUSING CONNECTION LOCATION 2x Ø.27″ [6.9 mm] THRU
OPTIONAL SMALL HOUSING 1/2″ NPT CONDUIT OPENING

3.50″

MPI-F/K Float Options

S1 Top

10″

331″ L 516″ 10″

301″ L 330″ 10″

145″ L 300″ 8″

6″

I&J

4.17″ [106.0 mm]

3.7″ [94.0 mm]

5.71″ [145.0mm]

4.33″ [110.0mm]

5.00″ [127.0mm]

HOUSING CONNECTION LOCATION

2x Ø.27 THRU

GROUND SCREW

3/4″ NPT CONDUIT OPENING

MOUNTING OPTION

4.98″

3.00″

in Inches

FLOAT(S)

FLOAT STOP (OPTIONAL)

WEIGHT RETENTION

WEIGHT(S)

L 144″

517″ L

MPI-F/K (PVDF Stem) Sensor Dimensions

7.46″ [189.5mm]

4.96″

[126.0mm]

4.29″ [109.0mm]

HOUSING

HOUSING ADAPTER

TOTAL LENGTH

MEASURABLE LENGTH (PER ORDER)

MPI-F/K Shipping Box Contents

PROBE HOUSING (TYP 2)
PROBE MOUNTING OPTION (TYP 2)

MPI-F/K Shipping Box

10″ (254 mm) MINIMUM
BEND RADIUS
4

FLOATS PER ORDER (TYP 4)
STEM WEIGHT(S) AND DOWEL PIN(S) PER ORDER

Specifications

Performance Resolution
Accuracy
Digital Temp Sensor API 18.2 Temp Sensor

4-20 mA: Modbus: 4-20 mA: Modbus: Accuracy: Accuracy:

Stem Bend Radius (minimum) PVDF:

14 bit DAC (1 mm) 0.04 in. (1 mm) Greater of ±0.05% of FS or 1 mm ±0.04 in. (±1 mm) ±1°C ±0.25°C over -40° to 85° C ±0.13°C over +20° to 70° C 10″ (254 mm)

Environmental Operating Temperature Enclosure Protection Maximum Pressure
Electrical Supply Voltage
Current Draw
Protection

-40° to 185° F (-40° to 85° C) NEMA 4X, IP65 PVDF stem: 300 psi PVDF float:50 psi

Modbus (RS-485): 8-24 VDC on sensor

4-20 mA:

12-24 VDC on sensor

Modbus (RS-485): 15 mA (typical)

4-20 mA:

22 mA single / 44 mA dual (max)

Reverse Polarity and CE compliant to EN 61326

Materials of Construction Housing Stem
Mounting (slide) Compression Fitting (slide) Stem Weights Connectivity Output
Programming RS-485 4-20 mA

Cast aluminum, epoxy coated

Stainless Steel:

7/8″Ø 316L SS Flexible Tubing with Braid

PVDF:

5/8″Ø proprietary formulation PVDF

Flexible Tubing

316L SS

Aluminum with Neoprene bushing

316L SS

Modbus RTU (RS-485), optional temperature sensors 2-wire, loop-powered 4-20 mA 4-wire, loop-powered dual 4-20 mA

Optional RST-6001 USB-to-RS-485 converter Optional RST-4100 programming module

Model Number Configurator

Model Number: MPI _F_ _____ _____ _____ _____ _____ _____ _____ _B_ _____ _____ _____ _2_ _____ _____

AB C

D E

F G HI

L MN O

A. Stem Type F Flexible Tubing

I. Stem Material B 316L SS

B. Output

J. Total Stem Length in Inches

6 Single float, loop-powered 4-20 mA, 2-wire __ Min. 48 in. Max. 384 in.

7 Dual float, loop-powered 4-20 mA, 4-wire

8 Modbus RTU, with optional temperature

K. Temperature Sensor Options

sensors

MPI-F8

C. Housing Type

N None 1D Digital Temperature Sensor A, 12 in. from

All Housing Die-cast Aluminum, NEMA 4X, IP65, Blue

bottom of probe

__ Large Housing

2D Digital Temperature Sensors A, B

A Small Housing

3D Digital Temperature Sensors A, B, C

D. Float 1 (Top Float) Z/Y 5.5h x 3d in. Red Polyurethane (0.65 SG / 0.94
SG) X/W 5 in. Round 316L SS (0.52 SG / 0.92 SG) V/U 6h x 3d in. Oval 316L SS (0.58 SG / 0.94 SG) T/S 3 in. Round 316L SS (0.60 SG / 0.94 SG)

4D 5D 6D 7D AP

Digital Temperature Sensors A, B, C, D Digital Temperature Sensors A, B, C, D, E Digital Temperature Sensors A, B, C, D, E, F Digital Temperature Sensors A, B, C, D, E, F, G Sensor Quantity and Placement per API 18.2 Standard

M/L 5.5h x 2d in. Red Polyurethane (0.57 SG / 0.94 SG)
J/I 5h x 3d in. Oval Titanium 2 (0.60 SG / 0.94 SG)

Note: Temperature sensors B G are spaced evenly between A and probe’s zero reference.

N None

L. Custom Housing-Electrical Connection

E. Float 2 (optional) N None Y 5.5h x 3d in. Blue Polyurethane (0.94 SG) W 5 in. Round 316L SS (0.92 SG) U 6h x 3d in. Oval 316L SS (0.94 SG) S 3 in. Round 316L SS (0.94 SG) L 5.5h x 2d in. Blue Polyurethane (0.94 SG)

N B C D F G M

None Cable Gland (Cable sold separately) 4-pin M12 Micro Connector Female 4-pin M12 Micro Connector Male 90° 4-pin M12 Micro Connector Female 90° 90° Elbow 4-pin M12 Micro Connector Male

I 5h x 3d in. Oval Titanium 2 (0.94 SG)

M. End Plug

F. Mounting Type

2 Keyhole for weight locking pin

P NPT Plug 150# N None

N. Float Stop A3 1-piece top float stop, held with set screw

G. Mounting Size 2 2 in. (welded or slide connection)

F3 2-piece clamp top float stop N None

3 3 in. (slide connection) N None

O. Stem Weights W7 316L SS, 3 lb, 2″Ø x 4.75″H; modular

H. Mounting Connection

W8 316L SS, 5 lb, 3″Ø x 3″H; modular

W Welded (fixed) S Slide with Compression Fitting (adjustable)

Note: This option is standard. Note: Connectors available for use with Small

Housing only. For Large Housing, choose N None.

