Gossen MetraWatt METRISO PRO Bedienungsanleitung

METRISO PRO

Analog Insulation, Low Resistance and Voltage Measurement Instrument 3-349-815-03

1/9.14

Operating Instructions

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Overview of Included Features Scope of Delivery

1 Insulation and resistance measuring instrument

1 Factory calibration certificate

1 Set of batteries (8 pieces in battery holder)

1Carryingstrap

1 Alligator clip

1 KS17-4 cable set

1 Condensed operating instructions

1 Supplement Safety Information

– Detailed operating instructions for download from our website

at www.gossenmetrawatt.com

Battery Compartment Lid and Location of the Fuses

(housing bottom)

METRISO PRO

Article number M550R

Measurements:

RINS U = 50, 100, 250, 500, 1000 V

RLO 0.17 ... 4 

U 10 ... 1000 V

Display Functions:

Scale illumination

Limit value LED (green/red) for:

additional acoustic signal,

limit values per VDE 0100

RINS RLO

Caution LED

for dangerous contact voltage

– When switched off

– For active test voltage

FUSE LED

For blown fuse

Battery level display

Special Functions:

Discharge capacitive devices under test

Safety shutdown (UBatt < 8 V)

Features:

Measuring category

CAT II 1000 V / CAT III 600 V / CAT IV 300 V

Test resistor: 10 M

Factory calibration certificate

a b

Replacement Fuse

Fuse Link

Battery Compartment Lid

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GMC-I Messtechnik GmbH 3

Inserting the Battery Holder (side view) Connections (housing top)

1Z550A accessory as option: test probe with measurement key and an additional

key for illuminating the measuring point, including shielded, plug-in connector

cable

Battery Holder

Battery Compartment Lid

Battery Holder

Contacts

Battery

Contact

Spring

User Interface

Compartment

Shielded

Cable

Test

Resistor

Test

Resistor

Test Probe with

Control Keys 1

Connector with

Shielded Cable,

Option KS-C (Z541F)

(G500/G10

G500/G1000)

Measuring Connections

+COM

COM

10 M

GUARD

SHIELD

Guard connection

see section 5.4

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User Interface

Red LED: limit value violated

Red LED:

– Interference voltage with device off

Function

Selector Switch

Guide for

Carrying Strap

Guide for

Carrying Strap

Green LED: limit value complied with

– Blinking indicates standby mode

Control Panel Keys

(see description on page 5)

Display Panel

(see description on page 5)

Refer to page 10 for a description of the LEDs.

– Test voltage active

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Control Panel Keys – Adjusting Screw

aSTART: Starts insulation resistance measurement depending

on rotary selector switch setting (see measuring ranges ➀and

➁), or low-resistance measurement with automatic polarity

reversal (see low-resistance measuring range ➂).

Reactivates the instrument from the standby mode.

bCONTIN./ZERO *

Starts long-term measurement for insulation and low resis-

tance (low resistance: polarity in one direction only).

Each measurement takes up to 3 minutes; the instrument is

then switched to standby. Reactivates the instrument from the

standby mode.

cBat. TEST: Starts the battery test (see battery level display ➄

and section 3.1).

d10k-1T/100k-100M

Switches between measuring ranges for insulation resistance

measurement (see measuring ranges

➀

and

➁

, as well as sec-

tion 5.2).

Reactivates the instrument from the standby mode.

Mechanical Zero Point – Adjusting Screw (e)

If necessary, use the adjusting screw (e) to set the pointer to the

mechanical zero point (measuring range lower limit for all measur-

ing ranges, except battery level indicator) with the switch in the

OFF position.

Electrical Zero Point – ZERO Function (Roffset)

ZERO function (Roffset): for subtracting cable resistance from the

measurement results with the help of the CONTIN. and 10k-1T/

100k-100M keys (see section 7.3).

* the supplementary labelling „ZERO“ depends on the product series

Analog Display Symbols

1Insulation resistance measuring range: 10 k... 1 T

LED ➀ lights up orange: this measuring range is active

LED ➀ blinks orange: open cable ends (special case with

50 V test voltage: full-scale pointer deflection of 1 G)

2Insulation resistance measuring range: 100 k... 100 M

LED ➁ lights up orange: this measuring range is active

3Low-resistance measuring range: 0 ... 5 

LED ➃blinks orange if the range is exceeded

4Voltage measuring range: 0 ... 1000 V

LED

➃

lights up orange: low-resistance measurement is active

LED ➃lights up orange: voltage measurement is active

5Battery level indicator :

Left-hand range limit: batteries low or weakly charged

Right-hand range limit: batteries full or fully charged

6Fuse link and electronic fuse:

FUSE ZERO/FUSE ➅ blinks red: blown fuse

Voltage measurement is still possible.

