Brymen BM195 User manual

USER'S
MANUAL
BM195
BM197
Versatile
Clamp-on
Multimeter
Series

1
1) SAFETY
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 protection rating, against the users, is double insulation per
UL/IE /EN61010-1 Ed. 2 & 3, IE /EN61010-2-030 Ed. 1, AN/ SA 22.2 No. 61010-
1 Ed. 2 & 3, IE /EN61010-2-032 Ed. 2 & IE /EN61010-031 Ed. 1.1:
Measurement ategory IV 1000V A & D .
Per IEC61010-1 (2010) OVERVOLTAGE CATEGORY
OVERVOLTAGE CATEGORY ll (CAT II) is for equipment intended to be supplied
from the building wiring. It applies both to plug-connected equipment and to
PERMANENTLY ONNE TED EQUIPMENT.
OVERVOLTAGE CATEGORY lll (CAT III) is for equipment intended to form part of a
building wiring installation. Such equipment includes socket outlets, fuse panels, and
some MAINS installation control equipment.
OVERVOLTAGE CATEGORY lV (CAT IV) is for equipment installed at or near the
origin of the electrical supply to a building, between the building entrance and the main
distribution board. Such equipment may include electricity tariff meters and primary
overcurrent protection devices.
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.

2
WARNING
To reduce the risk of fire or electric shock, do not expose this product to rain or
moisture. The meter is intended only for indoor use.
To avoid electrical shock hazard, observe the proper safety precautions when working
with voltages above 60 VD or 30 VA rms. These voltage levels pose a potential
shock hazard to the user. Before and after hazardous voltage measurements, test the
voltage function on a known source such as line voltage to determine proper meter
functioning.
Keep your hands/fingers behind the hand/finger barriers (of the meter and the test
leads) that indicate the limits of safe access of the hand-held part during measurement.
Inspect test leads, connectors, and probes for damaged insulation or exposed metal
before using the instrument. If any defects are found, replace them immediately. Only
use the test lead provided with the equipment or UL Listed Probe Assembly rated AT
IV 1000V or better.
This lamp-on meter is designed to apply around or remove from uninsulated
hazardous live conductors. But still, individual protective equipment must be used if
hazardous live parts in the installation where measurement is to be carried out could
be accessible.
CAUTION
Disconnect the test leads from the test points before changing meter functions.
INTERNATIONAL ELECTRICAL SYMBOLS
!
!!
!
aution ! Refer to the explanation in this Manual
aution ! Risk of electric shock
Earth (Ground)
Double Insulation or Reinforced insulation
Fuse
A --Alternating urrent
D --Direct urrent
Application around and removal from hazardous live conductors is permitted
2) CENELEC irectives
The instruments conform to ENELE Low-voltage directive 2006/95/E and
Electromagnetic compatibility directive 2004/108/E

3
3) PRO UCT ESCRIPTION
This user's manual uses only representative model(s) for illustrations. Please refer
specification details for function availability to each model.
1) Antenna for Non- ontact EF-
Detection
2) Hand/Finger Barrier to
indicate the limits of safe
access of the meter during
measurement
3) Rotary-switch Selector to turn
the power ON/OFF and
Select a function
4) Push-buttons for special
functions & features.
5) Input Jack for all functions
EX EPT non-invasive D A
& A A current functions
6) ommon (Ground reference)
Input Jack for all functions
EX EPT non-invasive D A &
A A current functions
7) 3-5/6 digits 6000 counts & 3-
1/2 digits 2000 counts dual
numeric L D display
8) Jaw trigger for opening the
clamp jaw
9) Jaw center (& D A polarity)
Indicator, at where best D A &
A A accuracy is specified
10) Hall-effect lamp Jaw for
A & D current magnetic field
pick up

4
4) OPERATION
CAUTION: Before and after hazardous voltage measurements, test the voltage
function on a known source such as line voltage to determine ro er meter functioning.
AutoCheckTM mode
This innovative AutoCheckTM feature automatically selects measurement function of
ACV Hz, CV, or Resistance (Ω
ΩΩ
Ω) based on the input via test leads.
●With no input, the meter displays “Auto” when it is ready.
●With no voltage signal but a resistance below 10MΩ (nominal) is present, the meter
displays the resistance value. When the resistance is below the “Audible Threshold”,
the meter further gives a continuity beep tone.
●When a signal above the voltage threshold of 1.5V D or A up to the rated 1000V is
present, the meter displays the voltage value in appropriate D V or A V, whichever
larger in peak magnitude.
Note:
*Range-Lock and Function-Lock Feature: When a measurement reading is being
dis layed in AutoCheckTM mode, ress the RANGE or ELECT button momentarily 1
time can lock the range or function it was in. Press the button momentarily re eatedly

