Instruction Manual for Dwyer Instruments models including: CP2 CoolPoint Vortex Shedding Flowmeter, CP2, CoolPoint Vortex Shedding Flowmeter, Vortex Shedding Flowmeter, Shedding Flowmeter, Flowmeter
File Info : application/pdf, 8 Pages, 1.18MB
DocumentDocumentSeries CP/CN/CT/CX |
Bulletin F-CP/CN/CT/CX
CoolPoint® Vortex Shedding Flowmeter
Specifications - Installation and Operating Instructions
EF
NPT FEMALE CONNECTION
CONTROL BOX CAN BE ROTATEDTO ANY
OF [4] DETENTED POSITIONS IN
90° INCREMENTS
C
NPT FEMALE CONNECTION
FE
OUT FLOW DIRECTION OUT
IN IN
B A
C D
CP2, CP3, CP4
BA
D
OPTIONAL -C2
PIG TAIL CONNECTION
CTx (shown with -C2 pig tail connection)
3-1/4 MAX.
[83 MM] B POSITION N4
5 MAX. [127 MM]
C 1.312
[33 MM]
A
B
D
OUT
POSITION N3
CONTROL BOX CAN BE ROTATED
TO ANY OF [4] DETENTED POSITIONS
IN 90° INCREMENTS
POSITION N2
4.592 MAX. [117 MM] A
POSITION N1 MOUNTING LUGS FOR Ø.31 [5/16] BOLTS. [4] PLACES.
CPM8
EF C
C
NPT FEMALE CONNECTION
CP/CN6, CP/CN8, CN12, CN16
CONTROL BOX CAN BE ROTATED TO ANY OF [4] DETENTED
POSITIONS IN 90° INCREMENTS ØH
E APPROXIMATE FLOW
D
SWING RADIUS
IN
FLOW OUT
EF
B A
A BD
CX8-M7 F APPROXIMATE SWING RADIUS CD
F APPROXIMATE SWING RADIUS
E
A
C
B
CPX-V8
C
AB
GD
.500-14 NPT
CONDUIT CONNECTION
CP24, 32 (shown with -C3/-C14 conduit box)
E CXX-M5
The Series CP/CN/CT/CX CoolPoint® Vortex Shedding Flowmeter is made for
water, water/glycol mixtures, or low viscosity fluids. These units contain no moving parts to clog or wear, allowing for minimal maintenance in the field. This series has two versions: a 3-wire version, where power is supplied separate from the 4-20 mA output, and a 2-wire loop-powered version. The 3-wire version is equipped with a solid state relay that can be configured in the field to be either an alarm or a pulse output, an LED display which allows the user to choose between selectable engineering units (GPM or LPM), and a high temperature option. The alarm on this version is selectable between a high or low alarm (NO or NC) and the pulse output option is set at a frequency at a specific pulses per gallon. The 2-wire option allows for operation in an intrinsically safe mode only when used in conjunction with an approved intrinsic safety barrier meeting required entity parameters. This version does not come with a display or relay contacts to allow for this operation mode.
