HART signal filter


HART signal filter

  Price:  $339.00  


HRT-370 is a HART signal filter specially designed to solve the issue that analog signal gets interfered while additional HART signal adding to communication process. When connecting HRT-370 to a HART instrument, it splits the input HART signal to two output channels, one keeps the original HART signal and another filter the HART signal out to output pure analog signal. Therefore, users can make both HART and analog current data collection and processing easier and more precise by applying HRT-370.

  • 1 analog current output (HART signal filter) channel
  • 1 by pass HART signal channel
  • Support HART Burst mode
  • Support point-to-point HART mode
  • Allow two HART masters
  • Support Loop Power function (module provides +30V)
  • Provide PWR/ HART/ AO indication LED
  • 4KV ESD Protection
  • 250? load resistor
  • Support din-rail installation

Reference & Support


Analog Input with HART Interface

HART Connector

One 4-pin screwed terminal block (LP+, H+, H-)

HART Device

2-wired or 4-wired HART devices (Point to Point)

4KV ESD Protection


Isolation Voltage

2500 VDC

Loop Power

Yes (module provides +30V output)

Auxiliary Supply

24V @ 20mA

Input Impedance

250Ω±5% (2W)

Analog Output Interface

Analog Output Connector

One 4-pin screwed terminal block (IOUT+, IOUT-)

Current Output Capacity

External +30V @ 800Ω (Sink)

Zero/Span Drift (25℃)

4~20mA ± 0.1% FSR

Zero/Span Drift (-30/+80℃)

4~20mA ± 0.5% FSR

Response Time

40ms @ 250 Ω

Isolation Voltage



Power supply

Unregulated +10 ~ +30 VDC


Power reverse polarity protection, Over-voltage brown-out protection

Power Consumption

Maximum: (20mA) => 0.05mA @ 30VDC, 1.5W




Dimensions (W x L x H)

25 mm x 116 mm x 120 mm

LED Display

PWR: Module power status

HART: HART connection status

AO: AO connection status


Operating Temp.

-25 ℃ ~ +75 ℃

Storage Temp.

-30 ℃ ~ +80 ℃


5% ~ 95% RH, non-condensing

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