Model Number: MPI _F_ _____ _____ _____ _____ _____ _____ _____ _K_ _____ _____ ____ _2_ _____ __W6_

AB C

D E

F G HI

LMN O

A. Stem Type F Flexible Tubing

I. Stem Material K Proprietary PVDF formulation

B. Output

J. Total Stem Length in Inches

6 Single float, loop-powered 4-20 mA, 2-wire __ Min. 120 in. Max. 600 in.

7 Dual float, loop-powered 4-20 mA, 4-wire 8 Modbus RTU, with optional temperature

K. Temperature Sensor Options

sensors

MPI-F8

N None

C. Housing Type

1D Digital Temperature Sensor A, 12 in. from

All Housing Die-cast Aluminum, NEMA 4X, IP65, Blue

bottom of probe

__ Large Housing

2D Digital Temperature Sensors A, B

A Small Housing

3D Digital Temperature Sensors A, B, C

4D Digital Temperature Sensors A, B, C, D

D. Float 1 (Top Float)

5D Digital Temperature Sensors A, B, C, D, E

K/H3.5h x 2d in. PVDF (0.58 SG / 0.94 SG)

6D Digital Temperature Sensors A, B, C, D, E, F

J/I 5h x 3d in. Oval Titanium 2 (0.60 SG / 0.94 SG) 7D Digital Temperature Sensors A, B, C, D, E, F, G

N None

AP Sensor Quantity and Placement per API 18.2

Standard

E. Float 2 (optional)

N None H 3.5h x 2d in. PVDF (0.94 SG)

Note: Temperature sensors B G are spaced evenly between A and probe’s zero reference.

I 5h x 3d in. Oval Titanium 2 (0.94 SG)

L. Custom Housing-Electrical Connection

F. Mounting Type

N None

P NPT Plug 150# N None

B Cable Gland (Cable sold separately) C 4-pin M12 Micro Connector Female D 4-pin M12 Micro Connector Male 90°

G. Mounting Size

F 4-pin M12 Micro Connector Female 90°

2 2 in. (welded or slide connection) N None

G 90° Elbow M 4-pin M12 Micro Connector Male

H. Mounting Connection W Welded (fixed) S Slide with Compression Fitting (adjustable)

M. End Plug 2 Keyhole for dowel pin
N. Float Stop E3 1-piece clamp, top float stop only N None

O. Stem Weights W6 316L SS, 3.75 lb, 2″Ø x 5″H; modular

Note: This option is standard. Note: Connectors available for use with Small Housing only. For Large Housing, choose N None.

System Wiring Diagrams and IS Use Case Diagrams

Modbus System Wiring For MPI-F Sensors

Power Supply

+8-24 Vdc GND

Use Shielded Cable

Wiring T’s must be located on controller/supply side of IS barriers.

Master Device

RS-485 A (TX+) RS-485 B (TX-)

120 terminating resistor may be necessary for long
cable runs.

Note: When connecting MPI sensors to your system, reversing A and B connections may be necessary if sensors do not communicate with Modbus Master device.

See Hazardous Installation Drawing for Intrinsically Safe installation requirements. Otherwise, wire directly.

MPI Sensor
Sensor 1
V+ B (TX-) A (TX+)
GND

MPI Sensor
Sensor 2
V+ B (TX-) A (TX+)
GND

MPI Sensor
Sensor 3
V+ B (TX-) A (TX+)
GND
120 terminating resistor across A & B terminals of last or only sensor, if necessary.
For installations without IS barriers only.

Modbus System Wiring with RST-6001 For MPI-F Sensors

Power Supply

+8-24 Vdc GND

Use Shielded Cable

Wiring T’s must be located on controller/supply side of IS barriers.

RST-6001 Modbus Controller
USB to computer with APG Modbus software

A B -5V +5V
Equivalent 120 terminating resistor internal to RST-6001

See Hazardous Installation Drawing for Intrinsically Safe installation requirements. Otherwise, wire directly.

Note: An independent +8-24 Vdc power supply is required when using an RST-6001 Modbus Controller. The RST-6001 can only supply ±5 Vdc, not the +8-24 Vdc required by the MPI.

MPI sensor
Sensor 1
V+ B A GND

MPI sensor
Sensor 2
V+ B A GND

MPI sensor
Sensor 3
V+ B A GND

120 terminating resistor across A & B terminals of last or only sensor, if necessary.
For installations without IS barriers only.

IMPORTANT: Refer to Chapter 5 for Intrinsically Safe Installation Drawing for Hazardous Locations.
IMPORTANT: For EMI protection, either connect the ground screw (see pages 1-3) to an earth ground, or ensure that tank mounting of the MPI-F is grounded. 8

MPI MDI Use Case Diagram (Modbus Output Only)

Hazardous Area
Zone 1
MDI Modbus Address: Master Controling: Sensor 1

Zone 0 or Zone 1

MPI Sensor Modbus Address: 1

Single MDI controlling a single MPI sensor · MDI is located in Zone 1 area. MPI can be in Zone 0 or Zone 1 without additional barriers. · MDI is battery powered; allows for software-based switchable power for MPI. · MPI is powered by MDI battery. · No external controller. · No IS barrier required. · Any changes to MPI settings done via MDI buttons.

MPI MDI with Passive Controller Use Case Diagram (Modbus Output Only)

Non-hazardous Area

Hazardous Area

Zone 1
MDI Modbus Address: Master Controling: Sensor 1

Zone 0 or Zone 1

Passive Control Equipment Modbus: Sniffer Sniffing: MDI

Approved IS Barrier

MPI Sensor Modbus Address: 1

Single MDI controlling a single MPI sensor with Passive Control Equipment · MDI is located in Zone 1 area. MPI can be in Zone 0 or Zone 1 without additional barriers. · MDI is battery powered; allows for software-based switchable power for sensor. · MPI is powered by MDI battery. · External controller passively reads (Sniffs) readings from MDI. · External controller can activate MDI. · Approved IS Barrier required between Passive Control Equipment and MDI. · Auxiliary connection required for MDI. · Any changes to MPI settings done via MDI buttons.

4-20 mA Loop Wiring

MPI-F6 4-20 mA Output
V1
Out1

Electrical Barrier
See Dwg 9005491 For Required Entity Parameters For Hazardous Installation

Hazardous Non-hazardous Area Area

Meter + –
Power Supply +24 VDC GND

MPI-F7 4-20 mA Output
V1
Out1 V2
Out2

Electrical Barrier See Dwg 9005491 For Required Entity Parameters For Hazardous Installation
Hazardous Non-hazardous Area Area

Meter 1 + Meter 2 + –
Power Supply +24 VDC GND

IMPORTANT: Refer to Chapter 5 for Intrinsically Safe Installation Drawing for Hazardous Locations.