SPECIFICATIONS Service: Compatible liquids. Range: See flow rate chart. Display: 3-digit or 4-digit LED (pipe sizes > 3), 0.3 (7.6 mm) digit height; CP-V8: 3-digit LCD (6-digit LCD totalizer mode), 0.3 (7.6 mm) digit height. Wetted Materials: Flow body: 316 SS or brass; Sensor: PEEK; Seals: FKM. Accuracy: Flow: ±2% FS; Temperature: ±2°F (±0.1°C) (model selectable). Repeatability: ±0.25% of reading. Turndown: 10:1 (20:1 optional). Temperature Limits: 35 to 210°F (2 to 99°C). Pressure Limits: 10 to 300 psig (0.7 to 20.7 bar); CP flange and CX: 200 psig (20.7 bar) max. Response Time: 450 ms. Power Requirements: 10-30 VDC @ 80 mA standard; 25 mA for 2 wire option; CP-V8: 2 AA alkaline batteries, not included (45 day battery life). Output: 4-20 mA; 100 pulses per gallon (3-wire models only); 2, 3, and 4: 25 pulses per gallon. Deadband: Alarm output: 2.5% FS for up to 1/2; 5% FS for larger than 1/2. Viscosity: 15 cP max. Enclosure Rating: NEMA 4X (IP65). Process Connection: Female NPT, BSPT, or BSPP (model selectable). Electrical Connection: Male DC micro 5 pin connector; Pigtails or junction box with terminal strip (model selectable). Weight: CX: 1.5 lb (0.7 kg); CP: 3.3 lb (1.5 kg); CP-V8:4 lb (1.8 kg); CN, CT: 7 lb (3.2 kg). Compliance: CSA.
DWYER INSTRUMENTS, INC.
P.O. BOX 373 · MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: 219-879-8000 Fax: 219-872-9057
www.dwyer-inst.com e-mail: info@dwyermail.com
Model
Option
CT2-CT8 Standard
CT12, CT16
CP2-V8
CP3-V8
CP4-V8
CP6-V8
CP8-V8
CP12-V8
CP16-V8
CPM8
CP2, CP3, C1 and C2 options
CP4
CN6, CN8
CP6, CP8
CN12, CN16
CP24
CT24
CP32
CT32
CP2, CP3, C3 = Conduit box
CP4
CN6, CN8
CP6, CP8
CN12, CN16
CP12, CP16
CT2-CT8
CT12, CT16
CP24
CT24
CP32
CT32
CX8
M7 = Hose barb
M8 = Nylong
Endcaps
CX2, CX3, T1 = NPT female
CX4
thread
CX6, CX8 T1 = NPT female
thread
CX2, CX3, T6 = NPT male
CX4
thread
CX6, CX8 T6 = NPT male
thread
A in [mm]
B in [mm]
4-1/2 [114.3] 2-1/4 [57.15]
6-3/4 [171.45] 3-3/8 [85.72]
1-53/64 [46.48] 3-21/32 [92.71]
C in [mm]
D in [mm]
4-3/64 [102.62] 4-59/64 [124.97]
4-23/32 [119.85] 6-9/64 [155.96]
2-3/8 [60.32] 5-29/32 [50.11]
2-1/4 [57.15] 4-1/2 [114.3] 2-3/4 [69.85] 6-7/16 [163.51]
3-3/8 [85.72] 6-3/4 [171.45] 2-7/8 [73.02] 7-11/16 [195.33]
2-7/8 [73] 3-1/4 [82.55]
2-1/2 [63.5]
2 [51]
1-11/64 [41.15] 3-1/4 [82.55]
4-5/64 [103.38]
4-1/2 [114.3] 4-1/2 [114.3] 6-3/4 [171.45] 7-3/4 [196.85] 10-3/4 [273.05] 3-1/4 [82.55]
2-1/4 [57.15] 2-1/4 [57.15] 3-3/8 [85.72] 3-7/8 [98.55] 5-3/5 [136.65] 1-11/64 [41.15]
3-35/64 [90.17] 4-39/64 [116.84]
4-3/64 [102.62] 4-59/64 [124.97]
4-1/4 [107.7] 5-55/64 [148.59]
8-29/32
11-1/8
[226]
[282.57]
9-15/32
12-37/64
[240]
[319.48]
5-13/32 [137.16] 4-5/64 [103.38]
4-1/2 [114.3] 4-1/2 [114.3] 6-3/4 [171.45] 6-3/4 [171.45] 4-1/2 [114.3] 6-3/4 [171.45] 7-3/4 [196.85] 10-3/4 [273.05] 3-3/16 [80.96] 2-1/2 [63.5]
