Auto AutoSense
ZeroLoZi
� HOLD
AUTOTEST
AUTO BACKLIT
600A
600V
CAT.IV
DCA ZERO
PRESS 1 SEC
POWER OFF
PRESS 3 SEC
TRUE RMS
CAT.IV
600V
CAT.III
1000V
D
Bedienungsanleitung
Operating manual
F
Notice d‘emploi
E
Instrucciones de servicio
Návod k obsluze
Οδηγίες χρήσεως
H
Kezelési utasítás
I
Istruzioni d’uso
Gebruiksaanwijzing
Instrukcja obsługi
Instructiuni de folosire
Инструкция по эксплуатации
индикатора напряжения
S
Bruksanvisning
Kullanma Talimati
BENNING CM 5–1
Auto AutoSense
ZeroLoZi
· HOLD
AUTOTEST
AUTO BACKLIT
600A
600V
CAT.IV
DCA ZERO
PRESS 1 SEC
POWER OFF
PRESS 3 SEC
TRUE RMS
CAT.IV
600V
CAT.III
1000V
D F E H I S
Bild 1: Gerätefrontseite
Fig. 1: Front tester panel
Fig. 1: Panneau avant de l‘appareil
Fig. 1: Parte frontal del equipo
Obr. 1: Přední strana přístroje
Σικόνα 1: Μπροστινή όψη
1. ábra: A mérõkészülék elölnézete
09/ 2009
BENNING CM 5-1
Ill. 1: Lato anteriore apparecchio
Fig. 1: Voorzijde van het apparaat
Rys. 1: Panel przedni przyrządu
Imaginea 1: Partea frontală a aparatului
Рис. 1: Вид спереди
Fig. 1: Framsida
Resim 1: Cihaz önyüzü
D F E H I S
Auto AutoSense
ZeroLoZi
· HOL D
AUTOTEST
AUTO BACKLIT
600A
600V
CAT.IV
DCA ZERO
PRESS 1 SEC
POWER OFF
PRESS 3 SEC
TRUE RMS
CAT.IV
600V
CAT.III
1000V
Auto AutoSense
ZeroLoZi
· HOL D
AUTOTEST
AUTO BACKLIT
600A
600V
CAT.IV
DCA ZERO
PRESS 1 SEC
POWER OFF
PRESS 3 SEC
TRUE RMS
CAT.IV
600V
CAT.III
1000V
Bild 2: Gleich-/ Wechselspannungsmessung mit
AUTOTEST-Funktion
Fig. 2: Direct/ alternating voltage measurement with
AUTOTEST function
Fig. 2: Mesure de tension continue/ alternative avec
fonction AUTOTEST
Fig. 2: Medición de tensión contínua/ alterna con
función AUTOTEST
Obr. 2: Měření stejnosměrného/ střídavého napětí s
funkcí AUTOTEST
Σικόνα 2: Μέτρηση συνεχούς/ εναλλασσόμενης τάσης
και λειτουργία AUTOTEST
2. ábra: Egyen- es váltakozó feszültség mérés
AUTOTEST művelettel
Ill. 2: Misura tensione continua/ alternata con
funzione AUTOTEST
Fig. 2: Meten van gelijkspanning/ wisselspanning met
AUTOTEST-functie
Rys.2: Pomiar napięcia stałego/ przemiennego z
funkcją AUTOTEST
Imaginea 2: Măsurarea tensiunii continue/ alternative cu
funcţia AUTOTEST
Рис. 2: Измерение напряжения постоянного/
переменного тока при помощи функции
AUTOTEST
Fig. 2: Likspänningsmätning/ växelspänningsmätning
med AUTOTEST-funktion
Resim 2: AUTOTEST işleviyle doğru/ alternatif gerilim
ölçümü
Bild 3: Gleich-/ Wechselstrommessung mit
AUTOTEST-Funktion
Fig. 3: Direct/ alternating current measurement with
AUTOTEST function
Fig. 3: Mesure de courant continue/ alternative avec
fonction AUTOTEST
Fig. 3: Medición de corriente contínua/ alterna con
función AUTOTEST
Obr. 3: Měření stejnosměrného/ střídavého proudu s
funkcí AUTOTEST
Σικόνα 3: Μέτρηση συνεχούς/ εναλλασσόμενης έντασης
ρεύματος και λειτουργία AUTOTEST
3. ábra: Egyen- es váltakozó áram mérés AUTOTEST
művelettel
Ill. 3: Misura corrente continua/ alternata con
funzione AUTOTEST
Fig. 3: Meten van gelijkstroom/ wisselstroom met
AUTOTEST-functie
Rys.3: Pomiar prądu stałego/ przemiennego z funkcją
AUTOTEST
Imaginea 3: Măsurarea curentului continuu/ alternativ cu
funcţia AUTOTEST
