Dwyer Instruments 629 Specifications
®
SERIES 629C | WET/WET DIFFERENTIAL PRESSURE TRANSMITTER
FEATURES/BENEFITS
• Versatile, high accuracy device for liquid or gas supports
designs requiring more precise measurements in support of
application
•Removableterminalblockreduceswiringdifcultiessaving
installation time
• Optional LCD indicator provides local status to identify
operational conditions
• Optional 3-way valve manifold allows the transmitter to be
zeroed without removing it from service and protects the
transmitter from damage due to water hammer
• Remote sensor option reduces installation labor and material
APPLICATIONS
• Flow elements
• Coils
• Heat exchangers
• Chiller
• Filters
• Pumps
DESCRIPTION
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.
629C-RS
Option
Conduit housing
with remote
sensor available
in 10´ or 20´
shielded or
armored cable
SPECIFICATIONS
Service Compatible gases and liquids.
Wetted Materials
Accuracy ±0.5% FS (includes linearity, hysteresis & repeatability).
Thermal Effect Avg 0.04%/°F (0.072%/°C) (includes zero and span).
Display Optional 4-1/2 digit LCD eld attachable display.
Stability ±1% FS/yr.
Temperature Limits 0 to 200°F (-18 to 93°C).
Pressure Limits See chart on catalog page.
Power Requirements 10 to 35 VDC (2-wire); 13 to 35 VDC, or isolated 16 to 33 VAC (3-wire).
Output Signal 4 to 20 mA (2-wire); Field selectable: 0 to 5, 1 to 5, 0 to 10, or 2 to 10 VDC (3-wire).
Zero and Span Adjustments Push buttons inside conduit enclosure.
Loop Resistance Current output: 0 to 1250 Ω max; Voltage output: Load resistance 5 kΩ min.
Current Consumption 28 mA max.
Electrical Connections Removable terminal block; 1/2˝ female NPT conduit.
Process Connections 1/4˝ female or male NPT.
Mounting Orientation Not position sensitive.
Weight 10.1 oz (286 g).
Agency Approvals CE.
Without valve: 316, 316L SS. With valve option: Buna-N, silicone grease, PTFE, brass 360, copper, and reinforced
copolymer.
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DWYER INSTRUMENTS, INC.
T: 219-879-8000 | F: 219-872-9057 | info@dwyermail.com
800-872-9141
®
OPTIONAL
OPTIONAL 1/4 NPT MALE FITTING
1
VIN
+
1
VIN
+
DIMENSIONS WIRING DIAGRAM
43/64
[17.15]
1-11/32
[34.29]
3-7/64
[78.83]
1-31/32
[50.16]
LCD
5-15/16 [150.88]
1/4 NPT FEMALE FITTING
7 [177.80]
1-27/64
[35.98]
HOW TO ORDER
Use the bold characters from the chart below to construct a product code.
-05 -CH -NIST-P3 -E2 -S1629C
SERIES
629C - Wet/Wet Differential Pressure Transmitter
RANGE
-01 - 0 to 5 psid
-02 - 0 to 10 psid
-03 - 0 to 25 psid
-04 - 0 to 50 psid
-05 - 0 to 100 psid
-06 - 0 to 150 psid
-07 - 0 to 200 psid
-08 - 0 to 300 psid
-09 - 0 to 500 psid
-11 - 0 to 0.5 bar differential
-12 - 0 to 1 bar differential
-13 - 0 to 2 bar differential
-14 - 0 to 4 bar differential
-15 - 0 to 6 bar differential
-16 - 0 to 10 bar differential
-17 - 0 to 15 bar differential
-18 - 0 to 20 bar differential
-19 - 0 to 30 bar differential
HOUSING
-CH - Conduit housing, NEMA 4X (IP66)
-R1 - Conduit housing, NEMA 4X (IP66) with Remote Sensor and 10´
shielded cable
-R2 - Conduit housing, NEMA 4X (IP66) with Remote Sensor and 20´
shielded cable
-R5 - Conduit housing, NEMA 4X (IP66) with Remote Sensor and 10´
armored cable
-R6 - Conduit housing, NEMA 4X (IP66) with Remote Sensor and 20´
armored cable
ACCESSORIES
PRESSURE
TRANSMITTER
PRESSURE
TRANSMITTER
2
3
4
2
3
4
COM
+-
SHIELD
Current Output Connection
COM
VO
SHIELD
+-
RECEIVER
Voltage Output Connection
OPTIONS
-3V - 3-way valve
-AT - Aluminum tag
-AT - Factory calibration certicate
-LCD - LCD indication
-NIST - NIST traceable calibration
certicate
SIGNAL OUTPUT
-S1 - 4 to 20 mA
-S3 - Field selectable 0-5, 1-5, 0-10,
2-10 VDC
ELECTRICAL CONNECTIONS
-E1 - Cable gland with 3´ of prewired cable
-E2 - Cable gland with 6´ of prewired cable
-E3 - Cable gland with 9´of prewired cable
-E5 - 1/2˝ female NPT conduit
-E9 - M-12 4-pin connector
PROCESS CONNECTIONS
-P1 - 1/4˝ male NPT
-P2 - 1/4˝ female NPT
-P3 - 1/4˝ male BSPT
-P4 - 1/4˝ female BSPT
RECEIVER
POWER
SUPPLY
10-35 VDC
POWER
SUPPLY
13-35 VDC
OR 16-33 VAC
Model Description
A-62X-LCD
A-629C-3V
A-155
A-228
BBV-1B
Important Notice: Dwyer Instruments, Inc. reserves the right to make changes to or discontinue any product or service identied in this publication without notice. Dwyer advises its customers to obtain the
latest version of the relevant information to verify, before placing any orders, that the information being relied upon is current.
dwyer-inst.com
Field-upgradeable LCD
3-way brass manifold valve
Cable gland with 1/2˝ NPT male
12˝ SS ex hose
Mini SS 3-valve black manifold
DWYER INSTRUMENTS, INC.
T: 219-879-8000 | F: 219-872-9057 | info@dwyermail.com
800-872-9141
DS-629C Rev. 2 | 7/18
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