Gossen MetraWatt METRACLIP 87 User Manual
METRACLIP 87
CLAMP MULTIMETER
User’s manual
ENGLISH
Clamp Multi me ter METRACLIP 8 7 English
CONTENTS
1
PRESENTATION............................................................................................................ 8
1.1
THE SWITCH ........................................................................................................................................ 9
1.2
THE KEYS OF THE KEYPAD .......................................................................................................... 10
1.3
THE DISPLAY UNIT.......................................................................................................................... 11
1.3.1 The symbols of the display un it ....................................................................... 11
1.3.2 Measurement ca pacity exc e eded (O .L) .......................................................... 13
1.4
THE TERMINALS .............................................................................................................................. 13
2 THE KEYS ..................................................................................................................... 14
2.1
KEY ....................................................................................................................................................... 14
2.2
KEY (
SECOND F UNCT I ON
) ..................................................................................................................... 15
2.3
KEY ....................................................................................................................................................... 15
2.4
KEY ....................................................................................................................................................... 16
2.5
KEY ....................................................................................................................................................... 17
2.5.1 In the normal mode ......................................................................................... 17
2.5.2 Access to the True -INRUSH mode ( set to ) .................................... 18
2.5.3 The MAX/MIN/PEAK mode + activation of the HOLD mode....................... 18
2.6
KEY ....................................................................................................................................................... 19
2.6.1 The Hz function in the normal mode .............................................................. 19
2.6.2 In the display of orders o f harmonics mode or + ................. 20
2.6.3 In Hz mode + activ ation of the HOLD mode ................................................. 20
3 USE .................................................................................................................................. 21
3.1
COMMISSIONING ............................................................................................................................. 21
3.2
STARTING UP THE CLAMP MULTIMETER .............................................................................. 21
3.3
SWITCHING THE CLAMP MULTIMETER .................................................................................. 22
3.4
CONFIGURATION ............................................................................................................................ 22
3.4.1 De-activation of automatic switching off (Auto Power OFF) ....................... 22
3.4.2 Programming of the current threshold for the True INRUSH measurement 22
3.4.3 Program m ing the rat e of reco rd in g in memory ............................................. 23
3.4.4 Erasure of the rec ords in memory .................................................................. 23
3.4.5 Default config uration ...................................................................................... 23
3.5
VOLTAGE MEASUREMENT (V) ................................................................................................... 24
3.6
CONTINUITY TEST ................................................................................................................... 25
3.7
RESISTANCE MEASUREMENT
Ω
................................................................................................ 26
3.8
CURRENT MEASUREMENT (A) ................................................................................................... 26
3.8.1 AC measurement ............................................................................................. 26
3.8.2 DC or AC+DC me asurement.......................................................................... 27
3.9
STARTING CURRENT OR OVERCURRENT (TRUE INRUSH) MEASUREMENT ............. 29
3.10 POWER MEASUREMENTS W, VA,
VAR, PF
AND DPF.............................................................. 30
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English Clamp Multimeter METRA CLIP 87
3.10.1
Measurement of single-phase power .............................................................. 31
3.10.2 Balanced three-ph ase pow e r measu rem ent .................................................... 32
3.10.3 Four quadrant diagram .................................................................................. 33
3.11 ENERGY METERING MEASUREMENT...................................................................................... 33
3.12 FREQUENCY MEASUREMENT (HZ)............................................................................................ 37
3.12.1 Frequency measure ment in voltage ................................................................ 37
3.12.2 Frequency measure ment in current ................................................................ 38
3.13 MEASUREMENT OF THE TOTAL HARMONIC DISTORTION (THD) AND DISPLAY OF
THE ORDERS OF HARMONICS .................................................................................................................... 38
3.13.1 Measurement of the THD in v oltage .............................................................. 38
3.13.2 Measurement of the THD in c urrent .............................................................. 39
3.13.3 Display o f the 25 or ders of ha rmonics a nd of the f requenc y of the
fundamental ..................................................................................................................... 40