Рис. 3: Измерение величины постоянного/
переменного тока при помощи функции
AUTOTEST
Fig. 3: Likströmsmätning/ växelströmsmätning med
AUTOTEST-funktion
Resim 3: AUTOTEST işleviyle doğru/ alternatif akım
ölçümü
09/ 2009
BENNING CM 5-1
D F E H I S
Auto AutoSense
ZeroLoZi
· HOL D
AUTOTEST
AUTO BACKLIT
600A
600V
CAT.IV
DCA ZERO
PRESS 1 SEC
POWER OFF
PRESS 3 SEC
TRUE RMS
CAT.IV
600V
CAT.III
1000V
Auto AutoSense
ZeroLoZi
· HOL D
AUTOTEST
AUTO BACKLIT
600A
600V
CAT.IV
DCA ZERO
PRESS 1 SEC
POWER OFF
PRESS 3 SEC
TRUE RMS
CAT.IV
600V
CAT.III
1000V
Bild 4: Widerstandsmessung
Fig. 4: Resistance measurement
Fig. 4: Mesure de la résistance
Fig. 4: Medición de resistencia
Obr. 4: Měření odporu
Σχήμα 4: Μέτρηση αντίστασης
4. ábra: Ellenállásmérés
Ill. 4: Misura di resistenza
Fig. 4: Weerstandsmeting
Rys.4: Pomiar rezystancji
Imaginea 4: Măsurarea rezistenţei
Рис. 4: Измерение сопротивления
Fig. 4: Resistansmätning
Resim 4: Direnç ölçümü
09/ 2009
Bild 5: Durchgangsprüfung mit Summer
Fig. 5: Continuity testing with buzzer
Fig. 5: Contrôle de continuité avec ronfleur
Fig. 5: Control de continuidad con vibrador
Obr. 5: Akustická zkoušku obvodu
Σχήμα 5: Έλεγχος συνέχειας με ηχητικό σήμα
5. ábra: Folytonosság vizsgálat zümmögővel
Ill. 5: Prova di continuità con cicalino
Fig. 5: Doorgangscontrole met akoestisch signaal
Rys. 5: Sprawdzenie ciągłości obwodu
Imaginea 5: Testarea continuităţii cu buzzer
Рис. 5: Проверка целостности цепи
Fig. 5: Genomgångstest med summer
Resim 5: Sesli uyarıcı ile süreklilik ölçümü
BENNING CM 5-1
D F E H I S
Auto AutoSense
ZeroLoZi
· HOL D
AUTOTEST
AUTO BACKLIT
600A
600V
CAT.IV
DCA ZERO
PRESS 1 SEC
POWER OFF
PRESS 3 SEC
TRUE RMS
CAT.IV
600V
CAT.III
1000V
Bild 6: Diodenprüfung
Fig. 6: Diode testing
Fig. 6: Contrôle de diodes
Fig. 6: Prueba de diodos
Obr. 6: Test diod
Σχήμα 6: Έλεγχος διόδου
6: ábra: Dióda vizsgálat
Ill. 6: Prova dei diodi
Fig. 6: Diodencontrole
Rys.6: Sprawdzenie diody
Imaginea 6: Testarea diodelor
Рис. 6: Проверка диодов
Fig. 6: Diodtest
Resim 6: Diyot kontrolü
09/ 2009
Bild 7: Batteriewechsel
Fig. 7: Battery replacement
Fig. 7: Remplacement de la pile
Fig. 7: Cambio de pila
Obr. 7: Výměna baterií
Σχήμα 7: Αντικατάσταση μπαταριών
7. ábra: Telepcsere
Ill. 7: Sostituzione batterie
Fig. 7: Vervanging van de batterij
Rys.7: Wymiana baterii
Imaginea 7: Schimbarea bateriei
Рис. 7: Замена батареи
Fig. 7: Batteribyte
Resim 7: Batarya değişimi
BENNING CM 5-1
Operating instructions
BENNING CM 5-1
Digital current clamp multimeter with AUTOTEST function for
- Direct voltage measurements
- Alternating voltage measurements
- Direct current measurements
- Alternating current measurements
- Resistance measurements
- Continuity testing
- Diode testing
Table of contents
1. User notes
2. Safety note
3. Scope of delivery
4. Unit description
5. General information
6. Ambient conditions
7. Electrical specifications
8. Measuring with the BENNING CM 5-1
9. Maintenance
10. Technical data of the measuring accessories
11. Environmental note
1. User notes
These operating instructions are intended for
- qualified electricians and
- electrotechnically trained persons.
