16
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 “
rE-O
” is being displayed while powering on, the meter is re-
organizing internal parameters. Do not switch off the meter, and it will be back to normal
measurement shortly. However, 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:
Single 9V battery; NEDA1604G, JIS006P IEC6F22, NEDA1604A, JIS6AM6 or
IEC6LF22
Fuses use:
TBM811, TBM812 & TBM829
models:
Fuse (FS1) for
AmA current input: 1A/600Vac, IR 10kA or better, F fuse;
Fuse (FS2) for A current input: 10A/600Vac, IR 100kA or better, F fuse
TBM811XEX, TBM812XEX & TBM525
models:
Fuse (FS1) for
AmA current input: 0.44A/1000Vac & Vdc, IR 10kA or better, F fuse;
Fuse (FS2) for A current input: 11A/1000Vac & Vdc, IR 20kA or better, F fuse
Battery replacement:
Loosen the 2 screws from the battery access door of the case bottom. Lift the battery
