Omega cl310 User Manual page 18

be ON and the actual temperature of
the thermocouple will be measured.
With CJC OFF, the calibrator will
measure the difference between the
thermocouple at the junction and at its
TC input terminal.
Note: CJC off mode should only be
used when calibration is being done
using an external ice bath.
To use the thermocouple to measure temperature, follow these
steps:
1. Attach the thermocouple leads to the TC miniplug, and insert the
plug into the input/output of the calibrator, as in Figure 7.
Note: For best accuracy wait 2 to 5 minutes for the temperature
between the miniplug and the calibrator to stabilize before any
measurements are taken.
2. Switch to lower display from Main Menu.
3. Select TC from the primary parameters. Choose [IN] in the
input/output control, and than the thermocouple type from the
sensor types. The temperature unit may also be changed from
Celsius to Fahrenheit.
The calibrator can also measure the mV of a Thermocouple, which
can be used along with a table in case the corresponding TC type is
not supported by the calibrator. To do so, proceed as above and
choose mV from sensor types.
Figure 7. Measuring Temperature Using Thermocouple Terminals
3.3-2 Using Resistance-Temperature-Detectors (RTDs)
The supported types of RTDs are shown in Section 10.
Specifications. RTDs are characterized by their 0°C resistance, R0.
The calibrator accepts two, three, and four wire inputs, with four wire
input being the most accurate.
To use the RTD option, apply the following steps:
1.
2.
14
Switch to lower display [LOWER] from Main Menu.
Select RTD from the primary parameters. Select [IN] from
input/output control.
Note: The TC wire
used must match the
thermocouple type
being calibrated.