Omega CP, CN, CT, CX User guide

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Page 1

USER’S GUIDE

Series CP/CN/CT/CX |

CoolPoint® Vortex Shedding

Flowmeter

Specifications - Installation and Operating Instructions

dwyer-inst.com | [email protected]

For latest product manuals: dwyer-inst.com/en/instruction-manuals Bulletin F-CP-CN-CT-CX

Page 2

CONTACT

Dwyer Instruments, LLC

dwyer-inst.com/en/contact-us

Toll-Free:

1-800-872-9141

(USA only)

Telephone: (219) 879-8000

Fax: (219) 872-9057

Email: [email protected]

The information contained in this document is believed to be correct, but Dwyer accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.

Page 3

Table of Contents

1. Introduction ......................................................................................................................................................................... 4

2. Specifications ..................................................................................................................................................................... 4

3. Installation ........................................................................................................................................................................... 8

4. Electrical Connections ..................................................................................................................................................... 8

5. Operation ............................................................................................................................................................................. 9

6. Setup And Configuration ................................................................................................................................................. 10

6.1. Initial Power Up.....................................................................................................................................................................10

6.2. Model CT .................................................................................................................................................................................10

6.3. Configuring the solid state relay as alarm output: .................................................................................................10

6.4. Alarm Relays and Pulse Output .....................................................................................................................................11

6.5. Configuring the Solid State Relay as Pulse Output: ...............................................................................................11

6.5.1. Pulse Output....................................................................................................................................................................11

6.6. Configuring the Temperature Alarm .............................................................................................................................11

6.7. Configuring Response Time in Filter Mode: ............................................................................................................... 13

6.8. Step Response Graphs for Various Filter Settings ..................................................................................................13

7. Maintenance/Repair .......................................................................................................................................................... 14

8. Warranty/Return................................................................................................................................................................. 14

9. FCC Compliance ............................................................................................................................................................... 14

Table of Contents

Page 4

1. Introduction

The Series CP/CN/CT/CX CoolPoint® Vortex Shedding Flowmeter is made for water, water/glycol mixtures, or low

viscosity uids. These units contain no moving parts to clog or wear, allowing for minimal maintenance in the eld. This series has two versions: a 3-wire version, where power is supplied separate from the 4 mA to 20 mA output, and a 2-wire loop-powered version. The 3-wire version is equipped with a solid state relay that can be congured in the eld 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 specic 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.

2. Specifications

Service: Compatible liquids. Range: See ow rate chart. Display: 3-digit or 4-digit LED (pipe sizes > 76.2 mm [3 in]), 7.6 mm (0.3 in) digit height; CP-V8: 3-digit LCD (6-digit

LCD totalizer mode), 7.6 mm (0.3 in) digit height.

Wetted Materials: Flow body: 316 SS or brass; Sensor: PEEK; Seals: FKM. Accuracy: Flow: ± 2 % FS; Temperature: ±0.1 °C (± 2 °F) (model selectable). Repeatability: ± 0.25 % of reading. Turndown: 10:1 (20:1 optional). Temperature Limits: 2 °C to 99 °C (35 °F to 210 °F). Pressure Limits: 0.7 bar to 20.7 bar (10 psig to 300 psig); CP ange and CX: 20.7 bar (200 psig) max. Response Time: 450 ms Power Requirements: 10 V dc to 30 V dc @ 80 mA standard; 25 mA for 2 wire option; CP-V8: 2 AA alkaline

batteries, not included (45 day battery life).

Output: 4 mA to 20 mA; 100 pulses per gallon (3-wire models only); 2 in, 3 in, and 4 in: 25 pulses per gallon. Deadband: Alarm output: 2.5 % FS for up to  in; 5 % FS for larger than  in. 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: 0.7 kg (1.5 lb); CP: 1.5 kg (3.3 lb); CP-V8: 1.8 kg (4 lb); CN, CT: 3.2 kg (7 lb). Compliance: CE, ETL.

4 Series CP CN CT CX User's Manual

Page 5

NPT FEMALE

CONNECTION

NPT FEMALE

CONTROL BOX CAN

BE ROT

PIG TAIL CONNECTION

CONNECTION

F APPROXIMATE

FLOW

CONTROL BOX CAN BE ROTATED

CONDUIT CONNECTION

3-1/4 MAX.

