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Handheld Thermo-Hygrometer for Sensing Temp and Humidity

Handheld Hygrometer Humidity and Temperature Meter


Item# RH85

Please contact Technical Sales Team for assistance.
Handheld Hygrometer Humidity and Temperature Meter RH85 RH85

This product is no longer available. Please see RH650 RH650

  • Dual Display Temperature and Humidity
  • Portability and Simplicity One-Hand Operation
  • MAX, MIN Record Function
  • Wet Bulb/Dry Bulb/Dew Point/Temperature Calculated

RH85 Model Options

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*Highlighted options are not compatible. Please select a different combination.

Minimum Temperature Measurement
Maximum Temperature Measurement
Display Type
Supply Power

• Greenhouses
• Office Environment
• Environmental Studies
• Weather Monitoring
• Food Distribution
• Labs
• HVAC Installation and Maintenance
• Art Galleries/Museums
• Hospitals and Clinics
• Printing Industry
• Store Rooms
• Department Stores

Display: 31/2 digit LCD
Low Battery Indication: A symbol is displayed when the battery voltage drops below the operating level
Battery Life: 200 hours, typical use
Operating Ambient: 0 to 50°C (32 to 122°F), at <75% R.H.
Storage Ambient: -20 to 60°C (-4 to 140°F), 0 to 80% R.H. with battery removed from meter
Accuracy: Stated accuracy at 23°C ±5°C (73°F ±9°F), <75% R.H.
Dimensions: 167 H x 48 W x 24 mm D (6.57 x 1.89 x 0.95")
Weight: 87 g (3 oz) incl. batteries

Sensor: Thermistor
Range: -20 to 60°C (-4 to 140°F)
Resolution: 0.1°C (0.1°F)
±0.5°C 0 to 45°C;
±1°C -20 to 0°C, 45 to 60°C;
±1°F 32 to 113°F
±2°F -4 to 32°F, 113 to 140°F

Relative Humidity:
Sensor: Capacitive humidity sensor
Range: 0% to 100% R.H.
Resolution: 0.1% R.H.
±2.5% @ 25°C (77°F),
10% to 90% R.H.,
±5% @ 25°C (77°F),
0% to 10% R.H., 90% to 100% R.H.
Sensor Response Time for 90% of Total Range: 60 sec typical
Sensor Hysteresis (Excursion of 10% to 90% to 10% R.H.): ±1% R.H. typical

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Rated 4 out of 5 by from Good tolerance for the money We have used these in the past, they are not adjustable should they fail calibration. We have moved to the RH92, not as accurate but adjustable and less expensive. Know your application before purchasing.
Date published: 2016-04-01
Rated 5 out of 5 by from just what you expected Works perfectly. Note that the C, F, and APO options are switches, not buttons. So, you need to pry out the rubber strip to access them.
Date published: 2016-03-28
Rated 5 out of 5 by from Excellent & Accurate Temperature Gauge Excellent & accurate temperature Gauge that is easy to use. Bought two to ensure multiple areas are serviceable on site.
Date published: 2023-09-12
Rated 5 out of 5 by from Useful Instrument Assuming that the calibration of the instrument is correct -- the device provides exceptional value in monitoring RH. The directions provided could be made less ambiguous and more detailed. But, experimentation with the device can resolve the uncertainties.
Date published: 2017-09-02
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Does a Certificate of Calibration come with this unit?

Asked by: Brian G
Only a Certificate of Conformance is shipped with the meter.
Answered by: ApplicationsEngineerANB
Date published: 2021-09-29

Do you offer calibrations for this model?

Asked by: No Names please
Thank you for your inquiry. Unfortunately, we do not offer NIST-traceable calibration (CAL-2) for the RH85.
Answered by: Application Engineer CK
Date published: 2021-10-21
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