Metrix MX0675, MX0670 User guide

 Pince Multimètre
 Multimeter Clamp
 Multimeterzange
 Pinza Multimetro
 Pinza Multímetro

MX 670 / 675

E N G L I S H

User’s manual

ABLE OF CONTENTS

T

1 GENERAL INSTRUCTIONS................................

1.1 UNPACKING – PACKING..............................................21

1.2 PRECAUTIONS AND SAFETY IN MEASUREMENTS............21

2 DESCRIPTION OF THE INSTRUMENT.................23

2.1 DESCRIPTION OF THE FRONT PANEL ............................23

2.2 DESCRIPTION OF LCD DISPLAY...................................24

3 GENERAL DESCRIPTION.....................................25

3.1 CORRECTION OF ZERO IN DC MEASUREMENT ..............25

3.2 HOLD FUNCTION - FREEZE DISPLAY...........................25

3.3 AUTOMATIC RANGES ..................................................25

3.4 AUTO POWER-OFF .....................................................25

3.5 PEAK FUNCTION (1 MS)............................................25

3.6 MAX MIN FUNCTION (500 MS)...................................26

BACKLIGHT FUNCTION............................................26

3.7

3.8 DISPLAY FUNCTION.................................................26

4 OPERATION...........................................................26

4.1 AC VOLTAGE MEASUREMENT......................................26

4.2 DC VOLTAGE MEASUREMENT......................................27

4.3 MEASURING AC CURRENT..........................................27

4.4 DC CURRENT MEASUREMENT (MX675 ONLY)..............28

4.5 RESISTANCE MEASUREMENT AND AUDIO CONTINUITY

TEST.........................................................................28

4.6 °C/°F T EMPERATURE MEASUREMENT .........................29

4.7 MEASUREMENT OF VOLTAGE FREQUENCY....................30

4.8 MEASUREMENT OF AC CURRENT FREQUENCY .............30

5 TECHNICAL SPECIFICATIONS ............................31

5.1 GENERAL ..................................................................31

5.2 CHARACTERISTICS.....................................................31

5.3 ELECTRICAL SAFETY (AS PER NF EN 61010):.............32

5.4 GENERAL INFORMATION..............................................33

5.5 ENVIRONMENTAL CONDITIONS.....................................33

6 MAINTENANCE......................................................34

6.1 REPLACING THE BATTERY ..........................................34

6.2 CLEANING .................................................................35

6.3 STORAGE ..................................................................35

6.4 METROLOGICAL VERIFICATION ....................................35

6.5 REPAIRS UNDER GUARANTEE AND OUTSIDE GUARANTEE35

7 WARRANTY............................................................35

...21

2

0 MX670 / MX675

hank you for purchasing this MX670 or MX675 series

T
multimeter clamp.
To obtain the best service from your unit:

 read these operating instructions carefully,
 comply with the precautions for use.

1 GENERAL INSTRUCTIONS

If the device is used in a manner unspecified in these
instructions, the protection provided by the device may be
compromised.

1.1 Unpacking – Packing

All instruments are checked mechanically

and electronically

before shipment. All precautions are taken to be sure you
receive an undamaged instrument. If there is damage, notify
the carrier immediately.

1.2 Precautions and safety in measurements

1.2.1 Before any use

The MX670 & MX675 are dual display multimeter clamps.
These multimeter clamps are compliant with electrical
standard IEC 61010 concerning measuring instruments. For
your own safety and to prevent any damage to your measuring
instrument, you must follow the instructions in this manual.

∗ This instrument can be used for measurement on

category IV electrical installations, in a degree 2 pollution
environment, indoors at an altitude lower than 2000 m
and with a voltage in relation to ground lower than or
equal to 600 V.

* Definition of installation categories

(see IEC 61010-1):

: Circuits not directly connected to network and

CAT I
specially protected
Example: protected electronic circuits

CAT II: Circuits connected directly to low-voltage
installation

Example: power supply for domestic electrical appliances
and portable tools

CAT III: Power supply circuits in the building installation

Example: Electrical panel, circuit breakers, fixed industrial
machines or devices

CAT IV: Source circuits of building low-voltage
installation.

