The HT-800 Thermo Hygrometer has been designed with a highly reliable polymer film humidity sensor.

The HT-800 Thermo Hygrometer is equipped with unique features such as a high stability, good repeatability and fast response order to keep high accuracy of measurement at bad ambient. Platinum resistance element (PT100W) is used for temperature measuring and compensation.

The HT-800 Thermo Hygrometer has its own dual display which continuously indicates %RH and Temperature simultaneously in ºC or ºF, data hold, power exhausted signal and probe connection can be shown on the display, especially dual analog output can be accessed for controller, recorder or P/C system expansion.

Thermo Hygrometer Features:

• Dual analog output of temperature and humidity for system expansion
• Unique LCD dual display which continuously indicates temperature and humidity simultaneously
• Compact interchangeable combined temperature/humidity probe
• High stability, non-calibration before using
• ºC/ºF switchable
• High accuracy, Temperature: +/-0.2ºC Humidity: +/-2.5%RH
• One touch "Data-Hold" function
• High precision "Macromolecule Humidity Sensor" with quick response and no hysterisis
• Water resistant design, easy operation

Thermo Hygrometer Specifications:

Measurement Range	Humidity 5 to 98.0% RH Temperature: -15.0 to +60.0ºC (5.0 to +150.0ºF)
Accuracy (TAMB - 25ºC)	Humidity: +/-2.5% RH Temperature: +/-0.2ºC,+/-0.4ºF
Resolution	Humidity: 0.1% RH Temperature: 0.1ºC, 0.1ºF
Sensors	Combined humidity/temperature probe Humidity: High precision Macromolecule Humidity Sensor Temperature: PT100W platinum thermo-resistance
Signal Output	Humidity: DC 0~1V, 10mV/%RH, impedance 600W Temperature: DC 0~1V, 10mV/ºC, 10mV/ºF, impedance 600W
Display	Twin digital LCD display for temperature and humidity reading in the meantime without switching
Over Range Alarm	Automatic, when humidity value out of the measurement range
Measuring Rate	2.5 per second
Data Memory	Last value memory by "Hold" switch
Power Supply	One 9V 006P or IEC 6F22 battery
Battery Life	Approx. 120 hours (continuous operation)
Low Power Alarm	Automatic - Battery Symbol lights up on alarm
Storage Ambient Range (Meter)	-20 to 60ºC (-5 to 150ºF) Below 85% RH
Dimensions	Meter: 15 x 7.8 x 2.7 cm (5.9 x 3.1 x 1.1 inch)
Weight	280gms, (9.8 ozs) including probe

* All specifications are subject to change without prior notice.