Omega Products RH820U User Manual
Humidity/Temperature
Handheld Meter
Available with USB
and Wireless Interfaces
RH820 Series
No Points
Standard
U USB Port Provides
Excellent User
Interface (RH820U)
U Wireless 2-Way
Transmission (RH820W)
U 2 Temperature Sensors
(Internal NTC and External
K-Type) and Humidity
Sensor Together
U Wet/Dry Bulb, Dew Point
and %RH
U MAX/MIN/AVG/REL/HOLD
Function
The RH820 Series are low cost,
high performance handheld meters
available with USB or wireless
connectivity. They offer a double
display to show the temperature and
humidity from built in sensors and
can alternately display data from
a separate Type K thermocouple
connected via SMP type miniature
connector. Save function allows
storage of up to 256 readings (no
time-stamp) to internal non-volatile
memory. Software for USB and
wireless versions is included to
allow internal, external temperature,
and RH data to be recorded by a
PC. Interface cable is included with
the USB version; receiver with the
wireless version.
Specifications
Display: 3.5" digit LCD with a maximum
reading of 1999
Low Battery Indication: The “ ”
is displayed when the battery voltage
drops below the operating level
Operating Environment: 0 to 50°C
(32 to 122°F) at <80% RH
Storage Environment: -20 to 60°C
(-4 to 140°F), 0 to 70% RH with battery
removed from meter
Accuracy: Stated accuracy at 23°C
±5°C, <75% RH
Models RH820U and
RH820W Come with
Windows
®
Compatible
Software
Battery: Four 1.5V “AAA” (included)
Dimensions: 160 H x 83 W x 38 mm D
(6.3 x 3.3 x 1.5")
Weight: Approx 265 g (0.6 lb)
including batteries
Temperature Range
Range: -50 to 1000°C (-58 to 1832°F)
Accuracy: ±(0.1% rdg +1°C) on
-50 to 1000°C; ±(0.1% rdg +2°F)
on -58 to 1832°F
Temperature
Sensor: Thermistor temperature sensor
Range: 0 to 60°C (32 to 140°F)
Resolution: 0.1°C/°F
Accuracy: ±2°C on 0 to 10°C, ±0.5°C
on 10 to 45°C; ±2°C on 45 to 60°C;
±4°F on 32 to 50°F, ±1°F on 50 to
113°F; ±4°F on 113 to 140°F
Relative Humidity
Sensor: Capacitive humidity sensor
Range: 0 to 100% RH,
non-condensing
Accuracy: ±2.5% at 25°C (77°F),
10 to 90% RH; ±5% at 25°C (77°F),
0 to 10% RH, 90 to 100% RH
Sensor Response Time for 90%
of Total Range: 60 sec typical
Sensor Hysteresis (Excursion
of 10% to 90% to 10% RH):
±1% RH typical
RH820W Frequency Range:
910~920 mHz, low current consumption
less than 1 mA, the transmitting
distance can reach 25M
RH820
To Order Visit omega.com/rh820 for Pricing and Details
Model No. Description
RH820 Humidity/temperature handheld meter
RH820U Humidity/temperature handheld meter with USB interface
RH820W Humidity/temperature handheld meter wireless interface
Note: All wireless units are USA, 900 mHz frequency band versions.
Accessories
Model No. Description
HH800-ADAPTOR AC adaptor (USB model only)
SC-800 Soft case for HH800 series
Comes complete with 4 “AAA” batteries, Type K thermocouple, rubber boot, NIST calibration
(no points) and operator’s manual. RS820W also comes with software and receiver, RH820U
comes with software and USB cable.
Ordering Example: RH820, humidity/temperature meter.
Hu-41
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