Gossen Metrawatt METRISO INTRO, METRISO BASE, METRISOTECH Operating Instructions

Operating Instructions

METRISO INTRO, BASE, TECH

Insulation, Low Resistance and Voltage Measurement Instrument

3-349-812-03

3/12.15

Features Overview of Both Instrument Variants Scope of delivery:

a b

Replacement Fuse

Fuse

Battery Compartment Lid

METRISO INTRO BASE TECH
Article number M550N M550O M550P
Measurements

U = 1000 V

R

INS

R

U = 250, 500 V ✓✓✓

INS

R

U = 50, 100 V — ✓✓

INS

R 10 Ω ... 10 kΩ
RLO 0.17 Ω ... 10 Ω

U 0 ... 1000 V

U 0 ... 500 V

Display Functions

Backlit display

Limit value LED (green/red) for:
Additional acoustic signal, limit value per VDE 0100

LED for dangerous contact voltage

(when switched off)
LCD symbol for external voltage

Battery level display

Special Functions

Discharge capacitive devices under test

Safety shutdown (UBatt < 8 V)

Features

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

Measuring category CAT II I 600 V / CAT IV 300 V
10 MΩ test resistor

DAkkS calibration certificate

✓

—

✓
✓ —
✓

✓

R

INS RLORINS RLORINS RLO

—

✓
✓

✓
✓

✓ —
✓

—

—

—

✓

✓✓
✓✓

✓

✓✓

✓✓

✓✓

✓✓
✓✓

✓✓
✓✓

✓
✓✓
✓✓
✓✓

1 Insulation and resistance measuring instrument
1 DAkkS calibration certificate (not METRISO INTRO)
1 Set batteries (8 ea. in battery holder) (not METRISO INTRO)
1Carrying strap
1 Alligator clip (not METRISO INTRO)
1 KS17-4 cable set
1 Condensed operating instructions
1 Supplement Safety Information
1 Detailed operating instructions for download from our website

at www.gossenmetrawatt.com

Battery Compartment Lid and Location of the Fuses
(housing bottom)

2 GMC-I Messtechnik GmbH

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

Battery Holder

Battery Compartment Lid

Battery Holder
Contacts

Battery

Contact
Spring

User Interface

Compartment

+

COM

+

COM

SHIELD

Shielded

Cable

Tes t

Resistor*

Tes t
Resistor*

Measuring

Test Pro b e w ith
Control Keys

1

10 MΩ*

Connector with

Shielded Cable,

Option KS-C (Z541F)

(G500/G100G500/G1000)

Connections

GUARD*

* not METRISO INTRO

GMC-I Messtechnik GmbH 3

1

Z550A accessory as option: Test probe with a key for triggering measurement, and
an additional key for illuminating the measuring point, including shielded plug-in
connector cable

User Interface (Example METRISO TECH)

LCD panel

Start measurement
Parameters transfer

Exit

Activate instrument

Continuous

Scroll down:

Red LED: limit value exceeded

Red LED:

– External voltage with device switched off *

Setup menu SEt

Function
selector switch

Guide for
carrying strap

Guide for
carrying strap

M Vk

TRMS

AC

DC

Rlo>10%

MAN

DATA

STORE

ZERO G

ISO

2500V
1000 V

Tk

1

0

0

k

1

G

1

0

k

1

M

1

0

G

0

1

0

0

0

V

12

0

0

G

1

0

0

M

1

0

M

Green LED: limit value adhered to

– SETUP: parameter selection

– V: voltage type selection

– Rlo: polarity reversal

Scroll up:

