KYORITSU 2434 - Manual (Page 5)

5. PREPARATIONS FOR MEASUREMENT
5-1 Checking Battery Voltage
Set the Range Selector Switch to any position other than the OFF
position. If the marks on the display is clearly visible without "BATT"
mark showing, battery voltage is OK. If the display blanks or "BATT"
is indicated, replace the batteries according to section 8: Battery
Replacement.
NOTE
When the instrument is left powered on, the Sleep function
automatically shut the power off; The display blanks even if the
Range Selector Switch is set to a position other than the OFF
position in this state. To power on the instrument, turn the Range
Selector Switch or press any button. If the display still blanks, the
batteries are completely exhausted. Replace the batteries.
5-2 Checking Switch Setting
Make sure that the Range Selector Switch is set to the appropriate
range.
A l s o m a k e s u r e t h a t d a t a h o l d f u n c t i o n i s n o t e n a b l e d . I f
inappropriate range is selected, desired measurement cannot be
made.
6. OPERATING INSTRUCTIONS
DANGER
●In order to avoid possible shock hazard, never make measurement
on circuits having a potential of 300VAC or greater.
●The transformer jaws are made of metal and their tips are not
completely insulated. Be especially careful about the possible
shorting where the equipment under test has exposed metal parts.
●Never make measurement with the battery compartment cover
removed.
CAUTION
●Take sufficient care to not to apply shock, vibration or excessive
force to the jaw tips. Otherwise, precisely adjusted Transformer
Jaw tips will be damaged.
●When a foreign substance is stuck in the jaw tips or they cannot
properly engage, the transformer jaws do not fully close. In
such a case, do not release the jaw trigger abruptly or attempt
to close the transformer jaws by applying external force. Make
sure that the jaws close by themselves after removing the
foreign substance or making them free to move.
●The maximum size of a conductor to be tested is 28mm in
diameter. Accurate measurement cannot be made on a
conductor larger than this, because the transformer jaws cannot
fully close.
●When measuring large current, the transformer jaws may buzz.
This has no effect on the instrument's performance or safety.