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 and with a remote sensor option.
NIST CALIBRATION available in Product Configurator.
- Flow elements
- Heat exchangers
Models & Ordering
- 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.
- ±0.5% FS (includes linearity, hysteresis & repeatability)
- ±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.
- Optional 4-1/2 digit LCD field attachable display.
- Enclosure Rating:
- Designed to meet NEMA 4X (-RS maintains NEMA 4X on sensors and housing).
- Mounting Orientation:
- Not position sensitive.
- 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:
- 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
- -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)
|Model Number||Description||Usually Ships*||Price||Order|
|A-155||Cable gland with 1/2" male NPT fitting.||1-2 Weeks||$17.00||Order|
|A-228||Stainless steel flex hose, 12" (30.48 cm) long, 1/8" male NPT connections.||2-3 Weeks||$38.00||Order|
|BBV-1B||Mini 3-valve block manifold||Next Day||$138.00||Order|
|A-62X-LCD||Field upgradeable LCD display.||Next Day||$135.00||Order|
|A-629C-3V||3-Way manifold & bracket for pressure transmitters.||1-2 Weeks||$133.00||Order|
|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|
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 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
|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
Field selectable 0-5, 1-5, 0-10, 2-10 VDC
|3-Way Valve (only available with -P2 Process Connection)
Field Calibration Certificate
- 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?
- 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.
- 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?
- 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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