IMPORTANT: For EMI protection, either connect the ground screw (see pages 1-3) to an earth ground, or ensure that tank mounting of the MPI-F is grounded.
4-20 mA Programming Wiring

Programming configuration is for programming ONLY. After programming, sensor must be reintegrated to 4-20 mA loop for proper system operation.

USB to computer with APG Modbus software

RST-4100

Programming Module and APG Modbus software required for programming MPI-F6 and MPI-F7 series sensors.

MPI-F6 or MPI-F7 series sensor.
Sensor
V 1 Out 1
V 2 Out 2

Out 24V
Load Resistor
(150 to 200 ) Wired in series for
programming.

Note: 24 VDC is required to establish communications with the MPI-F6 or MPI-F7 via the RST-4100.
+
Power Source
(24 VDC)
–

NOTE: For MPI-F7 series sensors, VDC from power source must be connected to Out1 on sensor for correct sensor programming.
10

CHAPTER 2: INSTALLATION AND REMOVAL PROCEDURES AND NOTES
Tools Needed
You will need the following tools to install your MPI level sensor: · Wrench sized appropriately for MPI mounting · Wrench sized appropriately for conduit connections · Flat-head screwdriver for wire terminals · Channel lock pliers for tightening compression fitting · 1/8″ Hex Allen wrench for set screws
ATEX Stated Conditions of Use
· Under certain extreme circumstances, the non-metallic parts incorporated in the enclosure of this equipment may generate an ignition-capable level of electrostatic charge. Therefore the equipment shall not be installed in a location where the external conditions are conducive to the build-up of electrostatic charge on such surfaces. In addition, the equipment shall only be cleaned with a damp cloth.
· The enclosure is manufactured from aluminum. In rare cases, ignition sources due to impact and friction sparks could occur. This shall be considered during installation.
IMPORTANT: Only the combustion gas detection performance of the instrument has been tested.
Physical Installation Notes
The MPI-F should be installed in an area–indoors or outdoors–which meets the following conditions: · Ambient temperature between -40°C and 85°C (-40°F to +185°F) · Relative humidity up to 100% · Altitude up to 2000 meters (6560 feet) · IEC-664-1 Conductive Pollution Degree 1 or 2 · IEC 61010-1 Measurement Category II · No chemicals corrosive to stainless steel (such as NH3, SO2, Cl2, etc.) (Not applicable to plastic-type
stem options) · Ample space for maintenance and inspection
Additional care must be taken to ensure: · The probe is located away from strong magnetic fields, such as those produced by motors,
transformers, solenoid valves, etc. · The medium is free from metallic substances and other foreign matter. · The probe is not exposed to excessive vibration. · The float(s) fit through the mounting hole. If the float(s) does/do not fit, it/they must be mounted
on the stem from inside the vessel being monitored. · The float(s) is/are oriented properly on the stem (See Figure 2.2). MPI-F floats are installed by
customer.
11

PVDF Installation Temperature Requirements
Prior to installing a PVDF-stem MPI-F, the interior, mid-column temperature of the tank must be measured to determine the amount clearance needed at the bottom of the probe for thermal expansion. See Figure 2.1 1. Determine interior, mid-column temperature in °F. 2. Determine interior tank height from top of probe mounting to tank interior bottom, in inches. 3. Use formula in Figure 2.1 to determine necessary clearance from bottom of probe to interior tank
bottom. 4. If necessary, adjust placement of slide mount on probe to accommodate required clearance. Contact factory with any PVDF-stem thermal expansion requirement questions.
MOUNTING OPTION
TANK
INTERNAL TANK HEIGHT (IN) (MOUNTING TOP TO TANK BOTTOM)
PROBE CLEARANCE (IN) PROBE CLEARANCE = .000108 * (185 – INSTALL TEMPERATURE) * INTERNAL TANK HEIGHT
TEMPERATURE IN DEG. F LENGTH IN INCHES
Figure 2.1 12

Physical Installation Instructions
Ensure that all components have been received, including: · MPI-F sensor (head and stem, slide mount if purchased) · Float or floats, if float(s) purchased from APG · Stem Weight(s); Weight-Locking Pin and Set Screw for SS; Top Weight Retention Ring (with two
screws), Dowel Pin for PVDF · Assembly drawing
Assemble sensor mounting, float(s), weight and pins at installation location, if possible. · If not already attached, slide mounting option onto stem. Loosen compression cap so it will slide
easily on stem. For probes with PVDF stems, be sure to account for thermal expansion clearance (see page 10) when placing slide mount on stem. · For SS sensors with float stops, refer to the assembly drawing included with the sensor for float stop installation locations. PVDF float stops are installed at the factory. · Note: If the floats do not fit through the tank/vessel mounting hole, mount them on the stem from inside the vessel being monitored. Then secure the sensor to the vessel. · Slide floats onto stem. If using two floats, slide the lighter float on first. Tops of floats will be indicated by sticker, taper, or etching on float. (See Figure 2.2) After ensuring top of float is toward MPI-F sensor head, remove sticker(s). · For PVDF stem:
Slide weight retention ring onto stem and then insert weight(s) on end of stem Secure dowel pin in end of stem (use hammer/mallet if necessary) Slide weight(s) down onto dowel pin Lock weight(s) in place by sliding weight retention ring down to top weight and tighten · For SS stem: Insert weight(s) on end of stem Insert weight-locking pin into end plug hole Lock into place with set screw, using 1/8″ allen wrench
Install MPI-F sensor on tank · When lifting and installing the sensor be sure to minimize the bending angle between the rigid
stem at the top and bottom of the sensor and the flexible stem in-between. Sharp bends at those points could damage the sensor. The 10″ bend radius of the PVDF probe’s shipping box can be used as a guide for the smallest allowable bend for the PVDF stem (see MPI-F/K Shipping Box Contents on page 4). · If your sensor’s stem and float(s) fit through the mounting hole, insert the weight and the floats into the mount opening. · Carefully unroll and feed the MPI-F sensor stem into the tank, being careful to not let the float(s) drop uncontrolled on the stem. Slide the mount up to the top of the stem. · For PVDF stem:
When the weight is on the bottom of the tank, secure the mounting option to the vessel Take any slack out of the flexible stem, raising bottom of stem to previously calculated clearance height (see page 12). Tighten the compression fitting to hold stem in place. · For SS stem: When the weight is on the bottom of the tank, secure the mounting option to the vessel. Take any slack out of the flexible stem. Tighten the compression fitting to hold stem in place.
13

Taper
UP Figure 2.2

IMPORTANT: Floats must be oriented properly on the stem, or sensor readings will be inaccurate and unreliable. Untapered floats will have a sticker or etching indicating the top of the float. Remove sticker prior to use.

