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Operating Instructions

3-8

. 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 (HH912T 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 HH911T, five (5) times for HH912T, to cycle to the

Open Wire Detection Off/On parameter;

3. “OWD OFF” is flashing near the bottom of the LCD display, and the current Ope

ire 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.

Omega HH911T User Manual

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