The Battery Operated Psychrometer is completely self-contained in a high impact,resistant molded
The Battery Operated Psychrometer is completely self-contained in a high impact, resistant molded, instrument case. Housed in this 10" x 4-1/2" x 2" case is a pair of highly accurate thermometers, a permanent accurate fan motor, a two ounce water bottle, a thermometer illuminating lamp, and a combined On/Off switch and intensity control. Externally provided with each battery operated psychrometer are an instruction manual, a humidity calculator slide rule, and a spare parts kit, which consists of extra wicking material and a lamp. All of the above are enclosed in a rugged carrying case. With the instrument removed from the carrying case, the instrument may be wall mounted and removed at any time for portable use.
The wet and dry bulb method of measuring moisture in the air is based on the evaporative cooling effect of the wet bulb. The dryer the surrounding air the more rapid water will evaporate. This causes the wet bulb to depress the temperature until a balance takes place between the cooling effect and the normal heat gain from ambient conditions.
Features
Greater than 1% accuracy for RH determination
Greater than 1/4% accuracy on thermometers
Steady aspiration allows readings in 1-1/2 to 2 minutes
Customized, high density polyethylene carrying case and spare lamp included
Dewpoint and relative humidity readings
Relative humidity accuracy to ±1% full scale
Requires no whirling
Applications
Air conditioning and heating
Refrigeration and laboratories
Hospitals and meteorology
Computer rooms and printing
Mining and transportation
Warehousing and textile manufacturing
Food and chemical processing
SPECIFICATIONS
Response Time
11/2 to 2 minutes
Psychrometric Tables
+10°F to 140° F for relative humidity and dewpoint
(-15°C to +44°C for relative humidity)
Accuracy
±1% full scale
Thermometers
10°F to 120°F: ±0.3% accuracy over entire range
(-15°C to 45°C : ±2% accuracy over entire range)
Slide Rules
+20°F to 120°F, -7°C to 49°C
Battery Life
1000 hours with 3 "D" cells
Size
10" x 41/2" x 2"
Weight
2-1/2 pound including case
CAT NO.
MODEL
DEscRIPTION
AVAIL
PRICE
ET87101
22010
BATTERY OPERATED PSYCHROMETER
Yes
356,400
ET80014
80014F
OPTIONAL MATCH REPLACEMENT THERMOMETER FOR Battery Operated Psychrometer
Yes
84,240
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