The BENNING CM 5-1 is intended for making measurements in dry environment.
It must not be used in power circuits with a nominal voltage higher than 1000 V
DC and 750 V AC (More details in Section 6. “Ambient conditions”).
The following symbols are used in these operating instructions and on the
BENNING CM 5-1:
Application around and removal from HAZARDOUS LIVE
conductors is permitted.
Warning of electrical danger!
Indicates instructions which must be followed to avoid danger to
persons.
Important, comply with the documentation!
The symbol indicates that the information provided in the operating
instructions must be followed with in order to avoid risks.
This symbol on the BENNING CM 5-1 means that the
BENNING CM 5-1 is totally insulated (protection class II).
This symbol on the BENNING CM 5-1 means that the
BENNING CM 5-1 complies with the EU directives.
This symbol appears on the display to indicate a discharged
battery.
This symbol designates the „continuity test“ range.
The buzzer is used for the acoustic result output.
(DC) Direct voltage or current.
(AC) Alternating voltage or current.
Ground (Voltage against ground).
Note
After unmark the adhesive label „Warnung...“ (on battery compartment lid) the
English text appears.
09/ 2009
BENNING CM 5-1
10
2. Safety note
The instrument is built and tested in accordance with
DIN VDE 0411 part 1/ EN 61010-1
and has left the factory in perfectly safe technical condition.
To maintain this condition and to ensure safe operation of the multimeter, the
user must observe the notes and warnings given in these instructions at all
times. Improper handling and non-observance of the warnings might involve
severe injuries or danger to life.
WARNING! Be extremely careful when working with bare
conductors or main line carrier! Contact with live conductors
will cause an electric shock!
The BENNING CM 5-1 may be used only in electrical circuits of
over voltage category III with a maximum voltage of 1000 V or
of over voltage category IV with a maximum voltage of 600 V
between the conductor and ground.
Remember that work on electrical components of all kinds is
dangerous. Even low-voltages of 30 V AC and 60 V DC may be
dangerous to human life.
Before starting the multimeter, always check it as well as all
measuring leads and wires for signs of damage.
Should it appear that safe operation of the multimeter is no longer possible, it
should be shut down immediately and secured to prevent that it is switched on
accidentally.
It may be assumed that safe operation is no longer possible:
- if the instrument or the measuring leads show visible signs of damage, or
- if the multimeter no longer works, or
- after long periods of storage under unfavourable conditions, or
- after being subject to rough transportation, or
- if the device or the measuring leads are exposed to moisture, or
- if the self-test fails and „FAIL“ is shown on the display.
In order to avoid danger,
- do not touch the bare probe tips of the measuring leads
measuring leads,
- insert the measurement leads in the appropriately
designated measuring sockets on the multimeter
Maintenance:
Do not open the multimeter, because it contains no components
which can be repaired by the user. Repair and service must be
carried out by qualified personnel only!
Cleaning:
Regularly wipe the housing by means of a dry cloth and
cleaning agent. Do not use any polishing agents or solvents!