3.14 RECORDING OF MEASUREMENT DATA/CAMPAIGNS ....................................................... 41
3.15 PROCESSING OF THE DATA ON A PC WITH THE PAT SOFTWARE .................................. 41
4 CHARACTERISTICS .......................FEHLER! TEXTMARKE NICHT DEFINIERT.
4.1
REFERENCE CONDITIONS ............................................................................................................ 55
4.2
CHARACTERISTICS UNDER THE REFERENCE CONDITIONS ........................................... 55
4.2.1 DC voltage meas urement ................................................................................ 56
4.2.2 AC voltage meas urement ................................................................................ 56
4.2.3 AC+DC voltage m easurement ........................................................................ 57
4.2.4 DC current meas urement ................................................................................ 57
4.2.5 AC current meas urement ................................................................................ 58
4.2.6 AC+DC intensity measurement ...................................................................... 58
4.2.7 True-Inrush mea surement ............................................................................... 59
4.2.8 Calculation of the crest factor ( CF) ............................................................... 59
4.2.9 Calculation of the RIP PLE in D C .................................................................. 60
4.2.10 Continuity meas ure ment ................................................................................. 60
4.2.11 Resista nce measu rement ................................................................................. 60
4.2.12 Active D C power m easuremen ts ..................................................................... 61
4.2.13 Active A C power m easuremen ts ..................................................................... 61
4.2.14 Active A C+DC power measurem ents ............................................................. 62
4.2.15 Measurement of apparent A C power .............................................................. 63
4.2.16 Measurement of apparent A C+DC power ..................................................... 63
4.2.17 Measurement of reactive AC power ............................................................... 64
4.2.18 Measurement of reactive AC+DC power ....................................................... 65
4.2.19 Calculation of the power factor (PF) ............................................................. 65
4.2.20 Calculation of the displac e ment power factor (DPF).................................... 66
4.2.21 Frequency measure ments ................................................................................ 66
4.2.22 Characte ristic s in THDr ................................................................................. 67
4.2.23 Characte ristic s in THDf .................................................................................. 67
4.2.24 Harmonic measurement character istics ......................................................... 67
4.3
ENVIRONMENTAL CONDITIONS ............................................................................................... 68
4.4
CHARACTERISTICS OF CONSTRUCTION ................................................................................ 68
4.5
POWER SUPPLY ................................................................................................................................ 69
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Clamp Multi me ter METRACLIP 8 7 English
4.6
COMPLIANCE WITH INTERNATIONAL STANDARDS ......................................................... 69
4.7
VARIATIONS IN THE DOMAIN OF USE ..................................................................................... 69
5 MAINTENANCE .......................................................................................................... 71
5.1
CLEANING .......................................................................................................................................... 71
5.2
REPLACEMENT OF THE BATTERIES ......................................................................................... 71
5.3
METROLOGICAL CHECK .............................................................................................................. 71
5.4
REPAIR ................................................................................................................................................. 71
6 WARRANTY ................................................................................................................. 72
7 DELIVERY CONDITION ........................................................................................... 72
8 ADDRESSES .................................................................................................................. 73
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English Clamp Multimeter METRA CLIP 87
You have just acquired an METRACLIP 8 7 clamp multimeter and we thank you.
For best results from your device :
• read this user manual attentively,
• observe t h e prec autions for its use.
Meanings of the symbols used on the device
Danger. The operat or agrees t o refer to this dat a sheet whene ver this danger
symbol is encountered.
Application or withdrawal authorized on uninsulated or bare conductors at
dangerous voltage s.
1.5 V battery.
The CE marking indicates compliance with European directives.
Double insulation or reinforced insulation.
Selective sorting of wastes for the recycling of electrical and electronic
equipment within the European Union.
In conformity with directive DEEE 2002/96/EC: this equipment must not be
treated as household waste.
AC – Alternating current.
AC and DC – Alternating and direct current.
Earth.
Risk of electric shock.
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Clamp Multi me ter METRACLIP 8 7 English
PRECAUTIONS FOR USE
This device complies with safety standards IEC-61010-1 and 61010-2-032 for
voltages of 1000V in category IV at an altit ude OF les s t han 2000m , indoors, with a
degree of pollution not exceeding 2.
These safety instruct ions are intended to ensure the safety of persons and proper
operation of the device. If the tester is used other than as specified in this data
sheet, the protection provided by the device may be impaired.
The operator and/or the responsible authority must carefully read and clearly
understand the various precautions to be taken in use.
If you use this instrument other than as specified, the protection it provides
may be compromised, thereby endangering you.
Do not use the instrument in an explosive atmosphere or in the presenc e of
flammable gases or fumes.
Do not use the instrument on networks of which the voltage or category
exceeds those mentioned.
Do not exceed the rat ed m axim um v olt ages and current s between terminals or
with respect to earth.
Do not use the instrument if it appears to be damaged, incomplete, or not
properly closed.
Before each use, check the condition of the insulation on the leads, hous ing,
and accessories. Any element of which the insulation is deteriorated (even
partially) must be set aside for repair or scrapped.
