GOSSEN METRAWATT METRISO INTRO Datasheet

METRISO INTRO, BASE, TECH

High-Precision
Insulation, Low Resistance and Voltage Measurement Instrument

• Insulation measurement per EN 61557-2/VDE 0413, part 2

• Low-resistance measurement

• Intelligent filter: precise and measurement-dependent
activation for the measurement of very high resistances

• Digital and analog display, backlit

• Indication of dangerous contact voltage LED

• Acoustic signalling when limit value is exceeded

• Detection of interference voltage in switch position OFF*

• Overvoltage protection
Protects the instrument in the event of inadvertent connection
to mains power
– Fuse link for all resistance measuring ranges
– Electronic fuse for the protection of low resistance

and resistance measurement R

• Compact and rugged for service calls under harsh conditions

METRISO INTRO/TECH:

Voltage testing and measurement up to 1000 V

METRISO BASE/TECH:
One measuring point self-test with test resistance of 10 M

per IEC/HD 60364-6 / EN 50110

per EN 61557-4/VDE 0413, part 4

and R

LO

3-349-810-03

1/12.14

German
Accreditation Body
D-K-15080-01-01

Applications

METRISO INTRO/BASE/TECH insulation and resistance measur­ing instruments allow for quick and effective testing of protective
measures in accordance with DIN VDE 0100, ÖVE-EN 1 (Austria),
NIV/NIN SEV 1000
countries as well. The instruments are equipped with a micropro­cessor and comply 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 conduc-

tors, 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 insulation measuring instruments are suitable for the following
tasks:

• Measurement of insulation resistance at voltage-free
devices and systems, up to 1000 V depending upon variant

• Testing of the resistance of earthing conductors, protective
conductors and equipotential bonding

• Checking of test objects for absence of voltage

• Testing of electrostatic discharge capacity at floor coverings
(using shielded measurement cables) – EN 1081

(Switzerland), and regulations specific to other

Features Overview of Both Instrument Variants

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 ... 10 k

RLO 0.17 ... 10 

U 10 ... 1000 V

U 10 ... 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 III 600 V / CAT IV 300 V
10 M test resistor
DAkkS calibration certificate

✓

—

✓
✓ —
✓

✓

R

INS RLORINS RLORINS RLO

—

✓
✓

✓
✓

✓ —
✓

—
—

—

✓✓
✓✓

✓✓

✓✓

✓✓

✓✓
✓✓

✓✓
✓✓

✓✓
✓✓
✓✓

✓

✓

✓

GMC-I Messtechnik GmbH

METRISO INTRO, BASE, TECH

100

Ux/V

R

x

/k

U

N

= 100 V

0

20

40

60

80

100

250

Ux/V

Rx/k

U

N

= 250 V

0

50

100

150

200

250

0

100

200

300

400

500

500

U

N

= 500 V

Ux/V

Rx/k

0

200

400

600

800

1000

1

U

N

= 1000 V

Ux/V

Rx/M

High-Precision
Insulation, Low Resistance and Voltage Measurement Instrument

Characteristic Values

Meas.

Qty.

RINS

U

AC/

DC

RLO 10  0.17 ... 9.99 

R

1)

Display range up to 600 V

2)

Display range up to 1.2 kV

3)

the indicated accuracy is only achieved with the shielded high-resistance
measuring cable KS-C (article no. Z541F)“

UiSO Range Measuring Range

100 k 10.0 k ... 99.9 k 0.1 k

1 M 100 k ... 999 k 1 k

10 M 1.00 M ... 9.99 M 10 k

BASE/TECH: 50 V

BASE/TECH: 100 V

INTRO: 250 V ... 1000 V

BASE: 250 V / 500 V

METRISO BASE

METRISO INTRO

METRISO TECH

METRISO BASE
METRISO TECH

Display range as of 01.0

100 M 10.0 M ... 99.9 M 100 k

1 G 100 M ... 999 M 1 M

10 G 1.00 G ... 9.99 G 10 M

100 G 10.0 G ... 99.9 G 100 M (8% rdg. + 3 d) 3)(10% rdg. + 3 d)

TECH: 250 V / 500 V / 1000 V

200 G 100 G ... 199 G 1 G (25% rdg. + 5 d) 3)

100 V 10.0 V ... 99.9 V 0.1 V
500 V 100 V ... 510 V
100 V 10.0 V ... 99.9 V 0.1 V

1000 V 100 V ... 999 V

100  10.0 ... 99.9  0.1 

1 k 100 ... 999  1 



10 k 1.00 ... 9.99 k 10 

Reso­lution

1)

