Gossen MetraWatt METRAport 32 XS Operating Instructions Manual
METRAport
32 XS
Digital Multimeter
3-349-281-02
6/3.04
Operating Instructions
2 GOSSEN METRAWATT GMBH
Control Elements
1LCD
2 Battery compartment cover
3 “Max. 15 A (max. 5 min)” connector jack for highest current range
4 “Max. 300 mA” connector jack for mA range
5 Connector jack for all measuring ranges except current measuring ranges
6“⊥” connector jack for all measuring ranges
7 OFF/ON: ON/OFF switch
8 Resettable miniature circuit breaker (AUTO FUSE)
9 Rotary switch for function selection
10 Eyelet for carrying strap
11 MAN/AUTO: Key for manual and automatic measuring range selection
12 DATA and MIN/MAX: Key for measured value storage
13 FUNC: Multifunction key
3
4
5
6
1
2
7
9
10
12
13
11
8
3
4
5
6
GOSSEN METRAWATT GMBH 3
Digital Display Symbols
1 Continuous operation
2Low battery
3 Digital display with indication of decimal place and polarity
4 Manual measuring range selection
5 Display memory, “freeze measured value”
6MIN-MAX storage
7 Selected current type, DC
() or AC (~)
8Unit of measure
9Over-ranging
10 Pointer for analog display
11 Analog display scale
12 Resistance thermometer: Pt100 / Pt1000
13 Negative analog display range exceeded
14 Zero balancing active
15 Acoustic signal activated (e.g. for continuity testing)
134
7
8
9101113
14
15
5 62
12
4 GOSSEN METRAWATT GMBH
Contents......................................................................................................................... Page
1 Safety Features and Precautions ............................................................................5
2 Initial Start-Up .........................................................................................................7
3 Selecting Measuring Functions and Measuring Ranges .........................................8
3.1 Automatic Measuring Range Selection ........................................................................8
3.2 Manual Measuring Range Selection – MAN/AUTO Key .................................................8
3.3 Quick Measurements .................................................................................................9
4 Display (LCD) ...........................................................................................................9
4.1 Digital Display ...........................................................................................................9
4.2 Analog Display ..........................................................................................................9
5 Measured Value Storage – DATA / MIN-MAX Key .................................................10
5.1 DATA (hold / compare) .............................................................................................10
5.2 Storage of Minimum and Maximum Values “MIN-MAX” with Time Stamp ....................11
6 Voltage Measurement ...........................................................................................12
6.1 Transient Overvoltages .............................................................................................13
6.2 Measuring Voltages of Greater than 300 V ................................................................13
7 Current Measurement ...........................................................................................13
7.1 Current Measurement with Current Transformers with Voltage Output ........................15
8 Resistance Measurement ......................................................................................16
9 Continuity Testing .................................................................................................16
10 Diode Testing ........................................................................................................17
11 Capacitance Measurement ...................................................................................18
12 Frequency Measurement ......................................................................................18
13 Temperature Measurement with Pt100 and Pt1000 .............................................19
14 Characteristic Values .........................................................................................20
15 Maintenance .........................................................................................................26
15.1 Batteries .................................................................................................................26
15.2 Fuses ......................................................................................................................26
15.3 Housing ..................................................................................................................27
16 Multimeter Messages ...........................................................................................27
17 Repair and Replacement Parts Service
DKD Calibration Lab and Rental Instrument Service .............................................28
18 Product Support ....................................................................................................28
GOSSEN METRAWATT GMBH 5
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 GOSSEN METRAWATT GMBH.
The analog/digital multimeter has been manufactured and tested in accordance
with safety regulations IEC 61010–1:2001/DIN EN 61010–1:2001/VDE 0411–
1:2002. If used for its intended purpose, safety of the operator, as well as that of
the instrument, is assured. However, safety cannot be guaranteed if the instrument is used improperly or handled carelessly.
In order to maintain flawless technical safety condition, and to assure safe use, it is
imperative that you read the operating instructions thoroughly and carefully before placing your instrument into service, and that you follow all instructions contained therein.
For your safety, as well as for protection of your multimeter, the instrument is
equipped with a miniature circuit breaker for the 15 A current measuring range.
Observe the following safety precautions
• The instrument may only be operated by persons who are capable of recognizing contact hazards and implementing appropriate safety precautions.
