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LPN-H – Relative Humidity & Temperature Transmitter

Available in both Wall and Duct mount models to suit your application.

Intech Humidity and Temperature Transmitter Wall mount LPN-H-W
Humidity and Temperature Transmitter Duct Mount LPN-H-D

LPN-H Features

  • Sensirion SHT25 Digital Humidity Sensor
  • Long Term Stability
  • Fast response: 4 seconds from 0 to 100%RH under ideal conditions
  • Dual 4~20mA Outputs
  • %RH Temperature Compensated Linear Output
  • RTD Pt100 Sensor
  • Temperature Output 0~100ºC (0~200ºF option on request)
  • Temperature Output Linearised
  • Very Compact Design
  • High Accuracy
  • Easy to Install
  • Reverse Polarity Protection
  • Wide Power Supply Range
  • Rugged and reliable
Brand: INTECH
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The LPN-H is a complete relative humidity and temperature sensing module, with two loop powered 4~20mA output signals, representing 0~100%RH and 0~100ºC.

Two versions are available:

  • Wall mount (LPN-H-W).
  • Duct mount (LPN-H-D).

Both versions come complete in an industry standard aluminium connection head.

The digital relative humidity sensor and temperature compensating sensor protrude from the head inside a protective cap. This cap allows air to circulate to the sensors.

Reliability:

The wide range of the humidity and temperature sensors offer long term reliability over a broad range of applications. The sensors resist contaminating vapours such as organic solvents, chlorine, and ammonia.

TYPELPN-H
LPN-H Relative Humidity Transmitter Specifications.
Accurate to±2% FSO Typical. 10~80%RH Non Condensing.
 -ImportantFor continuous measurements of ≥90%RH, refer to operating range on next page.
Ambient Temperature Drift<±0.05%/C FSO Typical.
Humidity Sensor-Hysteresis±0.8% of Span Typical.
 -Linearity±0.5%RH Typical.
 -Repeatability±0.5%RH Typical.
 -Long Term Drift±1%RH Typical at 50%RH in 5 years.
 -Output0~100%RH for 4~20mA.
LPN-H Temperature Transmitter Specifications.
Accurate to<±0.1% FSO Typical + sensor Error.
Linearity and Repeatability<±0.1% FSO Typical + sensor Error.
Ambient Temperature Drift <±0.02%/C FSO Typical + sensor Drift.
RTD Sensor Pt100 RTD, Class A Din 43760, IEC60751.
Sensor Current 1.0mA.
Sensor Output0~100°C for 4~20mA factory calibrated. Output will stay at 4mA or 20mA if
temperature low or high. 3mA output indicates faulty sensor. 
LPN-H Common Specifications.
Output 2 wire 4~20mA (Loop Powered).
Power Supply9~33Vdc.
Supply Voltage Sensitivity<±0.01%/V FSO.
Maximum Output CurrentLimited to <32mA.
Max output Load Resistance 800Ω @ 24Vdc. (50Ω/V Above 8Vdc).
Isolation Test VoltageBetween %RH and Temperature; 50Vdc for 1 min.
Operating Temperature-30~70°C.
Storage Temperature-30~85°C.
Operating Humidity100%RH. Non-condensing.

Note 1: The inside of the head with the electronics board must not get wet.
Note 2: Good airflow and good air mixing must be maintained over the sensor to minimise local temperature fluctuations, and to ensure accurate measurements.

Product Range

Product Range:
CodeSpecificationsPriceQuantity
LPN-H-W

Wall Mount, 0~100%RH, 0~100°C Transmitter.

 $438.00
LPN-H-D

220mm Duct Mount, 0~100%RH, 0~100°C Transmitter

 $488.00
LPN-H-FLANGE

100mm Flange for LPN-H-D.

 $192.00
All prices are in NZ$, and GST exclusive and are subject to change without notice.

Intech is our own brand of products, for all aftersales and technically support please contact us.

Not sure what you need? Ask us anything!

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Intech Christchurch

59 Mandeville Street
Riccarton, Christchurch 8011

Phone: (03) 343 0646

Email: sales@intech.co.nz

Intech Auckland

70 Central Park Drive
Henderson, Auckland 0610

Phone: (09) 827 1930

Email: aucksales@intech.co.nz

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