Example: Power feeders, counters and protection
systems

For safety reasons, you must use only measuring leads, of

of the

voltage and category at least equal to those

instrument
and compliant with standard IEC 61010.
Before use, always check the integrity

of the

instrument casing

and cable insulation.

M

X670 / MX675 21

.2.2 Meaning of symbols used

1

Symbol Meaning Symbol Meaning

Instrument protected

by double isolation.
Alternating current. Battery.

Direct current.

CAUTION -

DANGER! Refer to

the operating manual.

Caution, risk of
electrical shock

Audible continuity test

Clamp:

Application or

withdrawal authorized

on conductors under

dangerous voltage

Ground.

The CE marking

guarantees

conformity with

European

directives and with

regulations

covering EMC.

Selective sorting

of waste for

recycling electrical

and electronic

equipment within

the European

Union.

In accordance with

the WEEE

2002/96/EC

directive: This

equipment must

not be processed

as household

waste.

1.2.3 When using the instrument

To prevent electrical discharge, injury or damage to the
device, and to ensure you use the multimeter without risk,
follow the safety recommendations
below:

• Read the operating instructions fully before using this

device and observe all safety instructions.

• This device must be used indoors, up to 2000 m altitude.

• Never exceed the protection limit values indicated in the

specifications for each type of measurement.

• When the multimeter clamp is inserted into the

measurement circuits, do not touch the unused
measurement cables or terminals.

• Before changing the function, disconnect the

measurement leads from the circuit measured.

• Never measure resistances on a live circuit. Disconnect

the power and discharge all high voltage condensers
before performing a resistance or continuity
measurement.

• Avoid working alone.

• Use the device only as specified in this manual;

otherwise, the protection provided by this multimeter may
be altered.

• Do not use this device if it appears damaged.

• Inspect the integrity of lead insulation. Replace damaged

leads.

• Be careful when working with voltages higher than

DC or 33 Vrms and 46.7 Vpp, such voltages can

70 V
pose a risk of electrocution. Depending on conditions, the
use of individual protection is recommended.

• Always

keep hands behind the physical protection of the

tips or the clamp during a measurement.

2

2 MX670 / MX675

Always

•

• Before opening the instrument, disconnect it from the

2 DESCRIPTION OF THE INSTRUMENT

2.1 Description of the front panel

use the type of battery specified.

measurement circuits, switch off and make sure you are
not charged with static electricity, which would irreversibly
damage the internal components

1
2
3 Selector switch

4a

4b

A Zero&HOLD Button

5
6

MIN MAX PEAK Key

7
8

9
10
11

COM Socket Input

Physical protection

of the

instrument.

Jaws

Trigger

HOLD Button

DISPLAY Key

BACKLIGHT Key

LCD display

Socket input +

M

X670 / MX675 23

2.2 Description of LCD display

MX670 MX675

 

 
 
 

 
 

 

 
 

 
 

 
 

 
 

 
 
 

MAX

MIN

HOLD Freeze display

Ω

Ω

ΩΩ

V

A

ZERO

PEAK
AUTO

°C
°F

Auto power-off

Max. value

MIN value

Continuity Test

Resistance

measurement

Voltage

measurement

Current measurement

Frequency

measurement

Battery low

Direct current

Negative value

ADC zero function

Alternating current

Peak Value

Automatic ranges

Degrees Celsius

Degrees Fahrenheit

24 MX670 / MX675

3 GENERAL DESCRIPTION

3.1 Correction of zero in DC measurement

This function is present only on model MX675 to return to zero
the display

of the

remanent magnetization of the clamp in DC
measurement. When the switch is positioned on ADC and with
no conductor inserted into the clamp, press the ADC ZERO &
HOLD key (about 2 seconds) until display a of zero current
appears. This reset to zero is also indicated by an audio beep
and the display

of the

symbol ZERO.
This operation must usually be renewed after each high
amplitude current measurement.

Elimination of zero correction is possible only by changing the
function using the switch.

3.2 HOLD function - Freeze display

In model MX670, it is possible to freeze the value displayed by
pressing the "HOLD" button. To deactivate this function, press
the "HOLD" button a second time.