2-1/4 [57.15] 5-11/16 [144.53] 4-39/64 [116.84]
2-1/4 [57.15] 6-33/64 [165.61] 4-59/64 [124.97]
3-3/8 [85.72] 6 [152.4]
5-55/64 [148.59]
3-3/5 [91.44] 6-7/8 [174.5] 6-9/64 [155.96]
2-1/4 [57.15] 6-3/64 [165.61] 4-59/64 [124.97]
3-3/8 [85.72] 6-23/32 [174.5] 6-9/64 [155.96]
3-7/8
8-29/32
11-1/8
[98.55]
[226]
[282.57]
5-3/5
9-15/32
12-37/64
[136.65]
[240]
[319.48]
6-23/64 [161.54] 2-1/2 [63.5]
2-27/32 [72.14]
4-61/64 [125.73] 2-13/32 [60.96] 2-13/16 [71.37]
1-63/64 [50.29] 3-31/32 [100.84] 2-13/32 [60.96] 4-13/16 [122.17]
2-3/8 [60.32] 4-3/4 [120.65] 2-13/32 [60.96] 2-13/16 [71.37]
2-3/8 [60.32] 4-23/32 [119.85] 2-23/64 [59.94] 2-13/16 [71.37]
3-5/16 [83.82] 6-39/64 [167.89] 2-13/32 [60.96] 2-13/16 [71.37]
E in [mm] 3-3/4 [95.25] 3-3/4 [95.25] 4-61/64 [125.73]
5-17/64 [133.6]
6 [152.4]
2-15/64 [59.44]
2-3/4 [69.85] 3-3/4 [95.25] 2-7/8 [73.02] 11-1/8 [282.57] 12-37/64 [319.48] 2-15/64 [59.44]
2-3/4 [69.85] 3-3/4 [95.25] 2-7/8 [73.02] 3-3/4 [95.25] 3-3/4 [95.25] 3-3/4 [95.25] 11-1/8 [282.57] 12-37/64 [319.48] 4-21/32 [118.27] 4-21/32 [118.36]
4-9/32 [108.71] 4-55/64 [123.19]
4-9/32 [108.71]
4-55/64 [123.19]
F in [mm] 4-3/16 [106.43] 4-3/16 [106.43] -
G in [mm] -
-
-
-
-
-
-
2-49/64 [70.36] -
3-3/16 [80.96] -
4-3/16 [106.43] -
3-1/4 [82.55]
-
7-1/2
5-47/64
[190.5]
[146]
9
6-7/16
[228.6]
[163.51]
6-13/32 [162.81] -
6-51/64 [172.47] -
7-51/64 [198.04] -
6-55/64 [173.99] -
7-51/64 [198.04] -
7-51/64 [198.04] -
7-51/64 [198.04] -
7-1/2
5-47/64
[190.5]
[146]
9
6-7/16
[228.6]
[163.51]
3-39/64 [91.69] -
3-39/64 [91.69] -
3-39/64 [91.69] -
3-13/16 [96.52] -
3-39/64 [91.69] -
3-13/16 [96.52] -
H in [mm] -
-
-
-
-
7-1/2 [190.5] 9 [228.6] -
7-1/2 [190.5] 9 [228.6] -
-
-
-
-
PRESSURE DROP [PSID]
46GGPPMM 50GPM
MAXIMUM LOAD RESISTANCE VS. SUPPLY VOLTAGE VDC
600GPM
12
30
10 8
5
25
100GPM
2
SUFFICIENT
20
1
200GPM 300GPM
25GPM 12GPM
.5
15
.2
INSUFFICIENT
10
.1
.05 .3 .6 1 2
5 10 15 25 50 100 250 500 200 300
FLOW [GPM]
5
0
0
200
400
600
800
1000
Ø [OHMS]
1252.L7PLMPM 190LPM
2300LPM
MILLIBAR
380LPM
1000 750 600 350
200
100
50 35 20 10
1100LPM760LPM
95LPM 45LPM
5 3.5
2 5 10 20 50 100 200 600 1200 2000
30
300 800 1500
FLOW [LPM]
MODEL CHART
Example CP
Series
CX
CP
CN
CT
CPM
Pipe Size
Battery Option Material
Process Connection
Electrical Connection
Output and Display
Orientation
Special Options
2
-M1 T1
2 3 4 6 8 12 16 24 32
V8
M1 M2 M5 M7 M8
T1 T2 T3 T6
C1
C1 C2 C3 C7 C14
D1 D3 D4E10 D4E1
N1 N2 N3 N4
E14 NIST W1
-W1 CP2-M1T1C1-W1
Polysulfone body vortex shedding flowmeter
Metal body vortex shedding flowmeter with rotatable display
Metal body vortex shedding flowmeter
Metal body vortex shedding flowmeter with temperature sensor and rotatable display
Polysulfone body vortex shedding flowmeter with integral lugs integral to body for
concrete trucks (only available with pipe size 8 or 1)
GPM
LPM
3
11
1/4 (8 mm)
6
23
