Dwyer Instruments 485B Data sheet

Model

485B

Thermo-Hygrometer

Measures % RH, Temperature, Dew Point and Wet Bulb

Model 485B Digital Thermo-Hygrometer is a versatile, compact, hand-held instrument
for measuring percentage of relative humidity and temperature in °F or °C. Dew point and
wet bulb temperature is derived from relative humidity and temperature measurements
and displayed on the LCD. Hold key freezes the current temperature and relative humidity

TEST EQUIPMENT

readings for situations where readings fluctuate. Store up to 99 readings with the non­volatile memory function – ideal for technicians needing to take multiple readings for later
analysis.

Model 485B-1, Digital Thermo-Hygrometer includes 9V battery, sensing probe, wrist
strap, soft carrying case and instructions

SPECIFICATIONS
Service: Humidity, temperature, wet bulb and dew point temperature detection in

clean air.

Temperature Limits:

Process: -40 to 176°F (-40 to 80°C);
Ambient: 5 to 125°F (-15 to 51°C).

Range Relative Humidity: 0 to 100% (non-condensing).
Accuracy Relative Humidity: ±2% FS over 10 to 90% @ 77°F (25°C).
Range Temperature: -20 to 140°F (-28 to 60°C).
Accuracy Temperature: ±0.54°F @ 72°F (±0.3°C @ 25°C).
Display: 4.5 digit LCD.
Resolution: 0.1%, 0.1 °F/°C.
Probe Length: 8˝ (203 mm) insertion.
Power Requirements: 9 V alkaline battery, included, user replaceable.
Weight: 16 oz (454 g).
Agency Approvals: CE.

ADDITIONAL PARTS
RP1, Thermo-hygrometer % RH and temperature probe with coiled cable
UHH-C1, Soft carrying case