Dwyer Instruments 629 Operating Manual

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Series 629C Wet/Wet Differential Pressure Transmitter

OPTIONAL 1/4 NPT MALE FITTING

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[35.98]

1-31/32 [50.16]

OPTIONAL LCD

5-15/16 [150.88]

1/4 NPT FEMALE FITTING

7 [177.80]

Specications - Installation and Operating Instructions

Conduit housing

with remote sensor

available in

10´ or 20´ shielded

629C-RS

Option

or armored cable

5-15/16 [150.88]

1/4 NPT FEMALE FITTING

7 [177.80]

Bulletin P-629C

43/64

[17.15]

1-11/32

[34.29]

3-7/64 [78.83]

1-27/64

[35.98]

1-31/32 [50.16]

OPTIONAL LC

The Series 629C Wet/Wet Differential Pressure Transmitter monitors differential pressure of compatible gases and liquids with 0.5% accuracy. The design employs dual pressure sensors converting pressure changes into a 4 to 20 mA or voltage output signal. Small internal volume and minimal moving parts result in exceptional response and reliability. The wiring terminals and zero adjustment button are easily accessed under the removable cover. The Series 629C is designed to meet NEMA 4X (IP66) weatherproof construction.

RANGE Range Number Range Working Pressure* Over Pressure

01 02 03 04 05 06 07 08 09 11 12 13 14 15 16 17 18 19

*Pressures exceeding the working pressure limit may cause a calibration shift of up

to ±3% of full scale. Note: Over pressure of all models with 3-way valve is 100 psi.

Table 1: Pressure Limits

10 psi 20 psi 50 psi 100 psi 200 psi 300 psi 400 psi 600 psi 1000 psi 1 bar 2 bar 4 bar 8 bar 12 bar 20 bar 30 bar 40 bar 60 bar

50 psi 50 psi 120 psi 250 psi 500 psi 750 psi 1000 psi 1200 psi 2000 psi 3 bar 8 bar 8 bar 18 bar 18 bar 50 bar 60 bar 80 bar 120 bar

SPECIFICATIONS

Service: Compatible gases and liquids.

Wetted Materials: Without valve: 316, 316L SS. Additional wetted parts with valve option: Buna-N, silicone grease, PTFE, brass 360, copper, and reinforced copolymer.

Accuracy: ±0.5% FS (includes linearity, hysteresis & repeatability). Stability: ±1% FS/year.

Temperature Limits: 0 to 200°F (-18 to 93°C).

Compensated Temperature Limits: 0 to 175°F (-18 to 79°C).

Pressure Limits: See Table 1. Thermal Effects: Avg 0.04%/°F (0.072%/°C) (includes zero and span).

Power Requirements: 2-wire: 10 to 35 VDC; 3-wire: 13 to 35 VDC or isolated 16 to 33 VAC (reverse polarity protected). Output Signal: 2-wire: 4 to 20 mA; 3-wire: Field selectable 0 to 5, 1 to 5, 0 to 10, or 2 to 10 VDC.

Zero and Units: Push buttons inside conduit enclosure. Response Time: 400 msec. Loop Resistance: Current output: 0 to 1250 Ω (max), Rmax = 50(Vps-10); Voltage

output: Minimum load resistance = 5 kΩ.

Current Consumption: 28 mA (max). Electrical Connections: Removable terminal block; 1/2˝ female NPT conduit. Process Connections: 1/4˝ female or male NPT. Display: Optional 4-1/2 digit LCD eld attachable display. Enclosure Rating: Designed to meet NEMA 4X (IP66) for non-LCD models. Mounting Orientation: Not position sensitive. Weight: 10.1 oz (286 g). Agency Approvals: CE.

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 CHART

7-17/64 [184.66]

[142.11]

[108.33]

3 [76.19]

Example 629C -01 -CH -P1 -E1 -S1 -3V 629C-01-CH-P1-E1-S1-3V Series 629C Wet/wet differential pressure transmitter

Range 01

Housing CH

Process Connection

Electrical

Connection

Signal Output S1

Options 3V

*Pressures exceeding the working pressure limit may cause a calibration shift of up to ±3% of full scale.

