Specification

Ranges (selected automatically)

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1.999, 19.99, 199.9 Ohms

Increment

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0.001, 0.01, 0.1 Ohms

Accuracy

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±0.1% of range

Zero offset

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±0.001 Ohms

Test current

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5mA Max

Test power

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5mW Max

Temp. drift

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0.1%°C of lowest range

Operating range

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5 to 35°C

Display

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3½ digit L.C.D.

Weight

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480 gms.

Dimensions

Approximate weight (instrument only)

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170 gms.

(instrument incase with batteries

leads M21019A)

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510 gms.

Approximate dimensions: Instrument

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H: 15cm, w: 8.Ocm, D: 3.8cm

Case ...

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H: 15.5cm, w: 14.5cm, D: 4.5cm

Battery

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9v (PP3 MN 1604 or equiv.)

1EC6F22

This battery operated digital resistance meter is designed to meas-

ure accurately low resistance from 0.001 ohm to 200 ohms, using

four-terminal measurment network which eliminates errors caused

by test lead resistance.

The instrument is small and light weight and is used easily

in one hand with only an ON button to operate. It has auto-ranging,

auto-decimal point and auto-powerdown after three minutes. It has

long battery life and is powered by a single PP3 or MN 1604 bat-

tery

Some typical applications

Relay . switch and connector contacts . PC-plated through holes .

PC track resistance . Transformer and motor windings . Ring circuit

testing . Earth conductor continuity . Wire-wrapped and solder joints

. RFI sheilding and coil resistance.

Packing list

SET COMPRISING:

ONE Milli-ohmeter M210..............................................M210

ONE Set standard spring clip connectors and leads...........M210/9A

ONE Instructions leaflet

OPTIONAL EXTRAS:

ONE Ever-ready case

SET Probe and contact connectors...............................M210/9B

Milli-ohneter being used to test a reed relay.

Note the ease of connection.

Description

The Measuring Circuit

In the four-terminal “Kelvin” configuration four wires are used to connect

the circuit under test to the instruments.

One pair of wires carries current generated by the instrument, the other

pair connect to the voltage-measuring circuit.

The current circuit is low impedance, the voltage circuit high impedance.

When connected a current flows through the component or circuit under

test and the voltage drop across the test points is measured.