3/8 (10 mm)
12
45
1/2 (15 mm)
25
95
3/4 (20 mm)
50
190
1 (25 mm)
100
380
1-1/2 (40 mm)
200
750
2 (50 mm)
300
1136
3 (80 mm)
600
2271
4 (100 mm)
No battery
Battery operated
Brass
316 SS
Polysulfone
Brass with nylon endcaps
Brass with nylon hosebarbs
NPT female
BSPT
BSPP
NPT male
Male 5 pin
3-wire pig tail leads 3.3 ft (1 m)
Aluminum conduit box
3-wire pig tail leads with PG7 connector 3.3 ft (1 m)
316 SS conduit box
4-20 mA output with high and low solid state relays
4-20 mA out with 3 digit of rate display (only for series=CPM)
Pulse out with 3 digit display of total (only for series=CPM)
pulse out no display (only for series=CPM)
4-20 mA out with no display (only for series=CPM)
Standard display orientation
Flow right
Flow up
Flow left
Flow down
4-20 mA 2-wire, intrinsically safe
NIST traceable calibration certificate
20:1 extended turndown
Installation For best results, the meters may be installed in any position as long as proper piping installation requirements are observed. This includes sufficient support of adjacent piping to minimize the system's inherent vibration. Unions of the same pipe size and full port isolation ball valves may be installed for ease of removal and servicing of equipment, if necessary. Meters should be placed in horizontal, slightly ascending runs or vertical runs to prevent trapped air from accumulating in the meter. Furthermore, the meters should not be placed at the highest point in the piping. The piping system should be filled slowly to prevent water hammer from damaging the flow sensor. Please note that reverse flow can also damage the flow sensor.
In order to achieve the stated accuracy, a straight pipe run of 10 pipe-diameters (minimum) is required upstream of the meter, as well as 5 pipe-diameters downstream. Isolation ball valves, when used, should be in the full open position. Throttling valves should always be placed downstream of the meter. A minimum straight run of 50 pipediameters is required between an upstream valve and the flowmeter.
If PTFE tape or pipe sealant is used, the user must ensure that no loose parts become wrapped around the bluff or the flow sensor when flow starts.
Use of diaphragm or piston pumps affects the meter's performance unless they are installed with a properly sized pulsation dampener and pressure control. The piping system must create some back pressure on the meter to allow vortex formation and to prevent cavitation, especially at full flow. Minimum required back pressure is 10 psig at maximum flow and at 70°F (21°C). Higher back pressures are required at elevated temperatures and occasional surges to 125% of maximum flow.
In rare situations, the user may notice an intermittent flow display that drops off while the flow is held steady. In this case, please contact Dwyer Instruments to discuss the back pressure requirements.
Electrical Connections
CAUTION The unit shall be supplied by a Class 2 or SELV (safety extra-low voltage) source in accordance with CSA C22.4 No. 61010-1-012.
Failure to do so may result in equipment damage.
WHITE LOAD
BROWN
2
1
5
GRAY
3
4 BLACK
4-20 mA FLOW SIGNAL OUT +24 VDC SUPPLY FLOW RELAY CONTACT FLOW RELAY CONTACT
BLUE
SUPPLY GROUND
CP [FLOW ONLY]
WIRING
PIN CONFIGURATION: 1: +24 VDC POWER SUPPLY 2: 4-20 mA FLOW SIGNAL OUT 3: POWER SUPPLY GROUND 4: FLOW RELAY CONTACT 5: FLOW RELAY CONTACT
21 5 34
WHITE 4-20 mA FLOW SIGNAL OUT BROWN +24 VDC SUPPLY
GRAY FLOW SIGNAL PULSE OUTPUT
BLACK BLUE
SUPPLY GROUND (REDUNDANT)
SUPPLY GROUND
CONFIGURATION: 1: +24 VDC POWER SUPPLY 2: NOT USED 3: SUPPLY GROUND 4: SUPPLY GROUND 5: FLOW SIGNAL PULSE OUTPUT NOTE: THERE IS AN INTERNAL 10K PULL-UP RESISTOR ON THE PULSE OUTPUT LINE (PIN 5).
Totalizer with pulse output
BROWN = +24 VDC LOOP POWER
1
3
4 NOT USED
BLUE = DC LOOP GROUND
CX2 wire transmitter
WHITE 4-20 mA FLOW SIGNAL OUT
BROWN +24 VDC SUPPLY
TURN FLOW RELAY CONTACT FROM A
2 5 3
1
*
SWITCH TO A PULSE OUT BY EXTERNALLY
GRAY FLOW RELAY CONTACT CONECTING A 2K - 10K PULL UP RESISTOR
4
BLACK
FROM POWER SUPPLY TO ONE FLOW RELAY CONTACT AND CONNECTING THE OTHER FLOW RELAY CONTACT FLOW RELAY CONTAC TO SUPPLY GROUND.
BLUE SUPPLY GROUND
CONFIGURATION: 1: +24 VDC POWER SUPPLY 2: 4-20 mA FLOW SIGNAL OUT 3: SUPPLY GROUND 4: FLOW RELAY CONTACT 5: FLOW RELAY CONTACT
PIN connector standard wiring
BROWN LOAD
WHITE BLUE 1 7 PINK
28 6
3 4
5
RED
GRAY YELLOW GREEN
4-20 mA FLOW SIGNAL OUT +24 VDC SUPPLY TEMP RELAY CONTACT 4-20 mA TEMP SIGNAL OUT
TEMP RELAY CONTACT
FLOW RELAY CONTACT FLOW RELAY CONTACT SUPPLY GROUND
PIN CONFIGURATION: 1: +24 VDC POWER SUPPLY 2: 4-20 mA FLOW SIGNAL OUT 3: POWER SUPPLY GROUND 4: FLOW RELAY CONTACT 5: FLOW RELAY CONTACT 6: 4-20 mA TEMP SIGNAL OUT 7: TEMP RELAY CONTACT 8: TEMP RELAY CONTACT
CT (flow and temperatue) wiring
17
28 6 345
BROWN WHITE BLUE PINK
RED
GRAY YELLOW GREEN
4-20 mA FLOW SIGNAL OUT +24 VDC SUPPLY TEMP RELAY CONTACT 4-20 mA TEMP SIGNAL OUT
TEMP RELAY CONTACT
FLOW RELAY CONTACT FLOW RELAY CONTACT SUPPLY GROUND
CT wiring
Operation The CoolPoint® inline flowmeter utilizes the vortex shedding principle. The fluid strikes a bluff body, generating vortices (eddies) that move downstream. The vortices form alternately, from one side to the other. A piezoelectric sensor housed in a sensor tube directly downstream of the bluff senses the pressure zones created by the vortices. The sensor generates a frequency directly proportional to the vortices (flow). The pulses are then amplified by the circuit board and converted to a 4-20 mA output, which is also linear with flow. Flow is displayed on the LEDs in either GPM or LPM. Selection of the preferred units of measure is made by using the SET push button. A solid-state relay can also be set for a low-flow alarm, typically from 15% to 90% of full-scale flow. The relay can be configured to be either NC (normally-closed) or NO (normally-open), or for a pulse output.
SETUP AND CONFIGURATION Factory Default Settings Flow Units: GPM Set Point: 00.0. NO/NC is set to NC. Flow averaging filter set to F 08. Temperature Units: °F
Initial Power Up Upon supplying the initial DC power, the unit goes into a set-up mode. First, it will energize the LED display, showing that all segments of the display functions (8.8.8. is displayed), along with the GPM/LPM LEDs. Then it will display the firmware revision by stating the revision (4.5P for example). Then finally, it will go into the run mode and give the flow rate (or if no flow, 00.0).
FLOW SET POINT RANGES
Setpoint Min. Setpoint Max. Hysteresis
Meter Size GPM LPM GPM LPM GPM LPM
1/4
0.4 1.5 3
12 0.1 0.4
3/8
0.6 2.3 6
23 -
-
1/2
1.2 4.5 12 45 -
-
3/4
3
11 22.5 85 1.2 5
1
7.5 30 45 170 2.5 9
1 1/2
15 56 90
341 5
18
2
30 113 180 682 10 37
3
40 151 280 1059 15 57
4
80 302 560 2119 30 114
When a flow alarm occurs, the second LED (either GPM or LPM) will blink as a visual indicator. Please note the solid LED indicates engineering units of the display and blinking indicates a flow alarm.
One of the two LEDs is lit all the time. Use the SET push button to toggle between the two. If flow is available, the GPM and LPM flow rates will be displayed (again the LPM flow rate is greater than the GPM).
Model CT In addition to the above-mentioned LEDs, there are two more individual LEDs for temperature °F and °C. If the meter is displaying flow, these LEDs are off. Use the MENU push button to toggle between "flow" and "temperature" displays.
CT flowmeters can combine temperature measurement with the flow-measuring feature. An internal temperature sensor, housed in a small thermowell downstream of the flow sensor, measures the liquid temperature. Temperature can be displayed in either degrees Fahrenheit or Celsius, and is selected by using the SET push button. There is an independent 4-20 mA output proportional to temperature and an independent solid-state relay that can be configured as a high temperature alarm. The relay state (NC or NO) is the same as that selected for flow alarm. The user can select either flow or temperature to be displayed on the LEDs by using the MENU push button.
TEMPERATURE SET POINT RANGES
Setpoint Min. Setpoint Max. Hysteresis
Meter Size °F
°C °F
°C °F °C
All CT Models 35 1
200 93 4
2
When the "temperature" display is selected, the GPM and LPM LEDs turn off and either the °F or the °C LED lights up. Use the SET push button to toggle between °F and °C.
Flow Alarm - If a low-flow alarm occurs while the meter is displaying temperature, both GPM and LPM LEDs start blinking. If the meter is in "flow" display mode, the °F and °C LEDs remain off and either the GPM or LPM LED blinks.
Temperature Alarm If a high-temperature alarm occurs while the meter is displaying flow, both °F and °C LEDs start blinking. If the meter is in "temperature" display mode, both the GPM and LPM LEDs remain off, and either the °F or °C LED blinks.
Cleaning: These meters do not require any special cleaning of the external surfaces. If cleaning is deemed necessary, strong solvents, detergents, or chemicals should not be used. A damp cloth may be used to wipe off dirt or debris.
