PRESSURE

DIFFERENTIAL PRESSURE SWITCHES
DPI Series
Electronic differential pressure switch(es) and transmitter
The DPI series electronic pressure measuring devices are engineered
for building automation in the HVAC/R industry. The most technologically advanced and versatile electronic differential pressure switches
on the market, combining up to two relay outputs and 0–10 V output
options.
The DPI includes the following field selectable features:
• Configurable switching point:
t o Open on rise or fall in pressure
t o Hysteresis of set-point
• Measurement units (Pa, kPa, mmWC, inWC, mbar)
• Measurement ranges (4 ranges per model)
• Output signal (0−10 V, NO/NC)
• Span and zero point calibration
DPI options include:
• Display
• Up to 2 relays, which can be configured separately
• Autozero calibration
The versatility of the DPI series electronic pressure measuring devices
ensure the right product for the current application specifications is
always available.

SIMILAR PRODUCTS

APPLICATIONS

• tPS series mechanical differential pressure switches
• tDPT-R8 series 8-range differential pressure transmitters
• tDPT-MOD series differential pressure transmitters with
Modbus configuration

DPI series devices are commonly used in HVAC/R systems for:
• tfan, blower and filter monitoring
• tstaircase pressure monitoring and alarm
• tpressure monitoring in cleanrooms
• tboiler pressure monitoring and alarm

MODEL SUMMARY
DPI

DPI±500

DPI2500

Measurement ranges (Pa)
(field selectable via jumper)

±100 Pa / ±250 / ±300 / ±500 Pa

100 / 250 / 1000 / 2500 Pa

Description

Model t

Product code

Model t

Product code

Electronic differential pressure switch & transmitter
-with display and one relay

DPI±500-1R-Dt

-with display, one relay and autozero
-with display and two relays
-with display, autozero and two relays

Copyright HK Instruments 2014

118.001.001

DPI2500-1R-Dt

DPI±500-1R-AZ-Dt

118.001.002

DPI2500-1R-AZ-Dt

118.002.002

DPI±500-2R-Dt

118.001.003

DPI2500-2R-Dt

118.002.003

DPI±500-2R-AZ-D t

118.001.004

DPI2500-2R-AZ-D t

118.002.004

www.hkinstruments.fi

118.002.001

Datasheet Version 1.0 2014