[33 MM]

DETENTED POSITIONS

POSITION N2

F APPROXIMATE

ATEDTO ANY

OF [4] DETENTED

OUT

POSITIONS IN

90° INCREMENTS

CONNECTIO

POSITION N3

CONTROL BOX

CAN BE ROTATED

TO ANY OF [4]

IN 90° INCREMENTS

[83 MM]

CP2, CP3, CP4

POSITION N4

OUT

4.592 MAX. [117 MM]

MOUNTING LUGS FOR

Ø.31 [5/16] BOLTS. [4] PLACES.

CPM8

OUT

CPX-V8

5 MAX. [127 MM]

FLOW DIRECTION

POSITION N1

E APPROXIMAT

SWING RADIUS

ØH

OPTIONAL -C2

CTx (shown with -C2 pig tail connection)

1.312

TO ANY OF [4] DETENTED

POSITIONS IN 90° INCREMENTS

FLOW

OUT

.500-14 NPT

SWING RADIUS

CXX-M5

CP24, 32 (shown with -C3/-C14 conduit box)

CP/CN6, CP/CN8, CN12, CN16

NPT FEMALE

CX8-M7

SWING RADIUS

Figure 1: Dimensions

5Specications

Page 6

Model Option A in [mm] B in [mm] C in [mm] D in [mm] E in [mm] F in [mm] G in [mm] H in [mm]

FLOW [GPM]

50GPM

CT2-CT8

CT12,

CT16 CP2-V8 CP3-V8 CP4-V8 CP6-V8 CP8-V8

CP12-V8 CP16-V8

Standard

4-1/2 [114.3] 2-1/4 [57.15]

6-3/4

[171. 4 5]

1-5 3/6 4

[46.48]

3-3/8 [85.72]

3-21/32

[92.71]

2-1/4 [57.15] 4-1/2 [114.3] 2-3/4 [69.8 5]

3-3/8 [85.72]

6-3/4

[171. 4 5]

4- 3/64 [102.62] 4-23/32 [119. 85]

2-3/8 [60.32]

2-7/8 [ 73.02]

CPM8 2-7/8 [ 73] 2-1 /2 [63 . 5] 2 [51] - - - - -

CP2,

CP3, CP4

CN6,

CN8

CP6, CP8 4-1/2 [114.3] 2-1/4 [57.15]

CN12,

C1 and C2

options CN16 CP24

CT24

CP32

CT32

CP2,

CP3, CP4

CN6,

CN8

3-1/4 [82.55]

4-1/2 [114.3] 2-1/4 [57.15]

6-3/4

[171. 4 5]

7-3/4

[196. 85]

10-3/4

[273.05]

3-1/4 [82.55]

4-1/2 [114.3] 2-1/4 [57.15]

CP6, CP8 4-1/2 [114.3] 2-1/4 [57.15]

CN12,

CN16

CP12,

CP16

C3 = Conduit

box

6-3/4

[171. 4 5]

6-3/4

[171. 4 5]

CT2-CT8 4-1/2 [114.3] 2-1/4 [57.15]

CT12,

CT16

CP24

CT24

CP32

CT32

CX8

CX2,

CX3, CX4

CX6, CX8

CX2,

CX3, CX4

CX6, CX8

M7 = Hose

barb

M8 = Nylong

Endcaps

T1 = NPT

female thread

T1 = NPT

female thread

T6 = NPT

male thread

T6 = NPT

male thread

6-3/4

[171. 4 5]

7-3/4

[196. 85]

10-3/4

[273.05]

3-3/16 [80.96]

2-1 /2 [63 . 5]

1-6 3/6 4

[50.29]

2-3/8 [60.32]

3-5/16 [83.82]

1-11 /6 4

[41.15]

3-1/4 [82.55]

3- 35/64

[9 0.17 ] 4- 3/64

[102.62]

3-3/8 [85.72] 4-1 /4 [10 7.7 ]

3-7/8

[98.55]

5-3/5 [136.65] 1-11 /6 4

[41.15]

8-29/32

[226]

9-15/ 32

[240] 5-13/32 [1 37.1 6] 5-11/16 [144 .53] 6- 33/64 [16 5.61]

3-3/8 [85.72] 6 [152.4]

3- 3/5 [91.44] 6 -7/8 [ 174.5]

6- 3/6 4

[16 5.61]

3-3/8 [85.72]

3-7/8

[98.55]

5-3/5 [136.65] 6-23/6 4 [161. 54] 4- 61/64 [125.73] 3-31/32 [100.84]

4-3/4 [120.65] 4-23/32 [119. 85] 6- 39/6 4 [167. 8 9]

6-23/32

[174 . 5]