02 03 04 05 06 07 08 09 11 12 13 14 15 16 17 18 19

R1 R2 R5 R6

P1 P2 P3 P4

E1 E2 E3 E5 E9

0 to 5 psid 0 to 10 psid 0 to 25 psid 0 to 50 psid 0 to 100 psid 0 to 150 psid 0 to 200 psid 0 to 300 psid 0 to 500 psid 0 to 0.5 bar differential 0 to 1 bar differential 0 to 2 bar differential 0 to 4 bar differential 0 to 6 bar differential 0 to 10 bar differential 0 to 15 bar differential 0 to 20 bar differential 0 to 30 bar differential Conduit housing, NEMA 4X (IP66) Conduit housing, NEMA 4X (IP66), with remote sensor and 10´ shielded cable Conduit housing, NEMA 4X (IP66), with remote sensor and 20´ shielded cable Conduit housing, NEMA 4X (IP66), with remote sensor and 10´ armored cable Conduit housing, NEMA 4X (IP66), with remote sensor and 20´ armored cable

1/4˝ male NPT 1/4˝ female NPT 1/4˝ male BSPT 1/4˝ female BSPT

Cable gland with 3´ of prewired cable Cable gland with 6´ of prewired cable Cable gland with 9´ of prewired cable

1/2˝ female NPT conduit

M-12 4 pin connector (not UL) 4 to 20 mA Field selectable 0 to 5, 1 to 5, 0 to 10, 2 to 10 VDC 3-way valve

Aluminum tag

Factory calibration certicate

LCD

LCD indication

NIST

NIST traceable certicate

INSTALLATION

1. Location: Select a location where the temperature of the unit will be between

0 and 200°F (-18 to 93°C). Distance from the receiver is limited only by total loop resistance (see electrical connections). The tubing feeding pressure to the instrument can be practically any length required, but long lengths will increase the response time slightly. Mount the instrument in a location that will not be subject to excessive

temperature, shock, or vibration.

2. Position: A vertical position is recommended (pressure connections pointing horizontally) since that is how all standard models are spanned and zeroed at the

factory. They can be used at other angles, but may require nal zeroing. Due to

potential condensation buildup that may travel down conduit or cable and into the housing, it is recommended to install with the electrical conduit or cable gland pointing downward.

3. Pressure Connection: Dual 1/4˝ NPT pressure connections are provided. Use pipe thread sealant tape or other suitable pipe joint compound when making connection to the pressure source. Avoid excess sealant which could block the pressure passage.

When monitoring liquid pressures, air trapped in the lines can cause incorrect readings.

Bleed ttings or similar mechanisms should be used to bleed off any trapped air.

Optional 3-Way Valve

For applications where higher line pressures may be encountered at installation or when it is necessary to remove the transmitter for maintenance without interrupting the process, the optional three way valve is recommended. (See Figure 1)

2-13/32

[60.96]

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Figure 1: 629C with Optional 3-Way Valve

Installation with 3-way valve option. Begin with valve V1 open and valves V2 and

VIN

BLEED FITTING

PRESSURE

PIPE

TERMINAL 4: (-)

TERMINAL

V3 closed. (See Figure 2) Slowly open valves V2 and V3. Once the pressure has stabilized and is equal on the high and low side of the transmitter, valve V1 can be closed and normal operation can proceed.

HIGH SIDE

LOW SIDE

Install the high and low remote sensors in respective locations in the process. Use

of thread sealant is recommended to prevent leaks. During installation, care must be taken to ensure that the serial number on the sensor matches the serial number on the transmitter housing. Additionally, a check must be made to ensure that the check box for high or low pressure on the sensor matches the check box for high or low pressure on the cable tag. The sensor with a mark in the “High Pressure” box should be connected to the higher pressure, and the sensor with a mark in the “Low Pressure”

box should be connected to the lower pressure in order to ensure accurate readings. The vent hole on the side of the unit should not be covered by anything aside from

the ber lter installed from the factory. Do not remove the ber lter installed over the

vent hole.