3. Scope of delivery
The scope of delivery for the BENNING CM 5-1 comprises:
3.1 one BENNING CM 5-1,
3.2 one safety measuring leads, red (L = 1.4 m; probe tip diameter =
4 mm)
3.3 one safety measuring leads, black (L = 1.4 m; probe tip diameter =
4 mm)
3.4 one compact protective pouch,
3.5 a 9 V block battery
3.6 one operating manual
Parts subject to wear:
- The BENNING CM 5-1 is fed by a 9 V block battery (IEC 6 LR 61)
- The above-mentioned safety measuring leads ATL-2 (tested accessories)
correspond to CAT III 1000 V/ CAT IV 600 V and are approved for a current
of 10 A (part no. 044118).
09/ 2009
BENNING CM 5-1
11
4. Description of current clamp multimeter
See figure 1: Appliance front face
The display and operator control elements specified in Fig. 1 are designated
as follows:
1 Polarity marking, for assigning the DC current direction by means of the
polarity indication,
2 Bulge of current clamp, protects against contact with conductor,
3 Opening lever, for opening and closing the current clamp,
4 AutoSense, symbolizes the AUTOTEST function,
5 Zero, null-balance indication for direct current (DC) measurements,
6 APO, Auto Power Off is activated (device will switch off after 20 minutes),
7 , is indicated if a dangerous voltage is applied > 30 V,
8 Polarity indication, any polarity opposed to the polarity markings shall be
designated with „-“,
9 Battery status indication, appears when the battery is discharged,
J key (grey), with the following functions:
- POWER, for switching the BENNING CM 5-1 on/ off
- (AUTO) POWER OFF, for activating/ deactivating the automatic switchoff,
- ZERO balance, null balance for direct current (DC) measurements,
- (AUTO) HOLD, automatic storage of the measured value,
- HOLD, storage of the measured value,
K COM jack, common socket for voltage, resistance measurement and
continuity testing,
L Jack (positive1), for V, Ω and ,
M Range indication,
N LoZi, symbolizes a low input resistance for voltage measurements (4 kΩ ...
375 kΩ),
O Auto, HOLD and AutoHOLD, is displayed if the corresponding storage of
measured values is activated,
Digital display, for displaying the measured value and range exceedance,
AUTO BACKLIT, sensor of the automatic background lighting,
Measuring pliers, for clamping on the single wire current-carrying
conductor,
1) This is what the automatic polarity indication for DC voltage refers to,
5. General information
5.1 General details on the current clamp multimeter
5.1.1 The digital display is a 4-digit liquid crystal display with 14 mm high
numerals, complete with decimal point. The largest numerical value
which can be displayed is 9999.
5.1.2 The polarity indication 8 is automatic. Only one polarity with respect to
the socket/ polarity marking 1 marked “-” is indicated.
5.1.3 The BENNING CM 5-1 can be switched on/ off by means of the key
(grey) J. For switching it off, press and hold the key for approx. 3
seconds.
5.1.4 The overranging is indicated by “0L” or “- 0L” and, in part, an acoustic
warning.
Warning, no indication and prior warning in the event of an overload
condition!
5.1.5 Null balance (ZERO)
Press the key (grey) J for approx. 1 second to carry out a null balance
for direct current (DC) measurements. The null balance is indicated by
a flashing „ZERO“ symbol 5 on the digital display.
5.1.6 Storage of measured values „HOLD“: The measuring result can
be stored by actuating the key (grey) J. The „HOLD“ symbol O
simultaneously appears on the display. By pressing the key J again,
the device is switched back to the measuring mode.
With the storage of measured values „HOLD“ being activated, the
multimeter recognizes a measuring signal deviating from the displayed
value, if the measuring signal of the same unit has increased by
50 digits or if a measuring signal of another measuring function is
detected. The change of measuring signal is indicated by a flashing
display or by a continuous acoustic signal.
5.1.7 Automatic storage of measured values „AutoHOLD“ (only for AC/ DC
measurements higher than 3 A): If during switch-on the key (grey) J is
pressed for more than 5 seconds, the „AutoHOLD“ symbol O flashes
on the display and „AutoHOLD“ is activated. If the multimeter detects
a constant measured value, the buzzer can be heard three times and
the measured value will be shown on the display together with the
„AutoHOLD“ symbol for approx. 5 seconds. The measured value can
be stored by actuating the key (grey) J. With the „AutoHOLD“ function
09/ 2009
BENNING CM 5-1
12
being activated, the APO function is deactivated.