Use leads and accessories rated for voltages and cat egories at least equal to
those of the instrument. If not, an accessory of a lower category lowers the
category of the combined Clamp + accessory to that of the accessory.
Observe the environmental conditions of use.
Do not modify the instrument and do not replace components with
"equivalents". Repairs and adjustments must be done by approved qualified
personnel.
Replace the batt eries as soon as the
symbol appears on th e display unit.
Disconnect all cords before opening the battery compartment cover.
Use personal protective equipment when conditions require.
Keep your hands away from the unused terminals of the instrument.
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English Clamp Multimeter METRA CLIP 87
When handling the test probes, crocodile clips, and clamp ammeters, keep
your fingers behind the physical guard.
As a safety measure, and to avoid repeated overloads on the inputs of the
device, we recommend performing configuration operations only when the
device is disconnected from all dangerous voltages.
MEASUREMENT CA TEGORI ES
Definitions of the m e a surem e nt c a t e gories :
CAT II: Circuit s dir ectly connected to the low-voltage installation.
Example: power supply to household electrical appliances and portable tools.
CAT III: Pow er s upply circuit s in the installation of the building.
Example: distribution panel, circuit-breakers, fixed industrial machines or devices.
CAT I V: Circuit s supplying the low-voltage installation of the building.
Example: power lines, meters, and protection devices.
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Clamp Multi me ter METRACLIP 8 7 English
1
3
4
5
6
2
7
1 PRESENTATION
The METRACLIP 87 is a professional electrical measuring instrument that
combines the following functions:
Current measurement;
Measurement of inrush current / overcurrent (True-Inrush);
Voltage measurement;
Frequency measurement;
Measurement of harmonic distortion, total (THD) and order by order;
Continuity test with buzzer;
Resistance measurement;
Power (W, VA, var and PF) and Energy measurements;
Measurement of the Crest Factor (CF), the Displacement Power Factor
(DPF), and RIPPLE;
Recording of data in memory, Wireless data transfer to a PC (by Bluetooth);
Item
Designation See §
1
Jaws with centring marks
(see connection principles)
3.5 to
3.13
2 Physical guard 3 Switch 1.1
4 Function keys 2
5 Display unit 1.3
6 Terminals 1.4
7 Trigger -
Figure 1 : the ME TRACLIP 8 7 clamp multimeter
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English Clamp Multimeter METRA CLIP 87
1.1 THE SWITCH
The switch has five positions. To access the , , , , functions, set the
switch to the desired function. Each sett ing is confirmed by an audible signal. The
functions are described in the table below.
Figure 2 : the switch
Item Function See §
1 OFF mode – Switches the clamp multimeter off 3.3
2 AC, DC, AC+DC voltage measurement (V) 3.5
3 Continuity test
Resistance measurement Ω
3.6
3.7
4 AC, DC, AC+DC current measurement (A) 3.8
5 Power measurements (W, var, VA) AC, DC, AC+ DC
Calculation of the power factor (PF), of the displacement
power factor (DPF), of the Energy
3.10
1 2 3
4
5
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Clamp Multi me ter METRACLIP 8 7 English
1.2 THE KEYS OF THE KEYPAD
Here are the six keys of the keypad :
1 2 3
4 5 6
Figure 3 : the keys of the keypad
Item Function See §
1 Storage of values, disabling of display
Zero correction ADC/A
AC+DC/WDC/WAC+DC
2.1
3.8.2
2 Selection of the type of measurement (AC, DC)
Selection of single-phase or three-phase measurement
2.2
3 Activation or de-activation of the backlighting
of the display unit
Scrolling up of orders of harmonics or of pages of results in W,
MAX/MIN/PEAK
Activation or de-activation of BT wireless transfer (in combination with 6)
2.3
4 Activation or de-activation of the MAX/MIN mode
Activation or de-activation of the INRUSH mode in A
2.5
5 Measurements of frequency (Hz), of total harmonic distortio n (THD),
and of orders of harmonics
Activation or de-activation of the energy metering mode
2.6
6 Scrolling down of orders of harmonics or of pages of results in W,
MAX/MIN/PEAK
Activation or de-activation of recording of current data in memory
Activation or de-activation of BT wireles s transfer (in combination with 3)
2.4
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English Clamp Multimeter METRA CLIP 87
1.3 THE DISPL AY UNIT
Here is the display unit of the clamp multimeter:
Figure 4 : the display unit
Item Function See §
1 Display of the m odes selected (keys) 2
