Specifications - Extech Instruments RH101 User Manual

Introduction
Congratulations on your purchase of the Extech Hygro-Thermometer plus InfraRed
Thermometer. This device measures relative humidity, air temperature (with probe), and
surface temperature (with the InfraRed function). The large, easy-to-read backlit LCD
includes primary and secondary displays plus numerous status indicators. The InfraRed
feature includes a laser pointer for convenient targeting. Careful use of this meter will
provide years of reliable service.

Specifications

Function
Humidity
Air Temperature -4 to 140
IR Temperature
Display
Sensor Type
Response Time
Accuracy note
Sampling Rate
InfraRed Emissivity
IR Field of View
Laser power
IR Spectral Response
Operating Conditions
Storage Conditions
Power Supply
Battery Life
Dimensions / Weight
Patent Notice
Safety
• Use extreme caution when the laser pointer beam is on
• Do not point the beam toward anyone's eye or allow the beam
to strike the eye from a reflective surface
• Do not use the laser near explosive gases or in other
potentially explosive areas
Range and Resolution
10.0 to 95.0% RH
o
F (-20 to 60
o
-58.0 to -4.0 F (-50.0 to -20.0
o
-4.0 to 199.9 F (-20.0 to 93.3
o o
200 to 400 F (93 C to 204
o o
400 to 932 F (204 C to 500
Dual LCD with Backlight and status indicators
Humidity: Precision capacitance sensor
Temperature: Thermistor (probe) and InfraRed
IR Temperature: 0.5 seconds; Probe Temperature and
Relative Humidity: 3 minutes
Accuracy is specified for the following ambient temperature
range: 64 to 82°F (18 to 28°C)
2.5 samples per second
0.95 (fixed)
D/S = Approx. 8:1 ratio (D = distance, S = spot)
Less than 1mW
6 to 14 μm (wavelength)
o
32 to 122 F (0 to 50
o
14 to 140 F (-10 to 60
9V Battery with auto power off (after 10 minutes)
Approx. 24 hours (if Backlight and Laser are used continuously
the battery life is reduced to 2 to 3 hours approx.)
5.9 x 2.8 x 1.4" (150 x 72 x 35mm); 8.3 oz. (235g)
U.S. Patent 7168316
Accuracy
± 3.5% RH
o o
C) ± 3.0
o o
C) ± 9 F (± 5
o
C)
± 2% of rdg or ± 4
o
C)
o
C) ± 3% of rdg
o
C); < 80% RH non-condensing
o
C); <80% RH non-condensing
2
o
F (± 2.0 C)
o
C)
o o
F (± 2 C)
RH101-EU V3.0 11/07