5.1.8 The measuring rate of the BENNING CM 5-1 amounts nominally to 5
measurements per second for the digital display.
5.1.9 The BENNING CM 5-1 is provided with a self-test function. Do not
use the BENNING CM 5-1, if „FAIL“ is shown on the display. In case
of an error, switch the device off an on again. If the error persists,
send the BENNING CM 5-1 to our service address (see section 9.4
„Calibration“).
5.1.10 The BENNING CM 5-1 is switched off automatically after approx. 20
minutes (APO, Auto-Power-Off). It switches on again when the key
(grey) J is actuated. A buzzer sound indicates the automatic switch-off
of the device. The automatic switch-off can be deactivated by pressing
the key J for approx. 3 seconds during switch-on. The automatic
switch-off is indicated by a flashing „APO“ symbol 6 on the digital
display. When switching the device on again, briefly press the key J to
reactivate the automatic switch-off.
5.1.11 Temperature coefficient of the measured value: 0.2 x (stated measuring
precision)/ °C < 18 °C or > 28 °C, related to the value for the reference
temperature of 23 °C.
5.1.12 The BENNING CM 5-1 is supplied by a fitted 9 V block battery (IEC 6
LR 61).
5.1.13 If the battery voltage drops below the specified operating voltage of the
BENNING CM 5-1, then a battery symbol 9 appears on the display.
5.1.14
The life span of a battery amounts to approx. 125 hours (alkali battery).
5.1.15 Appliance dimensions:
(L x W x H) = 215 x 85 x 51 mm
Appliance weight: 360 g
5.1.16 The safety measuring leads are designed in 4 mm plug-in type
technology. The safety measuring leads supplied are expressly suited
for the rated voltage and the rated current of the BENNING CM 5-1.
5.1.17 Largest opening of pliers: 35 mm
5.1.18 Largest cable diameter: 30 mm
6. Ambient conditions:
- The BENNING CM 5-1 is intended for making measurements in dry
environment.
- Maximum barometric elevation for making measurements: 2000 m,
- Overvoltage category/ setting category: IEC 60664-1/ IEC 61010-1 →
600 V category IV, 1000 V category III
- Contamination class: 2,
- Protection class: IP 30 (DIN VDE 0470-1 IEC/ EN 60529)
IP 30 means: Protection against access to dangerous parts and protection
against solid impurities of a diameter > 2.5 mm, (3 - first index). No
protection against water, (0 - second index).
- Operating temperature and relative humidity:
For operating temperatures from 0 °C to 30 °C: relative humidity less than
80 %
For operating temperatures from 31 °C to 40 °C: relative humidity less than
75 %
For operating temperatures from 41 °C to 50 °C: relative humidity less than
45 %
- Storage temperature: The BENNING CM 5-1 can be stored at any
temperature within the range of - 20 °C to + 60 °C (relative humidity from 0
to 80 %). The battery should be removed from the instrument for storage.
7. Electrical specifications
Note: The measuring precision is specified as the sum of
- a relative fraction of the measured value and
- a number of digits (counting steps of the least significant digit).
This specified measuring precision is valid for temperatures within the range of
18 °C to 28 °C and for a relative humidity lower than 80 %.
7.1 Priority of the AUTOTEST function
The AUTOTEST function automatically switches to the correct measuring
function and automatically selects the ideal measuring range: For this, the
BENNING CM 5-1 works according to the following order:
09/ 2009
BENNING CM 5-1
13
The following criteria must be met:
Voltage measurement active, if:
VAC, V
DC
whichever is greater
Ω
Resistance/ continuity
/
Diode
AAC, A
DC
whichever is greater
7.2 Direct voltage ranges
The input resistance for voltages of up to 30 V is at least 4 kΩ. The input resistance
increases to 375 kΩ for 750 V with the input voltage increasing as well.
