Gossen MetraWatt METRAOHM 413 Bedienungsanleitung

3-348-810-03

6/7.15

GMC-I Messtechnik GmbH

METRAOHM⏐413

Low-Resistance Ohmmeter

Applications

The METRAOHM 413 is a battery powered instrument for the mea-

surement of low-value resistances in electrical systems.

Large protective conductor, earthing, equipotential bonding and

lightning protection systems can also be tested quickly and safely

with the METRAOHM 413. Resistance is measured between

reference earth (e.g. an equipotential bonding strip) and any

desired points to this end.

A measuring current of 200 mA and automatic functions assure

reliable measuring results.

– Adjustment of shunts in instrumentation applications

– Testing of electrical connections at busbars in open-pit

mining, in industry and in household applications

– Testing of cable resistance, wiring, shunt resistors in printed

circuit boards and thick-film circuits

– Measurement of contact resistance in relays, power

contactors and load interrupters

– Measurement of fuse resistance, as well as cable resistance in

heavy current circuits

– Testing of coil resistance in transformers, coils, small motors

etc.

Description

Easy Operation

Operation is very easy. Measurement cables of almost any length

can be used thanks to the offset balancing function.

Measurement polarity can be reversed, and both measured

values are stored to memory for subsequent comparison.

Resultant deviations in the measuring results (e.g. possible

galvanic voltages) can thus be recognized.

Offset Balancing

Offset balancing compensates for measurement cable resistance.

The offset value is saved to memory and is utilized for all future

measurements until balancing is performed once again. The value

remains in memory, even after the measuring instrument has

been switched off.

A variety of measurement cables with resistances of up to 3.5 Ω

can be used.

Protection Against Operator Error

The METRAOHM 413 is protected against inadvertent connection

to devices under test with fault voltages of up to 500 V by means

of protective devices.

Interference Voltage Warning

Interference voltage is indicated visually with a red LED, and

audibly with an acoustic warning signal. The voltage value is

displayed at the LCD as well, as long as the test probe makes

contact.

• Handy measuring instrument per VDE 0413 part 4 / EN 61557-1 / -4

•Large measuring range from 0.01 to 1999 kΩ

• Measurement cable zero balancing

•Compact and durable

For rugged service calls and laboratory use

•Overvoltage protection

Protects the instrument in the event of inadvertent connection

to mains voltage

• Indication of interference voltage

• IP 65 protection

METRAOHM⏐413

Low-Resistance Ohmmeter

2GMC-I Messtechnik GmbH

Applicable Regulations and Standards

Characteristic Values

Measuring ranges 10 Ω (Lo-Ω) Auflösung: 0,01 Ω

100, 2000 Ω Auflösung: 0,1 ... 1 Ω

20, 200, 2000 k

Auflösung: 0,01 ... 1 kΩ

Accuracy ±(1.5% rdg. + 4 digits) at 20 °C

Measuring current 10 Ω (Lo-Ω)-range: 200 mA

100 Ω-Bereich: 20 mA

further ranges: 1 μA ... 20 mA

Open-circuit voltage > 4 V

Display

Digital display LCD, 10 mm high, 3½ places,

with background illumination

Overflow indication by 0L

Battery status indicated by 2 segments on the LCD

External voltage

display for voltages as from approx. 15 V:

Alternately, red LED VOLT blinks and

symbol – v– appears on the LCD.

Numerical display of voltage level, in the

case of AC voltage, symbol ~ for AC is

additionally shown.

Between 15 V and 400 V an intermittent

acoustic signal sounds as a warning signal

Ambient Conditions

Reference temp. 20 °C

Storage temperature –10 °C ... +70 °C

Operating temp. –10 °C ... +50 °C

Power Supply

Battery 9 volt block battery per IEC 6 LR 61 AlMn,

automatic shutdown after 20 seconds of

inactivity

Battery Saving Circuit

The measuring instrument is switched off automatically if none of

the keys are activated for a period of approximately 20 seconds.

Electrical Safety

Safety class II per IEC 61010-1

Test voltage 3.2 kV

Measuring category CAT II 600 V, CAT III 300 V

Overvoltage

protection reversible by means of semiconductor at

nominal voltages of up to 400 V,

from 400 to 500 V with special fuse

(can only be replaced at the factory)

Electromagnetic Compatibility (EMC)

Interference emission

EN 61326-1:2006 class B

interference immunity

EN 61326-1:2006

Mechanical Design

Housing impact resistant ABS with unbreakable

display cover

Protection housing: IP 65

Dimensions 60 x 230 x 40 mm

Weight 180 g (including battery)

Standard Equipment

1METRAOHM 413 low-resistance ohmmeter

1 plug-in measuring cable

1 9 volt block battery per IEC 6 LR61

1 operating instructions

IEC 61010–1

DIN EN 61010–1

VDE 0411 Part 1

Safety requirements for electrical equipment

for measurement, control and laboratory use

Part 1: General requirements

EN 61557-1 / -4 /

VDE 0413 Part 4 Ohmmeters

EN 60529

VDE 0470-1

Test instruments and test procedures

Protection provided by enclosures (IP code)

DIN EN 61326-1

VDE 0843-20-1

Electrical equipment for measurement, control and

laboratory use – EMC requirements –

Part 1: General requirements

GMC-I Messtechnik GmbH 3

METRAOHM⏐413

Low-Resistance Ohmmeter

Accessories

TR25 Reel with Measurement Cable

Reel with 25 m

measurement cable.

Cable ends are equipped with banana plugs.

TR50 Drum with Measurement

Cable

50 m measurement cable

coiled onto a plastic drum.

Connection to the inside

end of the cable is made

possible with a socket inte-

grated into the drum. The

other end is equipped with

a banana plug. The drum

axle with handle can be

removed for space saving

storage.

Order Information

For additional information on accessories, please refer to:

• the relevant datasheet or our „Measuring Instruments and

Testers“ catalog

• our website www.gossenmetrawatt.com

Designation Type Article Number

Low-Resistance Ohmmeter METRAOHM 413 M630A

Reel with 25 m Measurement Cable

TR25 GTZ3303000R0001

Drum with 50 m Measurement Cable

TR50 GTY1040014E34

Edited in Germany • Subject to change without notice • A pdf version is available on the internet

METRAOHM⏐413

Low-Resistance Ohmmeter

GMC-I Messtechnik GmbH

Südwestpark 15

90449 Nürnberg • Germany

PHone +49 911 8602-111

Fax +49 911 8602-777

E-Mail [email protected]

www.gossenmetrawatt.com

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