Hu-7
Handheld Relative Humidity Meters
RH/Temperature Models Available
The RH-20 is a rugged handheld
digital meter which economically and
easily measures relative humidity and
temperature with an LCD readout. A
single probe containing both humidity
and temperature sensors attaches to
the meter with a 4.5' cable. Very
compact and portable, the RH20 is
ideal for checking RH in plant
maintenance, heating and
environmental industry and the high
technology computer industry.
Specifications
RH-20 and RH-21
RH20 Measuring Range: 32 to
175°F (0 to 80°C), 15-95% RH
RH21 Measuring Range: 15-95%
RH; -5 to 175°F; (-20 to 80°C)
RH10 Measuring Range:
15 to 95°RH
Resolution: 0.1% RH, 0.1°
Accuracy: ±2.0% (RH); ±1°F
Temp Response: Approx. 60 sec
Response Time, RH: 15 sec,
RH-21; 3 min, RH-20
Operating Temp: 32 to 122°F
(0 to 50°C); instrument only
Dimensions: 43⁄8" H x 27⁄8" W x 13⁄8" D
(111 x 73 x 35 mm)
Weight: 8.8 oz (250 g)
Battery: 9 V alkaline, included
Battery Life: 100 hrs., alkaline
Model RH-20-F
$
269
Includes
Sensor Probe,
Carrying Case,
and Manual.
DISCONTINUED
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Accurate to ±2.0% RH
or ±0.5°F or °C
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Measures 10% to 95% RH
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Measures 32 to 175°F
or 0 to 80°C
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0.1% RH or 0.1°F or °C
Resolution
⻬⻬
Includes Remote Sensor
Probe
Model RH-20
Humidity and
Temperature
Measurement
Hu-8
H
u
The RH-10 is an economical, pocked
size hygrometer with LCD readout
and display hold function. It checks
relative humidity from 10 to 95% and
comes with an integral sensor.
Relative Humidity and
Temperature Meter
Specifications
Measuring Range: 10% to 95% RH
Accuracy: ±2.0%
Temperature Drift: ±0.5% per 10 °C
Sensor: Dielectric
Display: 31⁄2 Digit 1⁄2" LCD
Operating Temp.:
32 to 122°F (0 to 50°C)
Battery: 9 V alkaline, included
Battery Check: Automatic low
battery indication
Dimensions: 4.875 H x 2.875 W
x 1.375"D (123 x 73 x 35 mm)
Weight: 5.5 oz (160 g) including
battery
Integral
Sensor
⻬⻬
Fast RH Response - 15 Seconds
⻬⻬
5 to 95% RH Range
⻬⻬
Combines Temperature and
Humidity Measurement in
One Unit
⻬⻬
Measures Temperature from
-5 to 175°F or -20 to 80°C
⻬⻬
±2% RH and ±1°F Accuracy
⻬⻬
0.1% RH and 0.1° Resolution
⻬⻬
Rugged High Impact Plastic
Construction
Each unit comes complete with sensor probe, dewpoint reference card, carrying case, 9 V battery and operator's manual.
Ordering Example: RH-21-F, fast response handheld hygrometer/thermometer with °F readout and remote probe, $395.
* Not Available on RH10 Model.
RH-10
$
149
RH-21
$
395
MOST POPULAR MODELS HIGHLIGHTED!
DISCONTINUED
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Economical
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Hold Function
⻬⻬
Integral Sensor
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Case Included
⻬⻬
Relative Humidity Only
Economical Handheld
Relative Humidity Meter
To Order
(Specify Model Number)
Model Number Price Description
RH-21-F $395 Fast Response Handheld Hygrometer/Thermometer with Remote Probe, °F
RH-21-C 395 Fast Response Handheld Hygrometer/Thermometer with Remote Probe, °C
RH-21-RP 265 Replacement Probe for RH-21
RH-20-F 269 Handheld Hygrometer/Thermometer with Remote Probe, °F
RH-20-C 269 Handheld Hygrometer/Thermometer with Remote Probe, °C
RH-20-RP 230 Replacement Probe for RH-20
RH-10 149 Handheld Hygrometer with Integral Probe
*CAL-3-HU 125 NIST Traceable Calibration
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