Intech Weather Station WS3-WD-THP-TB-CL (Wind Speed, Wind Direction, Temperature, Humidity and Barometric Pressure sensors housed in a Solar Radiation Shield mounted on T-bar)
Weather Stations $0.00 Excl. GST
Back to products
Calibration system for LPN-H series Humidity sensors
LPN-H-CAL
Hot Best Seller
Intech Humidity and Temperature Transmitter Wall mount LPN-H-W
Humidity and Temperature Transmitter Duct Mount LPN-H-D
Click to enlarge
Intech Humidity and Temperature Transmitter Wall mount LPN-H-W
Humidity and Temperature Transmitter Duct Mount LPN-H-D

LPN-H – Relative Humidity & Temperature Transmitter

Brand:

$458.00 Excl. GST

Mounting Type*

0~100% RH, 0~100°C Transmitter

Optional Flange

Total: $458.00

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

Product Details

Description

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.

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

Technical Specs

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.

Documents