Brymen TBM811 Bedienungsanleitung

USER'S MANUAL

TBM811, TBM812, TBM829

TBM811XEX, TBM812XEX, TBM525

1) 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.

The meter protection rating, against the users, is double insulation per IEC61010-1 2nd Ed.,

EN61010-1 2nd Ed., UL61010-1 2nd Ed. and CAN/CSA C22.2 No. 61010.1-0.92 to

Category IV 1000 Volts AC & DC.

TBM811, TBM812 & TBM829 Terminals (to COM) measurement category:

V : Category IV 1000 Volts AC & DC

mAA : Category IV 600 Volts AC and 300 Volts DC

A : Category IV 600 Volts AC and 300 Volts DC

TBM811XEX, TBM812XEX & TBM525 Terminals (to COM) measurement category:

V / mAA / A : Category IV 1000 Volts AC & DC

Per IEC61010-1 2nd Ed. (2001) Measurement Category

Measurement Category IV (CAT IV) is for measurements performed at the source of the

low-voltage installation. Examples are electricity meters and measurements on primary

overcurrent protection devices and ripple control units.

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, connectors, and probes for damaged insulation or

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

immediately. Do not measure any current that exceeds the current rating of the protection

fuse. Do not attempt a current measurement to any circuit where the open circuit voltage is

above the protection fuse voltage rating. Suspected open circuit voltage should be checked

with voltage functions. Never attempt a voltage measurement with the test lead inserted into

the A/mA or A input jack. Only replace the blown fuse with the proper rating as specified in

this manual.

CAUTION

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

instrument to the highest range and work downward for an unknown value when using

manual ranging mode.

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

2) CENELEC DIRECTIVES

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

Electromagnetic compatibility directive 2004/108/EC

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.

Analog bar-graph

The analog bar graph provides a visual indication of measurement like a traditional analog

meter needle. It is excellent in detecting faulty contacts, identifying potentiometer clicks, and

indicating signal spikes during adjustments.

1) 4 digits 9999 counts dual

displays

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) Common (Ground reference)

Input Jack for all functions

6) Input Jack for all functions

EXCEPT current (A, mA, A)

functions

7) Input Jack for milli-amp and

micro-amp current functions

Average sensing RMS calibrated

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

of an AC signal. Most digital multimeters use average sensing RMS calibrated technique to

measure RMS values of AC signals. This technique is to obtain the average value by

rectifying and filtering the AC signal. The average value is then scaled upward (calibrated)

to read the RMS value of a sine wave. In measuring pure sinusoidal waveform, this

technique is fast, accurate and cost effective. In measuring non-sinusoidal waveforms,

however, significant errors can be introduced because of different scaling factors relating

average to RMS values.

True RMS

True RMS is a 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 1.4. 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.

AutoCheckTM mode (TBM525 & TBM829 only)

This innovative AutoCheckTM feature automatically selects measurement function of DCV,

ACV or Resistance () based on the input via the test leads.

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

●With no voltage signal but a resistance below 60Mis present, the meter displays the

resistance value. When below “Audible Threshold“ is present, the meter further gives a

continuity beep tone.

●When a signal above the threshold of 1.5V DC or 3V 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:

*Range-Lock and Function-Lock Feature: When a measurement reading is being

displayed in AutoCheckTM mode, press the RANGE or SELECT button momentarily 1 time

can lock the range or function it was in. Press the button momentarily repeatedly to step

through the ranges or functions.

*As Hazardous-Alert: When making resistance measurements in AutoCheckTM mode, an

unexpected display of voltage readings alerts you that the object under test is being

energized.

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

hard signals, which confuse common multimeter voltage measurements. Our AutoCheckTM

mode provides low (ramp-up) input impedance (approx. 3kΩ 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.

WARNING:

AutoCheckTM mode input impedance increases abruptly from initial 3kΩ 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 471mA (1000V x 1.414 / 3kΩ), decreasing abruptly to approx. 3.1mA

(1000V x 1.414 / 460kΩ) within a fraction of a second. Do not use AutoCheckTM 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.

dBm +Hz (TBM829 only), Hz +ACV, ACV +Hz 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: Hz Input sensitivity varies automatically with voltage (current function alike) range

selected. 1V range has the highest and the 1000V range has the lowest. Auto-ranging

measurements normally set the most appropriate trigger level. You can also press the

RANGE button momentarily to select another trigger level (voltage range) manually. If the

Hz reading becomes unstable, select higher voltage range to avoid electrical noise. If the

reading shows zero, select lower voltage range.

Note: In dBm +Hz function, power up default reference impedance will be displayed for 1

second before displaying the dBm readings. Press dBm-(RANGE) button momentary to

select different reference impedance of 4, 8, 16, 32, 50, 75, 93, 110, 125, 135, 150, 200,

250, 300, 500, 600, 800, 900, 1000, up to 1200. Last selection will be saved as power up

default for repeat measurement convenience. Manual trigger level selection on Hz reading

is not available.

DC+ACV +ACV (TBM525 & TBM829 only), DCV, DCV +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.

TBM525 & TBM829:

DCmV, DCmV +ACmV, DC+ACmV +ACmV, Logic-Level Hz & Duty%

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.

TBM822(XEX) & TBM821(XEX):

DCmV, DCmV +ACmV, Logic-Level Hz & Duty%

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.

ACmV +Hz, dBm +Hz (TBM829 only), Hz +ACmV 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.

nS Conductance (TBM525 & TBM829 only), Resistance, Continuity functions

Press the SELECT button momentarily to select the subject functions in sequence for

models 525, 521, 829 and 827. Last selection will be saved as power up default for repeat

measurement convenience. Direct rotary switch selection on Resistance and

Continuity functions for models 822 and 821.

Note:

Conductance is the inverse of Resistance, that is S=1/or nS=1/G. It virtually extends

the Resistance measurements to the order of Giga-Ohms for leakage measurements.

Continuity function is convenient for checking wiring connections and operation of

switches. A continuous beep tone indicates a complete wire.

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

Temperature functions (TBM525 & TBM829 only)

Press SELECT button momentarily to toggle between C and F readings. For Dual

Channel Temperature function models 829 & 525, press T1-T2 (RANGE) button

momentarily can select T1,T2,T1 +T2 or T1-T2 +T2 readings. 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.

Capacitance, Diode test 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.

CAUTION

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

discharged through an appropriate resistance load.

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