IMPORTANT: MPI-F level sensor MUST be installed according to drawing 9009451 (Intrinsically Safe Installation Drawing for Hazardous Locations) on pages 36-37 to meet listed approvals. Faulty installation will invalidate all safety approvals and ratings.
Electrical Installation
· Remove the housing cover of your MPI. · Feed system wires into MPI through the NPT conduit openings. Any fittings used must be UL/
CSA Listed for CSA installation. · Connect wires to MPI terminals. Use crimped ferrules on wires, if possible. · Replace the housing cover.
See System Wiring Diagrams and IS Use Case Diagrams (pages 8-10) for wiring examples.
IMPORTANT: For EMI protection, either connect the ground screw (see pages 1-3) to an earth ground, or ensure that tank mounting of the MPI-F is grounded.
Removal Instructions
Removing your MPI-F level sensor from service should be done with care. · Ensure that all circuits are turned off and hazardous atmosphere around sensor head has been
cleared. · Remove housing cover and disconnect wires. Replace housing cover. · If the floats on your sensor fit through the mounting hole, carefully lift the entire sensor assembly
out of and away from the vessel. · If the floats on your sensor do not fit through the mounting hole, they will need to be removed
from the stem before the sensor can be removed. Be sure to drain the vessel being monitored to allow access to the floats and stem for removal. · Clean the stem and floats of any build up or debris and inspect for damage. · Store your sensor in a dry place, at a temperature between -40° F and 180° F.

IMPORTANT: Contact factory for shipping instructions prior to returning probe for any reason. 14

CHAPTER 3: PROGRAMMING
Modbus Programming
MPI-F8 series sensors use standard Modbus RTU protocol (RS-485). The sensors can only operate as client devices. Sensor default transmission settings are 9600 Baud, 8 Bits, 1 Stop Bit, No Parity, and require a minimum delay of 300 ms between transactions. See MPI-F8 Modbus Register Lists on pages 16 and 17.
NOTE: For more information about Modbus RTU, please visit www.modbus.org.
Modbus Programming with RST-6001 and APG Modbus Software
An APG RST-6001 Modbus Controller can be used in tandem with APG Modbus software to program and control up to 20 MPI-F8 series sensors. Through APG Modbus, you can monitor the raw readings from the sensor, configure the data for distance, level, volume, or weight, and enter measurements for a strapping chart. See MPI-F8 Modbus Register Lists on pages 16 and 17.
NOTE: For APG Modbus programming instructions, or to download APG Modbus software, please visit https://www.apgsensors.com/resources/product-resources/software-downloads/
15

4-20 mA Programming with RST-4100 and APG Modbus Software
An APG RST-4100 Programming Module can be used in tandem with APG Modbus software to program a single MPI-F6/7 series sensor. Through APG Modbus, you can configure the 4 mA and 20 mA output setpoints and calibration settings. If your monitoring equipment (PLC, etc.) can be configured to interpret the 4-20 mA output(s) of the MPI-F as volume, then the MPI-F can be configured accordingly via APG Modbus. See MPI-F6 and F7 Modbus Register Lists on pages 23 and 23.
However, the RST-4100 is not designed to be used for continuous monitoring of a sensor. After programming your MPI-F sensor, the RST-4100 must be removed and the wiring returned to normal. See 4-20 mA Loop Wiring and 4-20 mA Programming Wiring on page 10.

Modbus Register Lists for MPI-F8

The registers listed below are reference addresses. To convert a reference address to an offset address, remove the first digit then subtract one.
Example 1: Reference address = 30300 Offset register = 299 Example 2: Reference address = 40400 Offset register = 399

Input Registers (0x04)

Returned Data
Model Type Raw Top Float Reading (in mm, unsigned) Raw Bottom Float Reading (in mm, unsigned) Temperature Reading (in °C, signed) Calculated Top Float Reading (in selected Units) Calculated Bottom Float Reading (in selected Units) Version API 18.2 TEMP (in °C, signed)

NOTE: The Calculated Readings will be returned without a decimal place. In order to obtain the true result, the Decimal Place setting must be taken into account.
16

Holding Registers (0x03)

Register
40400 40401 40402 40403 40404 40405 40406 40407 40408 40409 40410 40411 40412 40413 40414 40415 40416 40417 40418 40419 40420 40421 40422 40423 40424 40425 40426 40427 40428 40429 40430 40431 40432 40433 40434 40435 40436-40437 40438-40439 40440-40441 40442-40443 40444-40445 40446 40201

Function
Device Address Units Application Type Volume Units Decimal Place Max Distance Full Distance Empty Distance Sensitivity Pulses Blanking NA Averaging Filter Window Out of Range Samples Sample Rate Multiplier Offset Pre filter Noise limit Temperature Select RTD Offset (°C) Float Window 1st Float Offset 2nd Float Offset Gain Offset 4 mA Set Point 20 mA Set Point 4 mA Calibration 20 mA Calibration t1d t1w t1t t2d t2w t2t Parameter 1 Data Parameter 2 Data Parameter 3 Data Parameter 4 Data Parameter 5 Data Baud Rate Restore to Factory Defaults

Value Range
1 to 247 1, 2, 3 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 1, 2, 3, 4, 5, 6, 7 0, 1, 2, 3 0 to 32,768 mm 0 to 32,768 mm 0 to 32,768 mm 0 to 100 5 to 20 0 to 10,364 mm NA 1 to 50 0 to 10,364 mm 1 to 255 50 to 1,000 msec. 1 to 1,999 (1000 = 1.000) -10,364 to 10,364 mm 0 to 10,364 mm 0 to 255 0 to 8 NA* 0 to 1,000 mm 0=1 float -10,364 to 10,364 -10,364 to 10,364 0 to 255 NA* NA* NA* NA* NA* NA* NA* NA* NA* NA* 0 to 1,000,000 mm 0 to 1,000,000 mm 0 to 1,000,000 mm 0 to 1,000,000 mm 0 to 1,000,000 mm 0, 1, 2, 3, 4 1

*These registers are not used by the MPI-F8, even though they are labeled in the APG Modbus software. Setting is factory calibrated. Do not adjust.
17

MPI-F8 Modbus Sensor Parameters

40401 Units

Determines the units of measure for the Calculated Reading when Application Type is set to 0, 1, or 7.

1 = Feet

2 = Inches 3 = Meters

40403 Volume Units

Determines the units of measure for the Calculated Reading when Application Type is set to 2 6 or

9 11.

