Dwyer Instruments 629 Operating Manual

Series 629C Wet/Wet Differential Pressure Transmitter

OPTIONAL 1/4 NPT MALE FITTING

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OPTIONAL LCD

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Specications - Installation and Operating Instructions

Conduit housing

with remote sensor

available in

10´ or 20´ shielded

629C-RS

Option

or armored cable

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Bulletin P-629C

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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

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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)

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Figure 1: 629C with Optional 3-Way Valve

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