– Funktion ZERO (Roffset):

LED ZERO/FUSE ➅ lights up red permanently after

offset blancing, see section 7.3.

a b c d

6 3

➀

➁

➃

➅

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Contents Page Contents Page

1 Applications ...............................................................................7

2 Safety Features and Precautions ..............................................8

3 Initial Start-Up ...........................................................................9

3.1 Battery Test .....................................................................................9

3.2 Installing or Replacing Batteries .....................................................9

4 General Operation ....................................................................10

4.1 Switching On, Monitoring and Switching Off ................................10

4.2 Analog Display ...............................................................................11

5 Insulation Resistance Measurement

– Riso/Rins Function ...............................................................12

5.1 Connection ....................................................................................12

5.2 Executing the Measurement .........................................................12

5.3 Ending the Measurement – Safe Discharging ...............................14

5.4 Measurements with the Guard Cable ............................................14

6 Measuring Direct, Alternating and

Pulsating Voltage – V Function ................................................15

Measuring Low-Resistance of up to 5



– RLO Function ........................................................................16

7.1 Measurement with Automatic Polarity Reversal ...........................17

7.2 Measurement with Manual Polarity Reversal ................................17

7.3 Taking Measurement Cables and Extension Cables into Account (up

to 5 ) – ZERO Function (Roffset) .................................................18

8 Test Resistor for Insulation Measurement for Checking the

Insulation Measuring Instrument .............................................18

9 Technical Data ........................................................................19

List of Abbreviations and their Meanings ..................................... 23

11 Maintenance ........................................................................... 24

11.1 Battery and Rechargeable Battery Operation ................................24

11.2 Fuses .............................................................................................24

11.2.1Fuse Link – ZERO/FUSE LED ...................................................................... 24

11.2.2Electronic Fuse – ZERO/FUSE LED ............................................................. 25

11.3 Housing .........................................................................................25

12 Recalibration ........................................................................... 26

13 Appendix ................................................................................. 26

13.1 Sample Connection Layouts for Insulation Resistance Measurement 26

13.2 Attaching the Test Probe Holder to the Carrying Strap .................29

13.3 Technical Data for Measurement Cables

(scope of delivery: KS17-4 safety cable set) .................................30

13.4 Optional Accessories (not included) ..............................................31

14 Repair and Replacement Parts Service

Calibration Center* and Rental Instrument Service ...................... 31

15 Product Support ...................................................................... 32

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1 Applications

These instruments fulfills all requirements of applicable European

and national EC directives. We confirm this with the CE mark. The

relevant declaration of conformity can be obtained from GMC-I

Messtechnik GmbH.

The METRISO PRO insulation and resistance measuring instru-

ment allows for quick and efficient testing of protective measures

in accordance with DIN VDE 0100, ÖVE-EN 1 (Austria), SEV 1000

(Switzerland), and regulations specific to other countries as well.

The device is equipped with a microprocessor and complies with

IEC/EN 61557 / VDE 0413 regulations:

Part 1: General requirements

Part 2: Insulation resistance measuring instruments

Part 4: Instruments for measuring resistance at

earthing con-

ductors, protective conductors and equipotential bonding

Part 10: Combined measuring equipment for testing, measuring

or monitoring protective measures

as well as requirements per VDE 0701-0702:

Repair, modification and testing of electrical devices

The test instrument is especially well suited for:

•Systemssetup

• Initial start-up

• Periodic testing

• Troubleshooting in electrical systems

The following measurements and tests can be performed with the

insulation measuring instruments:

• Insulation Resistance

• Low-resistance

• Voltage

The following can also be tested by using a shielded measure-

ment cable:

• Floor covering electrostatic discharge capability

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2 Safety Features and Precautions

The electronic measuring and test instrument is manufactured

and tested in accordance with safety regulations IEC/EN 61010-

1/VDE 0411-1 and EN 61557. When used for its intended pur-

pose, safety of the operator, as well as that of the instrument, is

assured.

Read the operating instructions thoroughly and carefully before

using your instrument. Follow all instructions contained therein.

The measuring and test instrument may not be placed into ser-

vice:

• If the battery compartment lid has been removed

• If external damage is apparent

• If connector cable or measuring adapters are damaged

• If the instrument no longer functions flawlessly

• After extraordinary damage due to transport

• After a long period of storage under unfavorable conditions

(e.g. humidity, dust or extreme temperature)

Opening of Equipment / Repair

The equipment may be opened only by authorized service per-

sonnel to ensure the safe and correct operation of the equipment

and to keep the warranty valid.

Even original spare parts may be installed only by authorized ser-

vice personnel.

In case the equipment was opened by unauthorized personnel,

no warranty regarding personal safety, measurement accuracy,

conformity with applicable safety measures or any consequential

damage is granted by the manufacturer.

Meanings of Symbols on the Instrument

Warning concerning a point of danger

(attention, observe documentation!)