Configuring the solid state relay as alarm output: 1. Make sure the meter is in "flow" display mode. The MENU push button is used to
toggle between the "flow" and "temperature" displays. When in "flow" mode, either the GPM or the LPM LED lights up (both °F and °C LEDs will be off). 2. Press and hold MENU. 3. "FLo" is displayed, followed by either "PUL" (for pulse output) or "ALA" (for alarm output). 4. Release the MENU push button. 5. If "ALA" is displayed, press the SET push button. 6. If "PUL" is displayed, use the MENU push button to change it to "ALA", then press the SET button. 7. The 3-digit value that is displayed is the alarm set point (as stored in the memory). 8. Use the MENU button to change the alarm set point, if needed. Note 1: When MENU is pressed once, the display increments to the next value. If the MENU button is held down, the display will initially increment slowly, then increment more quickly until the maximum allowed set point is reached. It will then roll over to 0 and start from the minimum set point again. Please refer to Table 1 for the range of acceptable flow set points for each flowmeter size. Note 2: When the set point is 0, the flow alarm is disabled. 9. Press the SET push button to store the new set point in the memory. 10.The LED then displays either "nc" (normally-closed) or "no" (normally-open). This is the state of the relay when there is no flow alarm. 11. Use the MENU push button to toggle between "nc" and "no". 12. Use the SET push button to store the new relay configuration in memory.
Alarm Relays and Pulse Output Both CP and CT models can be configured by the user to transmit either a flow alarm signal or a scaled-pulse output. An internal solid-state relay (SSR) is shared between the flow alarm and pulse output.
Model CT has an additional SSR (independent of flow) for transmitting the temperature alarm.
The user menu is entered by pressing (and holding) the MENU push button. In this mode, all subsequent selections must be made within 5 seconds of each other. A period of inactivity (not touching the push buttons) longer than 5 seconds results in the meter's reverting back to normal run mode, without storing the new selection in the memory.
Note: The "LSP" and "HSP" relay contacts are independent of each other and can be set to "nc" or "no" for the flow alarms. When either or both of the alarms are on, the alarm LED will blink.
Pulse Output: There is an output pulse proportional to flow "rate" as well. The pulse output always indicates flow in GPM. It is driven by an internal solid-state relay with a 10K pull-up resistor to supply voltage (pulse width = 3 msec). It should be noted that the pulse output represents instantaneous flow rate, not an averaged value. Therefore, flow jitter may be present when an external rate indicator is used, unless the indicator is capable of filtering or signal averaging.
The totalizer resolution and the corresponding flow rate pulse output depend on the full-scale setting of the flowmeter, as follows:
Configuring the Temperature Alarm Only model CT can be configured by the user to transmit a temperature alarm. An internal solid-state relay (independent of flow) is used as a "high alarm" for temperature, meaning that the alarm signal is transmitted when the temperature set point is exceeded.
In order to configure the temperature alarm output, proceed as follows: 1. Make sure the meter is in "temperature" display mode. The MENU push button is
used to toggle between the "flow" and "temperature" displays. When in "temperature" mode, either the °F or the °C LED lights up (both GPM and LPM LEDs will be off). 2. Press and hold MENU. 3. "t" is displayed, followed by "AL". 4. Release the MENU push button. 5. The 3-digit value that is displayed is the alarm set point (as stored in the memory). 6. Use the MENU button to change the alarm set point, if needed. Note 1: When MENU is pressed once, the display increments to the next value. If the MENU button is held down, the display will initially increment slowly, then increment more quickly until the maximum allowed set point is reached. It will then roll over to 0 and start from the minimum set point again. Please refer to Table 2 for the range of acceptable temperature set points. Note 2: When the set point is 0, the temperature alarm is disabled. 7. Press the SET push button to store the new set point in the memory. Note: The state of the SSR ("nc" - normally-closed) or ("no" - normally-open) is the same as the flow alarm relay, and can only be changed in the flow alarm menu, regardless of whether the meter is configured for flow alarm or flow pulse output. In other words, in order to select "no" or "nc" for temperature alarm relay, you must repeat Steps 1-12 under "Configuring the Flow Alarm". Later, if the meter is reconfigured for scaled-pulse output (flow), it does not affect the temperature relay state.