8-29/32

[226]

9-15/ 32

[240]

2-1 /2 [63 . 5]

2-13/32

[60.96]

2-13/32

[60.96]

2-13/32

[60.96]

2-23/64

[59.94]

2-13/32

[60.96]

4- 59/6 4 [124.97]

6-9/64

[155.96]

5-29/32

[50.11]

6-7/16 [16 3.51] 7-11 /1 6 [195. 33]

4- 5/6 4 [103.38] 4- 39/6 4 [116.84] 4- 59/6 4 [124.97] 5- 55/64 [148.59]

11-1 /8 [282.57]

12 -37/64

[319.48]

4- 5/6 4 [103.38] 4- 39/6 4 [116.84] 4- 59/6 4 [124.97] 5- 55/64 [148.59]

6-9/64 [155.96] 4- 59/6 4 [124.97]

6-9/64 [155.96]

11-1 /8 [282.57]

12 -37/64

[319.48] 2-27/3 2

[72.14] 2-13/16

[71.37] 4-13/16 [122.17] 2-13/16

[71.37] 2-13/16

[71.37]

3-3/4 [95.25]

4- 61/64 [125.73]

5-17/6 4

[133.6]

4-3/16

[106.43]

4-3/16

[106.43]

- -

- - -

6 [152.4] - - -

2-15/6 4

[59.44]

2-3/4 [69.8 5]

3-3/4 [95.25]

2-49/64

[70.36] 3-3/16 [80.96] 4-3/16

[106.43]

- -

2-7/8 [ 73.02] 3-1/4 [82.55] - -

11-1 /8

[282.57]

12 -37/64

[319.48]

2-15/6 4

[59.44]

2-3/4 [69.8 5]

3-3/4 [95.25]

2-7/8 [ 73.02]

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 [10 8.71] 4- 55/64 [123.19]

7-1/2

[190. 5]

[228.6] 6-13/3 2 [162. 81] 6- 51/64 [172.47] 7-51/6 4 [198.04] 6- 55/64 [173.99] 7-51/6 4 [198.04] 7-51/6 4 [198.04] 7-51/6 4 [198.04]

7-1/2

[190. 5]

[228.6] 3- 39/6 4

[91. 69] 3- 39/6 4

[91. 69] 3-13/16

[96.52] 3- 39/6 4

[91. 69] 3-13/16

[96.52]

5-47/64

[146]

6-7/16

[16 3.51]

- -

5-47/64

[146]

6-7/16

[16 3.51]

- -

7-1/2

[190. 5]

[228.6]

7-1/2

[190. 5]

[228.6]

6GPM

12GPM

25GPM

4GPM

100GPM

200GPM

300GPM

200

250

300

600GPM

500

8 5

PRESSURE DROP [PSID]

.05

.3 .6 12 510152550 100

6 Series CP CN CT CX User's Manual

Page 7

Ø [OHMS]

1000

MAXIMUM LOAD RESISTANCE VS. SUPPLY VOLTAGE

VDC

FLOW [LPM]

MILLIBAR

1000

750 600 350

200

100

50 35

20 10

3.5 2510 203050 100 200

45LPM

95LPM

15LPM

22.7LP

380LPM

760LPM

1100LPM

300

190L

800

1200

1500

2300LP

2000600

SUFFICIENT

200 400 600 800

MODEL CHART

Example CP 2 -M1 T1 C1 -W1 CP2-M1T1C1-W1

Series

CX CP CN CT

Polysulfone body vortex shedding owmeter Metal body vortex shedding owmeter with rotatable display Metal body vortex shedding owmeter Metal body vortex shedding owmeter with temperature sensor and rotatable display

CPM

Polysulfone body vortex shedding owmeter with integral lugs integral to body for concrete trucks (only available with pipe size 8 or 1˝)

GPM LPM

Pipe Size

6 8 12 16 24 32

Battery

Option

M1 M2

Material

M5 M7 M8

Process

Connection

Electrical

Connection

Output and

Display

Orientation

Special

Options

T1 T2

C1 C2

C7 C14

D1 D3 D4E10 D4E1

N1 N2

E14 NIST W1

6 12 25 50 100 200 300 600

11 23 45 95 190 380 750 1136 2271

8 mm (1/4 in) 10 mm (3/8 in) 15 mm (1/2 in) 20 mm (3/4 in) 25 mm (1 in) 40 mm (1-1/2 in) 50 mm (2 in) 80 mm (3 in) 100 mm (4 in)

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 1 m (3.3 ft) Aluminum conduit box 3-wire pig tail leads with PG7 connector 1 m (3.3 ft) 316 SS conduit box

4 mA to 20 mA output with high and low solid state relays 4 mA to 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 mA to 20 mA out with no display (only for series=CPM)

Standard display orientation

Flow right

Flow up

Flow left Flow down

4 mA to 20 mA 2-wire, intrinsically safe NIST traceable calibration certicate 20:1 extended turndown

INSUFFICIENT

7Specications

Page 8

3. Installation

WHITE

LOAD

5: FLOW RELAY CONTACT

WHITE

RESISTOR ON THE PULSE OUTPUT LINE (PIN 5).

