9.9 Clamp Adaptor (FLEX) Current and Frequency Measurements
WARNING Do not measure the current on a circuit when the voltage increases to more
than 1000V. This can cause damage to the instrument and can cause injury to persons.
FLIR Flex Clamp Adaptors (Models TA72 and TA74, for example) and other clamp adaptors can
connect to the CM275 to display current measurements.
Note: When measuring current, enclose only one conductor with the jaws.
1. Turn the function dial to the position.
2. Connect a Clamp adaptor as shown in Fig. 9-2.
3. Set the Range of the Flex Clamp Adaptor to match the range of the CM275.
4. Use the button to select the range of the CM275 (1, 10, 100 mV/A). The
selected range appears on the CM275 display.
5. Operate the Flex Clamp per instructions provided with the Flex Clamp meter.
6. Read the current measured by the Flex Clamp on the CM275 LCD. Short press
the button to view the frequency (Hz).
Fig. 9-2 FLEX Clamp Application
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