Extech Instruments RH101 User Manual

RH101-EU V3.0 11/07
2
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
Display Dual LCD with Backlight and status indicators
Sensor Type Humidity: Precision capacitance sensor
Temperature: Thermistor (probe) and InfraRed
Response Time IR Temperature: 0.5 seconds; Probe Temperature and
Relative Humidity: 3 minutes
Accuracy note Accuracy is specified for the following ambient temperature
range: 64 to 82°F (18 to 28°C)
Sampling Rate 2.5 samples per second
InfraRed Emissivity 0.95 (fixed)
IR Field of View D/S = Approx. 8:1 ratio (D = distance, S = spot)
Laser power Less than 1mW
IR Spectral Response 6 to 14 μm (wavelength)
Operating Conditions 32 to 122
o
F (0 to 50
o
C); < 80% RH non-condensing
Storage Conditions 14 to 140
o
F (-10 to 60
o
C); <80% RH non-condensing
Power Supply 9V Battery with auto power off (after 10 minutes)
Battery Life Approx. 24 hours (if Backlight and Laser are used continuously
the battery life is reduced to 2 to 3 hours approx.)
Dimensions / Weight 5.9 x 2.8 x 1.4” (150 x 72 x 35mm); 8.3 oz. (235g)
Patent Notice U.S. Patent 7168316
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
Function Range and Resolution Accuracy
Humidity
10.0 to 95.0% RH ± 3.5% RH
Air Temperature
-4 to 140
o
F (-20 to 60
o
C) ± 3.0
o
F (± 2.0
o
C)
-58.0 to -4.0
o
F (-50.0 to -20.0
o
C) ± 9
o
F (± 5
o
C)
-4.0 to 199.9
o
F (-20.0 to 93.3
o
C)
200 to 400
o
F (93
o
C to 204
o
C)
± 2% of rdg or ± 4
o
F (± 2
o
C)
IR Temperature
400 to 932
o
F (204
o
C to 500
o
C) ± 3% of rdg

Extech Instruments RH101 Specifications

General

Brand	Extech Instruments
Model	RH101
Category	Thermometer
Language	English