11
to-phase voltage which is significantly higher than the phase-to-earth voltage. To avoid
exceeding the voltage rating of the protection fuse(s) accidentally, always consider the
phase-to-phase voltage as the working voltage for the protection fuse(s).
Electric Field EF-Detection (
TBM829
only)
At any function, press the
EF
button for one second or more to toggle to EF-Detection
feature. The meter displays “E.F.” when it is ready. Signal strength is indicated as a series of
bar-graph segments on the display plus variable beep tones.
●
Non-Contact EF-Detection:
An antenna is located along the top of the meter, which
detects electric field surrounds current-carrying conductors. It is ideal for tracing live wiring
connections, locating wiring breakage and to distinguish between live or earth connections.
●
Probe-Contact EF-Detection:
For more precise indication of live wires, such as
distinguishing between live and ground connections, use the Red (+) test probe for direct
contact measurements.
PC computer interface capabilities
The instrument equips with an optical isolated interface port at the meter back for data
communication. Optional purchase PC USB interface kit BU-82X is required to connect the
meter to the PC computer.
MAX/MIN/AVG* (REC) at fast 20/s measurement mode (
TBM525* & TBM829
only)
Press
REC
button momentarily to activate MAX/MIN/AVG* recording mode. The LCD “R” &
“MAX MIN AVG*” turn on, and the reading update rate will be increased to 20/second. The
meter beeps when new MAX (maximum) or MIN (minimum) reading is updated. AVG*
(Average) reading is calculated over time. Press the button momentarily to read the MAX,
MIN, MAX-MIN and AVG* readings in sequence. Press the button for 1 second or more to
exit MAX/MIN/AVG* recording mode. Auto-ranging remains, and Auto-Power-Off is disabled
automatically in this mode. *AVG reading is not available to models
525
.
