Gossen MetraWatt METRA HIT 22S Bedienungsanleitung

METRA HIT

22S/M, 23S, 24S, 25S, 26S/M/MIL

Analog Digital Multimeter

with Signalgenerator 3-348-984-03

13/3.06

Operating Instructions

2 GMC-I Gossen-Metrawatt GmbH

1LCDisplay

2MENU/ON|OFF ON / OFF key

Operating Mode Menu :Entry acknowledgment (ENTER or ↵)

3DATA|CLEAR function key for holding, comparing, deleting

measurement value and MIN/MAX

Operating Mode Menu: Individual menu item selection

reverse flux direction,

increase values

4MAN|AUTO Manual measuring range selection key

Operating Mode Menu: Individual menu item selection

forward flux direction,

reduce values

5ESC|FUNC Multifunction key

Operating Mode Menu: Exit menu level and

return to next highest level,

exit parameter entry mode

without storage of values

6Rotary switch for measurement functions

7 Connection jacks with automatic blocking

→ chapter 4

→ chapter 2

→ chapter 5

→ chapter 3

→ chapter 7

ff.

→ chapter 3

* RMS value measurement with METRA HIT 26S/M/MIL and 25S only

** METRA HIT 22S/M: no current measuring range – with clip only

max.

1000 V ! METRA HIT 23S:

16 A unfused!

GMC-I Gossen-Metrawatt GmbH 3

Digital Display Symbols

1 Continuous operation

2 Digital display with display of decimal point and polarity

3 Manual measuring range selection

4 Memory display, “hold measurement value”

5MIN-MAXstorage

6Eventmarking

7 Selected current type

8 Unit of measure

9 Measuring range exceeded

10 Pointer for analog display

11 Analog display scale

12 Violation of negative analog display range

13 Stopwatch activated

14 Zero balancing

15 Memory mode

16 Low battery

17 Acoustic signal on

Meaning of symbols on the instrument

Warning concerning a point of danger

(Attention: observe documentation)

Earth

Continuous, doubled or reinforced insulation

CAT II/III/IV

Measurement category II / III and/or IV device

CSA approval mark

(North American test authority)

Indicates EC conformity

This device 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’.

123 7

910

1112

15 REM

456

Consecutive number

Registration number

Date of calibration (year – month)

