Brymen BM161s Manuel utilisateur

USER'S MANUAL

BM161s

BM162s

Versatile AC/DC

Clamp-on Multimeter

Series

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 meets the requirements for double insulation to IEC/UL/EN61010-1 Ed. 3.0,

IEC/EN61010-2-032 Ed. 3.0, IEC/EN61010-2-033 Ed. 1.0, IEC/UL/EN61010-031 Ed.

1.1 & CAN/CSA-C22.2 No. 61010-1-12 Ed. 3.0:

Category III 600 Volts ac and dc.

PER IEC61010 OVERVOLTAGE INSTALLATION CATEGORY

OVERVOLTAGE CATEGORY II

Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be

supplied from the fixed installation.

Note – Examples include household, office, and laboratory appliances.

OVERVOLTAGE CATEGORY III

Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installations.

Note – Examples include switches in the fixed installation and some equipment for

industrial use with permanent connection to the fixed installation.

OVERVOLTAGE CATEGORY IV

Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the

installation. Note – Examples include electricity meters and primary over-current

protection equipment.

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.

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 VDC or 30 VAC rms. These voltage levels pose a potential

shock hazard to the user.

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 CAT

III 600V or better.

This Clamp-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

! Caution ! Refer to the explanation in this Manual

Caution ! Risk of electric shock

Earth (Ground)

Double Insulation or Reinforced insulation

Fuse

AC--Alternating Current

DC--Direct Current

Application around and removal from hazardous live conductors is permitted

2) CENELEC Directives

The instruments conform to CENELEC Low-voltage directive 2006/95/EC and

Electromagnetic compatibility directive 2004/108/EC

3) PRODUCT DESCRIPTION

This user's manual uses only representative model(s) for illustrations. Please refer

specification details for function availability to each model.

1) Hall-effect Clamp Jaw for AC

& DC current electric field pick

2) Hand/Finger Barrier to

indicate the limits of safe access

of the meter during

measurement

3) Push-buttons for special

functions & features

4) Input Jack for all functions

EXCEPT non-invasive ACA &

DCA current functions

5) Common (Ground reference)

Input Jack for all functions

EXCEPT non-invasive ACA &

DCA current functions

6) Slide-switch Selector to turn

the power ON/OFF and Select a

function

7) 3-3/4 digits 4000 counts LCD

display

8) Jaw trigger for opening the

clamp jaw

9) Jaw center Indicators, at

where best ACA & DCA

accuracy is specified

4) OPERATION

CAUTION: Before and after hazardous voltage measurements, test the voltage

function on a known source such as line voltage to determine proper meter functioning.

DC Voltage and AC Voltage functions

Inputs are made through the test lead terminals.

Note: DC 400.0mV range is designed with 1000M high input impedance for least

current drain in measuring small signals, and can cope better with most commercially

available voltage output transducers/adapters. The non-zero display reading is normal

when the meter inputs are open circuit, which will not affect actual measurement

accuracy. The meter will show a close to zero reading when the inputs are shorted.

Open input is actually a floating condition, which is not a zero-volt-input condition.

Note: AC 400.0mV range selection is by RANGE button manually, and is specified from

AC 40mV & up for Model 161s and from AC 60mV & up for True RMS Model 162s.

ACA & DCA Current clamp-on function

Inputs are made through the clamp jaws for non-invasive ACA & DCA current

measurements.

CAUTION (Application and removal of the Clamp-on meter)

Press the jaw trigger and clamp the jaws around only one single conductor of a circuit

for load current measurement. Make sure the jaws are completely closed, or else it will

introduce measurement errors. Enclosing more than one conductor of a circuit will

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. The jaw arrow-mark indicates current flow direction on DCA positive

readings. For removal, press the jaw trigger and remove the jaws from the

conductor(s).

Note: In DCA measurements, hysteresis of the jaws (after measuring high DC currents)

may introduce non-zero residual readings. Relative Zero mode should be used to

offset the residual readings, if any, so as to get more accurate measurements.

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.

