APG RPS Resistive Chain Probe Level Sensors User Manual
IMPORTANT: RPE Sanitary Series RPS level sensor MUST be installed and cleaned according to 3-A Sanitary standards to meet listed approvals. Faulty installation will invalidate sanitary certification.
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 www.apgsensors.com/resources/warranty-certifications/warranty-returns/. Contact Technical Support to receive a Return Material Authorization before shipping your product back.
Chapter 1: Specifications and Options
Dimensions
RPE Sanitary Series RPS Level Sensor and Float Dimensions
Specifications
Performance
Resolution ±0.25 in. (6.4 mm)
Accuracy ±0.12 in. (3 mm)
RTD – (Type PT100) Accuracy: ±1°C
Resolution: 1°C
Environmental
Process Temperature -18° – 93° C (0° – 200° F)
Electrical
Supply Voltage 5 – 30 VDC
Connectivity
Output 5-30 VDC Resistive chain
Materials of Construction
Stem 304 SS
Float 316L SS
Float Stop 316L SS
Cable 5-conductor, shielded, 22 AWG
Mechanical
Float Specific Gravity 0.65 maximum
Certifications
3-A Sanitary Compliance Standard 74-07
Model Number Configurator
Model Number: RPS 
A. RTD, and Probe Mounting
□ XX▲ No mounting
□ TXX Stem RTD (1 in. from bottom of stem), No mounting
B. Stem Material
□ S 304 SS
C. Stem and Accessories Finish
□ 2 Sanitary
D. Float
□ C 2.13h x 1.48d in. Round 316 SS (0.65 SG max.)
E. Total Stem Length in Inches†
□ __ Up to 96 in. (244 cm) overall length††
▲This option is standard
†Note: See dimensions on page 1 for Measurable vs Overall stem length.
††Note: Includes 5m of cable beyond top of probe.
Electrical Connections and Circuit Wiring Diagram
RPS Circuit with RTD
Chapter 2: Installation and Removal Procedures and Notes
Tools Needed
You will need the following tools to install your RPE Sanitary Series RPS level sensor:
- Tools for attaching drip plate or protective cover to RPS probe
- Tools for attaching drip plate or protective cover to tank/vessel
Physical Installation Notes
The RPS should be installed in an area–indoors or outdoors–which meets the following conditions:
- Ambient temperature between -18° and 93° C (0° – 200° F)
- Temperature of medium between -18° and 93° C (0° – 200° F)
- Relative humidity up to 100%
- 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 probe is not exposed to excessive vibration.
- The probe is located away from inlets or outlets.
Physical Installation Instructions
- Mount a drip plate or other protective cover on RPS probe to prevent contaminants above the sensor from entering the liquid.
- Ensure that the RPS probe is secured in an upright position, and that only the stem is in the liquid to be measured.
- Attach the drip plate or cover to the tank/vessel as required or provided.
Electrical Installation
- Connect wires from RPS probe to terminals of your control/measurement system.
See Electrical Connections and Circuit Wiring Diagram.
Removal Instructions
Removing your RPE Sanitary Series RPS level sensor from service should be done with care.
- Detach drip plate or other protective cover from the tank/vessel.
- Remove probe and protective cover from liquid. Ensure that any liquid on the probe is cleaned or contained in a safe and/or sanitary way, as required.
- 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 -18° C and 93° C (0° F and 200° F).
Chapter 3: Maintenance
General Care
Your RPE Sanitary Series RPS level sensor is designed to be low maintenance. However, in general, you should:
- Regularly inspect your RPS to ensure the stem and float are free of any buildup that might impede the movement of the float or create an unsanitary condition.
- Ensure the drip plate or other protective cover is snuggly secured. If the cover becomes damaged or is misplaced, order a replacement immediately.
Cleaning
Your RPE Sanitary Series RPS level sensor is designed to be cleaned using “Clean-Out-of-Place” procedures:
- Follow the Removal Instructions on page 5 to remove the RPS probe.
- Follow on-site “Clean-Out-of-Place” procedures.
- Follow Physical Installation instructions on page 5 to reinstall the RPS probe.
Repair and Returns
Should your RPE Sanitary Series RPS 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 RPE Sanitary Series RPS level sensor must be made by the factory. Modifying, disassembling, or altering the RPS probe on site is strictly prohibited and may jeopardize your probe’s sanitary rating.
Chapter 4: Sanitary Certificate
Sanitary Certificate
Automation Products Group, Inc.
1025 West 1700 North, Logan, UT 84321
is hereby authorized to continue to apply the 3-A Symbol to the models of equipment, conforming to 3-A Sanitary Standards for:
Number 74-07
74-07 (Sensors and Sensor Fittings and Connections)
set forth below
COP Models: RPE Sanitary Series (RPS)
VALID THROUGH: December 31, 2020
Timothy R. Rugh
Executive Director
3-A Sanitary Standards, Inc.
The issuance of this authorization for the use of the 3-A Symbol is based upon the voluntary certification, by the applicant for it, that the equipment listed above complies fully with the 3-A Sanitary Standard(s) designated. Legal responsibility for compliance is solely that of the holder of this Certificate of Authorization, and 3-A Sanitary Standards, Inc. does not warrant that the holder of an authorization at all times complies with the provisions of the said 3-A Sanitary Standards. This in no way affects the responsibility of 3-A Sanitary Standards, Inc. to take appropriate action in such cases in which evidence of nonconformance has been established.
NEXT TPV INSPECTION/REPORT DUE: December 2024
Automation Products Group, Inc.
Tel: 1/888/525-7300 • Fax: 1/435/753-7490 • www.apgsensors.com • sales@apgsensors.com
Documents / Resources
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APG RPS Resistive Chain Probe Level Sensors [pdf] User Manual RPS Resistive Chain Probe Level Sensors, RPS, Resistive Chain Probe Level Sensors, Chain Probe Level Sensors, Probe Level Sensors, Level Sensors, Sensors |