2 Display of the measurement value and unit 3.5 to 3.13
3 Display of the MAX/MIN modes 3.10
4 Type of measurement (AC or DC) 2.2
6 Spent battery indication 5.2
1.3.1 The symbols of the display unit
Symbol Designation
AC Alternating current or voltage
DC Direct voltage
AC+DC Alternating and direct current
Storage of the values and hold of the display
RMS RMS value
Max
Maximum RMS value
1
3
5 2 4
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Clamp Multi me ter METRACLIP 8 7 English
Min Minimum RMS value
AVG Mean RMS value
PEAK+ Maximum peak value
PEAK- Minimum peak value
Balanced total three-phase power measurement
V Volt
Hz Hertz
W Active power
A Ampere
% Percentage
Ω Ohm
m Milli- prefix
k Kilo- prefix
var Reactive power
VA Appare nt power
PF Power factor
DPF Displacelent power factor (cos φ)
CF Crest factor
RIPPLE Ripple (in DC)
THDf Total harmonic distorsion with respect to the fundamental
THDr
Total harmonic distorsion with respect to the true RMS
value of the signal
REC Recording in memory
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English Clamp Multimeter METRA CLIP 87
BlueTooth wireless communication
Continuity test
Permanent display (automatic switching off de-activated)
Spent battery indicator
1.3.2 Measurement capacity exceeded (O.L)
The O.L (Over Load) symbol is displayed when the display capacity is exceeded.
1.4 THE TERMINALS
The terminals are used as follows:
1 2
Figure 5 : the te rminals
Item Function
1 Cold terminal (COM)
2 Hot terminal (+)
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Clamp Multi me ter METRACLIP 8 7 English
2 THE KEYS
The keys of the keypad respond diff erently to short, long, and sustained presses.
In this section, the
icon represents the possible positions of the switch for which
the key concerned has some action.
2.1
KEY
This key is used to:
store and look up the last values acquired specific to each function (V, A, Ω,
W) according to the specific modes previously activated
(MAX/MIN/PEAK,Hz,THD); the present display is then maintained while the
detection and acquisition of new values continues;
perform an automatic zero correction in A
DC/AC+DC
et WDC/
AC+DC
(see also §
3.9.2
)
Successive
presses on
… serve
short
1. to store the results of the present
measurements
2. to hold the display of the last value displayed
3. to return to normal display mode (the value of
each new measurement is displayed)
Long (> 2 sec) ADC
A AC+DC
WDC
W AC+DC
To perform automatic compensation of the zero
Remark : this mode operates if the
MAX/MIN/PEAK or HOLD modes (short press)
are first desactivated.
See also § 2.5.3 and § 2.6.3 for the action
key with the action of the key
and with the action of the key.
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English Clamp Multimeter METRA CLIP 87
2.2 KEY (SECOND FUNCTION)
This key is used to select the type of measurement (AC, DC, AC+DC) and the
second functions marked in yellow next to the relevant positions of the switch.
It can also be used in the configuration mode, to modify the default values (see
§3.4
)
Remark: the key is invalid in the MAX/MIN/PEAK and HOLD modes.
Successive
presses on
… serve
short
-to select AC, DC or AC+DC. Depending on
your choice, the screen displays AC, DC or
AC+DC
-to cycle through the Ω mode or the continuity
test
Long (> 2 sec)
- to display the total three-phase power of a
balanced system (
is displayed).
- by pressing again, to return to display of the
single-phase power (
is off)
2.3 KEY
This key is used to :
Sc roll orders of harmonics or successive pages up;
Activate the back-lighting;
Activate the Bluetooth function.
Successive
presses on
… serve
short
to scroll through the various pages of
measurement results, depending on the
function and possibly the active mode
(MAX/MIN/PEAK or THD /Harmonics)
long (> 2 sec)
to activate/de-activate the back-lighting of the
display unit.
Remark: the back -lighting is switched off
automat ically at the end of 2 m inutes .
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Clamp Multi me ter METRACLIP 8 7 English
Combined with
the
key
To activate Bluetooth wireless communication.
The
symbol is the displayed.
Remark: activation of the Blueto oth mode
automat ically stops t he recordi ng of the dat a.
2.4 KEY
This key is used to :
Sc roll dow n through the orders of harmonics or successive pages;
Activate the recording of the data;
Activate the Bluetooth function.
Successive
presses on
… serve
short
to scroll through the various pages of
measurement results, depending on the
function and possibly the active mode
(MAX/MIN/PEAK or THD /Harmonics)
long (> 2 sec)
activate/de-activate the recording of the data.
