IM CL235
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2.10 Average Measurement
(1) Set the Function Selector switch to the "
A", "
A", "
V" or "
V"
position.
(2) Press the
button once to enter from the normal mode to the Aver-
age mode. "
" should be indicated on the display.
(3) Follow instructions for ACV, DCV, ACA or DCA measurement.
(4) The display shows a running average of six readings over an interval of
about 2 seconds.
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IM CL235
3. Other Functions
3.1 Sleep
Function
This is a function to prevent the instrument from being left powered on in
order to conserve battery life. This function causes the instrument to enter the
Sleep (powered-down) mode about 30 minutes after the last switch or button
operation.
To exit the Sleep mode, turn the Function Selector switch back to "OFF", then
to any other operation, or press any button.
The current is consumed a little in the Sleep mode.
3.2 Data Hold Function
This is a function used to freeze the measured value on the display. Press the
Data Hold button to freeze the reading. The reading will be held regardless of
subsequent variation in input. "
" is shown on the upper right corner of the
display while the instrument is in the Data Hold mode.
To exit the Data Hold mode, press the Data Hold button again.
NOTE
If the instrument in the Data Hold mode goes into "sleep", it will return to the
normal mode.
3.3 LoHz
Function
In ACV or ACA range, if frequency of the voltage or current under test is 40Hz
or lower, the display indicates "LoHz" and sample rate is automatically
switched from the normal 3 times/sec to 2 times/sec to reduce fluctuation of
the reading.
"LoHz" is also indicated where input is 3% of full scale or less.
3.4 Optional
Accessories
Clamp Adapter Model 99025 (For AC current measurement only)
Clamp Adapter Model 99025 is designed to increase the measuring capability
of a clamp meter. With the use of the Clamp Adapter, you can not only extend
current range over 3000A, but also clamp on a large bus-bar or conductor.
(1) Set the Function Selector switch to the "
A " position.
(2) As shown in the figure below, clamp Model CL235 onto the pickup coil of
Model 99025.
(3) Clamp Model 99025 onto the bus-bar or conductor under test.
(4) Take the reading on Model CL235 and multiply it by 10.
IM CL235
11
NOTE
For the detailed specification, refer to the Clamp Adapter User’s Manual.
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IM CL235
4. Battery Replacement
WARNING
To avoid electric shock hazard, make sure to set the Function Selector switch
to "OFF" and remove the test leads from the instrument before trying to re-
place battery.
CAUTIOIN
Make sure to install battery in correct polarity as indicated in battery com-
partment.
If the battery voltage becomes too low for the instrument to operate normally,
"
" is shown on the display. Then, replace the battery. Note that when
the battery is completely exhausted, the display blanks without "
"
shown.
(1) Set the Function Selector switch to the "OFF" position.
(2) Unscrew and remove the battery compartment on the bottom of the in-
strument.
(3) Replace the battery observing correct polarity. Use a new 6F22 (Alkaline)
or 6LR61 (Manganese) 9V battery.
(4) Re-place and screw the battery compartment cover.
Battery
compartment cover
Screw
Battery
