Series 629C Wet/Wet Differential Pressure Transmitter

0.5% Accuracy, NEMA 4X (IP66) Enclosure

The Series 629C Wet/Wet Differential Pressure Transmitter monitors differential pressure of air and compatible gases and liquids with 0.5% accuracy. The design employs dual pressure sensors converting pressure changes into a standard 4 to 20 mA output signal or field selectable voltage. Small internal volume and minimal moving parts result in exceptional response and reliability. The terminal block, as well as a zero adjustment button, are easily accessed under the top cover.

The Series 629C, with the optional factory installed remote sensors, are connected to the unit, either via armored or shielded cable and available in 10 and 20' lengths. Installation is much simpler, reducing labor and material cost versus traditional copper piping installations and no need for valve manifolds.

The 629C family has a robust NEMA 4X (IP66) construction, which is also available with an integral LCD for localized data monitoring.

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Product Applications

  • Flow elements
  • Heat exchangers
  • Filters
  • Coils
  • Chiller
  • Pumps

Models & Ordering

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Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

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Model Description Usually Ships* Price Order
629C-02-R2-P1-E5-S1
Ships: Same Day
Price: $465.00
Wet/wet differential pressure transmitter, range 10 psid, working pressure 20 psi, over pressure 100 psi with remote sensors and 20' shielded cable. Same Day* $465.00 Order
629C-02-R6-P1-E5-S1
Ships: Same Day
Price: $675.00
Wet/wet differential pressure transmitter, range 10 psid, working pressure 20 psi, over pressure 100 psi with remote sensors and 20' armored cable. Same Day* $675.00 Order
629C-03-R1-P1-E5-S3
Ships: Same Day
Price: $385.00
Wet/wet differential pressure transmitter, range 25 psid, working pressure 50 psi, over pressure 250 psi with remote sensors and 10' shielded cable. Same Day* $385.00 Order
629C-03-R5-P1-E5-S3
Ships: Same Day
Price: $560.00
Wet/wet differential pressure transmitter, range 25 psid, working pressure 50 psi, over pressure 250 psi with remote sensors and 10' armored cable. Same Day* $560.00 Order
629C-05-R1-P1-E5-S3
Ships: Same Day
Price: $385.00
Wet/wet differential pressure transmitter, range 100 psid, working pressure 200 psi, over pressure 500 psi with remote sensors and 10' shielded cable. Same Day* $385.00 Order
629C-05-R5-P1-E5-S3
Ships: Same Day
Price: $560.00
Wet/wet differential pressure transmitter, range 100 psid, working pressure 200 psi, over pressure 500 psi with remote sensors and 10' armored cable. Same Day* $560.00 Order

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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 chart on catalog page.
Thermal Effect:
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 field attachable display.
Enclosure Rating:
Designed to meet NEMA 4X (IP66).
Mounting Orientation:
Not position sensitive.
Weight:
629C-XX-CH: 10.1 oz (286 g); 629C-XX-R2-P1-E5-XX: 2.3 lbs (1.04 kg); 629C-XX-R6-P1-E5-XX: 4.55 lbs (2.06 kg).
Agency Approvals:
CE.

Features

  • Powered by either DC or AC - take advantage of most readily available power source reducing installation costs
  • Optional LCD does not need a separate power supply - lowers installed cost
  • Selectable voltage range - provides flexible choice for changing design or inputs for process/HVAC controllers being used to monitor and control
  • Push button zero (versus trim pot) - more simple zeroing provides easy install and calibration reducing installation time and possibility of operator error
  • Optional LCD indicator provides local status to identify operational condition
  • Remote sensor option reduces installation labor and material

Options

  • -3V 3-Way Valve Package for Chillers
  • -LCD 4.5 Digit LCD Display
  • -NIST NIST Traceable Certificate
  • Remote Sensor Available in 10 & 20 ft Shielded (R1, R2), or Armored Cable (R5, R6)

Accessories

Model Number Description Usually Ships* Price Order
Cable gland with 1/2 A-155 Cable gland with 1/2" male NPT fitting. Same Day $16.00 Order
Stainless steel flex hose, 12 A-228 Stainless steel flex hose, 12" (30.48 cm) long, 1/8" male NPT connections. 2-3 Weeks $36.00 Order
Mini 3-valve block manifold BBV-1B Mini 3-valve block manifold Same Day $131.00 Order
A-62X-LCD Field upgradeable LCD display. Same Day $133.00 Order
A-629C-3V 3-Way manifold & bracket for pressure transmitters. 1-2 Weeks $128.00 Order

Videos

Model Chart

EXAMPLE 629C 06 CH P1 E1 S1 AT Series 629C-06-CH-P1-E1-S1-AT Wet/Wet Differential Pressure Transmitter, range 0-150 psid, conduit housing, NEMA 4X (IP66), 1/4" male NPT, 3 ft. cable, 4-20 mA output, with aluminum tag.
SERIES 629C             Wet/Wet Differential Pressure Transmitter
RANGE   01
02
03
04
05
06
07
08
09
11
12
13
14
15
16
17
18
19
          0-5 psid
0-10 psid
0-25 psid
0-50 psid
0-100 psid
0-150 psid
0-200 psid
0-300 psid
0-500 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
HOUSING     CH
R1
R2
R5
R6
        Conduit housing, NEMA 4X (IP66)
Conduit hsg, NEMA 4X (IP66) with remote sensor and 10' shielded cable
Conduit hsg, NEMA 4X (IP66) with remote sensor and 20' shielded cable
Conduit hsg, NEMA 4X (IP66) with remote sensor and 10' armored cable
Conduit hsg, NEMA 4X (IP66) with remote sensor and 20' armored cable
PROCESS CONNECTION       P1
P2
P3
P4
      1/4" male NPT
1/4" female NPT
1/4" male BSPT
1/4" female BSPT
ELECTRICAL
CONNECTION
        E1
E2
E3
E5
E9
    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
SIGNAL
OUTPUT
          S1
S3
  4-20 mA
Field selectable 0-5, 1-5, 0-10, 2-10 VDC
OPTIONS             3V
AT
FC
LED
NIST
PRESET
3-Way Valve
Aluminum Tag
Field Calibration Certificate
LED Indication
NIST Certification
Preset Transmitter

Product Literature

Manuals

Catalog Pages

Product Data Sheet

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Approvals

Drawings

Questions

Question
We have a defective 629-04-CH-P2-E5-S1-3V DP sensor. The technician only wants to replace "just the sensor", not the entire manifold assembly. Can you give me the part number for this sensor?
Answer
Here is the part number you could use to replace just the sensor: 629-04-CH-P2-E5-S1. The “-3V” at the end of the model number is the valve manifold option. For any unit just order the model number before the “-3V” as a replacement pressure transmitter.
Question
I am using a differential pressure transmitter model 629-02-CH-P2-E5-S1-LED to measure differential pressure of water. How do I convert the 4-20 mA signal to the differential pressure reading?
Answer
The 4-20 mA output from the 629 is linear over the range, which in this case is 0-10 PSID. Therefore, a 4 mA output will coincide with a differential pressure of 0 PSID, and a 20 mA output will coincide with a differential pressure of 10 PSID with a linear relationship between those two points. With that information, you should simply be able to scale your receiver accordingly.

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