BROWN = +24 VDC LOOP POWER

BLUE = DC LOOP GROUND

WHITE

5: FLOW RELAY CONTA CT

For best results, the meters may be installed in any position as long as proper piping installation requirements are observed. This includes sufcient 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 lled slowly to prevent water hammer from damaging the ow sensor. Please note that reverse ow can also damage the ow 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 owmeter.

If PTFE tape or pipe sealant is used, the user must ensure that no loose parts become wrapped around the bluff or the ow sensor when ow 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 ow. Minimum required back pressure is 0.689 bar (10 psig) at maximum ow and at 21 °C (70 °F). Higher back pressures are required at elevated temperatures and occasional surges to 125 % of maximum ow.

In rare situations, the user may notice an intermittent ow display that drops off while the ow is held steady. In this case, please contact Dwyer Instruments to discuss the back pressure requirements.

4. 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.

4-20 mA FLOW SIGNAL OUT

+24 VDC SUPPLY

FLOW RELAY CONTA CT

SUPPLY GROUND

PIN connector standard wiring

NOT USED

CX2 wire transmitter

TURN FLOW RELAY CONTA CT FROM A SWITCH TO A PULSE OUT BY EXTERNALLY CONECTING A 2K - 10K Ω PULL UP RESISTOR FROM POWER SUPPLY TO ONE FLOW RELAY CONTACT AND CONNECTING THE OTHER FLOW RELAY CONTAC TO SUPPLY GROUND.

CONFIGURATION: 1: +24 VDC POWER SUPPLY 2: 4-20 mA FLOW SIGNAL OUT 3: SUPPLY GROUND 4: FLOW RELAY CONTA CT

BROWN

GRAY

BLACK

BLUE

[FLOW ONLY]

BROWN

GRAY

BLACK

BLUE

+24 VDC SUPPLY

FLOW RELAY CONTACT

SUPPLY GROUND

WIRING

4-20 mA FLOW SIGNAL OUT

+24 VDC SUPPLY

FLOW SIGNAL PULSE OUTPUT

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 Ω PULL-UP

Totalizer with pulse output

PIN CONFIGURATION: 1: +24 VDC POWER SUPPLY 2: 4-20 mA FLOW SIGNAL OU 3: POWER SUPPLY GROUND 4: FLOW RELAY CONTACT

BROWN

GRAY

BLACK

BLUE

Figure 2a: Pin diagrams

8 Series CP CN CT CX User's Manual

Page 9

BROWN

LOAD

8: TEMP RELAY CONTACT

SUPPLY GROUND

BROWN

WHITE

BLUE

PINK

RED

GRAY YELLOW GREEN

CT (ow and temperatue) wiring

4 mA to 20 mA FLOW SIGNAL OUT +24 V DC SUPPLY TEMP RELAY CONTACT

4 mA to 20 mA TEMP SIGNAL OUT

TEMP RELAY CONTACT

FLOW RELAY CONTACT FLOW RELAY CONTACT SUPPLY GROUND

PIN CONFIGURATION: 1: +24 V DC POWER SUPPLY 2: 4 mA to 20 mA FLOW SIGNAL OU 3: POWER SUPPLY GROUND 4: FLOW RELAY CONTACT 5: FLOW RELAY CONTACT 6: 4 mA to 20 mA TEMP SIGNAL OUT 7: TEMP RELAY CONTACT

Figure 2b: Pin diagrams

WHITE

YELLOW

GREEN

4 mA to 20 mA FLOW SIGNAL OU +24 V DC SUPPLY

BLUE

TEMP RELAY CONTACT

PINK

4 mA to 20 mA TEMP SIGNAL OUT

RED

TEMP RELAY CONTACT

GRAY

FLOW RELAY CONTACT FLOW RELAY CONTACT

CT wiring

5. Operation

The CoolPoint® inline owmeter utilizes the vortex shedding principle. The uid 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 (ow). The pulses are then amplied by the circuit board and converted to a 4 mA to 20 mA output, which is also linear with ow. 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-ow alarm, typically from 15 % to 90 % of full-scale ow. The relay can be congured to be either NC (normally-closed) or NO (normally-open), or for a pulse output.

