Zero Adjustment
The output zero offset voltage of the Clamp may change due to thermal
shifts and other environmental conditions. To adjust the output voltage to
zero:
1.
Make sure that the Clamp is away from the current carrying
conductor.
2.
Push
Zero Adjust
and wait until the power LED (
+
) stops flashing.
Note
The Clamp cannot do the zero adjustment if the output
voltage is ±25 mV.
Current Measurement
To measure current:
1.
Turn on the Clamp and check the LED status.
2.
Connect the output lead/adapter to an oscilloscope, mulitmeter,
power analyzer, or other measuring equipment.
3.
If necessary, adjust the Clamp output voltage to zero as described
in the section
.
4.
Clamp the jaw around the conductor and make sure there is good
contact between the closing faces of the jaw.
5.
Take measurements as required. Positive output indicates that the
current flow is in the direction shown by the arrow on the clamp.
Maintenance
Before each use, inspect the Clamp. Look for cracks or missing portions of
the housing and output cable insulating cover and for loose or weakened
components.
Cleaning and Storage
Periodically wipe the case with a damp cloth and detergent. Do not use
abrasives or solvents. Do not immerse the Clamp in liquids.
Battery Replacement
XW
Warning
To prevent possible electrical shock, fire, or personal injury:
• Replace the batteries when the low battery indicator
shows to prevent incorrect measurements.
• Always remove the Clamp from any live electric circuit,
and make sure leads are disconnected before removing
the battery cover.
• Never operate the Clamp without the battery cover
installed.
When the clamp approaches the minimum operating voltage, the red LED
indicates the battery is low.
To replace the battery (see Figure
1.
Disconnect the Clamp from any conductor.
2.
Turn off the Clamp.
3.
Disconnect the output leads from external equipment.