– SETUP: parameter selection

– V: voltage type selection

– Rlo: polarity reversal

– Test/Measuring voltage with device switched on

for Riso/Rins,

menu

from standby
state

measurement

R & R

LO

– Discharge voltage for Riso/Rins

* not

METRISO INTRO

4 GMC-I Messtechnik GmbH

Digital Display Symbols

M

Vk

TRMS

AC

DC

Rlo>10%

MAN

DATA
ZERO

G

ISO

2500V

1000 V

T

k

1

0

0

k

1

G

1

0

k

1

M

1

0

G

0

1

0

0

0

V

1

2

0

0

G

1

0

0

M

1

0

M

6

7

8

1 3

10

9

13

12

4 52

11

On

14

Battery full

Battery OK

Battery weak

Battery (almost) dead, U < 8.5 V

Battery level indicator

GMC-I Messtechnik GmbH 5

1 Battery level indicator
2 Digital display with decimal point and polarity display
3 MAN: Low-resistance measurement:

manual measuring range selection active

4 Rlo: Low-resistance measurement:

special case for automatic low-resistance measure
ment with measurement in both directions of current
flow: both measured values are displayed where ΔRlo > 10%

5 Low-resistance measurement:

polarity reversal display (reversed current flow
direction) Ω→ or ←Ω

6 Analog display pointer: bar graph or pointer,

see A.diSP parameter on page 12
Triangle at display: indicates overranging

7 DC/AC: Selected current type

ISO xxxV:

8

Insulation resistance measurement: selected test voltage

9 Ω V: Unit of measure

10 ZERO:

Cable compensation for low-resistance measurement is
active,

see rLEAd parameter on page 11

11 DATA: Blinks during measurement

Static: measured value is stable

12 Warning regarding dangerous voltage:

13 Acoustic signal (beeper) active for exceeded limit

14 ON Instrument is continuously on

U > 50 V AC/DC

values, see bEEP parameter on page 12

(except with switch in OFF position),
see APOFF parameter on page 12

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

3.3 Query and Set Device Parameters – SETUP Function ...................10

3.3.1 Paths to the Various Parameters ...............................................................10

3.3.2 Querying Parameters – InFo Menu (as moving letters) ..............................11

3.3.3 Entering Parameters – SEt Menu ...............................................................11

3.3.4 Default Settings .........................................................................................13

4 General Operation ....................................................................14

4.1 Switching On, Monitoring and Switching Off ................................14

4.2 Measured Value Display ................................................................15

5 Measuring Insulation Resistance – R

5.1 Connection ....................................................................................16

5.2 Performing the Measurement .......................................................16

5.3 Ending the Measurement ..............................................................17

Function ............16

iso/Rins

6 Measuring Direct, Alternating and Pulsating Voltage – V Function .....18

Ω/Ω

7 Measuring Resistance – k

Function (METRISO BASE/TECH) .......19

8 Measuring Low-Value Resistance (up to 10 Ohm) – RLO Function 20

8.1

Measurement with Automatic Polarity Reversal – AUTO Function ........... 21

8.2 Measurement with Manual Polarity Reversal – MAN Function .....22

8.3 Taking Measurement Cables and Extension Cables into Account (up

to 10 Ohm) – ZERO Function (Roffset) ...........................................23

Insulation Measuring Instrument ............................................ 23

10 Characteristic Values .............................................................. 24

List of Abbreviations and their Meanings ..................................... 28

11

12 Maintenance ........................................................................... 28

12.1 Battery and Rechargeable Battery Operation ................................28

12.2 Fuses .............................................................................................29

12.2.1Fuse Link – FUSE Message ........................................................................ 29

12.2.2Electronic Fuse

12.3 Housing .........................................................................................30

.....................................................................................................30

13 Recalibration ........................................................................... 30

14 Appendix ................................................................................. 31

14.1 Sample Connection Layouts for Insulation Resistance Measurement ......31

14.2 Attaching the strap to the test instrument ....................................34

14.3 Attaching the Test Probe Holder to the Carrying Strap ................34

14.4 Technical Data for Measurement Cables

(scope of delivery: KS17-4 safety cable set) .................................35

14.5 Optional Accessories (not included) ..............................................36

14.5.1

Application Test Probe for Remote Triggering (Option Z550A) ................................36

15 Repair and Replacement Parts Service

Calibration Center and Rental Instrument Service ............................. 37

16 Product Support ...................................................................... 37

9 Test Resistor for Insulation Measurement for Checking the

6 GMC-I Messtechnik GmbH

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.

