Omega CL27 - Manual (Page 20)

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6. Select the resolution desired (0.1°/1° key).
NOTE: With 1° resolution, one less key stroke will be required to
enter calibrator output temperatures via the keypad.
7. The unit accepts numeric inputs by first changing the keypad to its num-
ber-entry mode (NUM) by depressing the CHANGE/ENTER key once.
The numeric display will flash, the OPR annunciator will turn off, and the
NUM annunciator will turn on. Key in desired temperature value, most sig-
nificant digit first. After the desired temperature value is keyed in, hit
CHANGE//ENTER to return to OPR mode.
7. To enter a value of 212° with 0.1° resolution, the following keystrokes are
used:
CHANGE/ENTER, 2, 1, 2, 0, CHANGE/ENTER
NOTES:
• Invalid numeric entries (eg. a temperature beyond the span of
the selected TC type) will cause a corresponding error code to
be displayed.
• To enter negative (ie. minus) temperatures, hit the –0 key first
when in the NUM mode. The first hit on this key enters the neg-
ative sign. Subsequent hits enter zeros.
• To correct a numeric entry while in the NUM mode, hit the
CHANGE/ENTER key twice. This will return number entry to
the beginning of a new number.
• To return the calibrator output to 0° while in the OPR mode, hit
the CLEAR key.
• The unit can be used as a convenient °F to °C or °C to °F cal-
culator.
For example, to convert 77°F to a Celsius reading, go to the CALIB OPR
mode, enter the reading to be converted, and change scale.
eg. °F
eg. CHANGE/ENTER
eg. 77
eg. CHANGE/ENTER
eg. °C (Display reads 25°C)
7. CALIBRATOR MODE OPERATION (RTD, Thermistor & Ohms)
Set-Up:
1. Connect measurement equipment under test (eg. RTD thermometer,
ohmmeter, etc.) to the instrument as shown in Figures 8, 9, or 10.