Contact hazards exist anywhere, where voltages of greater than 33 V RMS
may occur.
• Avoid working alone when taking measurements which involve contact
hazards. Be certain that a second person is present.
• Maximum allowable voltage between terminals (3), (4), (5), (6) and ground is equal to
300 V, category I I.
• The current measuring range A is equipped with a magnetic circuit breaker.
Max. allowable voltage at the meas. circuit (= miniature circuit breaker nominal
voltage) is equal to 240 V~ (AC) and 50 V (DC) against earth in the “mA”
and “A” ranges.
• The instrument may only be used for current measurement in power systems if the
electrical circuit is protected with a fuse or a circuit breaker with a rating of up to
20 A, and if nom. voltage at the system does not exceed 240 V~ (AC) or 50 V (DC).
In order to conform to the CAT requirements, an additional slow-blowing fuse link
(T16A/500V) has been fitted in series with the miniature circuit breaker which can
only be replaced by service personnel once it is tripped.
• Be prepared for the occurrence of unexpected voltages at devices under test
(e.g. defective devices). For ex., capacitors may be dangerously charged.
• Make certain that the measurement cables are in flawless condition, e.g. no
damage to insulation, no interruptions 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 permitted.
6 GOSSEN METRAWATT GMBH
• Be absolutely certain that the measuring ranges are not overloaded beyond
their allowable capacities. Limit values can be found in the “Measuring
Ranges” table in chapter 14, “Characteristic Values”.
Meaning of symbols on the instrument
Warning concerning a point of danger
(Attention: observe documentation!)
Earth
Continuous doubled or reinforced insulation
CAT II Measurement category I I device
Indicates CE conformity
DKD calibration certificate (red label):
Repairs, Parts Replacement and Balancing
When the instrument is opened, voltage conducting parts may be exposed. The
instrument must be disconnected from the measuring circuit before repair,
replacement of parts or balancing. If repair or balancing of a live, open instrument
is required, this may only be carried out by trained personnel who are familiar
with the dangers involved.
Defects 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 long periods of storage under unfavorable conditions, e.g. humidity,
dust, excessive temperature (see “Ambient Conditions” on page 25).
!
Consecutive number
Registration number
Date of calibration (year - month)
German calibration service – calibration laboratory
B0730
01-08
DKD-K19701
GOSSEN METRAWATT GMBH 7
2 Initial Start-Up
Installing Batteries
Attention!
!
Disconnect the instrument from the measuring circuit at all poles before
opening the battery compartment!
➭ Fold the instrument closed.
➭ Insert a coin or a similar object into the slot between the housing and the
battery compartment cover and press down until the battery compartment
cover snaps open.
➭ Fold the instrument open as far as it will go and remove the battery
compartment cover.
➭ Insert two 1.5 V mignon batteries per IEC R6 or IEC LR6 into the battery
compartment, making sure they are poled in accordance with the symbols.
➭ Replace the battery compartment cover and press into position until it
audibly snaps into place.
Switching the Instrument On
➭ Set the toggle switch to the “ON” position.
Activation of the instrument is acknowledged with an acoustic signal.
If the instrument has been shut down automatically, press either the FUNC, DATA or
MAN key to switch the multimeter back on, or set the toggle switch to the “OFF”
position and leave it there for at least 5 s before returning it to the “ON” position.
Note!
☞
Electrical discharges and high frequency interference may lead to erroneous display values, and may disable the measuring sequence. Reset
the instrument by switching it off and then, after 5 s, back on again.
Switching the Instrument Off Manually
➭ Set the toggle switch to the “OFF” position and fold the instrument closed. The
battery is automatically disconnected when the multimeter is folded closed.
Automatic Shutdown (standby)
The instrument switches itself off automatically if the measured value remains
constant for a long period of time (maximum measured value fluctuation approx.
0.8% of the measuring range per minute, or 1° Celsius or 1° Fahrenheit per
minute), and if no keys are activated for a period of approximately 10 minutes.
Shutdown is acknowledged by a brief acoustic signal. Exception: continuous
operation mode.
Note!
☞
Electrical power is supplied to the processor even after the instrument
has been switched off automatically. A closed-circuit current of about
300 µA remains. The instrument is only disconnected from the batteries
after it has been switched off manually with the toggle switch or with the
instrument folded.