German calibration service – calibration laboratory

B0730

01-04

DKD-K-

19701

4 GMC-I Gossen-Metrawatt GmbH

Contents

Page

1 Safety Features and Precautions .................................... 6

2 Initial Start-Up ................................................................. 8

3 Selection of Measurement Functions and

Measuring Ranges ........................................................ 10

3.1 Automatic Measuring Range Selection .............................. 10

3.2 Manual Measuring Range Selection .................................. 10

3.3 Quick Measurements ....................................................... 11

4 LC Display ..................................................................... 11

4.1 Digital Display ................................................................. 11

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

5 Measurement Value Storage, “DATA Function”

(Hold & Compare) .......................................................... 12

6 Minimum and Maximum Value Storage

“MIN-MAX” with Time Stamp ....................................... 13

7 Voltage Measurement ................................................... 14

7.1 Transient Overvoltages ..................................................... 15

7.2 Voltage Measurements for Greater than 1000 V ................ 15

8 Alternating Voltage Level Measurement (dB) ................ 16

9 Current Measurement with METRA HIT 23/24/25/26 .... 17

9.1 AC Measurement with Current Transformers ..................... 18

9.1.1 mA or A Transformer Output (METRA HIT 23/24/25/26) .... 18

9.1.2 Transformer Output mV/A) ............................................... 19

10 Resistance Measurement .............................................. 20

11 Continuity Testing for Resistance Measurement .......... 20

12 Diode Testing ................................................................ 21

13 Continuity Testing for Diode Tests ................................ 22

14 Signal Generator ........................................................... 22

15 Capacitance Measurement ........................................... 24

16 Frequency Measurement .............................................. 24

17 Temperature Measurement .......................................... 25

18 Event Counting and Zero Crossings .............................. 26

18.1 Event Counting ................................................................ 26

18.2 Count Zero Crossings ...................................................... 27

19 Stopwatch ..................................................................... 27

20 Storing Measurement Values

with the METRA HIT 22M/26M/MIL ............................... 28

20.1 General Parameters ......................................................... 30

20.2 Trigger Functions ............................................................ 31

20.2.1 Trigger Function Parameters ............................................ 32

21 Setting the Measurement Parameters .......................... 38

21.1 Description of Items in the SEt .Menu . ............................ 40

GMC-I Gossen-Metrawatt GmbH 5

Page

21.1.1 rAtE – Sampling Rate ..................................................... 40

21.1.2 Menu – Rapid Query ...................................................... 40

21.1.3 tiME – Time and Date .................................................... 40

21.2 Description o Parameters in the inFo Menu ...................... 41

21.3 Default Settings ............................................................... 41

21.4 List of All Parameters ...................................................... 42

22 Data Transmission via RS232 Interface ........................ 43

22.1 Activating the Interface .................................................... 43

22.2 Selecting Interface Parameters ......................................... 44

23 Accessories ................................................................... 45

24 Characteristic Values ................................................. 46

25 Maintenance ................................................................. 54

25.1 Batteries ......................................................................... 54

25.2 Fuses ............................................................................. 56

25.3 Housing .......................................................................... 56

26 Multimeter Messages ................................................... 57

27 Accessories ................................................................... 57

27.1 General ........................................................................... 57

27.2 Characteristic Values of Measuring Cables

(Scope of Supply of Safety Cable Set KS17-2) ................... 57

28 Repair and Replacement Parts Service

DKD Calibration Lab

and Rental Instrument Service ...................................... 58

29 Guarantee ...................................................................... 59

30 Product Support ............................................................ 59

Use for Intended Purpose:

– The multimeter described herein is a portable instrument

which can be held in one hand during measurements.

– Only such measurements are performed as described in

chapters 7 to 19.

– The measuring instrument including measuring cables

and plug-on test probes is only used within the measur-

ing category indicated (refer to page 52 and/or page 53

and to the table on page 6 for the meaning of the mea-

suring categories).

– The limits of the overload capacity may not be exceeded.

Refer to the Characteristic Values on page 48 for the

duration and values of the overload capacity.

– Measurements are only performed within the specified

ambient conditions. Refer to page 53 for the operating

temperature range and relative humidity.

– The measuring instrument is only used in accordance

with the specified protection type (IP code), see page 53.

6 GMC-I Gossen-Metrawatt GmbH

1 Safety Features and Precautions

You have selected an instrument which provides you with a

high level of safety.

This instrument fulfills the requirements of the applicable

European and national EC guidelines. We confirm this with

the CE marking. The relevant declaration of conformity can

be obtained from GMC-I Gossen-Metrawatt GmbH.

The analog digital multimeter is manufactured and tested in

accordance with safety regulations IEC 61010–1:2001 /

DIN EN 61010–1:2001 / VDE 0411–1:2002. When used

for its intended purpose (see page 5), safety of the opera-

tor, as well as that of the instrument, is assured. Their

safety is however not guaranteed, if the instrument is used

improperly or handled carelessly.

In order to maintain flawless technical safety conditions, and to

assure safe use, it is imperative that you read the operating

instructions thoroughly and carefully before placing your instru-

ment into service, and that you follow all instructions contained

therein.

For your safety, as well as for the protection of your instru-

ment, the multimeter is equipped with an automatic socket

blocking device. This is coupled to the rotary switch, and

only allows connection to the socket required for the

selected function. It also prevents the switching of the

rotary selector to disallowed functions when a measure-

ment cable is plugged into a socket.

The following special multimeter is not covered by the new safety

standard: METRA HIT 23S.

Measuring Categories and their Meaning per IEC 61010-1

The measurement category and the relevant maximum

rated voltage (e. g. 600 V CAT III) which are shown on the

instrument casing apply to your measuring instrument.

