2.
Turn the thermo-hygrometer over to access the rear battery compart-
ment. Press down slightly on the battery cover and slide it out to re-
move it.
3.
Remove the old battery if one is in place by lifting it up at the bottom
and pulling it out.
4.
Slide the new battery in at an angle, observing the proper polarity so
the terminals mate correctly, then press the bottom of the battery down
into the holder.
5.
Replace the battery cover.
6.
Replace the DC power cord and switch the power on.
Used batteries must be disposed of properly. See Section 1.2.1, Warnings.
6.3
Sensor Configuration
The thermo-hygrometer can be used with one or two sensors of either type at-
tached at either of the two ports. Extension cables can be used with the sensors
to allow the sensors to be placed at remote locations. The extension cables can
be up to 30m (100 ft.) in length. When a sensor is attached, the thermo-hy-
grometer detects the sensor automatically, reads its calibration parameters, and
begins to measure if the channel is enabled (see Section 6.9, Measuring).
6.4
Power Switch
To operate the thermo-hygrometer, slide the rear power switch to the ON (
)
position. When the thermo-hygrometer is not being used, slide the power
switch to the OFF (
) position before disconnecting the power source to
preserve the battery.
6.5
Power On Self-Test
When power is turned on, the thermo-hygrometer performs a self-test, checking
the system, sensors, sensor calibration parameters, memory, and buttons. If an
error occurs, an error message is displayed. See Section 11, Troubleshooting
for additional information on error messages.
6.6
Display Contrast
If the display appears too dark or too light, you can use the
u
and
d
buttons
at the main screen to adjust the contrast. The contrast can also be adjusted from
the DISPLAY SETTING menu (see Section 7.2.1, Display Setting).
22
Hart Scientific
6 General Operation
