Sanwa RD700 Bedienungsanleitung

DRAWING No. RD700/701 06-1404 2040 6010

INSTRUCTION MANUAL

RD700

RD701

DIGITAL MULTIMETER

DRAWING No. RD700/701 06-1404 2040 6010

CONTENTS

[1] SAFETY PRECAUTIONS

*Before use, read the following safety precautions.

1-1 Explanation of Warning Symbols …………………………001

1-2 Warning Instruction for Safe Use …………………………001

1-3 Overload protections ………………………………………002

[2] APPLICATION AND FEATURES……………………………003

[3] NAME OF FUNCTION ………………………………………004

[4] DESCRIPTION OF FUNCTIONS

4-1 Function Switch ……………………………………………005

4-2 Auto Power Off ……………………………………………005

4-3 Low Battery Indication ……………………………………005

4-4 Measurement Function Select: SELECT ………………005

4-5 Range Hold: RANGE ………………………………………006

4-6 Data Hold: HOLD …………………………………………006

4-7 Max Hold: MAX …………………………………………006

4-8 Relative Mode: REL ……………………………………006

4-9 Mis-insertion alarm for current function: ALARM ………006

4-10 Words ………………………………………………………006

[5] MEASUREMENT PROCEDURE

5-1 Start-Up Inspection …………………………………………009

5-2 Voltage measurement / Frequency measurement ……010

5-3 Adapter measurement ……………………………………012

5-4 Resistance measurement and Capacitance measurement /

Testing Diode / Checking Continuity ……………………014

5-5 Temperature Measurement ………………………………018

5-6 Current Measurement ……………………………………019

[6] MAINTENANCE

6-1 Maintenance and Inspection ………………………………021

6-2 Calibration …………………………………………………021

6-3 Battery and Fuse Replacement …………………………021

6-4 Storage ………………………………………………………022

DRAWING No. RD700/701 06-1404 2040 6010

[7] AFTER-SALE SERVICE

7-1 Warranty and Provision ……………………………………023

7-2 Repair ………………………………………………………023

7-3 Sanwa web site ……………………………………………024

[8] SPECIFICATIONS

8-1 General Specification ………………………………………025

8-2 Measurement Range and Accuracy………………………028

DRAWING No. RD700/701 06-1404 2040 6010

To ensure that the meter is used safely, be sure to observe the

instruction when using the instrument.

1. Never use meter on the electric circuit that exceed 6 kVA.

2. Never apply an input signal exceeding the maximum rating input

value.

3. Never use meter if the meter or test leads are damaged or broken.

4. Pay special attention when measuring the voltage of AC 33

Vrms (46.7 V peak) or DC 70 V or and over avoid injury.

—1 —

[1] SAFETY PRECAUTIONS

*Before use, read the following safety precautions.

This instruction manual explains how to use your new digital

multimeter RD700 or RD701 safely. Before use, please read this

manual thoroughly. After reading it, keep it together with the product

for reference to it when necessary. The instruction given under the

heading of “ WARNING” must be followed to prevent accidental

burn or electrical shock.

1-1 Explanation of Warning Symbols

The meaning of the symbols used in this manual and attached to

the product is as follows.

: Very important instruction for safe use.

The warning messages are intended to prevent accidents to

operating personnel such as burn and electrical shock.

The caution messages are intended to prevent damage to the

instrument.

: Dangerous voltage (Take care not to get an electric shock

in voltage measurement.)

: Ground (Allowable applied voltage range between the input

terminal and earth.)

: Direct current (DC)

: Alternating current (AC)

: Fuse

: Double insulation (Protection Class )

1-2 Warning Instruction for Safe Use

WARNING

DRAWING No. RD700/701 06-1404 2040 6010

ADP

/Ω

/ / /

/TEMP

/Hz

•

COM

DC•AC 400 mA

—2 —

20 VAC rmsHz

µA•mA

Ω• •

• TEMP

0.63 A/500 VFuse

IR 50 kA

DC•AC 10 A

(10 A continuous)

ADP

Functions Input

terminals

Maximum rating

input value

Maximum overload

protection input

1-3 Overload protections

DC•AC 1000 V

DC•AC 400 mV

1050 Vrms, 1450 Vpeak

600 VDC/AC rms

Voltage and

Current input

prohibited

µA / mA

•

COM

•

COM

12.5 A/500 VFuse

IR 20 kA

15. Never use meter for measuring the line connected with

equipment (i.e. motors) that generates induced or surge

voltage since it may exceed the maximum allowable voltage.

16. Never use uncased meter.

17. Be sure to use a fuse of the specified rating or type. Never use a

substitute of the fuse or never make a short circuit of the fuse.

18. When connect and disconnecting the test leads, connecting

the ground lead (black one) first. When disconnecting them,

theground leadmust be disconnected last.

19. Always keep your fingers below the finger guards on the

probe when making measurements.

10. Be sure to disconnect the test pins from the circuit when

changing the function.

11. Before starting measurement, make sure that the function and

range are properly set in accordance with the measurement.

12. Never use meter with wet hands or in a damp environment.

13. Do not use the device near an item of strong electromagnetic

generation or a charged item.

14. Never open tester case except when replacing batteries or

fuse. Do not attempt any alteration of original specifications.