The REC symbol i s then displayed.
Remark: when the r ecording memory is full, the REC
symbol flashes
combiné avec la
touche
To activate Bluetooth wireless communication.
The symbol is then displayed.
Remark: activation of the Blueto oth mode
automatically stops the recording of the data.
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English Clamp Multimeter METRA CLIP 87
2.5 KEY
2.5.1 In the normal mo de
This ke y activat es detect ion of the MAX, MIN, PEAK+, PEAK- or AVG values of the
measurements made.
Max and Min are the extreme mean values in DC and the extre me RM S values in AC .
Peak+ is the maximum instantaneous peak and Peak- is the minimum i nstantaneous
peak.
AVG is the moving average of 4 mea surements.
Remark : in this mode, the "automatic switching off" function of the device is
automatically de-activated. The
symbol is displayed on the screen.
Successive presses on
… serve
short
-to activate detection of the MAX/MIN/PEAK values
-
to display the MAX, AVG, MIN and PEAK+, AVG,
PEAK- values (on a second screen)
-to return to display of the present measurement
without exiting from the
mode (the values already
detected are not erased)
Remark: dep en d in g on th e m o d e, A C or DC , t h e c r es t f ac t or
(CF), harmonics, frequency, and RIPPLE are also available.
- to activate detection of the MAX/MIN/AVG values.
- to display th e MAX, MIN, and AVG simultaneousl y.
- to return to display of the present measurement
without exiting from the mode (the values already
detected are not erased)
long (> 2 sec)
to exit from the MAX/MIN/PEAK mode. The values
previously recorded are then erased.
Remark: if th e HOLD f unction is acti vated, it is not poss ible
to exit from the MAX/MIN/PEAK mod e. The HOLD f unction
must first be d e-activated.
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Clamp Multi me ter METRACLIP 8 7 English
2.5.2 Access to the True-INRUSH mode ( set to )
This key allows measurement of the True-Inrush current (starting current, or
overcurrent in steady-state operation) for AC or DC current only (not operational in
AC+DC).
Successive
presses on
…serves
long (>2 sec)
to enter the True-INRUSH mode
-"Inrh" is displayed for 3s (the backlighting blinks)
-the triggering threshold is displayed for 5s (the
backlighti ng is steady);
-"------" is displayed and the "A" symbol flashes
-after detection and acquisition, the inrush
current measurement is displayed, after the
calculations stage "------" (backlighting off)
Remark: the A symb ol f lashes to indicate "surv eill ance"
of the signal.
to exit from the True-INRUSH mode (return to
simple current measurement).
short (<2 sec)
Note:
a short press is
functi on al only if an
True-Inrush value has
been det ected.
-to display the PEAK+ value of the current
-to display the PEAK- value of the current
-to display the RMS True-Inrush current
Remark: the A sym bol is displayed steadily during this
sequence.
2.5.3 The MAX/MIN/PEAK mode + activation of the HOLD mode
Successive presses
on
… serve
short
to display successively the MAX, AVG, MIN and
PEAK+, AVG, PEAKThe values displayed are the same b
efore the
key was pressed.
Note: the HOLD function does not interrupt the acquisition of new MAX, MIN, PEAK
values
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English Clamp Multimeter METRA CLIP 87
2.6
KEY
This key is used to display measurements of the frequency of a signal, of power, of
the levels and orders of harmonics.
Remark : this key is not working in DC mode.
2.6.1 The Hz function in the normal m ode
Successive
presses on
…serves
short
to di splay:
1. the frequency of the signal, the RMS
measurement, and the DC component
2. the crest factor CF, the RMS measurement,
and the DC component
Long (> 2 sec)
1. to enter or exit from the THD calculation and
display mode
2. to display the THDf, the THDr, and the RMS
value.
3. The and keys are used to display
each order of harmonic (25 orders, from h01 to
h25), with the associated harmonic distortion
(with respect to the fundamental) and the RMS
value of order hxx.
Note: orde r hdC (disp layed i n the DC and
AC+DC modes) is the DC component; order h01
is the fundamental.
1. to activate or stop the energy metering mode
2. to display the various energy parameters
3. The and keys are used to display the
status and energy metering measurement results
pages.
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Clamp Multi me ter METRACLIP 8 7 English
2.6.2 In the display of orders of harmonics mode or +
Successive
presses on
…serve
short
to display the frequency of the order of harmonic
previously selected us ing the or keys,
instead of order hxx.
