Metrix MX 430B, Руководство пользователя

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MX 430B
20
1 - INTRODUCTION 1 - INTRODUCTION 1 - INTRODUCTION 1 - INTRODUCTION 1 - INTRODUCTION
1.1 GENERAL 1.1 GENERAL
1.1 GENERAL 1.1 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 PARTICULARITIES 1.2 PARTICULARITIES
1.2 PARTICULARITIES 1.2 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 INSTRUCTIONS 1.3 GENERAL INSTRUCTIONS
1.3 GENERAL INSTRUCTIONS 1.3 GENERAL INSTRUCTIONS 1.3 GENERAL INSTRUCTIONS
1. 1. 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. 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. 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.