Omega 25 User Manual

18

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

• 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)

1. Connect measurement equipment under test (eg. RTD thermometer,

ohmmeter, etc.) to the instrument as shown in Figures 8, 9, or 10.