Delmhorst Instrument HT-3000 - Manual (Page 7)

Accuracy
Temperature: +/- 1°C over 0°C -70°C, +/- 1.8°F over 32°F to
158°F
Relative Humidity: +/-3%
Response time
Temperature: reaches 80% of full excursion in approximately
75 seconds
Relative Humidity: reaches 90% of full excursion in approxi-
mately 45 seconds
Resolution
0.1ºC; 0.1%RH
Power supply
(1) 9V Alkaline battery.
Battery life
Approximately 55 hours under constant use (no backlight) or
23 hours with backlight.
CARE OF YOUR METER
To keep your meter in good working order:
hStore meter in a clean, dry place. The protective carry-
ing case provided is an ideal storage place when the
meter is not in use.
hChange the 9-Volt battery as needed. Continued use with a
low battery may cause the meter to go out of calibration.
h Clean the meter with any biodegradable cleaner. Use the
cleaner sparingly and on external parts only.
hRemove the battery if the meter will not to be used for
one month or longer.
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HT-3000.qxp:FX-2000 owners manual 4/21/09 3:46 PM Page 8