15. To ensure safety and maintain accuracy, calibrate and check

the tester at least once a year.

16. The multimeter is restricted to indoor use only.

DRAWING No. RD700/701 06-1404 2040 6010

—3 —

[2] APPLICATION AND FEATURES

2-1 Applications

This instrument is portable digital multimeter designed for

measurement of weak current circuits. It plays an important role in

circuitry analysis by using additional functions as well as

measurements of small type communication equipment, electrical

home appliance, lighting voltage and batteries of various type.

2-2 Features

Fuse protects the current circuit and the terminals are mis-

insertion alarm.

It is the LCD that the value is able to read easily.

The function of the adapter probe is equipped.

The input impedance of the 400 mV range is 1000 M Ω.

It is possible to measure Frequency and Temperature. (K-type)

AC coupling True RMS (RD701)

DRAWING No. RD700/701 06-1404 2040 6010

[3] NAME OF FUNCTIONS

Holster

RELATIVE Button

LCD Display

Common Input Terminal

A measuring Terminal

SELECT Button

RANGE Hold

Button

V•Hz•ADP•Ω•

• • •TEMP

Measuring Terminal

µA•mA measuring

Terminal

POWER Switch and

FUNCTION Switch

DATA Hold Button /

MAX Hold Button

—4 —

DRAWING No. RD700/701 06-1404 2040 6010

[4] DESCRIPTION OF FUNCTIONS

4-1 Function Switch

Turn this switch to turn on and off the power and to select the

functions of ''V / V / Hz / ADP / Ω•••/ TEMP / µA /

mA / A''.

4-2 Auto Power Off

The meter will enter a low power consumption sleep mode

automatically to extend battery life after approximately 30 minutes

of no function switch or push button operations. To wake up the

meter from Auto Power Off, press any buttons momentarily or

turn the function switch to the OFF position. Then turn back on

again.To disable the Auto Power Off feature, press the SELECT

button while turning the function switch on.

Note: Always turn the function switch to the OFF position when

the meter is not in use.

4-3 Low Battery Indication

If the internal battery has been consumed and the internal battery

drops below approx. 2.6 V, Battery mark is shown in the display.

4-4 Measurement Function Select

When the SELECT button is pressed ( ), the functions change

as follows.

•In the case of ADP, µA, mA & A, the modes change as:

•In the case of Ω••• , the modes change as:

Ω Ω.

•In the case of TEMP, the modes change as:

—5 —

DRAWING No. RD700/701 06-1404 2040 6010

4-5 Range Hold : RANGE

Press the RANGE button momentarily to set the manual range

mode then ‘AUTO’ disappears in the display. In manual range

mode, press the button again to step through the ranges. To

return to the auto mode, press the button for 1 sec. or more then

AUTO is shown.

Note: Manual mode is not available in and Hz measurement.

4-6 Data Hold : HOLD

When the HOLD button is pressed, the display is hold (‘ ’ is

shown on the display). The display will not changed while the

function is active. Press the button again to cancel the

function. (‘ ’ on the display disappears.)

4-7 Max Hold: MAX

The max feature displays the measured maximum value as

fast as 30 ms in a single range, and with automatic up range

capability. This function is able to use it with voltage

measurement, current measurement and ADP measurement

function. Press the MAX button for 1 sec. or more to

activate or to exit the max feature in the voltage or current

functions.

4-8 Relative Mode : REL

Relative zero allows the user to offset the meter consecutive

measurements with the displaying reading as the reference value.

Press the REL button momentarily to activate and to exit

relative zero mode.

4-9 Mis-insertion alarm for current function : ALARM

The instrument beeps to warn the user against possible damage

to the instrument due to improper connections to the µA, mA, or A

input terminals when other function (like voltage measurement

function) is selected.

—6 —

DRAWING No. RD700/701 06-1404 2040 6010

—7 —

4-10 Words

AC Sensing

Average RMS: RD700

When measurement is taken by "average", no error is caused as the

input signal is shine wave with no distortion. However, if the input

waveform is distorted sine cave or non-sinusoidal wave, conversion to

root-mean-square values is very difficult, resulting in a large error.

AC coupling True RMS: RD701

When measurement is taken by true r.m.s., the measurement value of

input signal becomes the scales of the signal power and therefore

provide more effective values than those obtained by average value

detection. This multimeter imploys this true RMS circuit, which enables

measurement of sine wave and non-sinusoidal waves like square wave

and triangular wave in r.m.s.

Crest Factor

The crest factor (CF) is expressed by a value obtained by dividing the

peak value of the signal by its RMS value. Most common waveforms

such as sine wave and triangular wave have a relatively low crest

factor. The voltages and crest factors of typical waveforms are shown

in the table.

2π

――

2π

――

2π

―― •Vp

Sine Wave

Square Wave

Triangular Wave

Puls

Input Waveform Peak

RMS

Vrms

Average

Vavg

Vp/Vrms

Form Factor

Vrms/Vavg

VpVpVp 1 1

π2π

0π2π

0τ2π

=1.414 Vrms

=0.707 Vp=0.637 Vp

=1.414 =1.111

=1.732 Vrms

=0.577 Vp=0.5 Vp

=1.732 =1.155

Vrms 2Vp

――

2 Vp

――

π2π

――

Vrms 3Vp

――

232

――

2π

―― •Vp

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