Protection class II device

CAT II / III Device assigned to measuring category

CAT II 1000 V / CAT III 600 V / CAT IV 300 V

EC mark of conformity

The device and included batteries may not be dis-

posed of with the trash. Further information regarding

the WEEE mark can be accessed on the Internet at

www.gossenmetrawatt.com by entering the search

term “WEEE”.

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GMC-I Messtechnik GmbH 9

3 Initial Start-Up

3.1 Battery Test

A battery test should be conducted after inserting the batteries, or

if none of the measuring range LEDs lights up during insulation

resistance measurement. Press and hold the Bat. TEST key to this

end. Pointer deflection within the scale for the battery test indi-

cates the condition of the batteries with an average load amount-

ing to a test voltage of 1000 V. The rotary selector switch position

is not taken into consideration. The left-hand scale limit repre-

sents minimum required supply voltage, and the right-hand limit

represent maximum available supply power.

Note

If the pointer is only deflected into the minimum supply

power range, several measurements can still be executed

with test voltages of less than 1000 V, because the bat-

tery test is conducted with a load which amounts to a test

voltage of 1000 V.

The instrument does not function if the batteries have been

depleted excessively, and alarm indication does not work either.

3.2 Installing or Replacing Batteries

New batteries must be inserted for initial start-up, or if only mini-

mal supply power is indicated.

Attention!

Before opening the battery compartment (see page 5 for

location), disconnect the instrument from the measuring

circuit (mains) at all poles.

Eight 1.5 V size AA batteries in accordance with IEC LR 6 are

required for operation of the insulation measuring instrument. Use

new alkaline manganese batteries only.

Rechargeable NiCd or NiMH batteries may also be used. These

can only be recharged externally. We recommend rechargeable

NiMH batteries.

Always replace batteries in complete sets.

Dispose of batteries in an environmentally sound fashion.

ÐLoosen both slotted screws for the battery compartment lid

on the back, and remove the lid.

ÐRemove the battery holder and insert eight 1.5 V size AA bat-

teries with correct polarity in accordance with the symbols.

Attention!

Make sure that all of the batteries are inserted with correct

polarity. If just one battery is inserted with reversed polar-

ity, it will not be recognized by the instrument and may

result in leakage from the batteries.

Push the battery holder into the battery compartment such that

the battery holder’s contacts touch the contact springs at the

bottom of the battery compartment (see drawing on page 3).

If the battery holder is not inserted as specified, the instrument

cannot be supplied with power.

ÐReplace the battery compartment lid and retighten the

screws.

Attention!

The instrument may only be placed into service if the

battery compartment lid is securely fastened!

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4 General Operation

The test leads are connected to the “+” and “COM” jacks.

When measuring electrostatic

discharge capacity for floor

coverings, the shielded cable

should also be connected to

the COM and SHIELD jacks (KS-C

accessory set, “cable set con-

sisting of measurement cable

and high-resistance measure-

ment cable for measurements

in the Grange” (see diagram). Be sure to observe color coding.

4.1 Switching On, Monitoring and Switching Off

The instrument is switched on as soon as the rotary switch is

turned to any position other than OFF.

If battery voltage falls below the allowable limit value (U < 8 V), the

instrument cannot be switched on, or it is immediately switched

off.

Measurement cannot be started in the resistance measuring

ranges in the event of interference voltage.

The instrument is switched to the standby mode after 3 minutes,

if neither the rotary switch nor any keys have been activated dur-

ing this time.

A brief acoustic signal is generated before the instrument

switches itself off automatically with the rotary switch in a position

other than OFF. Moreover, 6 brief acoustic signals indicate every

10 minutes that the device is still on standby. The device should

be switched off by setting the rotary selector switch to OFF in

order to save (rechargeable) batteries.

The instrument can be activated once again by pressing the START

key.

The instrument can be switched off manually by turning the rotary

switch to the OFF position.

For purposes of transport and maintenance, we recommend turn-

ing the rotary selector switch to the OFF position in order to avoid

switching the test instrument on inadvertently.

Start-Up Test

When the instrument is switched on, i.e. as soon as the rotary

switch is turned to any position other than OFF, all LEDs light up

briefly: limit, caution, blown fuse, insulation resistance measuring

ranges, voltage measurement and scale illumination.

Optical Indicators

1Function testing should be executed at regular intervals (see following section re-

garding testing the LEDs).

KS-C

(Z541F)

COM

SHIELD

GUARD

LED Status Function – Cause

Limit value indication

–Measuredinsulation resistance does not violate the limit

value.

– Measured low-resistance Rlo does not violate the limit

value.

Limit value indication

– Measured insulation resistance has fallen short of the limit

value.

– Measured low-resistance Rlo has exceeded the permissible

limit value.

Detection of interference voltage in the off state 1

If dangerous voltage of greater than 50 V is present at the measure-

ment inputs:

– Initialization of the insulation resistance and

low-resistance measurements is disabled.

– Presence of test voltage is indicated.

Limit

Green

Limit

Red

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