CAT Definition

Measurements in electrical circuits not directly connected to

the mains system:

e. g. power systems in motor vehicles or aeroplanes, batteries ...

Measurements in electrical circuits directly connected to the

low-voltage system:

via plug, e.g. in households, offices, laboratories ...

III

Measurements in facility installations:

stationary consumers, distributor connections, devices

attached to a distributor

IV Measurements at the source of low-voltage installations:

Meters, main terminal, primary overcurrent protection devices

GMC-I Gossen-Metrawatt GmbH 7

Observe the following safety precautions:

• The instrument may only be operated by persons who

are capable of recognizing contact hazards and taking

the appropriate safety precautions. Contact hazards

exist anywhere, where voltages of greater than 33 V may

occur (effective value).

• Avoid working alone when taking measurements which

involve contact hazards. Be certain that a second person

is present.

•The maximum allowable voltage

between the jacks (7) and earth

is 1000 V for category III and 600 V for category IV

Exception METRA HIT 23S: 1000 V Categorie II only.

•Nominal line voltage may not exceed the following values:

– Between conductor and neutral: 600 V

– 690 V between phase conductors in 4-wire 3-phase

systems

– 1000 V between phase conductors in 3-wire 3-phase

systems.

• Be prepared for the occurrence of unexpected voltages

at devices under test (e.g. defective devices). For exam-

ple, capacitors can be dangerously charged.

• Make certain that the measurement cables are in flaw-

less condition, e.g. no damage to insulation, no interrup-

tions in cables or plugs etc.

• No measurements may be made with this instrument in

electrical circuits with corona discharge (high-voltage).

• Special care is required when measurements are made

in HF electrical circuits. Dangerous pulsating voltages

may be present.

• Measurements under moist ambient conditions are not

allowable.

• Be absolutely certain that the measuring ranges are not

overloaded beyond their allowable capacities. Limit val-

ues can be found in the table “Measuring Ranges” in

chapter 24 “Characteristic Values”.

• All current ranges are equipped with fuses, except for

METRA HIT 23S (which has no 16 A fuse in the 3 und

16 A measuring ranges).The maximum permissible

voltage of the measuring circuit (= nominal voltage of the

fuse) is 1000 V AC/DC in the „mA“ and „A“ ranges.

8 GMC-I Gossen-Metrawatt GmbH

•METRA HIT 23S has been optimized for measurements in

secondary current transformer circuits and has no inte-

grated fuse in the 16 A current circuit for reducing hazards in

the event of short circuits on the primary side.

In circuits with voltages involving contact hazards

METRA HIT 23S may only be used if the current circuit is

protected by a fuse or a circuit breaker with 20 A.

METRA HIT 23S must not be used for current measure-

ments in the 16 A current circuit (rotary swith „A“) in

application category III and IV.

Repair, Parts Replacement and Balancing

When the instrument is opened, voltage conducting parts

may be exposed. The instrument must be disconnected

from the measuring circuit for repair, replacement of parts

or balancing. If repair or balancing of a live, open instru-

ment is required, this may only be carried out by trained

personnel who are familiar with the dangers involved.

Errors and Extraordinary Strains

If it may be assumed that the instrument can no longer be

operated safely, it must be removed from service and

secured against unintentional use.

Safe operation can no longer be relied upon,

• if the instrument demonstrates visible damage,

• if the instrument no longer functions,

• after a long period of storage under unfavorable condi-

tions, (e.g. high humidity, dust or excessive temperature),

see "Ambient Conditions", page 53.

2 Initial Start-Up

Batteries

Please refer to chapter 25.1 regarding correct batteries

installation!

Attention!

Before opening the instrument, disconnect it from

the measuring circuit.

Switching the Instrument On Manually

➭Press the ON key until the display disappears.

Activation is acknowledged with a brief acoustic signal.

As long as the key remains pressed, all segments of the

liquid crystal display (LCD) are active. The LCD is shown

on page 3.

After the key is released, the instrument is ready for

operation.

METRA HIT 22S: Press key until LCD appears.