METRISO INTRO/BASE/TECH insulation and resistance measur­ing instruments allow for quick and efficient testing of protective
measures in accordance with DIN VDE 0100, ÖVE-EN 1 (Austria),
NIV/NIN SEV 1000 (Switzerland), and regulations specific to addi­tional countries.

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 the measurement of resistance at

earthing conductors, protective conductors and bond­ing conductors

Part 10: Combined measuring equipment for testing, measuring

or monitoring protective measures

As well as requirements per VDE 0701-0702:
Repair, modification and inspection of electrical appliances.

The test instrument is especially well suited for:

•Systems set-up

• 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 measure­ment cable:

• Floor covering electrostatic discharge capability

GMC-I Messtechnik GmbH 7

2 Safety Features and Precautions

!

XY123

2013-10

D-K

15080-01-01

Consecutive number

Registration number
Date of calibration (year – month)

Deutsche Akkreditierungsstelle GmbH – calibration lab

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 pur­pose, 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 ser­vice:

• 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 long periods 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 per­sonnel 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 ser­vice 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.

Meaning of Symbols on the Instrument

Warning concerning a source of danger
(attention: observe documentation!)

Protection class II device

CAT II/ III Device assigned to measuring categories

METRISO INTRO/TECH:
CAT I I 1000 V / CAT III 600 V / CAT IV 300 V
METRISO BASE:
CAT I I I 600 V / CAT IV 300 V

EC mark of conformity

The device and included batteries may not be dis­posed 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”.

Calibration Seal (blue seal):

See also “Recalibration” on page 30.

8 GMC-I Messtechnik GmbH

3 Initial Start-Up

Attention!

!

Attention!

!

Attention!

!

3.1 Battery test

Four different battery symbols, ranging from fully depleted to fully
charged, continuously indicate the momentary charge level in the
upper left-hand corner of the display

If battery voltage has fallen below the allowable lower
limit, the pictograph shown at the right appears. The
instrument does not function if the batteries have been depleted
excessively, and no display appears.

3.2 Installing or Replacing Batteries

New batteries must be inserted for initial start-up, or if only one
filled segment remains in the battery symbol.

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.

Ð Loosen both slotted screws for the battery compartment lid

on the back, and remove the lid.

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

teries with correct polarity in accordance with the symbols.

Make sure that all of the batteries are inserted with correct
polarity. If just one battery is inserted with reversed polar­ity, it will not be recognized by the instrument and may
result in leakage from the batteries.

Ð 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.

Ð Replace the battery compartment lid and retighten the

screws.

The instrument may only be placed into service if the
battery compartment lid is securely fastened!

GMC-I Messtechnik GmbH 9

3.3 Query and Set Device Parameters

info

SETUP

bAtt:
uers
ion

1nFo SET

Query Parameter ↓

rlead
APoFF
blight
bEEP
A.d
iSP

0..d
iSP

START

ENTER

Acknowledge

START

ENTER

Set Parameter ↓

←

Main Menus →

ESC

stby OFF

START

ENTER

ESC

stby OFF

– SETUP Function

Ð Turn the rotary switch to the SETUP position.

info appears at the display.

Ð Press ENTER to query battery voltage or firmware version.
Ð Then select the desired operating parameters with the scroll

keys and acknowledge by pressing the ENTER key.

The desired information is displayed in the scroll mode (moving
letters).