1 V

2)

1 V

0.01 4 V < U0

Open-Circuit

Voltage U

50 V /100 V:

1.25 U

250 V /
500 V /

1000 V:

1.1 U

— (2.5% rdg. + 3 d) (5% rdg. + 3 d)

— (2.5% rdg. + 3 d) (5% rdg. + 3 d)

< 6 V

U0 max. 15 V

4)

5)

Te st

Current

0max

ISO

IN = 1 mA

I

 5 mA

K

ISO

200 mA  I

I  260 mA

1 mA  I

I  1,3 mA

does not conform to DIN EN 61557-2
up to 5 

Intrinsic Uncertainty

(5% rdg. + 3 d) (7% rdg. + 3 d)

(2.5% rdg. + 3 d) (5% rdg. + 3 d)

(2.5% rdg. + 3 d) (5% rdg. + 3 d)

Measuring

Uncertainty

(50% rdg. + 20 d)

Overload
Capacity

METRISO BASE:
600 V AC/DC

METRISO INTRO
METRISO TECH:

3)

3) 4)

600 V AC/DC

1000 V AC/DC

METRISO BASE:

600 V AC/DC

METRISO INTRO
METRISO TECH:

1000 V AC/DC TRMS

METRISO BASE:

600 V AC/DC

METRISO TECH

1000 V AC/DC TRMS

TRMS

TRMS

TRMS

TRMS

TRMS

TRMS

Voltage at Device Under Test During Insulation Resistance Measurement

Measuring voltage Ux at the device under test depending upon its resistance Rx at nominal voltages of 100, 250, 500 and 1000 V:

Intelligent Filter

Measurement-dependent and precise activation for the measurement of very high resistances with:

• beating, i. e. compensation of 16

• attenuation of capacitive influences from power cables, etc.

• suppression of electric field influences

2 GMC-I Messtechnik GmbH

2

/3Hz and 50 Hz interference

METRISO INTRO, BASE, TECH

M Vk

TRMS

AC

DC

Rlo>10%

MAN

DATA

ZERO

G

ISO

2500V

1000V

Tk

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

!

High-Precision

Insulation, Low Resistance and Voltage Measurement Instrument

Reference Conditions

Reference
temperature + 23 C 3 K

Relative humidity 40 ... 75%
Measured quantity

frequency 45 Hz ... 65 Hz
Measured quantity

waveshape Sine, deviation between TRMS and recti-

fied value < 1%
Battery voltage 9.5 V 0.1 V
Test resistor 10 M1%

Electrical Safety

Protection class II
Pollution degree 2
Measuring category METRISO INTRO/TECH:

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

METRISO BASE

:

CAT II I 600 V / CAT IV 300 V
Fuses
Fuse link FF315mA/1000V, effective in all resis-

tance measuring ranges, 1 additional

replacement fuse in the battery compartment
Elektronic fuse for protecting low-resistance and resis-

tance measurement R

(not METRISO G500MM (M550K))

and R

LO

Ambient Conditions

Accuracy
temperature range 0 ... +40 C

Operating
temperature –10 ... +50 C

Storage temp. range –25 ... +70 C (without batteries)
Relative humidity Up to 75% (max. 85% during storage/

Elevation Max. 2000 m
Calibration interval 1 year (recommended)

transport), no condensation allowed

Displays

Digital Display With additional bar graphs or pointer

depending on selection with a.disp
parameter, backlit (transflective);
leading zeros can be suppressed at the
digital display depending on selection with

0.disp parameter;
overranging indicated with 0L at display;
dimensions: 65 x 36 mm

Cable resistance

If measurement results for the two direc­tions of current flow (polarity reversal) differ
by more than 10% (this corresponds to
typical measuring error for the instru­ments), both measured values are dis­played next to each other with reduced
resolution.

