©2003 DELMHORST INSTRUMENT CO.
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CALIBRATION & MAINTENANCE:
Continuous exposure to dirt and dust may shorten the life of the RH sensor and also
cause the meter to go out of calibration more quickly. Avoid exposure to liquids and
other contaminants. Suggested factory calibration interval is one year or more,
depending on the application and environment, as well as the desired accuracy.
Field calibration is not available for the HT-3000.
TECHNICAL SPECIFICATIONS:
Measurement –
Temperature: -20
°
C to 70
°
C, -4
°
F to 158
°
F
Relative Humidity: 0-100% RH
Dew Point: -40
°
C to 80
°
C, -40
°
F to 176
°
F
Absolute Humidity: 0.55 gpp to 3868 gpp
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 approx. 75 seconds
Relative Humidity: reaches 90% of full excursion in approx. 45 seconds
Resolution –
0.1
°
C; 0.1%RH
Power supply –
(1) 9V Alkaline battery.
Battery life –
Approx. 55 hours under constant use (no backlight) or 23 hours with backlight.