In model MX675, it is possible to freeze the value displayed by
pressing the “A ZERO & HOLD” button. To deactivate this
function, press the “A ZERO & HOLD” button a second time.

3.3 Automatic ranges

Depending on the function and nature of the input signals, the
instrument uses automatically the best suited measurement
range. The manual choice of a range is therefore not possible.

3.4 Auto power-off

The clamp will stop automatically after 10 minutes
(The symbol is displayed).
To deactivate this function, hold down the A ZERO & HOLD
button (for MX675) or the HOLD button (for MX670). Activate
the clamp while turning the switch from the “OFF” position
towards any position.

Release the button when the audio signal confirms the
operation (the symbol is no longer displayed).

3.5 PEAK Function (1 ms)

This function is used for measuring 1-ms peak values in
voltage or current.

To activate the function, press the MIN MAX PEAK key for at
least 2 seconds, until "PEAK" is displayed.

To exit this function, press the MIN MAX PEAK key for at
least 2 seconds or press the A ZERO & HOLD button
(MX675) twice or press the HOLD (MX670) button twice; the
clamp returns to normal mode.

MX670 / MX675 25

.6 MAX MIN function (500 ms)

Connect the red test lead to the

"+" terminal and the black test

touch prods in contact

measurement points

Read the result of the

3
To activate the MAX MIN function, press on the MIN MAX
PEAK button. The MIN value is then displayed. (the MIN

symbol is displayed steady; the MAX symbol is displayed
flashing)

By pressing again on the key, the MAX value will be displayed
(the MIN symbol is displayed flashing; the MAX symbol is
displayed and steady).

By pressing the key again, the clamp returns to normal mode.

3.7 BACKLIGHT Function

By pressing the
on, press again, it goes off.
The "auto power off" function activates after 3 minutes.

3.8 DISPLAY Function

When measuring voltage or AC current, pressing the
DISPLAY key replaces the nature
the signal frequency
returns to the previous display.
In temperature measurement, pressing the DISPLAY key
switches the displays in degrees Celsius and degrees
Fahrenheit

4 OPERATION

4.1 AC voltage measurement

button, the backlight

of the

of the

measured temperature.

of the

display goes

of the

main display. Pressing again

• Position the switch on V .

lead to the "COM" terminal.
Put the

with the
under AC voltage.

secondary display by

2

6 MX670 / MX675

measurement on the display.

.2 DC voltage measurement

Connect the red test lead to

he black

test lead to the "COM"

touch prods in

measurement points under

Read the result of the

There is no secondary

current display for model

4

4.3 Measuring AC current

• Position the switch on V .

the "+" terminal and t
terminal.
Put the

contact with the
DC voltage.

measurement on the display.

MX670.

• Set the switch to A .

Safety reminder: The technology of this instrument allows the
application or withdrawal
under dangerous voltage. Always
going past the physical safety protection.
Open the jaws by pressing the trigger. Position the clamp
around the single conductor to be measured.
Release the trigger. Check that the clamp is properly closed.
Read the result of the measurement on the display.
If difficult access makes reading the display impossible, press
briefly on the HOLD button (MX670) or on the A
HOLD button (MX675) to freeze the display and read the
result after withdrawal

Note: The measurement results are most accurate when the
conductor is centred in the middle of the jaws.

M

X670 / MX675 27

of the

of the

clamp on bare conductors

hold

the instrument while never

clamp.

ZERO &

.4 DC Current measurement (MX675 only)

operating procedure is then

clamp arm,

Connect the red test lead to the "+"

terminal and the black test lead to

Put the touch prods into contact with

Read the result of the measurement

check that the circuit

is disconnected from the power

4

Set the switch to A .
Once the display is stabilised,

press the A ZERO & HOLD
button to reset the display to
zero.

The
identical to that of AC
measurement.
See previous paragraph.

Note: The correct display of
current direction is the result of
observing the positioning
"+" indication on the
in relation to the source.

4.5 Resistance measurement and Audio Continuity Test

Set the switch to Ω .

4.5.1 Resistance measurement:

the "COM" terminal.

the points to be measured.

on the display.