1 = Feet3

5 = Liters

2 = Million Feet3

6 = Inches3

3 = Gallons

7 = Barrels

4 = Meters3

40404 Decimal Place
Determines the number of decimal places included in the Calculated Reading(s). The Calculated Reading will always be returned as a whole number.
For example, a Calculated Reading of 1126.658 (gallons, ft3, etc.) will be returned as follows: Decimal Place = 0 Volume = 1127 (rounded to nearest whole number) Decimal Place = 1 Volume = 11267 (divide by 10 to get true result) Decimal Place = 2 Volume = 112666 (divide by 100 to get true result) Decimal Place = 3 Volume = 1126658 (divide by 1000 to get true result)

40405 Maximum Distance (Factory Calibrated)
Sets the distance (beginning from the Zero Reference) to the point where the sensor will stop looking for float signals, usually the bottom of the stem. A float beyond the Maximum Distance value will not be detected.
40406 Full Distance
Sets the positive distance (beginning from the sensor Zero Reference) to the point where the monitored vessel is considered full.
40407 Empty Distance
Sets the positive distance (beginning from the Zero Reference) to the point where the monitored vessel is considered empty (usually the bottom of the stem).
40408 Sensitivity (Factory Calibrated)
Sets the level of gain that is applied to the returning float signal.
40409 Pulses (Factory Calibrated)
Controls the duration of the signal being sent down the magnetostrictive wire.
40410 Blanking (Factory Calibrated)
Sets the blanking distance, which is the zone from the Zero Reference of the sensor to the point from which the first signal will be valid. Signals from a float in the blanking area will be ignored.
40412 Averaging (Factory Calibrated)
Sets the number of qualified received float signals to average for the raw reading. Qualified received signals are placed in a first-in, first-out buffer, the contents of which are averaged for the raw reading. The larger the number of qualified received signals being averaged, the smoother the reading will be, and the slower the reading will be to react to quickly changing targets.
19

40413 Filter Window (Factory Calibrated)
Determines the physical range (0 10,364 mm) of qualified received signals, based on the current raw reading. Signals beyond the +/- Filter Window range of the current reading will not qualify unless the average moves. Signals outside the extents of the Filter Window are written to the Out of Range samples buffer (Holding Register 40414). See Figure 3.1.

Example: Window = 300 mm Out of Range Samples = 10

Samples are rejected within this area unless they persist for 10 consecutive samples

All samples are accepted within this area

150 mm 150mm

Min. Reading

Current value of Distance

Samples are rejected within this area unless they persist for 10 consecutive samples
Max. Reading

Figure 3.1

40414 Out of Range Samples (Factory Calibrated)

Sets the number of consecutive samples outside the Filter Window (Holding Register 40413) necessary to automatically adjust the current reading and move the Filter Window.

40415 Sample Rate (Factory Calibrated)
Sets the update rate of the sensor (between 50 1000 ms). Shorter time delays allow for quicker sensor response times to changing levels. Typical setting is 200 ms. Settings under 200 ms are not recommended.

40417 Offset (Factory Calibrated)
Sets the Zero Reference of the sensor, the point from which the calculated distance is measured.

40418 Pre filter
Defines the physical range (0 10,364 mm) of the start up (pre-filter) window. Four sample readings must be found within the Pre filter window for the MPI sensor to successfully start up. This register is only to be used for diagnostics under factory direction.

40419 Noise Limit

Sets the limit for number of signals (0-255) outside the Pre filter range for the MPI at start up. If the Noise Limit is reached before four readings register within the Pre filter window, the MPI will not start up. This register is only to be used for diagnostics under factory direction.

40420 Temperature Select

Selects the temperature sensor reading to be displayed in Input Register 30302.

MPI-F8 sensors can accommodate up to seven digital temperature sensors in the stem.

0 = Average of sensors A G 1 = Digital Temperature Sensor A 2 = Digital Temperature Sensor B 3 = Digital Temperature Sensor C 4 = Digital Temperature Sensor D

5 = Digital Temperature Sensor E 6 = Digital Temperature Sensor F 7 = Digital Temperature Sensor G 8 = N/A

40422 Float Window (Factory Calibrated)
Sets the distance (0 1000 mm) between the first (i.e. top) float and the point at which the sensor will begin looking for the second (bottom) float. 0 indicates a single float.
40423 1st Float Offset (Factory Calibrated)
Used to calibrate top float reading (-10,364 10,364 mm).
40424 2nd Float Offset (Factory Calibrated)
Used to calibrate bottom float reading (-10,364 10,364 mm).
40425 Gain Offset (Factory Calibrated)
Used to move the centerline of the float response signal to optimize signal strength (0 255).
40446 Baud Rate
Selects the communication speed between the sensor and the Server Device. All devices on the network must use the same Baud Rate. APG Modbus Server and Client devices default to 9600 Baud.
0 = 9600 1 = 19200 2 = 38400 3 = 57600 4 = 115200
40201 Restore To Factory Defaults
Writing a 1 to this Holding Register will erase any settings changes and restore the factory default settings.
22

APG Modbus Register Lists for MPI-F6 and MPI-F7

Input Registers (0x04)

Returned Data
Model Type Raw Top Float Reading (in mm, unsigned) Raw Bottom Float Reading (in mm, unsigned) Version Calculated Top Float Reading (in selected Units) Calculated Bottom Float Reading (in selected Units) N/A

NOTE: Input Register values for MPI-F6 and MPI-F7 are only visible while programming via the RST-4100.

NOTE: Input Registers 30300 and 30301 also display Loss of Signal error codes. See Fail Safe (Holding Register 40411).

Holding Registers (0x03)

Function
Device Address Units Application Type Volume Units Decimal Place Max Distance Full Distance Empty Distance Sensitivity Pulses Blanking Fail Safe Averaging Filter Window Out of Range Samples Sample Rate Multiplier Offset Pre filter Noise limit 1st Output 4 mA Calibration 1st Output 4 mA Calibration Float Window 1st Float Offset 2nd Float Offset Gain Offset 4 mA Set Point 20 mA Set Point 2nd Output 4 mA Calibration 2nd Output 20 mA Calibration t1d t1w t1t t2d t2w t2t Parameter 1 Data Parameter 2 Data Parameter 3 Data Parameter 4 Data Parameter 5 Data

Value Range
1 to 247* 1, 2, 3 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 1, 2, 3, 4, 5, 6, 7 0, 1, 2, 3* 0 to 15,240 mm 0 to 15,240 mm 0 to 15,240 mm 0 to 100 0 to 20 0 to 10,364 mm 0 = Disable, 1 = 3.8 mA, 2 = 22 mA 1 to 31 0 to 10,364 mm 1 to 255 10 to 1,000 msec. 1 to 1,999 (1000 = 1.000) -10,364 to 10,364 mm 0 to 10,364 mm 0 to 255 0 1,000 0 1,000 0 to 1,000 mm 0=1 float -10,364 to 10,364 -10,364 to 10,364 0 to 255 0 10,364 mm 0 10,364 mm 0 1,000 0 1,000 NA* NA* NA* NA* NA* NA* 0 to 1,000,000 mm 0 to 1,000,000 mm 0 to 1,000,000 mm 0 to 1,000,000 mm 0 to 1,000,000 mm

*These registers are not used by the MPI-F6 or MPI-F7, even though they are labeled in the APG Modbus software. Setting is factory calibrated. Do not adjust.

