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MX 430B

1 - INTRODUCTION1 - INTRODUCTION

1 - INTRODUCTION

1.1 GENERAL1.1 GENERAL

1.1 GENERAL

This 40 000 W / V analog multimeter with its wide range of measurement

capabilities is perfectly adapted to the needs of electrical and electronic

engineer. A single combined range and function rotary switch will make this

instrument easy to use.

It has a good insulation (3 kV) and has no metallic protruding parts. Of rugged

construction it is handy to carry. As well as rubber shock absorber surround

or a carrying case many accessories are available on request. The instrument

is fitted with a folding stand.

1.2 PARTICULARITIES1.2 PARTICULARITIES

1.2 PARTICULARITIES

This multimeter will support an accidental short overload of 240 V AC on all

ranges without other damage than blown fuses. The protection of current

ranges ( < 15 mA) and 50 - 150 mV DC relies on non linear components. All

volts ranges are protectec against mains accidental ocerloads through the

use of generously rated components. The protection of current ranges

(> 15 mA) is obtained through fuses. One of them has a high current cutting-

off power 10 A/80 kA in the common.

Fuses and batteries are easily accessible at the back of the case. A linear

ohmmeter gives constant precision and resolution at low resistance i. e. :

ranges 0 - 50 W and 0 - 500 W .

1.3 GENERAL INSTRUCTIONS1.3 GENERAL INSTRUCTIONS

1.3 GENERAL INSTRUCTIONS

1.1.

1. If the order of a measurement is not known, start measuring with

the meter set to its highest range ; turn down later if necessary.

Highest accuracy is obtained when the deviation is greatest.

2.2.

2. Before making a measurement, check that the pointer is at zero.

If not, adjust with the screw situated at the rear.

3.3.

3. Make sure that the function switch is correctly set before making

a measurement, e.g. do not try to measure volts when the function

switch is at ohms or at mA.

Metrix MX 430B User Manual

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