Note: Always
supply before measuring resistance!

of the

2

8 MX670 / MX675

.5.2 Audio Continuity Test：：：：

temperature,

type K

input

The main display is in degrees

secondary display in degrees

can

main display to

degrees Fahrenheit (°F) and

secondary display to

degrees Celsius (°C) by

4

Connect the red test lead to the "+" terminal and the black test
lead to the "COM" terminal.

Put the touch prods into contact with the circuit to be tested.
If the resistance value of circuit R<35 Ω , the buzzer sounds

continuously.

Note: Always check that the circuit is disconnected from the
power supply before measuring continuity!

4.6 °C/°F Temperature Measurement

M

X670 / MX675 29

Set the switch to TEMP.
To measure the

connect the
thermocouple probe to the
terminals, observing the
polarity.

Celsius (°C) by default, and the
Fahrenheit (°F). The user

change the
the
pressing the DISPLAY key.

.7 Measurement of voltage frequency

,

Connect the red test lead to

terminal and the black

test lead to the "COM"

Place the touch prods in

contact with the points whose

frequency value on

measured TRMS

, and

Open the jaws by pressing the

trigger. Position the clamp around

Release the trigger. Check that

osed.

Read the result of the

measurement on the secondary

measured TRMS

4

Position the switch on V
and press the DISPLAY key.

the "+"
terminal.

frequency is to be measured.
Read the

the secondary display.
The main display indicates the

value

of the

voltage.

4.8 Measurement of AC current frequency

Position the switch on A
press the DISPLAY key.

the conductor to be measured.

R

the clamp is properly cl

3

0 MX670 / MX675

display.
The main display indicates the
value

of the

current.

1000

TECHNICAL SPECIFICATIONS

5

5.1 General

The tolerances assigned to the values, or declared limits,
constitute only the values guaranteed by the manufacturer.
Values without a tolerance are for information only.

The symbol

is displayed when the input signals exceed

the limit values possible in each measurement range.

The symbol - is displayed in °C/°F measurement when

there is no input signal (open circuit).

5.2 Characteristics

Accuracy is to within ± [% of the reading (L) + number of
counts (cts)] in the reference conditions indicated in the
appendix.

5.2.1 DC voltage

Range Measuring range Resolution
1000 V 0.0 to 999.9 V 0.1 V
1400 V 1000 to 1400 V 1 V

Accuracy
1% ± 2 cts
1% ± 2 cts

Input resistance: 1 MΩ
Overload indication: 1400 VDC

5.2.2 AC voltage

Range Measuring range Resolution

1000 V 0.0 to 999.9 V 0.1 V

Accuracy

1.0% ± 5 cts (50 – 60Hz)

1.2% ± 5 cts (60 -500Hz)

2.5%± 5 cts (500Hz – 3kHz)

Input resistance: 1 MΩ
Overload indication: 1000 Vrms

5.2.3 DC current (MX675 only)

Range Measuring range Resolution Accuracy

100 A 0.00 to 99.99 A 0.01 A
1000 A 100.0 to 999.9 A 0.1 A
1400 A 1000 to 1400 A 1 A

1.2% ± 5 cts

2.5% ± 5 cts

2.5% ± 5 cts

Overload indication: 1400 ADC

5.2.4 AC current

Range Measuring range Resolution

100 A 0.00 to 99.99 A 0.01 A

1000 A 100 to 1000 A 0.1 A

Accuracy

1.5% ± 5 cts (50 -60Hz)

2.0% ± 5 cts (60 -500Hz)

4.5% ± 5 cts (500Hz –

3kHz)