A 2nd short press restores display of order (hxx)
or hdC
2.6.3 In Hz mode + activation of the HOLD mode
Successive
presses on
…serve
short
To store and display the frequency with the RMS
value and the DC component, then, on a 2nd
consecutive page, the crest factor CF.
Note: the values displayed are those measured
before the HOLD key is pressed
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English Clamp Multimeter METRA CLIP 87
3 USE
3.1 COMMISSIONING
Insert the batteries supplied with the device as follows:
1. Using a screwdriver, unscrew the screw of the battery compartment cover
(item 1) on the back of the housing and open it.
2. Plac e the 4 batteries in the compartment (item 2), taking care to get the
polarities right.
3. Close t he batt ery compartment cover and screw it to the housing.
Figure 6 : the battery compartment cover
3.2 STARTING UP THE CLAMP MUL TIMETER
The switch is s et to OFF. Turn th e switch t o the funct ion of your choice. T he whole
display lights (all symbols) for a few seconds (see §1.3
), then the screen of the
function chosen is displayed. The clamp multimeter is then ready to make
measurements.
1
2
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Clamp Multi me ter METRACLIP 8 7 English
3.3 SWITCHING THE CLAMP MULTIMETER
The clamp multim eter can be switched off either manually, by setting the s witch to
OFF, or automatically, after ten minutes with no action on the switch and/or the
keys. Thirty (30) seconds before the device is switched off, an audible signal
sounds intermittently. To re-activate the device, press any key or turn the switch.
3.4 CONFIGURATION
As a safety measure, and to av oid repeated overloads on the inputs of the device,
we recommend performing configuration operations only when the device is
disconnected from all dangerous voltages.
3.4.1 De-activation of automatic switching off (Auto Power OFF)
To de-activate automatic switching off:
In the OFF position, hold the
key down while turning the switch to
, until the "full screen" display ends and a beep is emitted, to enter the
configuration mode. The
symbol is displayed.
When the ke y is released, the device is in the voltmeter function in
the normal mode.
The return to Auto Power OFF takes place when the clamp is switched
back on.
3.4.2 Programming of the current threshold for the True INRUSH
measurement
To program the triggering current threshold of the True INRUSH measurement:
1. in the OFF position, hold the
ke y down while turning the switch to
, until the "full screen" display ends and a beep is emitted, to enter the
configuration mode. The display unit indicates the percentage overshoot to
apply to the measured current to determine the measurement triggering
threshold.
Remark : The value stored by default is 10%, representing 110% of the established
current measured. The possible values are 5%, 10%, 20%, 50%, 70%, 100%,
150%, and 200%.
2. To change the threshold, press the
key. The value flashes: each
press on the
key displays the next value. To record the chosen
threshold, apply a long press (>2s) on t he
key. A confirmati on beep is
emitted.
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English Clamp Multimeter METRA CLIP 87
To exit from the programming mode, turn the switch to another setting. The chosen
threshold is stored (emission of a double beep).
Note: The s tarting current measurement triggering threshold is fixed at 1% of the
least sensitive range. This threshold is not adjustable
3.4.3 Programming t he rate of recording in memory
1. In the OFF position, hold the
ke y down while turning the sw itch to
, until t he end of the "f ull sc reen" display and the em ission of a beep,
to enter the configuration mode. The display unit then indicates the
interval of recording of the data in memory.
Remark: the default value is 60 seconds. Possible values range from 1 second to
600 seconds (10 minutes).
2. T o change the re cording interv al, press the
key. The right-hand digit
blinks: each press on the
key increments its value. To go to the next
digit, apply a long press (>2s) to the
key.
When the desired unit is displayed, turn the switch to another setting. The unit
chosen is stored (emission of a double beep).
3.4.4 Erasure of the records in memory
In the OFF position, hold the
key down while turning the switch to
.
The device emits a beep after erasing the records in memory. The "rSt"
and "rEC" symbols are displayed. The device then switches to normal
continuity measurement.
We recommend not having any voltage on the input terminals while doing this.
3.4.5 Default configuration
To reset the clamp to its default parameters (factory configuration):
In the OFF position, hold the
key down while turning the switch to
,
until the "full screen" display ends and a beep is emitted, to enter the
configuration mode. The "rSt" symbol is displayed.
After 2 s, the clamp emits a double beep, then all of the symbols of the
screen are displayed until the
key is released. The default parameters
are then restored:
Recording interval =60 seconds
True Inrush triggering threshold =10%
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