Special Accessory; Instructions For Use Of The Amps Clamp 1 681 354; Connecting The Amps Clamp 1 681 - Bosch BAT 131 Original Instructions Manual

3.10

Special accessory

Designation Item number
Current probe 1 681 354 034
3.10.1 Instructions for use of the amps clamp
1 681 354 034
In conjunction with the amps clamp 1 681 354 034, the
following measurement results are added to the starter
and charging system test (see sections 4.5 to 4.8 -
Battery in the vehicle):
R
Starter current draw (with maximum and average
value)
R
Alternator charging current under various loads
R
Display of the measurement results in the protocol
printout
3.10.2

Connecting the amps clamp 1 681 354 034

i
In order to have the current appear on the protocol
printout with the correct sign, the amps clamp must
be connected in accordance with fig. 3 and fig. 4.
Fig. 2: Amps clamp 1 681 354 034
Alternator charging current
Fig. 3: Charging circuit
B1 Amps clamp with sign for direction of current flow in
positive direction immediately before or after vehicle
battery
G1 vehicle battery
G2 vehicle alternator
Charging current;
Reading on display of BAT 131 without sign
Discharging current;
Reading on display of BAT 131 with (–) sign
Robert Bosch GmbH
Starter current draw
Fig. 4: Discharging circuit
B1 Amps clamp with sign for direction of current flow in
positive direction immediately before or after vehicle
battery
G1 vehicle battery
E1 Electric load (starter)
Charging current;
Reading on display of BAT 131 without sign
Discharging current;
Reading on display of BAT 131 with (–) sign
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