8 GOSSEN METRAWATT GMBH
Disabling Automatic Shutdown
The instrument can be switched to “CONTINUOUS ON”.
➭ Press the FUNC key while switching the instrument on with the toggle switch
until an acoustic signal is generated. The “CONTINUOUS ON” function
is indicated at the display with the symbol.
3 Selecting Measuring Functions and Measuring Ranges
3.1 Automatic Measuring Range Selection
The multimeter is equipped with auto-ranging for all measuring ranges except for
temperature measurement, diode and continuity testing and the 15 A range.
Auto-ranging is always activated as soon as the instrument is switched on.
Depending upon the measured quantity, the device automatically selects the
measuring range which allows for best possible resolution.
The instrument automatically switches to the next highest or next lowest
measuring range for the following measured quantities:
1)
28 digits - 1 digit for switching from the 300 kHz to the 3 kHz range
3.2 Manual Measuring Range Selection – MAN/AUTO Key
Auto-ranging can be deactivated and ranges can be set manually in accordance
with the following table.
The manual mode is deactivated by pressing and holding the MAN/AUTO key for
about 1 s, by turning the rotary switch or by switching the instrument off and
back on again.
Measuring Ranges Resolution
Switching to the next
highest range occurs
at ±(... d + 1 d)
Switching to the next
lowest range occurs
1)
at ±(... d –1 d)
V~, V , mA , mA~, Ω,
Hz,30 nF … 3 mF,
3 ¾ 3 100 280
Key
MAN/AUTO
Function
Acknowledgement
Visual Acoustic
brief Manual mode active: utilized measuring range is fixed MAN 1 x
brief
Switching sequence for:
V: 300 mV → 3V→ 30 V → 300 V → 600 V → 300 mV → …
mA: 300 µA → 3mA→ 30 mA → 300 mA → 300 µA …
Ω:30MΩ→ 300 Ω→ 3kΩ→ 30 kΩ→ 300kΩ→ 3MΩ→
30 MΩ…
F: 30 nF → 300 nF → 3 µF → 30 µF → 300 µF →
3000 µF → 30 000 µF → 30 nF …
Hz: 300 Hz → 3kHz→ 300 kHz → 300 Hz …
: 3.000 → 30,00 → 300,0 → 3,000 …
MAN 1 x
long Return to automatic measuring range selection — 2 x
GOSSEN METRAWATT GMBH 9
3.3 Quick Measurements
If you wish to perform quicker measurements than those possible with the automatic measuring range selection function, make sure to establish the appropriate
measuring range:
•by manual measuring range selection, i. e. by selecting the measuring range
with the best resolution, see chapter 3.2.
or
•via DATA function, see chapter 5. After the first measurement, the proper
measuring range will be automatically determined so that measurements are
performed more rapidly from the second measured value onwards.
With both functions, the established measuring range is maintained for the subsequent series mode measurments.
4Display (LCD)
4.1 Digital Display
The measured value appears at the digital display with decimal point and sign (+
or -). The selected unit of measure and the type of current are displayed as well.
A minus sign is displayed to the left of the value for the measurement of zerofrequency quantities if the positive pole of the measured quantity is applied to the
⊥ jack.
If the measuring range upper limit is exceeded for the following measured
quantities, “OL” (overload) is displayed:
V (DC), I (DC), Ω, Hz, V~ (AC), I~ (AC), 30 nF
… 3 mF: 3099 digits
30 mF: 30999 digits
The digital display is refreshed at different rates for the individual measured
quantities (see “Display Refresh Rates” on page 24.
4.2 Analog Display
The analog display with simulated pointer and dynamic response equivalent to
that of a moving-coil mechanism, is refreshed 20 times per second. This display
is especially advantageous for the observation of measured value fluctuations,
and during balancing.
The analog display is equipped with a polarity indicator. The scale is extended 5
segments into the negative range for the measurement of zero-frequency
quantities, allowing for precise observation of measured value fluctuation around
the zero point. If the measured value exceeds the display range, a triangle is first
display at the left, and polarity at the display is reversed approximately 0.7
seconds later. If the measuring range is exceeded (> 3099 digits, in
the 30 mF range: > 30999) a triangle is displayed at the right.
Scaling at the analog display is automatic, which is quite helpful for manual
measuring range selection.
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