Sper Scientific 840034 Psychrometer - Anemometer - Manual (Page 3)

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Thank you for purchasing this psychrometer/anemometer.
The unique meter design contains seven HVAC & RH
parameters in one: Humidity, Air Temperature, Dew Point,
Wet Bulb, Air Velocity, Air Volume, and BTU.
The temperature/humidity sensor is built in to the probe and
is protected by a turnable cap. Please turn the cap open to
get accurate temperature and humidity readings when in
operation.
The microprocessor-based psychrometer is a must-have
device for HVAC engineers. It is easy to get wet bulb, dew
point and BTU readings.
INTRODUCTION