Libratherm offers an Economical, rugged, reliable, and fairly accurate Humidity sensor (Pt-100 class A element + RH sensor element from Honeywell) model HS-440 for measuring Humidity in the atmosphere/environment / AHU or DHU Chamber. This Hygro Thermometer Probe HS-440 is easy to mount and comes with 2 meters PVC color-coded multicore cable. The sensor is housed in a rugged ABS enclosure. For Indication and control purposes, the external digital indicator/controller can be used with a calibrated scale as given in the Technical Specifications table.
Accurate Capacitive sensor for RH
Accurate Pt-100 sensor for humidity
Operates on low voltage / low current
Imported Honeywell sensor
Direct voltage output proportional to RH
ABS plastic / SS enclosure for industrial use
Standard 2 meter cable
Green House, Ware House
Server Room, Data Centre, Textile
Pharma Labs, Stability Chamber
Hot Air Dyer
(T + RH) Sensor (OEM version)
HS – 440 (Only For Humidity)
For Temp.: Class A RTD Pt-100 element (Hayashi Denko – Japan)
For %Rh: Honeywell make Humidity sensor HIH-4000
For Temperature Pt-100: 84.27 Ohms to 123.24 Ohms (-40 to 60 °C) (Alpha = 0.00385)
For %Rh: 0.0Volt @ 0% Rh and 3.33Vdc @ 100%Rh or
0 to 1Vdc Linear as per OEM requirement.
8 to 12VDC (max.) Low current consumption: Max.0.5mA
0 to 100% Rh @ 0 to 50 °C
0 to 90% @ 0 to 60 °C
0 to 50% @ -40 to 85 °C
± 0.3 °C
+/- 3% @ 25 °C / 50 %Rh
Wall / Surface Mounted
60 x 35 x 15mm
Cable / Enclosure
2 to 5 meter PVC/PVC insulated multi-core cable with pin lugs / ABS plastic.
Precautions for use
Avoid condensation and drench. Avoid exposure to Saline, Inorganic and Organic Gas.