Overload indication: 1000 A Rms

5.2.5 Resistance (ΩΩΩΩ)

Range Measuring range Resolution Accuracy

1000 Ω 0.0 to 999.9 Ω 0,1 Ω

10000 Ω 1000 to 9999 Ω 1 Ω

1% ± 3cts

3.3 VDC (Vmax)

Protection: 1 000 V rms

5.2.6 Continuity

M

X670 / MX675 31

Range Measuring range Accuracy

Continuity

Ohm Function
Buzzer < 35Ω

1% ± 3 cts

3.3 VDC (Vmax)

Protection: 1,000 Vrms

5.2.7 Frequency Hz

• For currents

z

1000 to 9999 Hz

z

Measuring

range

0.0 to 999.9 Hz

Resolution Accuracy Sensitivity

0.1 Hz
1 Hz

1.0% ± 2 cts

Range

1,000H

10,000H

• For voltages

Range

1,000H

10,000H

5.2.8 Temperature (°C/°F)

°C

1,000°C
1,200°C

Measuring

range

0.0 to 999.9 Hz

z

1000 to 9999 Hz

z

Range Measuring range Resolution Accuracy

-40 to +999.5°C 0.5°C
1000 to 1,200°C

Resolution Accuracy Sensitivity

0.1 Hz
1 Hz

1.0% ± 2 cts

1 °C

1.0% ± 2°C

3 A Rms

5 Vrms

°F

Range

Measuring range Resolution Accuracy

2192 -40 to +2192°F

1°F 1.0% ± 4°F

APPENDIX:
Reference Conditions:

Measuring range: 10 to 100 %

of the

range.

Applied AC Signal:

- frequency between 48 and 65 Hz

- no DC component

- sinusoidal, Fc = 2
Temperature 23°C ± 3°C

No external alternative magnetic field
No electrical field
Conductor centred in jaws (in A)

5.3 Electrical safety (as per NF EN 61010):

Compliant with safety standards NF EN 61010-1 Ed.2001 and
NF EN 61010-2-032 Ed.2002 for 600 V CAT IV or 1000V CAT

II, Pollution degree 2 and altitude < 2000 m.

I

3

2 MX670 / MX675

5.4 General information

Digital display:

LCD dual display, 4 digits with max. indication of 9999 points.

Polarity:

When a negative signal is applied, the sign appears.

Low Battery Indicator:

is displayed when the voltage supplied by the battery is
lower than the operating voltage. The measurements are then
guaranteed for only a short period.

Power supply:

Battery: 9 V, NEDA 1604, 6F22 alkaline
Typical autonomy: 35 hours (MX670)
30 hours (MX675)
with alkaline battery, no buzzer or backlight.

Protection index of the housing:

IP30 according to EN 60529 Ed. 92

Maximum jaw opening:

MX670: ∅ 42 mm
MX675: ∅ 40 mm

Dimensions:

MX670: 272 x 80 x 43 mm
MX675: 257 x 80 x 43 mm

Weight:

MX670: 480 g (with battery
MX675: 440 g (with battery

5.5 Environmental conditions

5.5.1 Temperature

Operation: : 0°C to 40°C, < 70% RH
Storage: -10°C to 60°C, < 80% RH

5.5.2 Altitude

Operation: < 2000 m
Storage < 12,000 m

MX670 / MX675 33

.5.3 Electromagnetic Compatibility

5

(as per NF EN 61326)

Compliant with electromagnetic compatibility standard
NF EN 61326-1 (07/97) + A1 (10/98) + A2 ( 09/2001)

- Radiated and conducted emission (NF EN 55022)

- Radiated Immunity, criterion B (NF EN 61000-4-3)

- Conducted Immunity, criterion A (NF EN 61000-4-6)

- Electrostatic discharges, criterion A (NF EN 61000-4-2)

- Transients, criterion B (NF EN 61000-4-4)

- Shock waves, criterion A (NF EN 61000-4-5)

Note: Certain high power radioelectric frequencies are, in
specific conditions, capable of interfering with the
metrological integrity

of the

multimeter.

6 MAINTENANCE

6.1 Replacing the Battery

1. The symbol

and its voltage is becoming insufficient for proper

appears when the battery is run down

operation. It must then be replaced.

2. Before changing the battery, the clamp must be

disconnected from any external electrical source and
must not be holding cables, set the switch to the "OFF"
position.

3. Unscrew the 2 screws on the lower casing.

4. Replace the used battery with a new 9V battery, making

sure of the correct positioning

of the

wires to prevent any

pinching at closing.

5. Refit the lower casing and close using the 2 attaching

screws.

3

4 MX670 / MX675

.2 Cleaning

6

Keep the gap between the jaws in a state of perfect
cleanliness.
Set the instrument to the OFF position. Clean the unit with a
cloth and a little soapy water. Wipe over with a damp cloth.
Never use abrasive products or solvents. Dry carefully before
any further use.

