Amprobe PM53A Bedienungsanleitung

PM53A

Automatic Pocket Meter

Users Manual

•Mode d’ emploi

•Bedienungshandbuch

•Manual d’Uso

•Manual de uso

PN 2728858

July 2006

English

SELECT

Press for 2 seconds

to turn meter on.

PM53A

ALCD display

BSELECT-button to select alternate functions and turn the power off and on.

CPermanently attached red test lead for positive (+) polarity and black test lead for ground

reference (-)

PM53A Pocket Meter

Contents

Introduction....................................................................................................................2

Safety Information..........................................................................................................2

Symbols Used in this Manual ......................................................................................3

Turning the Meter On and Off .........................................................................................3

Making Measurements ...................................................................................................4

AutoTectTM Mode..........................................................................................................4

Continuity, Audible With Symbolic Display..................................................................5

Electric Field EF-Detection, VolTect..........................................................................5

Voltage.........................................................................................................................7

Resistance ...................................................................................................................7

Frequency ....................................................................................................................7

Capacitance .................................................................................................................7

Product Maintenance......................................................................................................7

Maintenance ................................................................................................................7

Cleaning.......................................................................................................................7

Troubleshooting...........................................................................................................8

Battery Replacement....................................................................................................8

Limited Warranty and Limitation of Liability ...................................................................9

Repair .............................................................................................................................9

Specifications ...............................................................................................................10

Introduction

This unique meter has a full complement of features in a compact package only 3/8 inch deep and

weighing less than 3 oz. The essential shirt-pocket size meter for portability, Model PM53A is fully

autoranging and has an oversized, easy-to-read digital display. It offers the AutoTect™ feature that

guides the meter to display AC volts, DC volts or resistance based on what you are measuring. Also

offered is VolTect™, a built-in non-contact voltage detector of AC voltages. Although very small, this

meter is fully UL safety rated to CAT III levels. The AmprobePM53A includes measurement extras

such as capacitance, frequency and continuity plus safety extras such as transient protection to 4 kV

and overload protection to either 450 V.

Safety Information

•The PM53A Digital Multimeter is certified for cULus and EN61010-1:2001; CAT II 450 V, CAT III

300 V, class 2 and

pollution deg. 2.

•This instrument is EN61010-1 certified for Installation Category II

(450 V). It may only be used to make measurements on energy limited circuits within equipment

and not directly connected to mains.

•This instrument is EN61010-1 certified for Installation Category III

(300 V). It is recommended for use with local level power distribution, appliances, portable

equipment, etc., where only smaller transient overvoltages may occur, and not for primary supply

lines, overhead lines and cable systems.

•Do not exceed the maximum overload limits per function (see specifications) nor the limits

marked on the instrument itself. Never apply more than 450 V between the test lead and earth

ground.

•Inspect the DMM, test leads and accessories before every use. Do not use any damaged part.

•Never ground yourself when taking measurements. Do not touch exposed circuit elements or test

probe tips.

•Do not operate the instrument in an explosive atmosphere.

•Exercise extreme caution when: measuring voltage >20 V // current >10 mA // AC power line with

inductive loads // AC power line during electrical storms // current, when the fuse blows in a

circuit with open circuit voltage > 450 V // servicing CRT equipment.

•Remove test leads from circuit before opening the case.

•Always measure current in series with the load – NEVER ACROSS a voltage source.

Symbols Used in this Manual

N Battery WRefer to the manual

TDouble insulated XDangerous Voltage

FDirect Current JEarth Ground

BAlternating Current RAudible tone

PComplies with EU directives > Underwriter Laboratories, Inc.

IFuse

Turning the Meter On and Off

•Press the SELECT button for approximately 2 seconds to turn the meter on.

•To turn the meter off, press the SELECT button until the display goes blank.

Making Measurements

All measurements described in this manual use the Red test lead for positive (+) polarity and Black

test lead for Ground reference (-) unless otherwise specified

AutoTectmode is the default function when the meter is first turned on. Press the SELECT button

momentarily to select and step through the functions:

•AutoTect

•Continuity

•EF

•ACV

•DCV

•Ω

•Hz

•Cx

•AutoTect

AutoTectTMode

The AutoTectfeature automatically selects measurement function of

V dc, V ac, 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 6 MΩis present, the meter displays the resistance

value.

●When a signal above the threshold of 1.2 V dc or 1.5 V ac up to the rated 450 V is present, the

meter displays the appropriate voltage value in dc or ac, whichever larger in peak magnitude.

