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Multi-Functional Environmental Meter

Multifunctional Environmental Meter
  • RoHS Icon


Item# RH87

Please contact Technical Sales Team for assistance.
Multifunctional Environmental Meter RH87 RH87
  • Discontinued, Replaced by THDP-10.

  • Measure Air Velocity (FPM), Air Volume (CFM) and Sound (dB)
  • Measure Temperature and Humidity (°F/°C) and Light (Lux)
  • Standard and Metric Units
  • Backlit LCD Display
  • Min/Max/Avg/DIF Modes
  • Data Hold
  • Auto-Ranging
  • Auto Power Off
  • Low Battery Indicator
  • One-Hand Operation

RH87 Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

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Maximum Temperature Measurement
Display Type
Supply Power

The RH87 is a digital multifunctional environmental meter which combines the function of sound level, luminometer, relative humidity meter, temperature meter and anemometer.

Power Requirements: 9V battery (included)
Low Battery Indication: Displayed
Display: 4½ digit backlit LCD
Response Time: 2 updates/second (display only)
Operating Temperature: -10 to 60°C (14 to 140°F)
Storage Temperature: -10 to 50°C (14 to 122°F)
Weight: 430 g (15.3 oz)
Dimensions: 280 L x 89 W x 50 mm H (11 x 3.5 x 2")
Range Resolution Accuracy Temperature: -10 to 60°C (14 to 140°F) 0.1°C (0.1°F) ±-1.5°C (±2.7°F)
Relative Humidity: 20 to 80% RH 0.1% RH ±3% RH @ 750oF < 20% RH and > 80% RH 0.1% RH ±5% RH @ 75oF
Sound Level: 30 dB to 130 dB 0.1 dB ±1.5 dB
Light Level: 0 to 2000 Lux 1 Lux ±5% of Rdg plus 10, 2001 Lux to 20,000 Lux 10 Lux ±5% of Rdg plus 10, 20,001 Lux to 50,000 Lux 100 Lux ±5% of Rdg plus 10
Air Flow: 1.6 to 65.7 ft/s 0.1 ft/s ±3% of Rdg plus 10, 0.5 to 20 m/s 0.1 m/s ±3% of Rdg plus 10, 0.9 to 38.9 knots 0.1 knots ±3% of Rdg plus 10, 1.8 to 72 km/h 0.1 km/h ±3% of Rdg plus 10
Air Volume: 0 to 999,900 CFM 0.1 to 100 CFM ±3% of Rdg plus 10 0 to 999,900 CMM 0.1 to 1000 CMM ±3% of Rdg plus 10
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Rated 4 out of 5 by from Air sample I bought this unit for this unit after comparing to 12 other meters. It measures twice a second, at 2.5% accurate with a cost of 20% of other machines at 2% accuracy. Indicates 5 different samples including RH, temp, noise, light, and air flow at the press of a button. Only reason for not giving a perfect 5 stars is I have only had it 3 weeks.
Date published: 2016-09-01
Rated 4 out of 5 by from Great all-around meter I bought this one month ago both for light consulting use and teaching 1st year engineering students. Luminance is a nice touch. Very happy so far.
Date published: 2019-02-17
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NIST Certified? Comes with Certificate of calibration (COC)? Where to send to for annual certification/ or calibration?. What kind of calibration do you provide? Can we have more T&amp;RH calibration data points .

Asked by: Amador Natividad
Hi Amador, Thank you for the inquiry. The RH87 does not include NIST certification. It comes with CofC. Please contact our Customer Care if return for calibration pricing is needed. Our calibration is ISO9001 certified. Please contact our temperature engineers if special test points are needed. Best regards OMEGA
Answered by: NorwalkAE
Date published: 2020-04-24
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