Measuring range Resolution Meas. precision
2.1 V ... 1000 V 0.1 V ± (0.3 % of the measuring value + 2 digits) 750 V
- 0.7 V … - 1000 V 0.1 V ± (0.3 % of the measuring value + 2 digits) 750 V
*1
Maximum measuring time = 30 seconds for voltages higher than 30 V
7.3 Alternating voltage ranges
The input resistance for voltages of up to 30 V is at least 4 kΩ. The input
resistance increases to 375 kΩ for 750 V with the input voltage increasing as
well.
Measuring range Resolution
within the frequency range 50 Hz - 60 Hz
1.3 … 750 V 0.1 V ± (0.9 % of the measuring value + 3 digits) 750 V
within the frequency range 61 Hz - 500 Hz
1.3 … 750 V 0.1 V ± (1.5 % of the measuring value + 3 digits) 750 V
*1
Maximum measuring time = 30 seconds for voltages higher than 30 V
*2
The measuring value is gained and indicated as effective value (True RMS,
AC coupling). The measuring accuracy is specified for sinusoidal curves
and applies to the final value of the measuring range as well as for nonsinusoidal curves up to 50 % of the final value of the measuring range.
In case of non-sinusoidal curves, the indicating value becomes inaccurate.
Thus, an additional error occurs for the following crest factors:
crest factor from 1.4 to 2.0 additional error + 1 %
crest factor from 2.0 to 2.5 additional error + 2.5 %
crest factor from 2.5 to 3.0 additional error + 4 %
7.4 Direct current ranges
Measuring range Resolution Meas. precision
0.9 A …600.0 A 0.1 A ± (1.5 % of the measuring value + 5 digit) 600 A
The indicated accuracy is specified for conductors which are gripped by
means of the measuring clamp in the middle (see figure 3 direct/ alternating
current measurement). For conductors which are not gripped in the middle, an
additional error of 1 % of the indicating value has to be considered.
Maximum remanence error: 1 % (during repeating measurement)
7.5 Alternating current ranges
Measuring range Resolution
Meas. precision
within the frequency range 50 Hz - 60 Hz
0.9 A …600.0 A 0.1 A ± (1.5 % of the measuring value + 5 digit) 600 A
within the frequency range 61 Hz - 400 Hz
0.9 A ... 600.0 A 0.1 A ± (2 % of the measuring value + 5 digit) 600 A
09/ 2009
BENNING CM 5-1
1.3 VAC ... 750.0 V
2.1 VDC ... 999.9 V
- 0.7 VDC … - 999.9 V
Resistance measurement active, if
0 Ω ... ∞ Ω
0.0 VAC ... 0.9 V
- 0.4 VDC ... - 0.2 V
1.0 VDC ... 2.0 V
Diode test active, if:
0.4 VDC ... 0.8 VDC (forward voltage)
Current measurement active, if:
0.9 AAC ... 600.0 A
0.9 ADC ... 600.0 A
Meas. precision
*2
*2
AC
DC
DC
AC
DC
DC
AC
DC
Overload
protection
protection
Overload
protection
Overload
protection
*1
eff
eff
Overload
eff
eff
eff
eff
eff
14
*1
*2
The measuring value is gained and indicated as effective value (true RMS,
AC coupling). The measuring accuracy is specified for sinusoidal curves
and applies to the final value of the measuring range as well as for non-
sinusoidal curves up to 50 % of the final value of the measuring range.
In case of non-sinusoidal curves, the indicating value becomes inaccurate.
Thus, an additional error occurs for the following crest factors:
crest factor from 1.4 to 2.0 additional error + 1 %
crest factor from 2.0 to 2.5 additional error + 2.5 %
crest factor from 2.5 to 3.0 additional error + 4 %
The stated precision is specified for conductors that are centrally clamped by
the current clamp (see fig. 3 direct/ alternating current measurement). For
conductors that are not centrally clamped, an additional error of 1 % of the
display value needs to be taken into account.
7.6 Resistance measuring range and acoustic continuity testing
Overload protection: AC 750 V
Measuring range Resolution Meas. accuracy Max. idling voltage
0 Ω ... 999 Ω 1 Ω ± (0.9 % of the measuring value + 2 digits) 1.8 V
The built-in buzzer sounds in the case of a resistance R less than 25 Ω up to
400 Ω. For a resistance R higher than 400 Ω (specified for temperatures of 0 °C
up to 40 °C), the buzzer does not emit an acoustic signal.