●The AutoTecttest mode input impedance is lower than most digital multimeters and LoZ is

displayed on the LCD. This may cause reading errors if the circuit being measured is sensitive to

the meter input impedance. Input impedance is approximately 160 Ω, helping determine if

voltage is from leakage (so-called “ghost” voltages) or a hard connection. “Ghost” voltages will

be zeroed out by the low input impedance.

●Overload-Alert Feature

When above rated 450 V is present, the meter displays OL with a warning beep tone. Disconnect

the test leads from the signal immediately to avoid hazards.

•Range-Lock Feature

When a measurement reading is displayed in the AutoTectmode, press the SELECT button

momentarily to lock the function-range. The LCD annunciator Auto turns off. Range-lock can

speed up repetitive measurements. Press the SELECT button momentarily again to return to

AutoTectmode.

When making resistance measurements in AutoTectmode, an unexpected display of voltage

readings alerts you that the circuit under test is still energized.

Continuity, Audible With Symbolic Display

With Auto on the LCD, press the SELECT button once to select Continuity function. The meter will

show a symbolic open-switch display . A continuous beep tone and a symbolic closed-switch

indicates a closed circuit. Continuity is used for checking wiring connections and operation of

switches.

Electric Field EF-Detection, VolTect

With Auto displayed on the LCD, press the SELECT button momentarily 2 times to select the EF-

Detection feature. The meter displays EF. Signal strength is indicated as a series of bargraph

segments on the display and variable beep tones. See the VolTectspecifications later in this

manual for a complete description of the bar graph indicators.

•Voltect

An antenna is located at the top left corner of the meter, which detects electric field surrounding

current-carrying conductors. It is ideal for tracing live wiring connections, locating wiring

breakage and to distinguish between live or earth connections.

•Probe-Contact EF-Detection

For more precise indication of live wires, such as distinguishing between live and ground

sockets, use the V ac manual function selection for direct contact voltage measurements.

•

Note

For Maximum sensitivity, hold the meter away from the VolTect



corner.

TCEL

ES TCEL

PM53A

Voltage

With Auto on the LCD, press the SELECT button 3 times to select V ac function. The meter displays

LoZBVwhen it is ready.This function is auto-ranging.

With Auto on the LCD, press the SELECT button 4 times to select V dc. The meter displays LoZ V

when it is ready. This function is auto-ranging.

Resistance

With Auto on the LCD, press the SELECT button 5 times to select resistance function, The meter

displays MΩwhen it is ready. This function is auto-ranging.

Frequency

With Auto on the LCD, press the SELECT button 6 times to select frequency function, The meter

displays Hz when it is ready. This function is auto-ranging.

Capacitance

With Auto on the LCD, press the SELECT button 7 times to select capacitance function, The meter

displays nF when it is ready. This function is auto-ranging.

Return to Auto

Press the SELECT button 8 times to return to AutoTecttest mode.

Product Maintenance

Maintenance

Do not attempt to repair this meter. It contains no user serviceable parts. Repair or servicing should

only be performed by qualified personnel.

Cleaning

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 battery and store it

separately

Troubleshooting

If the instrument fails to operate, check battery, leads, and replace battery as necessary. Double-

check operating procedure as described earlier in this manual.

If the display locks up, press the SELECT button for approximately 6 seconds to reset the

microprocessor.

If the instrument’s voltage-resistance input is subjected to high voltage transient (mostly caused by

lightning or switching surge to your system) by accident or abnormal conditions of operation, the

series fusible resistors will react (become high impedance) like fuses to protect the user and the

instrument. Most measuring functions through this input 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.

Battery Replacement

If the meter starts up with persistent resetting display or with low battery icon Nturns on, replace

the battery. The meter uses one 3 V coin battery IEC-CR2032.

To replace the battery

1. Turn off the meter.

2. Disconnect the test leads from live circuits.

3. Loosen the screwon the case bottom.

4. Lift the end of the case bottom nearest the input test leads until it unsnaps from the case top.

Replace the battery cover and tighten the screw. Recycle the battery using approved methods.

5. Replace the battery. Observe battery polarities with positive (+) faces up (towards the case

bottom). Replace the case bottom, and ensure that the snap on the case top (near the LCD side)

is engaged.

6. Replace and tighten the screw.

XWWARNING

To avoid electrical shock, disconnect test leads from live circuits before opening

the case. Do not operate with open case.

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