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The AZ 8857 IR Hygrometer is a handheld instrument that combines an infrared thermometer and a psychrometer in one unit, measuring air temperature, surface temperature, relative humidity, wet bulb temperature, dew point and the surface-to-dew-point differential. Those readings decide whether climatic conditions are right for the work in hand, since surface temperature relative to the dew point is what tells you when condensation will form, and HVAC and climate-controlled spaces depend on knowing humidity and temperature together.
A built-in 670nm targeting laser aims the infrared spot of the AZ 8857 IR Hygrometer, which reads surface temperatures from -40 to 500 degrees C with a 500 ms response, adjustable emissivity from 0.3 to 1.0 and an 8:1 distance-to-spot ratio. A Rotronic sensor measures relative humidity across 0.1 to 99.9% RH to plus or minus 3% RH, and the AZ 8857 IR Hygrometer calculates wet bulb, dew point and T1-T2 in seconds. A gear-damper mechanism retracts and protects the humidity sensor, holding off readings while it is stowed to prolong sensor life and keep readings accurate.
The bright back-lit LCD of the AZ 8857 IR Hygrometer allows operation in the dark, suiting climatic condition testing in warehouses, offices, laboratories, basements, wine cellars and HVAC work. The unit weighs about 140g and runs on 4 AAA batteries. Supplied by BAMR, South Africa's authorised distributor.
AZ 8857 IR Hygrometer
The AZ 8857 IR Hygrometer has been designed around the state-of-the-art micro-processor that makes it instrumental on the worksite. The display is easy to interpret and allows for measurements to be taken at a glance.
- Combines the functions of Infrared Thermometer and Psychrometer into a compact unit.
- Lightweight body is especially suited for HVAC Applications
- Calculate Wet Bulb, Dew point, and T1-T2 (Surface to Dew Point) in seconds
- Rotronic Sensor measures Relative Humidity from 0-100%
- Measure temperatures from -40°C to 500°C with the Infrared Laser
- Infrared response time is 500 ms
- IR emissivity value adjustable 0.3 - 1.0
- Built in targeting laser beam (670nm)
- Bright back-lit LCD display
- Unique sensor protection mechanism
Specifications
- Model
- AZ 8857 IR Hygrometer
- IR Temperature Range
- -40-500℃
- IR Temperature Resolution
- 0.1℃, 0.1℉
- 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℃, 0.1℉
- 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 Point 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
- 08:01
- LCD Size
- 44 (L) x 26 (W) mm
- Operating Temperature
- 0 - 50℃
- Operating RH%
- Humidity <90%
- Storage Temperature
- -20 - 50℃
- Storage RH%
- Humidity <90%
- Dimensions
- 70 (L) x 50 (W) x 175 (T) mm
- Weight
- ±140g
- Battery
- 4 x AAA Batteries
Specifications
Specifications
- Model
- AZ 8857 IR Hygrometer
- IR Temperature Range
- -40-500℃
- IR Temperature Resolution
- 0.1℃, 0.1℉
- 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℃, 0.1℉
- 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 Point 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
- 08:01
- LCD Size
- 44 (L) x 26 (W) mm
- Operating Temperature
- 0 - 50℃
- Operating RH%
- Humidity <90%
- Storage Temperature
- -20 - 50℃
- Storage RH%
- Humidity <90%
- Dimensions
- 70 (L) x 50 (W) x 175 (T) mm
- Weight
- ±140g
- Battery
- 4 x AAA Batteries
Downloads
Frequently asked questions
What temperature ranges does the AZ 8857 measure?
The AZ 8857 measures ambient temperature from -20 to 50 degrees Celsius via an internal sensor and surface temperature from -40 to 500 degrees Celsius via infrared. IR resolution is 0.1 degrees Celsius.
What accuracy should I expect from IR temperature measurements?
Between -20 and 200 degrees Celsius, IR accuracy is plus or minus 2% or 2 degrees Celsius, whichever is greater. Outside that range, accuracy is plus or minus 3% or 3 degrees Celsius with repeatability of plus or minus 1 degree Celsius.
What humidity range and accuracy does the AZ 8857 provide?
Humidity measurement ranges from 0.1% to 99.9% RH with plus or minus 3% RH accuracy at 25 degrees Celsius in the 10-90% range. Outside this band, accuracy is plus or minus 5% RH.
Does the device calculate dew point and wet bulb temperature?
Yes. The microprocessor calculates dew point from -68 to 49.9 degrees Celsius and wet bulb temperature from -21.6 to 49.9 degrees Celsius.
Is the AZ 8857 portable for site inspection?
The device weighs 140 grams, measures 70 by 50 by 175 millimetres, and runs on four AAA batteries. The display is easy to interpret and allows for measurements to be taken at a glance.
What are the operating and storage conditions?
Operating temperature is 0 to 50 degrees Celsius at humidity below 90%. Storage temperature is -20 to 50 degrees Celsius at humidity below 90%.
Quote on the AZ 8857 IR Hygrometer by close of business.
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Request a quote
Tell us about your application and we will send a quote with lead time and accessories.