Limit LED LED lights up red to indicate an exceeded

limit value
LED lights up green to indicate adherence
to the limit value

LED LED lights up red to indicate:

at LCD Detection of external voltage at the LCD

– the presence of an external voltage

bevore insulation testing

(U > 50 V)
with the device switched on or off
(device switched off not with M550N)

– the presence of the test/measuring voltage

during (insulation) measurement (U > 50 V)
the presence of a residual voltage
after insulation testing (U > 50 V)
with the device switched on or off

with the device switched on where U DC >
50 V and U AC > 40 V (50 Hz) for all mea­suring functions

Mechanical Design

Electromagnetic Compatibility (EMC)

Interference emission EN 61326-1:2006 class B
Interference immunity EN 61326-1:2006

GMC-I Messtechnik GmbH 3

Dimensions 225 x 130 x 140 mm
Weight Approx. 1.4 kg with batteries
Protection Housing: IP 52, measurement cables and

connectors: IP 40 per DIN VDE 0470, part
1 / EN 60529, housing category 2

Extract from table on the meaning of IP codes

(1

IP XY

st

Protection Against Foreign

digit X)

2  12.5 mm dia. 2 Dripping (at 15° angle)
3  2.5 mm dia. 3 Spraying water
4  1.0 mm dia. 4 Splashing water
5 Dust protected 5 Jet-water
6 Dust-proof 6 Powerful water jets

Object Entry

IP XY

(2nd digit Y)

Protection Against

Penetration by Water

METRISO INTRO, BASE, TECH

High-Precision
Insulation, Low Resistance and Voltage Measurement Instrument

Power Supply

Batteries 8 ea. 1.5 V mignon cell (8 ea. size AA)

Nominal range of use 8.5 ... 12 V
Battery test Battery capacity display with battery sym-

Battery saver circuit Automatic shutdown of display illumination

Service life For R

Safety shutdown If supply voltage is too low, the instrument

(alkaline manganese per IEC LR14)

bol in 4 segments: .
Querying of momentary battery voltage via
menu function.

after 15 second s (after the last time the
rotary switch is actuated) can be set via
the blight parameter.
The test instrument is automatically switched
to the standby mode* when the measured
value remains unchanged and none of the
controls are activated during this time.

* Specified time “APoFF” (entered in minutes)

adjustable via SETUP menu (default setting
approx. 10 min).

(1000 V / 1 M) and RLO with 20

INS

seconds on-time and 1 measurement
each for a duration of 5 seconds:
– With batteries (alkaline manganese):

900 measurements

– With rechargeable batteries (2200 mAh):

850 measurements

is switched off, or cannot be switched on.
When the rotary switch is set to the OFF
position, the instrument is completely dis­connected from the batteries (after
approximately 10 seconds).

Scope of delivery

1 Insulation and resistance measuring instrument
1 DAkkS calibration certificate (not METRISO INTRO)
1 Set batteries (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

Accessories (not included)

ISO Kalibrator 1

Calibration adapter for the
rapid, efficient testing of
the accuracy of measur­ing instruments for insula­tion resistanced and low­impedance resistances.

Cable Set KS-C

Cable set consisting of
measurement cable and
high resistance measuring
cable, for measurements
in the G- range.

Applicable Regulations and Standards

IEC 61010-1 / EN 61 010-1/
VDE 0411-1

DIN EN 61557 / VDE0413 Part 1:2007-12 General requirements

EN 1081 Testing of electrostatic discharge capacity for floor cover-

EN 60529
VDE 0470, part 1

DIN EN 61326-1
VDE 0843-20-1

Safety requirements for electrical equipment for mea­surement, control and laboratory use
– General requirements

Part 2:2008-02 Insulation resistance measuring

instruments

Part 4:2007-12 Instruments for measuring

resistance at earthing conductors,
protective conductors
and equipotential bonding

Part 10: 2001-12 Combined measuring equipment

for testing, measuring or
monitoring protective measures

ings in potentially explosive atmospheres
Test instruments and test procedures

Degrees of protection provided by enclosures (IP code)
Electrical equipment for measurement, control and labo-

ratory use – EMC requirements –
Part 1: General requirements

Cable Set KS24

Cable set KS 24 consists
of a 4 m long extension
cable with a permanently
mounted test probe at one
end and a contact pro­tected socket at the oppo­site end, as well as an alli­gator clip for plugging onto
the test probe.

4 GMC-I Messtechnik GmbH

METRISO INTRO, BASE, TECH

Measurement key

Key for

Measuring point illumination

measuring point illumination

Safety cap

Safety collar

Test pro be

Connection example: module slot for INTRO / BASE / TECH / PRO / XTRA

Movable contact pro­tection securely cov­ers the magnetic con­tact by eleastic force

magnetic
strain relief

High-Precision

Insulation, Low Resistance and Voltage Measurement Instrument

Telearm 1

Reel TR25

Test Probe for Remote Triggering Z550A

Floor Probe

The 1081 floor probe can
be used for measuring the
resistance of insulating
floors in accordance with
DIN VDE 0100 Part 600
and EN 1081.