Flow Set Point Ranges

Meter Size

6.35 mm (1/4 in)

9.53 mm (3/8 in)

12.7 mm (1/2 in)

19.05 mm (3/4 in)

25.4 mm (1 in)

38.1 mm (1  in)

50.8 mm (2 in)

76.2 mm (3 in)

101.6 mm (4 in)

Setpoint Min. Setpoint Max. Hysteresis

GPM LPM GPM LPM GPM LPM

0.4

0.6

1.2

7.5 15 30 40 80

1.5

2.3

4.5

11 30

56 113 151 302

22.5 45 90

180 280 560

12 23 45 85 170 341 682 1059 2119

0.1

1.2

2.5 5 10 15 30

0.4

9 18 37 57

114

CT owmeters can combine temperature measurement with the ow-measuring feature. An internal temperature sensor, housed in a small thermowell downstream of the ow 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 mA to 20 mA output proportional to temperature and an independent solidstate relay that can be congured as a high temperature alarm. The relay state (NC or NO) is the same as that selected for ow alarm. The user can select either ow or temperature to be displayed on the LEDs by using the MENU push button.

Temperature Set Point Ranges

Meter Size

Setpoint Min. Setpoint Max. Hysteresis

°F °C °F °C °F °C

All CT Models 35 1 200 93 4 2

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.

9Operation

Page 10

6. Setup And Configuration

Factory Default Settings

Flow Units: GPM Set Point: 00.0. NO/NC is set to NC. Flow averaging lter set to F 08. Temperature Units: °F

6.1. 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 rmware revision by stating the revision (4.5P for example). Then nally, it will go into the run mode and give the ow rate (or if no ow, 00.0).

When a ow 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 ow alarm. One of the two LEDs is lit all the time. Use the SET push button to toggle between the two. If ow is available, the GPM and LPM ow rates will be displayed (again the LPM ow rate is greater than the GPM).

6.2. 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 ow, these LEDs are off. Use the MENU push button to toggle between “ow” and “temperature” displays.

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-ow alarm occurs while the meter is displaying temperature, both GPM and LPM LEDs start blinking. If the meter is in “ow” 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 ow, 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.

6.3. Configuring the solid state relay as alarm output:

Step 1: Make sure the meter is in “ow” display mode. The MENU push button is used to toggle between the

“ow” and “temperature” displays. When in “ow” mode, either the GPM or the LPM LED lights up (both °F and °C LEDs will be off).

Step 2: Press and hold MENU.

Step 3: “FLo” is displayed, followed by either “PUL” (for pulse output) or “ALA” (for alarm output).

Step 4: Release the MENU push button.

Step 5: If “ALA” is displayed, press the SET push button.

Step 6: If “PUL” is displayed, use the MENU push button to change it to “ALA”, then press the SET button.

Step 7: The 3-digit value that is displayed is the alarm set point (as stored in the memory).

Step 8: Use the MENU button to change the alarm set point, if needed.

Note

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 ow set points for each owmeter size.

When the set point is 0, the ow alarm is disabled.

Step 9: Press the SET push button to store the new set point in the memory.

Step 10: The LED then displays either “nc” (normally-closed) or “no” (normally-open). This is the state of the

relay when there is no ow alarm.

10 Series CP CN CT CX User's Manual

Page 11

Step 11: Use the MENU push button to toggle between “nc” and “no”.

Step 12: Use the SET push but ton to store the new relay conguration in memory.

6.4. Alarm Relays and Pulse Output

Both CP and CT models can be congured by the user to transmit either a ow alarm signal or a scaledpulse output. An internal solid-state relay (SSR) is shared between the ow alarm and pulse output.

Model CT has an additional SSR (independent of ow) 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 ow alarms. When either or both of the alarms are on, the alarm LED will blink.

6.5. Configuring the Solid State Relay as Pulse Output:

In order to congure the owmeter for scaled-pulse output, proceed as follows:

Step 1: Make sure the meter is in “ow” display mode. The MENU push button is used to toggle between the

“ow” and “temperature” displays. When in “ow” mode, either the GPM or the LPM LED lights up (both °F and °C LEDs will be off).

