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Duct Humidity and Temperature transmitter instructions use the 304 stainless steel probe. And it uses the standard PT1000 (Switzerland) as the temperature sensor and a capacitive type humidity sensor (Switzerland)、IC processor and new type microprocessor temperature compensation operation amplifier, convert the measuring temperature and the humidity as the corresponding standard signals；
The device uses the PC shell that is all closure and prevents the water. The equipment has a small volume, a light weight, high accuracy, High linearity, fast response time, long term stability. It is the special device of temperature measurement that applys the HVAC duct systems.

Specifications:
RH Transmitter Type：high precision hygristor of Switzerland
Temperature Transmitter Type：PT-1000 Ω(Rate A)
Temperature Sensor Type：PT-1000、PT-100、NTC10K、NTC20K
Measurement Range：RH：0～100%（RH）
Temperature：0～50℃、0～100℃、-50～50℃、-20～80℃
Power Supply：24Vdc/ac ± 20%
Signal Output：Current：4~20mA Load Resistance < 500Ω
Voltage：0~5V/0~10V Load Resistance > 10KΩ
Accuracy：RH：±3%、±5% (20~80%RH) Temperature：±0.5℃
Length of the Probe：275mm
Connecting Terminal：Plug Port：3.81mm，5Pin PBT；Screw Steel：M2；
Torsional Moment：0.2Nm；Contact Resistance：20mΩ
Wiring Connections：18~22AWG（1.5mm2），stripping length：6~7mm
Water Joint：PG7(Black)
Storage Conditions：-20~60℃(< 90%RH)，non-condensing
Surge Immunity： Rate III
Enclosure Options：PC Polycarbonate, Black Plastic
Water Resistance：IP65
Weight：195±5 g
Pro-environment：RoHS