After sensor installation, attach the cable to the sensor by means of the M-12 connector shown in Figure 4. The cables connecting the sensors to the transmitter housing can only be disconnected at the sensor by means of the M-12 connectors. No attempt should be made to disconnect remote cables at the transmitter housing.

Figure 2: Bleed Fitting Connections

To ensure proper pressures will be detected by the 629C, use the bleed ttings provided with this package to free media of bubbles. Before applying pressure to the process connections, turn V1 to the open position and back off either the low or high side bleed hex nut. Next, apply pressure. After the owing liquid is free of bubbles,

retighten the bleed hex nut.

Before removing the transmitter from operation, open valve V1, then close valves V2 and V3.

Optional Remote Sensor Installation

For both shielded cable and armored cable versions of remote sensors option, follow standard installation procedures.

CAUTION:

ALWAYS USE WRENCH ON PRESSURE BLOCK WHEN TIGHTENING FITTING. NEVER PUT STRESS ON HOUSING.

1: (+)

TERMINAL (GROUND)

Figure 4: M-12 Connector

For applications where differential pressure is measured at high line pressure, it is recommended to install pressure sensor with a valve in each line and a shunt valve across the high and low pressure ports (see Figure 5).

629C-RS

HIGH

REMOTE

SENSOR

SHUNT

VALV E

SHUNT

VALV E

LOW

REMOTE

SENSOR

Figure 5: Sensor Installation with Valves

ELECTRICAL CONNECTIONS

Shielded cable is recommended for control loop wiring. Electrical connections to the

Series 629C pressure transmitters are made to the terminal block located inside the housing. Remove the screws and lift off the cover. Wire as shown in Figure 6 or 7. Use

Figure 6 for current output connection. Use Figure 7 for current output with optional

LCD display. If ordering pre-wired cable, black wire is negative (-) and red wire is

positive (+).

Figure 3: 629C with Remote Sensor

PRESSURE

TRANSMITTER

COM

2 3 4

RECEIVER

SHIELD

Figure 6: Current Output Connection

POWER

SUPPLY

10-35 VDC

VIN

LCD CONNECTOR. FAILURE TO DO SO CAN RESULT IN GAGE DAMAGE.

CONNECTION

UNIT BUTTON-PRESS TO TOGGLE THE

ZERO BUTTON-PRESS AND

OR ISOLA

CONNECTION

LOW [-]

UNIT BUTTON-PRESS TO TOGGLE THE

ZERO BUTTON- PRESS AND

TRANSMITTER CONNECTION INSTRUCTION:

- TURN OFF POWER SUPP

- CONNECT THE POWER SUPPL [TERM #2] OF THE GAGE AS SHOWN

- INST

- TURN ON POWER

CAUTION: BE SURE TO TURN OFF POWER WHEN CONNECTING OR REMOVING THE LCD CONNECTOR. FAILURE TO DO SO CAN RESULT IN GAGE DAMAGE.

PRESSURE

CONNECTION

POWER

SUPPLY

10-35 VDC

UNIT [PSID/BARD] ON THE LCD

Vin [TERM #1]

Com [TERM #2]

RECEIVER

SHIELD [TERM #4]

RED

BLACK

BLUE

ORANGE

YELLOW

WHITE

HOLD TO ZERO THE GAGE

LCD CONNECTOR

HI [+] PRESSURE

For voltage outputs, wire as shown in Figure 9 for voltage output connection. Use Figure 10 for voltage output with optional LCD display. Terminal 1 is positive (+), terminal 2 is negative (-), and terminal 3 is +Vout. If ordering optional prewired cable,

black wire is negative (-), red wire is positive (+), and white wire is +Vout. For optimal

accuracy, use a separate common wire for the receiver.