MPI-F6 and MPI-F7 APG Modbus Sensor Parameters

40401 Units

Determines the units of measure for the Calculated Reading when Application Type is set to 0, 1, or 7.

1 = Feet

2 = Inches 3 = Meters

For MPI-F6 and MPI-F7, this is seen only when using APG Modbus to program the MPI-F. This setting

does not affect the 4-20 mA output.

40402 Application Type
Determines the type of Calculated Reading performed by the sensor. 0 = Distance 1 = Level 2 = Standing Cylindrical Tank with or without Hemispherical Bottom 3 = Standing Cylindrical Tank with or without Conical Bottom 4 = Standing Rectangular Tank with or without Chute Bottom 5 = Horizontal Cylindrical Tank with or without Spherical Ends 6 = Spherical Tank 7 = Pounds (Linear Scaling) 8 = N/A 9 = Vertical Oval Tank 10 = Horizontal Oval Tank 11 = Strapping Chart
See MPI-F Application Type Parameters pages 30-34.
For the MPI-F6 and MPI-F7, the 4-20 mA output can be scaled for linear output over distance/level (Application Type 0 or 1) or scaled for linear output over volume (Application Type 2 11). When setup in any of the volumetric application types, the 4-20mA output becomes linear with regards to the calculated volume (linear mA change per gallon, liter, etc.), rather than the raw distance/level reading.

40403 Volume Units

Determines the units of measure for the Calculated Reading when Application Type is set to 2 6 or

9 11.

1 = Feet3

5 = Liters

2 = Million Feet3

6 = Inches3

3 = Gallons

7 = Barrels

4 = Meters3

40404 Decimal Place

Determines the number of decimal places included in the Calculated Reading(s). For MPI-F6 and F7, this is seen only when using APG Modbus to program the MPI-F. This setting does not affect the 4-20 mA output.

40405 Maximum Distance (Factory Calibrated)
Sets the distance (beginning from the Zero Reference) to the point where the sensor will stop looking for float signals, usually the bottom of the stem. A float beyond the Maximum Distance value will not be detected.
40406 Full Distance
Sets the positive distance (beginning from the sensor Zero Reference) to the point where the monitored vessel is considered full.
40407 Empty Distance
Sets the positive distance (beginning from the Zero Reference) to the point where the monitored vessel is considered empty (usually the bottom of the stem).
40408 Sensitivity (Factory Calibrated)
Sets the level of gain that is applied to the returning float signal.
40409 Pulses (Factory Calibrated)
Controls the duration of the signal being sent down the magnetostrictive wire.
40410 Blanking (Factory Calibrated)
Sets the blanking distance, which is the zone from the Zero Reference of the sensor to the point from which the first signal will be valid. Signals from a float in the blanking area will be ignored.
40411 Fail Safe
Sets the output condition (Input Registers 30300 and 30301) that the MPI-F will revert to in the event of a loss of signal condition.
0 = Disable (no fail safe output) 1 = 3.8 mA 2 = 22 mA For Application Type (Holding Register 40402) 0 and disabled fail safe, Loss of Signal defaults to 20 mA. For Application Type 1 11 and disabled fail safe, Loss of Signal defaults to 4 mA.
26

40412 Averaging
Sets the number of qualified received float signals to average for the raw reading. Qualified received signals are placed in a first-in, first-out buffer, the contents of which are averaged for the raw reading. The larger the number of qualified received signals being averaged, the smoother the reading will be, and the slower the reading will be to react to quickly changing targets.
40413 Filter Window
Determines the physical range (0 10,364 mm) of qualified received signals, based on the current raw reading. Signals beyond the +/- Filter Window range of the current reading will not qualify unless the average moves. Signals outside the extents of the Filter Window are written to the Out of Range samples buffer (Holding Register 40414). See Figure 3.2.

Example: Window = 300 mm Out of Range Samples = 10

Samples are rejected within this area unless they persist for 10 consecutive samples

All samples are accepted within this area

150 mm 150mm

Min. Reading

Current value of Distance

Samples are rejected within this area unless they persist for 10 consecutive samples
Max. Reading

Figure 3.2

40414 Out of Range Samples
Sets the number of consecutive samples outside the Filter Window (Holding Register 40413) necessary to automatically adjust the current reading and move the Filter Window.

40415 Sample Rate
Sets the update rate the sensor (10 1000 ms). Shorter time delays allow for quicker sensor response times to changing levels. Typical setting is 200 ms. Settings under 200 ms are not recommended.

40416 Multiplier (Factory Calibrated)
Calibrates the distance reading span. The Multiplier is shown by the values 1 1999, but these values are understood to represent 0.001 1.999. The default of 1000 (i.e. 1.000) is used for most applications.
40417 Offset (Factory Calibrated)
Sets the Zero Reference of the sensor, the point from which the calculated distance is measured.
40418 Pre filter
Defines the physical range (0 10,364 mm) of the start up (pre-filter) window. Four sample readings must be found within the Pre filter window for the MPXI-F sensor to successfully start up. This register is only to be used for diagnostics under factory direction.
40419 Noise limit
Sets the limit for number of signals (0-255) outside the Pre filter range for the MPXI-F at start up. If the Noise Limit is reached before four readings register within the Pre filter window, the MPXI-F will not start up. This register is only to be used for diagnostics under factory direction.
40420 1st Output 4mA Cal (Factory Calibrated)
Used to calibrate the 4 mA output of the MPI-F6 or 1st (upper float) 4 mA output of the MPI-F7.
40421 1st Output 20mA Cal (Factory Calibrated)
Used to calibrate the 20 mA output of the MPI-F6 or the 1st (upper float) 20 mA output of the MPI-F7.
40422 Float Window (Factory Calibrated)
Sets the distance (0 1000 mm) between the first (i.e. top) float and the point at which the sensor will begin looking for the second (bottom) float. This essentially functions as a secondary blanking distance for the minimum depth of the top fluid. Set to 0 for single float.
40423 1st Float Offset
Used to calibrate top float reading (-10,364 10,364 mm). Differences in fluid specific gravity can change the level at which a float rests in the liquid. Use this parameter to match probe reading to confirmed liquid level.
28

40424 2nd Float Offset
Used to calibrate bottom float reading (-10,364 10,364 mm). Differences in fluid specific gravity can change the level at which a float rests in the liquid. Use this parameter to match probe reading to confirmed liquid level.
40425 Gain Offset (Factory Calibrated)
Used to move the centerline of the float response signal to optimize signal strength (0 255).

40426 4mA Set
Used to set the distance which will correspond to an output of 4 mA. For Application 1 (Distance), this is measured from the Zero Reference. For all other applications (Level & Volumetric) this is measured from the bottom of the probe. See Figure 3.3.

40427 20mA Set

Used to set the distance which will correspond to an output of 20 mA. For Application 1 (Distance), this is measured from the Zero Reference. For all other applications (Level & Volumetric) this is measured from the bottom of the probe. See Figure 3.3.

Zero Reference Bottom of Probe

Application 0 Distance 0 mm 4 mA
20 mA
Figure 3.3

Application 1-11 Level or Volume
20 mA 4 mA 0 mm

40428 2nd Output 4mA Cal (Factory Calibrated)
Used to calibrate the 2nd (lower float) 4 mA output of the MPI-F7.

40429 2nd Output 20mA Cal (Factory Calibrated)
Used to calibrate the 2nd (lower float) 20 mA output of the MPI-F7. 29

MPI-F Application Type Parameters

Application 0 Distance

Function
Device Address Units Application Type Volume Units Decimal (Calculated)

Value Range
1 to 247 1 = Feet, 2 = Inches, 3 = Meters 0 — 0 3

Application 1 Level
Register 40400 40401 40402 40403 40404 40405 40406 40407

Function
Device Address Units Application Type Volume Units Decimal (Calculated) Max Distance Full Distance Empty Distance

Value Range
1 to 247 1 = Feet, 2 = Inches, 3 = Meters 1 — 0 3 (factory set) 0 32,768 mm 0 32,768 mm

Application 2 Volume of Standing Cylindrical Tank ± Hemispherical Bottom

Function
Device Address Units Application Type Volume Units Decimal (Calculated) Max Distance Full Distance Empty Distance

40436-40437 40438-40439

Tank Diameter Radius of Bottom Hemisphere

Value Range 1 to 247 — 2 1 7 0 3 (factory set) 0 32,768 mm 0 32,768 mm
0 1,000,000 (mm) 0 1,000,000 (mm)

Diameter

Full Level
or

Bottom Radius

Application 3 Volume of Standing Cylindrical Tank ± Conical Bottom

Function
Device Address Units Application Type Volume Units Decimal (Calculated) Max Distance Full Distance Empty Distance

Value Range
1 to 247 — 3 1 7 0 3 (factory set) 0 32,768 mm 0 32,768 mm

40436-40437 40438-40439
40440-40441

Tank Diameter Cone Diameter (at bottom of cone) Length (height) of Cone

0 1,000,000 (mm) 0 1,000,000 (mm)
0 1,000,000 (mm)

Diameter

Full Level

Cone Length

Cone Diameter

Application 4 Volume of Standing Rectangular Tank ± Chute Bottom

Function

Value Range

40400

Device Address

1 to 247

40401

Units

—

40402

Application Type

40403

Volume Units

1 7

40404

Decimal (Calculated)

0 3

Full

40405

Max Distance

(factory set)

Level

40406

Full Distance

0 32,768 mm

40407

Empty Distance

0 32,768 mm

40436-40437 Tank X Dimension

0 1,000,000 (mm)

40438-40439 Tank Y Dimension

0 1,000,000 (mm)

40440-40441 Chute X Dimension

0 1,000,000 (mm)

40442-40443 Chute Y Dimension

0 1,000,000 (mm)

40444-40445 Length (height) of Chute 0 1,000,000 (mm)

Tank X

Chute Length

Tank Y Chute Y

Chute X

NOTE: For all applications other than Distance, Empty Distance is usually the same as Max Distance.
31

Application 5 Volume of Horizontal Cylindrical Tank ± Hemispherical Ends

Function Device Address Units Application Type Volume Units Decimal (Calculated) Max Distance Full Distance Empty Distance
Tank Length Tank Diameter Radius of End Hemispheres

Value Range 1 to 247 — 5 1 7 0 3 (factory set) 0 32,768 mm 0 32,768 mm
0 1,000,000 (mm) 0 1,000,000 (mm) 0 1,000,000 (mm)

End Radius

Diameter Length

Full Level

Application 6 Volume of Spherical Tank

Function Device Address Units Application Type Volume Units Decimal (Calculated) Max Distance Full Distance Empty Distance
Tank Diameter

Value Range 1 to 247 — 6 1 7 0 3 (factory set) 0 32,768 mm 0 32,768 mm
0 1,000,000 (mm)

Full Level

Diameter

Application 7 Pounds (Linear Scaling)

Function Device Address Units Application Type Volume Units Decimal (Calculated) Max Distance Full Distance Empty Distance
Multiplier (linear scalar)

Value Range 1 to 247 1 = Feet, 2 = Inches, 3 = Meters 7 — 0 3 (factory set) 0 32,768 mm 0 32,768 mm
0 1,000,000 (1000 = 1.000)

Application 8 N/A

Application 9 Volume of Vertical Oval Tank

Function Device Address Units Application Type Volume Units Decimal (Calculated) Max Distance Full Distance Empty Distance
Tank Length Tank Depth Tank Width

Value Range 1 to 247 — 9 1 7 0 3 (factory set) 0 32,768 mm 0 32,768 mm
0 1,000,000 (mm) 0 1,000,000 (mm) 0 1,000,000 (mm)

Full Width Level

Depth

Length
33

Application 10 Volume of Horizontal Oval Tank

Function Device Address Units Application Type Volume Units Decimal (Calculated) Max Distance Full Distance Empty Distance
Tank Length Tank Depth Tank Width

Value Range 1 to 247 — 10 1 7 0 3 (factory set) 0 32,768 mm 0 32,768 mm
0 1,000,000 (mm) 0 1,000,000 (mm) 0 1,000,000 (mm)

Full Level

Depth Width

Length

Application 11 Strapping Chart (Polynomial Values)

Function Device Address Units Application Type Volume Units Decimal (Calculated) Max Distance Full Distance Empty Distance
X^3 Coefficient X^2 Coefficient X^1 Coefficient X^0 Coefficient

Value Range 1 to 247 1 = Feet, 2 = Inches, 3 = Meters 11 1 7 0 3 (factory set) 0 32,768 mm 0 32,768 mm
0 1,000,000 0 1,000,000 0 1,000,000 0 1,000,000

CHAPTER 4: MAINTENANCE
General Care
Your MPI-F level sensor is very low maintenance and will need little care as long as it was installed correctly. However, in general, you should: · Periodically inspect your MPI-F to ensure the stem and floats are free of any heavy buildup that
might impede the movement of the floats. If sediment or other foreign matter becomes trapped between the stem and float(s), detection errors can occur. · If you need to remove the float(s) from the stem of your MPI-F, be sure to note the orientation of the float(s) prior to removal. This will help ensure proper re-installation of the float(s). · Ensure the housing cover is snugly secured. If the cover becomes damaged or is misplaced, order a replacement immediately.
Repair and Returns
Should your MPI-F level sensor require service, please contact the factory via phone, email, or online chat. We will issue you a Return Material Authorization (RMA) number with instructions. · Phone: 888-525-7300 · Email: sales@apgsensors.com · Online chat at www.apgsensors.com Please have your part number and serial number available. See Warranty and Warranty Restrictions for more information.
IMPORTANT: All repairs and adjustments of the MPI level sensor must be made by the factory. Modifying, disassembling, or altering the MPI on site is strictly prohibited.
IMPORTANT: Contact factory for shipping instructions prior to returning probe for any reason.
35

CHAPTER 5: HAZARDOUS LOCATION INSTALLATION AND CERTIFICATION
Intrinsically Safe Installation Drawing for Hazardous Locations
36

ZONE REV

—

DESCRIPTION See Change Order

CAGE CODE
52797

DOCUMENT NO
9005491

REVISIONS

CHANGE ORDER

DATE

CO-3982

06/01/2020

SHEET

REV

APPROVED A. Fullmer

RS485+ RS485V+ V-

Unclassified Location

Associated Apparatus with Entity Parameters

Voc (or Uo) Vmax (or Ui)

Isc (or Io) Imax (or Ii)

Ca (or Co) Ci + Ccable

La (or Lo) Li + Lcable

Hazardous Location
Class I, Division 1, Groups C,D T4 Class I, Zone 0, AEx ia IIB T4 Ga Ex ia IIB T4 Ga, Ta -40°C to 85°C

MPI – RS485 RTU

A B VIN GND

Vmax (or Ui) = 28V

Imax (or Ii) = 280mA

= 850mW

= 0.374uF

= 3.50uH

– Installation must be in accordance with NEC Articles 504 and 505.

PROPRIETARY AND CONFIDENTIAL
THIS DRAWING IS THE PROPERTY OF AUTOMATION PRODUCTS GROUP, INC.
LOGAN, UTAH AND MAY NOT BE USED, REPRODUCED, PUBLISHED, OR
DISCLOSED TO OTHERS WITHOUT WRITTEN CONSENT OF THE COMPANY.

APPROVALS
DRWN
C. Chidester
CHKD
S. Hutchins
APVD
R. Barson

DATE 6/5/2018 8/29/2018 8/29/2018

IF LOANED, IT IS SUBJECT TO RETURN

CONTRACT

UPON DEMAND AND MAY NOT BE USED

SIZE

IN ANY WAY DIRECTLY OR INDIRECTLY

MATL

DETRIMENTAL TO THE COMPANY.

FINISH

1025 West 1700 North Logan, Utah USA 888.525.7300

MPI Series Intrinsically Safe Installation Drawing
for Hazardous Locations

CAGE CODE

PART NO

DOCUMENT NO

REV

52797

VARIOUS

9005491

SHEET 1 OF 2

Form 9000063 Rev C

ZONE REV

—

DESCRIPTION See Change Order

CAGE CODE
52797

DOCUMENT NO
9005491

REVISIONS

CHANGE ORDER

DATE

CO-3982

06/01/2020

SHEET

REV

APPROVED A. Fullmer

Loop + Loop –

Control 1 Control 2

Unclassified Location

Associated Apparatus with Entity Parameters

Voc (or Uo) Vmax (or Ui)

Isc (or Io) Imax (or Ii)

Ca (or Co) Ci + Ccable

La (or Lo) Li + Lcable

V1 *V2 OUT1 *OUT2

Hazardous Location
Class I, Division 1, Groups C,D T4 Class I, Zone 0, AEx ia IIB T4 Ga Ex ia IIB T4 Ga, Ta -40°C to 85°C

MPI – Analog 4-20

Vmax (or Ui) = 28V

Imax (or Ii) = 280mA

= 850mW

= 0.374uF

= 3.50uH

– Installation must be in accordance with NEC Articles 504 and 505. * Connections ‘V2’ and ‘OUT2’ are only applicable for Output 7

APPROVALS
DRWN
C. Chidester
CHKD
S. Hutchins
APVD
R. Barson

DATE 6/5/2018 8/29/2018 8/29/2018

IF LOANED, IT IS SUBJECT TO RETURN

CONTRACT

UPON DEMAND AND MAY NOT BE USED

SIZE

IN ANY WAY DIRECTLY OR INDIRECTLY

MATL

DETRIMENTAL TO THE COMPANY.

FINISH

1025 West 1700 North Logan, Utah USA 888.525.7300

MPI Series Intrinsically Safe Installation Drawing
for Hazardous Locations

CAGE CODE

PART NO

DOCUMENT NO

REV

52797

VARIOUS

9005491

SHEET 2 OF 2

Form 9000063 Rev C

Automation Products Group, Inc. Tel: 1 888-525-7300 or 1 435-753-7300
e-mail: sales@apgsensors.com www.apgsensors.com
Automation Products Group, Inc. 1025 W. 1700 N. Logan, UT 84321

Documents / Resources

APG MPI-F Magnetostrictive Level Sensors [pdf] User Manual
MPI-F Magnetostrictive Level Sensors, MPI-F, Magnetostrictive Level Sensors, Level Sensors, Sensors

References

User Manual

MPI-F Magnetostrictive Level Sensors

Specifications

Product Usage Instructions

Chapter 2: Installation and Removal Procedures

Tools Needed:

Physical Installation Instructions:

Electrical Installation:

Removal Instructions:

Chapter 3: Programming

Chapter 4: Maintenance

Chapter 5: Hazardous Location Installation and
Certification

Frequently Asked Questions (FAQ)

Q: What are the warranty terms for the MPI series
magnetostrictive level sensor?

Q: Can I install the MPI-F level sensor without following the
specified installation drawing?

Documents / Resources

References

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