GMC-I Gossen-Metrawatt GmbH 9

Switching the Instrument On via PC (except for METRA HIT 22S)

After transmission of the first data block from the PC, the

multimeter is switched on. See also chapter 22, page 43.

Automatic Start-Up

The multimeter is switched on automatically in the transmit

or data storage mode.

Note!

☞Electrical discharge and high frequency interference

can cause incorrect displays, and may block the

measuring sequence. To reset, switch the instru-

ment off, and then back on. If this procedure is

unsuccessful, briefly disconnect the battery from the

contact terminals.

Setting Time and Date

See chapter 21.1.3, page 40.

Switching the Instrument Off Manually

➭Press and hold the ON key, until the display is deacti-

vated.

Deactivation of the instrument is acknowledged by two

brief acoustic signals.

Automatic Shut-Off

Your instrument shuts itself off automatically, if the mea-

surement value remains constant for a long period of time

(maximum measurement value fluctuation: approx. 0.8%

of the measuring range per minute or 1 °C or 1 °F per

minute), and if none of the keys or the rotary switch are

activated for a period of 10 minutes. Deactivation of the

instrument is acknowledged by a brief acoustic signal.

Exceptions are as follows:

Event counting, stopwatch, transmit or memory mode and

continuous operation.

Disabling Automatic Shut-Off

The instrument can also be switched to

“CONTINUOUS ON”.

➭Simultaneously press the ON key and the multifunction

key ESC|FUNC when switching the instrument on. The

“CONTINUOUS ON” function is indicated at the LCD

with the symbol.

10 GMC-I Gossen-Metrawatt GmbH

3 Selection of Measurement Functions and

Measuring Ranges

The rotary switch is coupled to the automatic socket

blocking device, which makes two jacks available for each

function. Before switching to the “mA” or “A” functions, or

out off the “mA” or “A” functions, be certain that the plug

has been removed from the corresponding jack. The

socket blocking device prevents inadvertent switching to

disallowed functions when a plug connection exists.

3.1 Automatic Measuring Range Selection

The multimeter is equipped with automatic measuring

range selection for all measuring ranges, except for tem-

perature measurement, as well as diode and continuity

testing. This automatic feature is active as soon as the

instrument is switched on. The instrument automatically

selects the measuring range which provides optimum res-

olution for the measured quantity.

The previously selected voltage measuring range remains

active after switching the instrument to frequency mea-

surement or events counting.

The instrument is automatically switched to the next high-

est or next lowest measuring range for the following mea-

sured quantities:

1) 280 digits apply when switching from 100 kHz to 3 kHz

3.2 Manual Measuring Range Selection

The automatic measuring range feature can be deactivated

and the ranges can be manually selected and prescribed

according to the following table.

The manual mode is deactivated by pressing and holding

the MAN|AUTO key (approx. 1s), by activating the rotary

switch or by switching the instrument off and back on again.

Measuring Range Reso-

lution

Switching to the

Next Highest

Range

at ±(... D + 1 D)

Switching to the Next

Lowest Range 1)

at ±(... D –1 D)

V,V,A,

mA , A , Ω, 30

mF, Hz

4 ¾ 31 000 2 800

3 nF ... 3 mF 3 ¾ 3 100 280

⇓

MAN/

AUTO

Function

Acknowledge

Dis-

play

Acoust.

Signal

Brief Manual Mode Active:

selected measuring range is fixed MAN 1 x

Brief

Switching Sequence for:

V: 300 mV →3V→30 V →300 V →1000 V →

300 mV → ...

dB: same switching sequence as for V

mA : 300 μA→3mA→30 mA →300 mA →300 μA ...

A: 3A→10 A → 3 A ...

Ω:30MΩ→300 Ω→ 3kΩ→30 kΩ→ 300kΩ→

3MΩ→30 MΩ...

F: 3nF→30 nF →300 nF →3 μF→30 μF→

300 μF→3000 μF→30000 μF→3 nF ...

Hz: 300 Hz →3kHz→100 kHz →300 Hz ...

MAN 1 x

Long Return to Automatic Range Selection — 2 x

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