CAUTION

Do not measure above rated frequency (1kHz @ < 50A; 100Hz @ < 800A). In

measuring above rated frequency, the magnetic circuits may reach to a hazardous

temperature

 Resistance, and Continuity functions

Inputs are made through the test leads terminals. Slide-switch on defaults at . Press

SELECT button momentarily to select Continuity function which is convenient for

checking wiring connections and operation of switches. A continuous beep tone

indicates a complete wire.

CAUTION

Using Resistance, Continuity or Diode function in a live circuit will produce false results

and may damage the instrument. In many cases the suspected component must be

disconnected from the circuit to obtain an accurate measurement reading

Diode test function

Inputs are made through the test leads terminals. Slide-switch on defaults at . Press

SELECT button momentarily 2 times to select Diode test function. Normal forward

voltage drop (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 open diode (defective). Reverse the test

leads connections (reverse biased) across the diode. The digital display shows OL if

the diode is good. Any other readings indicate the diode is resistive or shorted

(defective).

Capacitance function

Inputs are made through the test leads terminals. Slide-switch on defaults at . Press

SELECT button momentarily 3 times to select Capacitance function. Relative zero

mode can be used to zero out the parasitic capacitance of the leads and the internal

protection circuitry of the meter when measuring low capacitance in the order of Pico

Farad (pF).

CAUTION

Discharge capacitors before making any measurement. Large value capacitors should

be discharged through an appropriate resistance load

HOLD

The Hold feature freezes the display for later viewing. Press the HOLD button

momentarily to toggle to the Hold feature. The annunciator “ ” turns on.

MAX

The max feature compares and displays the measured maximum value as fast as

30ms with auto-ranging capability. It allows the meter to capture in-rush currents in

current functions. Press and hold the MAX button for 1 second or more to toggle to

the max feature. The annunciators “MAX” and “ ” turn on.

Relative Zero mode

Relative Zero mode allows the user to offset the meter consecutive measurements

with the displaying reading as the reference value. The display will now show readings

relative to the stored reference value. That is, display = reading - stored value. Press

the button momentarily to toggle to the relative zero mode. The annunciator “ ”

turns on. The meter also enters manual ranging mode where available. The

annunciator “ ” turns off.

Manual or Auto-ranging

Press the RANGE button momentarily to select manual-ranging mode, and the meter

will remain in the range it was in, the LCD annunciator “ ” turns off. Press the

button momentarily again to step through the ranges. Press and hold the button for 1

second or more to resume auto-ranging mode.

Display Backlight (Model 162s only)

Press the SELECT button for 1 second or more to toggle the display backlight on and

off.

Auto Power Off (APO)

When the meter is on, the Auto Power Off (APO) feature will switch the meter to sleep

mode automatically after approximately 30 minutes of no slide-switch nor push button

operations to extend battery life. To wake up the meter from APO, press any

push-buttons momentarily or set the slide-switch to the OFF position and then slide

back on again. Always set the slide-switch to the OFF position manually when the

meter is not in use.

5) MAINTENANCE

WARNING

To avoid electrical shock, disconnect the meter from any circuit, remove the test leads

from the input jacks and turn OFF the meter before opening the case. Do not operate

with open case.

Trouble Shooting

If the instrument fails to operate, check batteries and test leads etc., and replace as

necessary. Double check operating procedure as described in this user’s manual

If the instrument voltage-resistance input terminal has subjected to high voltage

transient (caused by lightning or switching surge to the system) by accident or

abnormal conditions of operation, the series fusible resistors will be blown off (become

high impedance) like fuses to protect the user and the instrument. Most measuring

functions through this terminal will then be open circuit. The series fusible resistors and

the spark gaps should then be replaced by qualified technician. Refer to the LIMITED

WARRANTY section for obtaining warranty or repairing service.

Cleaning and Storage

Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives

or solvents. If the meter is not to be used for periods of longer than 60 days, remove

the batteries and store them separately

Battery replacement

The meter uses standard 1.5V AAA Size (NEDA 24G or IEC R03) battery X 2; or 1.5V

AAA Size (NEDA 24A or IEC LR03) alkaline battery X 2.

Loosen the 2 captive screws from the battery cover case. Lift the battery cover case.

Replace the batteries. Replace battery cover case. Re-fasten the screws.

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