AZ - IR Hygrometer 8857

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AZ - IR Hygrometer 8857 Enviromental & Weather Testing

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AZ - IR Hygrometer
Brand: AZ Instruments
Model: 8857
* The most popular IR + Psychrometer two in one meter
* Convenient to carry and store especially for the HVAC business
* Digital sling psychrometer calculates Wet Bulb, Dew Point in seconds and T1-T2 (Surface to Dew Point).
* Relative humidity measure range from 0-100% by rotronic sensor
* Laser infrared thermometer measure Temperature range from -40~500
* Quick and accurate IR response time: 500 ms
* IR emissivity value adjustable 0.3~1.0
* Built-in laser beam (670nm) for targeting
* Backlight function
* Environment thermometer measure from -20 to 50
* Protect sensor by special designed gear damper device
The 8857 AZ Thermo Humidity Meter can measure the air temperature, surface temperature, humidity, wet bulb temperature, dew point temperature and temperature differential measurement. Its back light function could let user to operate the meter in the dark area easily.

The sensor of 8857 AZ Dew Point Temperature Meter is specially protected by gear damper device. While the sensor is retracted, the meter will not work. The sensor designed auto detects the air temperature and humidity if it is not retracted.

The 8857 AZ Psychrometer is a micro processor-based design. A must device for HVAC engineer use. No need to whirl the meter or refer to the chart. Easy to get wet bulb, dew point and surface temperature quickly. It also could be used as the best monitoring tool for the warehouse, work space, laboratories, basement, wine cellar or other controlled environment.

The 8857 AZ hygrometer IR Meter was being designed and manufactured by AZ Instrument, a well experienced manufacturer for Environmental Measuring Instrument.


IR Temperature Range -40~500
IR Temperature Resolution 0.1, 0.1H
IR Temperature Accuracy (which is greater) ±2% or 2 at -20~200, others is ±3% or 3
Temperature Range -20~50
Temperature Resolution 0.1, 0.1H
Temperature Accuracy ±0.6
Humidity Range 0.1%~99.9% RH
Humidity Resolution 0.1% RH
Humidity Accuracy ±3%RH (at 25. 10~90%RH, others ±5%RH)
Dew Pint Temperature Range -68~49.9
Wet Bulb Temperature Range -21.6~49.9
IR Repeatability ±1
Emissivity 0.3~1.0 adjustable
D:S Ratio 8:1
LCD Size 44 (L)*26 (W) mm
Operating Temperature 0~50
Operating RH% Humidity 90%
Storage Temperature -20~50
Storage RH% Humidity 90%
Meter Size 70 (L)*50 (W)*175 (T)mm
Weight ~140g
Battery AAA * 4 PCS
Standard Package Meter, Batteries, Manual, Carry Case
Optional Accessory USB Cable & Software Kit

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