Brymen BM251s, Руководство пользователя

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input jacks and turn OFF the meter before opening the case. Do not operate with open case.
Install only the same type of fuse or equivalent
Calibration
Periodic calibration at intervals of one year is recommended to maintain meter accuracy. Accuracy
is specified for a period of one year after calibration. If self-diagnostic message “ C_Er ” is being
displayed while powering on, some meter ranges might be largely out of specifications. To avoid
mis-leading measurements, stop using the meter and send it for re-calibration. Refer to the
LIMITED WARRANTY section for obtaining warranty or repairing service.
Cleaning and Storage
Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives or solvents.
If the meter is not to be used for periods of longer than 60 days, remove the battery and store it
separately
Trouble Shooting
If the instrument fails to operate, check battery, fuses, leads, etc., and replace as necessary.
Double check operating procedure as described in this user’s manual
If the instrument voltage-resistance input terminal has subjected to high voltage transient (caused
by lightning or switching surge to the system) by accident or abnormal conditions of operation, the
series fusible resistors will be blown off (become high impedance) like fuses to protect the user
and the instrument. Most measuring functions through this terminal will then be open circuit. The
series fusible resistors and the spark gaps should then be replaced by qualified technician. Refer
to the LIMITED WARRANTY section for obtaining warranty or repairing service.
Battery and Fuse replacement
Battery use: 1.5V AAA Size battery x 2
Fuses use:
Fuse (F1) for

AmA current input:
0.4A /1000V ac & dc, IR 30kA, F
fuse; Dimension: 6 x 32 mm
Fuse (F2) for A current input:
11A/1000V ac & dc, IR 20kA, F fuse;
Dimension: 10 x 38mm
Battery and Fuse replacement:
Loosen the screw from the access
cover of the case bottom. Lift the
access cover. Replace the batteries or
fuse. Re-fasten the screw.