Brymen BM236R Manuel utilisateur

USER'S

MANUAL

BM236R

BM237R

BM239R

1) SAFETY

This manual contains information and warnings that must be followed for operating the meter

safely and maintaining the meter in a safe operating condition. If the meter is used in a

manner not specified by the manufacturer, the protection provided by the meter may be

impaired.

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.

Keep your hands/fingers behind the hand/finger barriers (of the meter and the test probe

assembly, where applicable) that indicate the limits of safe access of the hand-held parts

during measurements. Inspect lead wires, connectors, and probes for damaged insulation or

exposed metal before using the meter. If any defects are found, replace them immediately.

Only use the probe assembly provided with the meter or a UL Listed Probe Assembly to the

same meter ratings or better.

IEC 61010-031 requires exposed conductive test probe tips to be ≤4mm for CAT III & CAT

IV ratings. Refer to the category markings on your probe assemblies as well as on the add-

on accessories (like detachable Caps or Alligator Clips), if any, for applicable rating changes.

Observe proper safety precautions when working with voltages above 33 Vrms, 46.7 Vpeak

or 70 VDC. These voltage levels pose a potential shock hazard to the user. Before and after

hazardous voltage measurements, check the voltage function on a known source such as

line voltage to determine proper meter functioning.

CAUTION

Disconnect the test leads from the test points before changing functions.

International Electrical Symbols

Marking of Electrical and Electronic Equipment (EEE). Do not dispose of this

product as unsorted municipal waste. Contact a qualified recycler

Caution! Refer to the explanation in this Manual

Caution! Possibility of electric shock

Earth (Ground)

Meter protected throughout by Double Insulation or Reinforced insulation

Fuse

Direct Current (DC)

Alternating Current (AC)

3Three-phase Alternating Current

Brief Information about Measurement Categories

Measurement Category IV is applicable to test and measuring circuits connected at the

source of the building’s low-voltage MAINS installation. Examples are measurements on

devices installed before the main fuse or circuit breaker in the building installation.

Measurement Category III is applicable to test and measuring circuits connected to the

distribution part of the building’s low-voltage MAINS installation. Examples are

measurements on distribution boards (including secondary meters), 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 such as stationary motors with

permanent connection to the fixed installation.

Measurement Category II is applicable to test and measuring circuits connected directly to

utilization points (socket outlets and similar points) of the low-voltage MAINS installation.

Examples are measurements on MAINS CIRCUITS of household appliances, portable tools

and similar equipment.

2) CENELEC DIRECTIVES

The instruments conform to CENELEC Low-voltage directive 2014/35/EC,

Electromagnetic compatibility directive 2014/30/EU and RoHS directive 2011/65/EU.

3) 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) 3-5/6 digits 6000 counts

LCD display

2) Push-buttons for special

functions & features

3) Selector to turn the Power

On or Off and Select a

function

4) Input Jack for 10A (20A for

30sec) current function

5) Input Jack for all functions

EXCEPT 10A current

function

6) Common (Ground

reference) Input Jack for all

functions

7) Additional input Jack for

Phase Rotation function only

True RMS

RMS (Root-Mean-Square) is a term used to describe the effective or equivalent DC value of

an AC signal. True RMS is the term which identifies a DMM that responds accurately to the

effective RMS value regardless of the waveforms such as: square, sawtooth, triangle, pulse

trains, spikes, as well as distorted waveforms with the presence of harmonics. Harmonics

may cause :

1)Overheated transformers, generators and motors to burn out faster than normal

2)Circuit breakers to trip prematurely

3)Fuses to blow

4)Neutrals to overheat due to the triplen harmonics present on the neutral

5)Bus bars and electrical panels to vibrate

Crest Factor

Crest Factor is the ratio of the Crest (instantaneous peak) value to the True RMS value, and

is commonly used to define the dynamic range of a True RMS DMM. A pure sinusoidal

waveform has a Crest Factor of 1.414. A badly distorted sinusoidal waveform normally has a

much higher Crest Factor.

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.

AutoV (LoZ) mode

AutoV automatically selects measurement function of DCV or ACV, based on their input

levels via the test leads. The input also provides a low ramp-up impedance (LoZ) to drain

ghost voltages*.

●With no input, the meter displays “- - - -” when it is ready.

●When a signal above the voltage threshold of 1V DC or AC up to the rated 1000V is

present, the meter displays the voltage value in appropriate DC or AC, whichever larger in

peak magnitude.

Note:

*Ghost-voltage Buster: Ghost-voltages are unwanted stray signals coupled from adjacent

hard signals, which confuse common multimeter voltage measurements. The AutoV mode

provides low (ramp-up) input impedance (approx. 2.1kΩ at low voltage) to drain ghost

voltages leaving mainly hard signal values on meter readings. It is an invaluable feature for

precise indication of hard signals, such as distinguishing between hot and open wires (to

ground) in electrical installation applications.

*Only HOLD, EF & Backlight push-button features are available in AutoV mode.

WARNING:

AutoV mode input impedance increases abruptly from initial 2.1kΩ to a few hundred kΩ’s

on high voltage hard signals. “LoZ” displays on the LCD to remind the users of being in such

low impedance mode. Peak initial load current, while probing 1000VAC for example, can be

up to 673mA (1000V x 1.414 / 2.1kΩ), decreasing abruptly to approx. 2.4mA (1000V x 1.414

/ 580kΩ) within a fraction of a second. Do not use AutoV mode on circuits that could be

damaged by such low input impedance. Instead, use rotary selector or high input

impedance voltage modes to minimize loading for such circuits.

ACV, DCV & VFD-ACV functions

Press the SELECT button momentarily to select the subject functions in sequence. Last

selection will be saved as power up default for repeat measurement convenience.

Note:

VFD-ACV and the associated Hz are equipped with digital low-pass filter (DSP), and are

capable of handling VFD (Variable Frequency Drives) signals for fundamental V & Hz

readings. It also improves ACV and Hz reading stability when being used in most noisy

electrical environments.

Line Frequency functions (Models 237R & 239R only)

Press the Hz push-button momentarily to toggle Hz function. It is only available to Voltage

and Current related ranges.

Input sensitivity varies automatically with the function range selected while activating the Hz

function. 6V function range has the highest and the 1000V range has the lowest. When

activated under DCV, ACV or VFD-ACV voltage function, the trigger voltage range will be

displayed right before starting the Hz readings. Press momentarily the RANGE button can

manually select another trigger voltage range (not available to current ranges). It is

recommended to first measure the signal voltage (or current) level and activate Hz function

in that range to get the most appropriate trigger level. If the Hz reading becomes unstable,

select lower sensitivity to avoid electrical noise. If the reading shows zero, select higher

sensitivity.

Resistance, BeepLitTM Continuity & Diode;

Capacitance (Models 237R & 239R only)

Press the SELECT button momentarily to select the subject functions in sequence. Last

selection will be saved as power up default for repeat measurement convenience.

BeepLitTM Continuity function is having improved convenience for checking wiring

connections and operation of switches. A continuous beep tone together with flashing

display backlight indicate a complete wire. Such audible and visible indications improve

continuity readabilities in noisy working environments.

In Diode function, the 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).

CAUTION

Using resistance and continuity 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 reading.

CAUTION

Discharge capacitors before making any measurement. Large value capacitors should be

discharged through an appropriate resistance load.

ACmV & DCmV; Temperature oC & oF (Model 239R only)

Press the SELECT button momentarily to select the subject functions in sequence. Last

selection will be saved as power up default for repeat measurement convenience.

Note: 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 standard type-K mini plug temperature probes.

Ce manuel convient aux modèles suivants

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