PRESSURE

TRANSMITTER

COM

3 4

SHIELD

Figure 9: Voltage Output Connection

RECEIVER

POWER

SUPPLY

13-35 VDC

OR 16-33 VAC

LY.

Y AND RECEIEVER TO Vin [TERM #1] AND Com

L max =

vps - 10

20 mA DC

OFF

1 to 5 VDC

1 2

ALL THE LCD'S CONNECTOR TO THE GAGE AS SHOWN.

Wire Length – The maximum length of wire connecting transmitter and receiver is a function of wire size and receiver resistance. Wiring should not contribute to more than 10% of receiver resistance to total loop resistance. For extremely long runs (over 1000 ft or 305 m), choose receivers with higher resistance to minimize size and cost of connecting leads. When wiring length is under 100 ft (30.5 m), lead wire as small as 22 AWG can be used.

Current (4 to 20 mA) Output Operation – An external power supply delivering 10 to 35 VDC with minimum current capability of 40 mA DC (per transmitter) is required to power the control loop. See Figure 9 for connection of the power supply, transmitter,

and receiver. The range of the appropriate receiver load resistance (RL) for the DC

power supply voltage available is expressed by the formula

VOLTAGE (0 TO 5, 1 TO 5, 0 TO 10, OR 2 TO 10 V) OUTPUT OPERATION

To select the voltage output that is going to be used, congure the dip switches

according to the Figure 8 below. Power must be cycled whenever dip switches are changed to select output.

OFF

Figure 7: Current Output with Optional LCD

0 to 5 VDC

1 2

0 to 10 VDC 2 to 10 VDC

1 2

UNIT [PSID/BARD] ON THE LCD

LOW [-]

PRESSURE

CONNECTION

POWER SUPPLY

13-35 VDC

TED

16-33 VAC

TRANSMITTER CONNECTION INSTRUCTION:

- TURN OFF POWER SUPPLY.

- CONNECT THE POWER SUPPLY [+] TO Vin [TERM #1] AND [-] TO Com [TERM #2] OF THE GAGE AS SHOWN.

- CONNECT THE RECEIVER [+] TO Vo [TERM #3] OF THE GAGE AND RECEIVER [-] TO POWER SUPPLY [-].

- INSTALL THE LCD'S CONNECTOR TO THE GAGE AS SHOWN.

- SET VOLTAGE SELECTION DIP SWITCH TO DESIRED VOLTAGE OUTPUT.

- TURN ON POWER.

CAUTION: BE SURE TO TURN OFF POWER WHEN CONNECTING OR REMOVING THE

MAINTENANCE/REPAIR

Upon nal installation of the Series 629C Wet/Wet Differential Pressure Transmitter, no routine maintenance is required. The Series 629C is not eld serviceable and is not

possible to repair the unit. Field repair should not be attempted and may void warranty.

This symbol indicates waste electrical products should not be disposed

of with household waste. Please recycle where facilities exist. Check with

your Local Authority or retailer for recycling advice.

WARRANTY/RETURN

Refer to “Terms and Conditions of Sale” in our catalog and on our website. Contact customer service to receive a Return Material Authorization number before shipping the product back for repair. Be sure to include a brief description of the problem plus

any additional application notes.

Vin [TERM #1]

Com [TERM #2]

Vo [TERM #3]

RECEIVER

SHILED [TERM #4]

RED

BLACK

BLUE

Figure 10: Voltage Output with Optional LCD Display

ORANGE

YELLOW

WHITE

HOLD TO ZERO THE GAG

LCD CONNECTOR

VOLTAGE SELECTION DIP SWITCH

HI [+] PRESSURE

OFF

Figure 8: Voltage Output Dip Switch Selection

DWYER INSTRUMENTS, INC.

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.

OFF

Phone: 219/879-8000

Fax: 219/872-9057

www.dwyer-inst.com

e-mail: info@dwyermail.com

Dwyer Instruments 629 Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual