Brymen BM079 User Manual page 14

Clamp-on multimeter series
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13
Using the Hi-sensitivity mode
for Motors:
Connect to the Motor as illustrated. Be sure the electricity supply is removed. From the
perspective of looking down the shaft of the motor, speed-spin it clockwise to generate
sufficient signal strength for proper meter detection. If the meter indicates a clockwise
movement, the motor leads connected to L1, L2 and L3 of the meter are L1, L2 and L3
(also known as R, S and T), respectively. If the meter indicates a counter-clockwise
movement, swap any two connects between the meter and motor. Then retest.
Using the Normal mode
for MAINS (electricity supply):
Connect to the MAINS as illustrated. If the meter indicates a clockwise movement, the
phases connected to L1, L2 and L3 of the meter are L1, L2 and L3 (also known as R, S
and T), respectively. If the meter indicates a counter-clockwise movement, swap any
two connects between the meter and phases. Then retest. Connect the above
mentioned L1, L2 and L3 of a Motor and that of the MAINS respectively should get a
clockwise motor movement.
Using the Complementary Beeper feature:
The Complementary Beeper feature is selected in Power-up option. Press and hold the
REC button while turning the meter on to enable. If the segments indicate a clockwise
movement, the beeper sounds a single long beep per segment cycle. If the segments
indicate a counter clockwise movement, the beeper sounds 3 short beeps per segment
cycle.
Hold
Hold feature freezes the display for later view. LCD " " turns on. Press the HOLD
button momentarily to toggle the hold feature.
Record mode
Press REC button momentarily to activate MAX/MIN/AVG recording mode. LCD " " &
"MAX MIN AVG" turn on. 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 and AVG readings in sequence. Press
the button for 1 second or more to exit this mode. Auto-Power-Off is disabled
automatically in this mode.
Relative-Zero ( ZERO) mode (Models 079, 078, 077, 076 & 073 only)
Relative-Zero allows the user to offset the meter consecutive measurements with the
main display displaying reading as the reference value. LCD " " turns on. Press the

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