6.3 Storage

If the instrument is not used for a period exceeding 60 days,
remove the battery and store it separately.

6.4 Metrological verification

Regular checks must be carried out as for all measurement or
test devices.
To have your devices checked and calibrated, please contact
our COFRAC approved metrology laboratories or
MANUMESURE centres.
Information and address details available on request:

Tel.: [phone] Fax: [phone]

6.5 Repairs under guarantee and outside guarantee

Send your devices to one of the Chauvin-Arnoux Metrix­approved Manumesure regional technical centres.
Information and address details available on request:

Tel.: [phone] Fax: [phone]
Or return the instrument to your distributor for any intervention
required

during and after the guarantee period.
If you ship the instrument, use preferably the original
packaging and specify the reasons for the return as clearly as
possible in a note included with your instrument.

7 WARRANTY

This instrument is guaranteed against any defect in materials
or workmanship, in accordance with the general terms and
conditions of sale.
During the guarantee period (1 year), the instrument must be
repaired only by the manufacturer, who reserves the right to
repair the instrument or to exchange all or part of it. If the
instrument is returned to the manufacturer, the transport costs
are the customer's responsibility.

The guarantee is not applicable in the following cases:

1. misuse of the instrument or use with incompatible
equipment;

2. modifications of the instrument without explicit
authorisation

of the

manufacturer's engineering

department;

3. work carried out on the instrument by a person not
approved by the manufacturer;

4. adaptation for a specific application, not included in

of the

the definition

instrument or the operating

instructions

5. impacts, falls or immersion.

M

X670 / MX675 35

TO ORDER

MX 670 Multimeter Clamp ...................... MX0670

MX 675 Multimeter Clamp ...................... MX0675

Delivered with :

1 set of leads with probe tip (red and black),

•

1 user manual 5 languages,

•

1 9V alkaline battery.

•

1 supple carrying case .

•

1 K thermocouple câble.

•

3

6 MX670 / MX675

Code 692308A00 - Ed. 2

03 - 2009

DEUTSCHLAND - Chauvin Arnoux GmbH

Straßburger Str. 34 - 77694 Kehl / Rhein
Tel: [phone] - Fax: [phone]

ESPAÑA - Chauvin Arnoux Ibérica SA

C/ Roger de Flor N° 293, Planta 1- 08025 Barcelona
Tel: [phone] - Fax: [phone]

ITALIA - Amra SpA

Via Sant’Ambrogio, 23/25 - 20050 Bareggia di Macherio (MI)
Tel: [phone] - Fax: [phone]

USA - Chauvin Arnoux Inc - d.b.a AEMC Instruments

200 Foxborough Blvd. - Foxborough - MA 02035
Tel: [phone] - Fax: [phone]

ÖSTERREICH - Chauvin Arnoux Ges.m.b.H

Slamastrasse 29/3 - 1230 Wien
Tel: [phone] - Fax: [phone]

SCANDINAVIA - CA Mätsystem AB

Box 4501 - SE 18304 TÄBY
Tel: [phone] - Fax: [phone]

SCHWEIZ - Chauvin Arnoux AG

Einsiedlerstraße 535 - 8810 Horgen
Tel: [phone] - Fax: [phone]

UNITED KINGDOM - Chauvin Arnoux Ltd

Waldeck House - Waldeck Road - Maidenhead SL6 8BR
Tel: [phone] - Fax: [phone]

MIDDLE EAST - Chauvin Arnoux Middle East

P.O. BOX 60-154 - 1241 2020 JAL EL DIB (Beirut) - LEBANON
Tel: [phone] - Fax: [phone]

CHINA - Shanghai Pu-Jiang - Enerdis Instruments Co. Ltd

3 F, 3 rd Building - N° 381 Xiang De Road - 200081 SHANGHAI
Tel: [phone] - Fax: [phone]

http://www.chauvin-arnoux.com

190, rue Championnet - 75876 PARIS Cedex 18 - FRANCE

Tél. : [phone] - Fax : [phone] -

Export : Tél. : [phone] - Fax : [phone] -

[e-mail]

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