3.3.1 Paths to the Various Parameters

10 GMC-I Messtechnik GmbH

List of all parameters (alphabetical order)

Note

START

ENTER

START

ENTER

START

ENTER

START

ENTER

START

ENTER

Parame­ter

0.d iSP
A.d iSP
APoFF
bAtt

bEEP
blight

Com

1nfo
liled
SET
uErS

ion
rlead

Page: Header

13: 0.diSP – Show/Hide Leading Zeros

12: A.diSP – Analog Display: Select Display Mode

12: APoFF – Specified Time for Automatic Shutdown and Continuous ON

11: bAtt – Query Battery Voltage

12: bEEP – Acoustic Indication of Exceeded Limit Values

12: bLiGt – Switching LCD Illumination On/Off

For service purposes only

11: Querying Parameters – InFo Menu (as moving letters)

13: LiLEd – Optical Indication of Limit Value Violations

11: Entering Parameters – SEt Menu

11: vErSion – Query Firmware Version

11: rLEAd – Offset Resistance for Low-Resistance Measurement

3.3.2 Querying Parameters – InFo Menu (as moving letters)

bAtt – Query Battery Voltage

3.3.3 Entering Parameters – SEt Menu

rLEAd – Offset Resistance for Low-Resistance Measurement

Measurement cable ohmic resistance can be subtracted from the
measurement results automatically. Offset must be determined
and saved to memory via the rLEAd parameter to this end.

Ð Connect the measurement cables to the + and COM jacks.
Ð Short circuit the two test probes connected to the measure-

ment cables (including extension cables).

Ð Select the rLEAd parameter and acknowledge by pressing the

ENTER key. Select ZERO and acknowledge by pressing the
START key in order to trigger measurement of offset resistance:

 SET rlead

1nFo

zero / Clear 

Low-resistance measurement as described in section 8.1 is con­ducted in both directions with automatic polarity reversal.

If the test probes are not short circuited, the SHort LEAdS
prompt appears at the display.

1nFo bAtt: 12.05 V.

The measurement results, i.e. the resistance of the two measure­ment cables, are subtracted from future low-resistance measure­ments as an offset value, and ZERO appears in the footer.

After selecting the CLEAr parameter and acknowledging by

vErSion – Query Firmware Version

pressing the ENTER key, you’re provided with the opportunity of
performing future measurements without using the offset. If this is

1nFo bAtt:  uErS ion: 1.0.0

GMC-I Messtechnik GmbH 11

the case, ZERO is no longer displayed. In this case, measurement
cable resistance is included in the measurement.

APoFF – Specified Time for Automatic Shutdown and Continuous ON

START

ENTER

START

ENTER

START

ENTER

START

ENTER

START

ENTER

START

ENTER

START

ENTER

START

ENTER

START

ENTER

START

ENTER

START

ENTER

START

ENTER

Shutdown time APoFF can be specified with this parameter. The
instrument is switched off automatically if the measured value
remains unchanged for a long period of time and if none of the
keys or the rotary switch have been activated before specified
APoFF time (entered in minutes) has elapsed.

The selected on-time has as substantial influence on battery ser­vice life.

If the on setting is selected, the instrument is set for long-term
measurement and

ON appears at the display to the right of the

battery symbol. In this case, the instrument can only be switched
off manually.

bEEP – Acoustic Indication of Exceeded Limit Values

This parameter allows you to decide whether or not exceeded
limit values will be indicated acoustically.

on = acoustic indication activated

1nFo  SET rlead  ...  bEEP

on / off

(on = default setting)

 SET rlead  ... ...  APoFF

1nFo

10 ... 59 min on



A.diSP – Analog Display: Select Display Mode

One of two different display modes can be selected for the analog
display:

• bArG: bar graph

(10 minutes = default setting)

• Po int: pointer



1nFo

SET rlead  ...  A.d iSP

bLiGt – Switching LCD Illumination On/Off

Automatic deactivation of display illumination after xx seconds

bArG / Po int



(after the last time the rotary switch is actuated) can be selected in
order to extend the battery service life. As soon as a new measur­ing function is selected or started, illumination is reactivated.

(po int = default setting)

When set to oFF, illumination is permanently deactivated.

1nFo  SET rlead  ... ...  bligt

15 / 30 / 45 / 90 s off 

(15 seconds = default setting)

12 GMC-I Messtechnik GmbH