Step 2: Press and hold MENU.

Step 3: “FLo” is displayed, followed by either “PUL” (for pulse output) or “ALA” (for alarm output).

Step 4: Release the MENU push button.

Step 5: If “PUL” is displayed, press the SET push button.

Step 6: If “ALA” is displayed, use the MENU push button to change it to “PUL”, then press the SET button.

6.5.1. Pulse Output

There is an output pulse proportional to ow “rate” as well. The pulse output always indicates ow in GPM. It is driven by an internal solid-state relay with a 10K pull-up resistor to supply voltage (pulse width = 3 ms). It should be noted that the pulse output represents instantaneous ow rate, not an averaged value. Therefore, ow jitter may be present when an external rate indicator is used, unless the indicator is capable of ltering or signal averaging.

The totalizer resolution and the corresponding ow rate pulse output depend on the full-scale setting of the owmeter, as follows:

6.6. Configuring the Temperature Alarm

Only model CT can be congured by the user to transmit a temperature alarm. An internal solid-state relay (independent of ow) 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 congure the temperature alarm output, proceed as follows:

Step 1: Make sure the meter is in “temperature” display mode. The MENU push button is used to toggle

between the “ow” and “temperature” displays. When in “temperature” mode, either the °F or the °C LED lights up (both GPM and LPM LEDs will be off).

Step 2: Press and hold MENU.

Step 3: “t” is displayed, followed by “AL”.

Step 4: Release the MENU push button.

Step 5: The 3-digit value that is displayed is the alarm set point (as stored in the memory).

11Setup And Conguration

Page 12

Step 6: Use the MENU button to change the alarm set point, if needed.

Note

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.

When the set point is 0, the temperature alarm is disabled.

Step 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 ow alarm relay, and can only be changed in the ow alarm menu, regardless of whether the meter is congured for ow alarm or ow pulse output. In other words, in order to select “no” or “nc” for temperature alarm relay, you must repeat Steps 1 through 12 under “Conguring the Flow Alarm”. Later, if the meter is re-congured for scaledpulse output (ow), it does not affect the temperature relay state.

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6.7. Configuring Response Time in Filter Mode:

1 SEC/DIV

The response time for all models (except E4 or D2) can be congured by the user in the range of 0.9 s to

7.5 s (63 % step response). This is achieved by adjusting the “ltering” array size. Slower response typically provides a more steady output signal, as the instantaneous ow variation (dependent on pump, piping, etc.) is averaged out.

It should be noted that the response time refers to the D/A (analog 4 mA to 20 mA) output of the owmeter. The LED display has a slower update rate.

In order to set the response time, proceed as follows:

Step 1: Make sure the meter is in “ow” display mode.

Step 2: Press and hold the MENU button until “Flo” is displayed.

Step 3: Release the MENU button.

Step 4: Depending on the output mode, either “PUL” or “ALA” will be displayed.

Step 5: After approximately 5 seconds “FLt” will be displayed.

Step 6: When “FLt” is displayed, press the SET button.

Step 7: The current lter setting will be displayed (2, 4, 8, 16, or 32 samples averaged to produce the output).

The letter “F” will be a prex to the lter value.

Response time for each setting is as shown in the table:

Response Time vs.

Filter Value

Filter

Value

2 4

8 16 32

Response

Time (S)

0.9

1.4

2.3 4

7.5

Step 8: To change the lter array size, press and release MENU. Alternately, you can press and hold the

MENU button and see the values scroll.

Step 9: When the desired lter size is selected, press the SET button.

Step 10: After the lter size is changed, the meter will reboot itself for the changes to take effect.

6.8. Step Response Graphs for Various Filter Settings

The following graphs show some examples of the step-response behavior of the meter for various lter settings. The output shown is the 4 mA to 20 mA ow signal going from zero to full-scale ow, through a 250Ω load resistor (no ltering on the analog signal as shown). It is recommended that the user utilizes a lter component (e.g., a 0.1 °F capacitor across the load resistor) after installation.

1 SEC/DIV

FLT = 4

1 VOLT/DIV

Figure 3: Step-response behavior graphs

FLT = 8

1 VOLT/DIV

1 SEC/DIV

FLT = 16

13Setup And Conguration

Page 14

7. Maintenance/Repair

Upon nal installation of the Series CP/CN/CT/CX, no routine maintenance is required. The Series CP/CN/CT/CX is not eld serviceable and is not possible to repair the unit. Field repair should not be attempted and may void warranty.

8. 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.

9. 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 modications 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

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