DPS629 Differential Pressure Transmitter   

For monitoring hydronic HVAC systems

Taco DPS sensors monitor the differential pressure in a hydronic HVAC system. As the system operates and sees an increase or decrease in demand, these sensors relay the system  pressure changes back to the building management system or VFD to modulate pump speed. Taco offers two models: the DPS629 Differential Pressure Transmitter, designed to meet NEMA 4X (IP66) construction, and the DPS3100D Smart Pressure Transmitter, with a 100:1 turn downrange that allows the smart transmitter to be configured to fit any application.


DPS629 Differential Pressure Transmitter
Accuracy: ±0.5% F.S. (includes linearity, hysteresis and repeatability).
Temperature Limits: 0 to 200°F (-18 to 93°C).
Compensated Temperature Limits: 0 to 175°F (-18 to 79°C).
Pressure Limits: 0 - 25 PSI with an over pressure limit of 250PSI.
Thermal Effect: 0.02%/°F (0.036%/°C) includes zero & span.
Power Requirements: 13-30 VDC (2-wire).
Output Signal: 4 to 20 mA. Optional 0-5, 0-10 VDC
DPS3100D Smart Pressure Transmitter
Accuracy: ±0.075% FS (@ 20°C)
Range ability: 100:1 turn down
Stability: ±0.125% FSO/year
Temperature Limits: Process— -40 to 248°F (-40 to 120°C) Ambient - without LCD -40 to 185°F (-40 to 85°C) - with LCD -22 to 176°F (-30 to 80°C)
Pressure Limits: Max pressure range— -14.5 to 2000 psi Burst pressure - 10000 psi
Thermal Effect: ±0.125% span/32°C
Power Requirements: 11.9 to 45 VDC
Output Signal: 4 to 20 mA

DPS629 Differential Pressure Transmitter

Catalogs (2)

TitleSheet NumberEffective Date
DPS3100D Smart Pressure Transmitter300-3609/05/12
DPS629 Differential Pressure Transmitter300-3508/14/12
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DPS629 Differential Pressure Transmitter

Instruction Sheets (2)

TitleSheet NumberEffective Date
Series 3100 Differential Pressure Transmitter302-066
Series 629 Differential Pressure Transmitter302-06508/01/2012
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DPS629 Differential Pressure Transmitter

Submittal Data Sheets (2)

TitleSheet NumberEffective Date
DPS3100D Differential Pressure Transmitter301-212111/15/2012
DPS629 Wet/Wet Differential Pressure Transmitter301-212005/27/2014
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