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1620A "DewK" Thermo-hygrometer
User's Guide
4.5
4.6
4.7
4.8
12
hours, typically. However, without external power, the display will be
inoperable.
Connect the Sensor
The sensor for channel 1 connects to the socket at the top-right, and the sensor
for channel 2, if used, connects to the socket on the right side. Either sensor
may be used with an optional extension cable up to 100 feet (30 meters) in
length.
Connect the Power Source
The thermo-hygrometer draws power from the provided power adapter. Plug
the adapter into a wall outlet of the appropriate voltage and insert the DC plug
into the DC power input of the thermo-hygrometer.
Switch the Power On
Power is turned on and off with the power switch located below the stand on
the back panel. To switch the power on, toggle the power switch to the '
position. To switch power off, toggle the power switch to the '
The instrument takes a few seconds to power up, initialize, and begin normal
operation. A self-test is performed, displaying the channel configuration and
status of the system, calibration, % battery power, memory, and buttons. If the
thermo-hygrometer calibration has expired and the alert message is enabled, the
user is notified and must press the Enter button to continue initialization. If an
error message is displayed on power up see Section 11, Troubleshooting.
Measure Temperature
After initialization, the temperature and relative humidity measurements for the
enabled channels are displayed. If recording is enabled, the measurements will
be automatically stored in memory. The display can be configured to display
the measurements in a variety of numerical and graphical formats. For informa-
tion on the various modes of operation of the thermo-hygrometer, see Section
7, Menu Functions.
'
' position.
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