Hioki DM7275-01 - Contact Check

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Contact Check
6.3 ContactCheck
Enabling the contact check function lets you check the connection state between the HIGH and
LOW terminals.
If the measurement cables become disconnected from the measurement target, the instrument will
detect a contact error and display NoCntct. If the instrument displays NoCntct, check the contact
state at the ends of the measurement cables and check for breaks in the cables.
Contact state Goodcontact
Poor contact
(indicatedbybrokenredcircle)
Measuring a
battery’s output
voltage
Instrument
Instrument
Measuring the
potential across a
battery’s enclosure
Instrument
Aluminum foil
Outerlm
Instrument
Aluminum foil
Outerlm
Instrument display Measured value display
NoCntct display
The contact check function can be used with the 10 V range and lower ranges.
Contactcheckcanbeenabled
100 mV range, 1000 mV range, 10 V range
Contactcheckcannotbeenabled
100 V range, 1000 V range
For more information: see "Contact check" in “Appx. 2 Measuring the Enclosure Potential of
Laminated Lithium-ion Batteries” (p. Appx.2)
• Even if the contact check function is enabled, the instrument will display OvrRng without
registering a contact error if its internal amplier is in the over-range state, even if the
measurement cable is unconnected.
See “Measurement error detection order” (p. 47) and “Appx. 1 Block Diagram” (p. Appx.1).
• For more information about contact check and delay timing, see “Trigger function settings”
(p. 39).
6
Useful Functionality
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