Tegam 921B, Operation Manual, Page: 23 / 47

Operating Instructions
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a. Alternatively, to disregard the new offset value and exit the Setup Menu,
press
.
9. OFFSET is displayed at the top - left of the LCD display.
To set the probe offset when using a calibrated temperature probe with a known offset:
1. Press (1.5s) to enter the Setup Menu;
2. Press three (3) times to cycle to the Channel 1 Offset parameter;
3. Observe the current offset value displayed on the second line of the display;
4. Press to set the offset in 0.1 ° increments until the displayed offset value
equals the calibrated probe offset value ;
5. Press to save the offset value and proceed to Channel 2 offset ( 922B only), or
press to save the offset value and exit the Setup Menu.
a. Alternatively, to disregard the new offset value and exit the Setup Menu,
press
.
6. OFFSET is displayed at the top - left of the LCD display.
Open Wire Detection On/Off
Open Wire Detection allows the unit to detect if a thermocouple probe is connected to the
thermometer. This feature is not compatible with some thermocouple calibrators and can
result in measurement instability.
Turning Off Open Wire Detection in these situations can significantly improve reading
stability. Once off, Open Wire Detection will remain off until changed by following the below
steps, or the instrument is powered off.
If no thermocouple probe is connected and Open Wire Detection is disabled, the unit
will not indicate OPEn and may display erratic readings.
To change the Open Wire Detection setting:
1. Press (1.5s) to enter the Setup Menu;
2. Press four (4) times for 921B , five (5) times for 922B , to cycle to the Open
Wire Detection Off / On parameter;
3. “O W D OFF ” is flashing near the bottom of the LCD display, and the current Open
Wire Detection status is displayed on Line 2.
4. Press to change the Open Wire Detection setting as shown on Line 2 of the
display ;
a. ON indicates that Open Wire Detection is enabled;
b. OFF indicates that Open Wire Detection is disabled;
5. Press or to save the Open Wire Detection setting and exit the Setup Menu.