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.

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Product Applications

Flow elements
Heat exchangers
Filters
Coils
Chiller
Pumps

Models & Ordering

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629C NEW! with Remote Sensors
Standard Transmitter with 4-20 mA Output
Standard Transmitter with Selectable Voltage Output
Transmitter with 3-way Valve Manifold Assembly with 4-20 mA
Transmitter with 3-way Manifold Assembly with Selectable Voltage Output
Custom Built Products

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

COVID-19 Update: Due to high customer demand, lead time on some products may be up to two weeks. While this is a developing health situation, we are working continuously to take the necessary measures to ensure that the products you need are available with minimal interruption.

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Model	Description	Usually Ships*	Price	Order
629C-02-R2-P1-E5-S1 Ships: Less Than 1 Week Price: $489.00	Wet/wet differential pressure transmitter, range 10 psid, working pressure 20 psi, over pressure 100 psi with remote sensors and 20' shielded cable.	Less Than 1 Week*	$489.00	Order
629C-02-R6-P1-E5-S1 Ships: Less Than 1 Week Price: $705.00	Wet/wet differential pressure transmitter, range 10 psid, working pressure 20 psi, over pressure 100 psi with remote sensors and 20' armored cable.	Less Than 1 Week*	$705.00	Order
629C-03-R1-P1-E5-S3 Ships: Less Than 1 Week Price: $407.00	Wet/wet differential pressure transmitter, range 25 psid, working pressure 50 psi, over pressure 250 psi with remote sensors and 10' shielded cable.	Less Than 1 Week*	$407.00	Order
629C-03-R5-P1-E5-S3 Ships: Less Than 1 Week Price: $587.00	Wet/wet differential pressure transmitter, range 25 psid, working pressure 50 psi, over pressure 250 psi with remote sensors and 10' armored cable.	Less Than 1 Week*	$587.00	Order
629C-05-R1-P1-E5-S3 Ships: Less Than 1 Week Price: $407.00	Wet/wet differential pressure transmitter, range 100 psid, working pressure 200 psi, over pressure 500 psi with remote sensors and 10' shielded cable.	Less Than 1 Week*	$407.00	Order
629C-05-R5-P1-E5-S3 Ships: Less Than 1 Week Price: $587.00	Wet/wet differential pressure transmitter, range 100 psid, working pressure 200 psi, over pressure 500 psi with remote sensors and 10' armored cable.	Less Than 1 Week*	$587.00	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 (-RS maintains NEMA 4X on sensors and housing).
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
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

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 (only available with -P2 Process Connection) Aluminum Tag Field Calibration Certificate LED Indication NIST Certification Preset Transmitter

Product Literature

Manuals

Instruction Manual

Catalog Pages

Product Data Sheet

629C

SlideShare

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.

Related

Series 629C

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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