Extech Instruments PH210 User Manual page 5

Automatic (ATC) and Manual Temperature Compensation
The PH210 automatically compensates (ATC) for solution temperature deviations when the
Model 850188 temperature probe (inserted at bottom of meter) is placed in the measurement
solution. The temperature of a solution is displayed on the meter's lower LCD line.
To manually compensate for solution temperature deviations a separate thermometer must be
placed in the solution to monitor the solution's temperature; then proceed as follows:
1. Press and hold the SETTING button for 5 seconds. The display will show noATC.
2. Press ENTER and noATC will flash (indicating the automatic compensation is switched OFF
and Manual Temperature Compensation is active). Note that when noATC is not flashing
Automatic Temperature Compensation mode is active.
3. Use the up and down buttons to manually adjust the temperature value to match the
solution temperature (as determined by the solution thermometer). Once the temperature
is programmed, press ENTER to save the data and then press ESC to return to the normal
operating mode.
4. If the solution temperature changes, the manual temperature compensation procedure
must be repeated.
Temperature Units (C/F) Selection
To change the temperature units (
1.
Power on the device
2.
Press and hold the Setting button for 5 seconds, until the Setting mode is accessed
3.
Press the Setting button again; either an F or a C will be displayed
4.
Use the up arrow button to select the desired unit of measure for temperature solution
5.
Press ENTER to save the setting
6.
Press ESC to return to the normal mode of operation
Automatic Power OFF Enable/Disable
To conserve battery power, the instrument automatically shuts off after approximately 10
minutes of inactivity. To disable or enable this feature, follow the steps below:
1. Power on the device
2. Press and hold the SETTING button for 5 seconds until the Setting mode is accessed
3. Use the SETTING button to step to the screen that shows either OFF YES or OFF NO
4. Use the up arrow button to select YES (Auto Power OFF active) or NO (Auto Power OFF not
active)
5. Press the ENTER key to save the setting and to return to the normal operating mode
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