5
to ste through the ranges or functions.
*As Hazardous-Alert: When making resistance measurements in AutoCheckTM
mode, an unex ected dis lay of voltage readings alerts you that the object under test
is being energized.
*Ghost-voltage Buster: Ghost-voltages are unwanted stray signals cou led from
adjacent hard signals, which confuse common multimeter voltage measurements. Our
AutoCheckTM mode rovides low (ram -u ) in ut im edance (a rox. 2.5kΩ at low
voltage) to drain ghost voltages leaving mainly hard signal values on meter readings. It
is an invaluable feature for recise indication of hard signals, such as distinguishing
between hot and o en wires (to ground) in electrical installation a lications.
WARNING:
AutoCheckTM mode in ut im edance increases abru tly from initial 2.5kΩ to a few
hundred kΩ’s on high voltage hard signals. “LoZ” dis lays on the LCD to remind the
users of being in such low im edance mode. Peak initial load current, while robing
1000VAC for exam le, can be u to 566mA (1000V x 1.414 / 2.5kΩ), decreasing
abru tly to a rox. 3.37mA (1000V x 1.414 / 420kΩ) within a fraction of a second. Do
not use AutoCheckTM mode on circuits that could be damaged by such low in ut
im edance. Instead, use rotary-switch selector or high in ut im edance voltage
modes to minimize loading for such circuits.
VF -ACV
Hz
& ACV
Hz
functions
Inputs are made through the test leads terminals.
VF -ACV Hz function is to deal with VFD (Variable Frequency Device) signals. It,
however, further pre-selects the most appropriate voltage-ranges and thus the Hz
trigger levels to best cope with most VFD-Voltage and VFD-Frequency applications.
Note: The Hz trigger level is determined by the AC/ C+AC Voltage or Current
function-range being in use. Press RANGE button to select
different
function-ranges
and thus
trigger levels manually.
CV & C+ACV
Hz
(Model 197 only) functions
Inputs are made through the test leads terminals. Defaults at CV Function. Press
SELECT button momentarily and release to select C+ACV Hz.

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ACA
Hz
, CA & C+ACA
Hz
(Model 197 only) functions
Input is made through the clamp jaws for non-invasive current measurements. Defaults
at ACA Hz Function. Press SELECT button momentarily and release to select the
subject functions in sequence.

7
CAUTION (Application and removal of the Clamp-on meter)
For non-invasive current measurements, press the jaw trigger and clamp the jaws
around conductor(s) of only one single pole of a circuit for load current measurement.
Make sure the jaws are completely closed, or else it will introduce measurement errors.
Enclosing conductor(s) of more than one pole of a circuit may result in differential
current (like identifying leakage current) measurement. Locate the conductor(s) at the
Jaws center as much as possible to get the best measuring accuracy. For removal,
press the jaw trigger and remove the jaws from the conductor(s).
Adjacent current-carrying devices such as transformers, motors and conductor wires
will affect measurement accuracy. Keep the jaws away from them as much as possible
to minimize influence.
Ω
ΩΩ
Ω Resistance & Continuity functions
Inputs are made through the test leads terminals. Defaults at Ω
ΩΩ
Ω Resistance. Press
SELECT button momentarily and release to select. Continuity
Capacitance & iode functions
Inputs are made through the test lead terminals. Defaults at Capacitance. Press
SELECT button momentarily and release to select iode.
Note
When using Diode test function, normal forward voltage dro (forward biased) for a
good silicon diode is between 0.400V to 0.900V. A reading higher than that indicates a
leaky diode (defective). A zero reading indicates a shorted diode (defective). An OL
indicates an o en diode (defective). Reverse the test leads connections (reverse
biased) across the diode. The digital dis lay shows OL if the diode is good. Any other
readings indicate the diode is resistive or shorted (defective).
CAUTION
1. Using Resistance, Continuity, Diode or Ca acitance function in a live circuit will
roduce false results and may damage the meter. In many cases the sus ected
com onent(s) must be disconnected from the circuit to obtain an accurate
measurement reading.
2. When using Ca acitance function, discharge ca acitor(s) before making any
measurements. Large value ca acitors should be discharged through an a ro riate
resistance load

8

9
Temperature function (Model 197 only)
Defaults at oC ( elsius) readings. Press SELECT button momentarily and release to
select oF (Fahrenheit) readings. Inputs are made through the test leads terminals. Be
sure to insert the banana plug type-K temperature bead probe Bkp60 with correct
polarities. You can also use a plug adapter Bkb32 (Optional purchase) with
banana pins to type-K socket to adapt other type-K standard mini plug temperature
probes.