The test probe with integrated control module allows for remote
triggering in areas with difficult access or in situations which
require your full attention. Poorly lit measuring points can be ilumi­nated with the integrated test probe lighting. The connection
cable is shielded from interfering influences.

Magnetic measuring contacts (patent) with magnetic strain relief (Z502U)

Drum with Measurement Cable TR50

50m measurement cable
coilded around a metal drum.
Connection to one end of the
cable is accomplished with a
jack which is integrated into
the drum. The other end is
equipped with a banana plug.
The drum axle with handle can
be removed for space saving
storage.
Cable resistance component
can be compensated for in
selector switch position R

LO

.

GMC-I Messtechnik GmbH 5

METRISO INTRO, BASE, TECH

High-Precision
Insulation, Low Resistance and Voltage Measurement Instrument

Operating Case METRISO G (Z550C)

Order Information

Description Type Article number

Insulation measuring instrument for DIN VDE 0100, ÖVE-EN 1 (Austria) and NIV/NIN SEV
1000 (Switzerland), complies with IEC/EN 61 557/VDE 0413, parts 1, 2, 4 and 10

Test voltages from 50 V to 1000 V,
voltage measurement to 1000 V,
including low-resistance measure­ment METRISO TECH M550P

METRISO TECH
for Remote Triggering (Z550A) and
Operating Case (Z550C)

Test voltages from 50 V to 500 V,
voltage measurement to 500 V,
including low-resistance measure­ment METRISO BASE M550O

METRISO BASE
for Remote Triggering (Z550A) and
Operating Case (Z550C)

inclusive Test Probe

METRISO TECH-Set M551P

inclusive Test Probe

METRISO BASE-Set M551O

Description Type Article number

Test voltages from 250 V to 1000 V,
voltage measurement to 1000 V,
including low-resistance measure­ment METRISO INTRO M550N

METRISO INTRO
for Remote Triggering (Z550A) and
Operating Case (Z550C)

Accessories (not included)

Calibration adapter for testing the accu­racy of instruments used for measuring
insulation resistance and low-resistance
for test voltages of up to 1000 V (per
VDE 0413, parts 1, 2 and 4).

Cable set consisting of measure­ment cable and shielded high-resis­tance measurement cable for mea­surements in the G range KS-C Z541F

Alligator
and KS-C

Cable set consisting of a 4 m long
extension cable with a permanently
attached test probe at one end and a
contact protected socket at the other
end, and 2 alligator clips which can
be plugged onto the test probe KS24 GTZ3201000R0001

Triangular probe for floor measure­ments per EN 1081, DIN VDE 0100­600 (Standing-Surface Insulation) 1081 probe GTZ3196000R0001

Telescoping rod for PE measurement Telearm 1 GTZ3232000R0001
Reel with 25 m measurement cable TR25 reel GTZ3303000R0001
Drum with 50 m measurement cable TR50 drum GTY1040014E34
Test probe with START/STOP key and

an additional key for illuminating the
measuring point, including shielded
cable and test probe holder for car­rying belt

Magnetic Measuring contacts with
contact protection – Set with mag­netic holder, measurement contacts
5,5 mm in diameter insulated,
CAT III 1.000 V / 4 A, temperature
between –10 °C and 60 °C, under
standard conditions and flat-head
screws holding force 1.200 g verti­cal to contact area;
measuring instrument connector:
angled multilam plug according (for
METRISO G series)

Operating case for
BASE / TECH / PRO / XTRA with
outer bag for measuring leads

inclusive Test Probe

clips (1 pair) for KS17-4

METRISO

INTRO /

METRISO INTRO-Set M551N

ISO calibrator 1 M662A

KY-95-3 Z110J

Test Probe
for Remote Triggering
METRISO G Z550A

Set 1 – Magnetic Mea­suring Tips Z502U

Operating Case
METRISO G Z550C

For additional information regarding accessories please refer to

• www.gossenmetrawatt.com

Edited in Germany • Subject to change without notice • PDF version available on the Internet

GMC-I Messtechnik GmbH
Südwestpark 15
90449 Nürnberg, Germany

Phone: [phone]
Fax: [phone]
e-mail: [e-mail]
www.gossenmetrawatt.com