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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