Configuring the solid state relay as pulse output: In order to configure the flowmeter for scaled-pulse output, proceed as follows: 1. Make sure the meter is in "flow" display mode. The MENU push button is used to
toggle between the "flow" and "temperature" displays. When in "flow" mode, either the GPM or the LPM LED lights up (both °F and °C LEDs will be off). 2. Press and hold MENU. 3. "FLo" is displayed, followed by either "PUL" (for pulse output) or "ALA" (for alarm output). 4. Release the MENU push button. 5. If "PUL" is displayed, press the SET push button. 6. If "ALA" is displayed, use the MENU push button to change it to "PUL", then press the SET button.
Configuring response time in filter mode: The response time for all models (except E4 or D2) can be configured by the user in the range of 0.9 to 7.5 seconds (63% step response). This is achieved by adjusting the "filtering" array size. Slower response typically provides a more steady output signal, as the instantaneous flow variation (dependent on pump, piping, etc.) is averaged out.
It should be noted that the response time refers to the D/A (analog 4-20 mA) output of the flowmeter. The LED display has a slower update rate.
In order to set the response time, proceed as follows:
MAINTENANCE/REPAIR Upon final installation of the Series CP/CN/CT/CX, no routine maintenance is required. The Series CP/CN/CT/CX is not field serviceable and is not possible to repair the unit. Field repair should not be attempted and may void warranty.
WARRANTY/RETURN Refer to "Terms and Conditions of Sale" in our catalog and on our website. Contact customer service to receive a Return Materials Authorization (RMA) number before shipping the product back for repair. Be sure to include a brief description of the problem plus any additional application notes.
1. Make sure the meter is in "flow" display mode. 2. Press and hold the MENU button until "Flo" is displayed. 3. Release the MENU button. 4. Depending on the output mode, either "PUL" or "ALA" will be displayed. 5. After approximately 5 seconds "FLt" will be displayed. 6. When "FLt" is displayed, press the SET button. 7. The current filter setting will be displayed (2, 4, 8, 16, or 32 samples averaged to
produce the output). The letter "F" will be a prefix to the filter value.
Response time for each setting is as shown in the table:
RESPONSE TIME VS. FILTER VALUE
Filter Value Response Time (S)
2
0.9
4
1.4
8
2.3
16
4
32
7.5
FCC Compliance This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. CAN ICES-003(A) / NMB-003(A) This Class A digital apparatus complies with Canadian ICES-003 Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada
8. To change the filter array size, press and release MENU. Alternately, you can press and hold the MENU button and see the values scroll.
9. When the desired filter size is selected, press the SET button. 10. After the filter size is changed, the meter will reboot itself for the changes to take
effect.
Step Response Graphs for Various Filter Settings The following graphs show some examples of the step-response behavior of the meter for various filter settings. The output shown is the 4-20 mA flow signal going from zero to full-scale flow, through a 250- load resistor (no filtering on the analog signal as shown). It is recommended that the user utilizes a filter component (e.g., a 0.1°F capacitor across the load resistor) after installation.
1 VOLT/DIV
FLT = 4
1 VOLT/DIV
1 SEC/DIV FLT = 8
1 VOLT/DIV
1 SEC/DIV FLT = 16
NOTES
__________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________
©Copyright 2022 Dwyer Instruments, LLC
Printed in U.S.A. 11/22
DWYER INSTRUMENTS, LLC
P.O. BOX 373 · MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: 219-879-8000 Fax: 219-872-9057
FR# 444689-00 Rev. 1
www.dwyer-inst.com e-mail: info@dwyermail.com