Gossen MetraWatt METRA HIT 22S User manual

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
1
2
3
4
5
6
7
7 **
*
→ chapter 4
→ chapter 2
→ chapter 5
→ chapter 3
→ chapter 7
ff.
→ chapter 3
→ 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!

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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
8
910
1112
13
16
17
14
15 REM
456
!
Consecutive number
Registration number
Date of calibration (year – month)
German calibration service – calibration laboratory
B0730
01-04
DKD-K-
19701

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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

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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.

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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
I
Measurements in electrical circuits not directly connected to
the mains system:
e. g. power systems in motor vehicles or aeroplanes, batteries ...
II
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

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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.

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•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.

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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.

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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