BM22s, BM25s,
BM25a
& BM27s
USER'S MANUAL
1) PRODUCT DESCRIPTION
Note: Top of the line model is used as representative for illustration
purposes. Please refer to your respective model for function
availability.
1) LCD display
2) Rotary Selector to Select additional functions (
Models 27s & 22s
only
), and to turn the Power On or Off (
Model 22s only
).
Model 25s
& 25a
does not have a physical Rotary Selector.
3) Push-button to Select additional functions (all models), and to
switch the Power On or Off (
Models 27s, 25s
& 25a
only
)
4) Input for all functions, or otherwise specified. Red test lead for
positive (+) polarity and Black test lead for Ground reference (-)
2) SAFETY
Terms in this manual
WARNING
identifies conditions and actions that could result in serious injury or even death to the user.
CAUTION
identifies conditions and actions that could cause damage or malfunction in the instrument.
This manual contains information and warnings that must be followed for operating the instrument safely and
maintaining the instrument in a safe operating condition. If the instrument is used in a manner not specified by the
manufacturer, the protection provided by the instrument may be impaired. The meter is intended only for indoor
use.
With test lead tip insulation CAP,
the meter is protected, against the users, by double insulation per
IEC/UL/EN61010-1 Ed. 3.0
,
IEC/EN61010-2-030 Ed. 1.0
,
IEC/EN61010-2-033 Ed. 1.0, IEC/UL/EN61010-031 Ed.
1.1
and
CAN/CSA-C22.2 No. 61010-1-12 Ed. 3.0
to CAT III 300V & CAT II 600V (CAT II 450V for
Model 25s
&
25a
).
In case of removing test lead tip insulation CAP, to CAT II 600V (CAT II 450V for Model 25s
& 25a
) only.
Measurement Category III (CAT III)
is for measurements performed in the building installation. Examples are
measurements on distribution boards, circuit-breakers, wiring, including cables, bus-bars, junction boxes, switches,
socket-outlets in the fixed installation, and equipment for industrial use and some other equipment, for example,
stationary motors with permanent connection to the fixed installation.
Measurement Category II (CAT II)
is for measurements performed on circuits directly connected to the low
voltage installation. Examples are measurements on household appliances, portable tools and similar equipment.
WARNING
To reduce the risk of fire or electric shock, do not expose this product to rain or moisture. To avoid electrical shock
hazard, observe the proper safety precautions when working with voltages above 60 VDC or 30 VAC rms. These
voltage levels pose a potential shock hazard to the user. Do not touch test lead tips or the circuit being tested
while power is applied to the circuit being measured. Keep your fingers behind the finger guards of the test leads
during measurement. Inspect test leads and probes for damaged insulation or exposed metal before using the
instrument. If any defects are found, replace them immediately.