7.7 Diode testing
Overload protection: AC 750 V
Measuring range Resolution Meas. accuracy Max. idling voltage
0.4 V … 0.8 V 0.1 V ± (0.9 % of the measuring value + 2 digits) 1.8 V
8. Measuring with the BENNING CM 5-1
8.1 Preparations for measuring
Operate and store the BENNING CM 5-1 only at the specified storage and
operating temperatures conditions. Avoid continuous insulation.
- Check rated voltage and rated current details specified on the safety
measuring leads. The nominal voltage and current ratings of the safety
measuring leads included in the scope of delivery correspond to the ratings
of the BENNING CM 5-1.
- Check the insulation of the safety measuring leads. Discard the safety
measuring leads immediately if the insulation is damaged.
- Check safety measuring leads for continuity. If the conductor in the safety
measuring lead is interrupted, the safety measuring lead must be dispose
of immediately.
- Strong sources of interference in the vicinity of the BENNING CM 5-1 can
lead to unstable readings and measuring errors.
- It is only possible to make measurements, if the conditions of the
AUTOTEST function are met (see section 7.1 „Priority of the AUTOTEST
function“).
Note:
Clocked signals, e.g. currents generated by chargers, might result in an
incorrect AC/ DC indication.
8.2 Voltage measuring
Do not exceed the maximum permitted voltage with respect to
earth potential! Electrical danger!
The highest voltage which may be applied to the jacks,
- COM socket K
- jack for V, Ω and L
of the BENNING CM 5-1 against ground, amounts to 600 V CAT IV/ 1000 V
CAT III.
- Switch the BENNING CM 5-1 on by means of the key (grey) J.
- The black safety measuring lead has to be contacted with the COM jack K
on the BENNING CM 5-1.
- The red safety measuring lead has to be connected to the jack for V, Ω and
L on the BENNING CM 5-1.
- Bring the safety measuring leads into contact with the measuring points.
- On the digital display , the AUTOTEST function is shown by the
„AutoSense“ symbol 4. It automatically determines the required measuring
function (voltage) and the ideal measuring range.
09/ 2009
/ DC 1000 V
eff
/ DC 1000 V
eff
BENNING CM 5-1
15
- Read the measured value on the digital display on the
BENNING CM 5-1.
Please observe the restrictions in the lower measuring range!
DC voltage measurements are not possible within the range of
- 0.7 VDC ... 2.1 VDC.
AC voltage measurements are only possible starting from
voltages of > 1.3 VAC.
See figure 2: Direct/ alternating voltage measurement with AUTOTEST
8.3 Current measurement
- Switch the BENNING CM 5-1 on by means of the key (grey) J.
- Operate opening lever 3, clamp single wire live conductor centrally by
means of the BENNING CM 5-1 current clamp.
- On the digital display , the AUTOTEST function is shown by the
„AutoSense“ symbol 4. It automatically determines the required measuring
function (current) and the ideal measuring range.
- Read the measured value on the digital display on the
BENNING CM 5-1.
See figure 3: Direct/ alternating current measurement with AUTOTEST
8.4 Resistance measuring and acoustic continuity testing
- Switch the BENNING CM 5-1 on by means of the key (grey) J.
- The black safety measuring lead has to be contacted with the COM jack K
on the BENNING CM 5-1.
- The red safety measuring lead has to be connected to the jack for V, Ω and
- Bring the safety measuring leads into contact with the measuring points.
- On the digital display , the AUTOTEST function is shown by the
„AutoSense“ symbol 4. It automatically determines the required measuring
function (resistance/ continuity) and the ideal measuring range.
- Read the measured value on the digital display on the
BENNING CM 5-1.
- If the conductor resistance between the COM jack K and the jack for
V, Ω and L 25 Ω up to 400 Ω, the fitted buzzer sounds on the
BENNING CM 5-1.
See figure 4: Resistance measurement
See figure 5: Continuity testing with buzzer
8.5 Diode testing
- Switch the BENNING CM 5-1 on by means of the key (grey) J.
- The black safety measuring lead has to be contacted with the COM jack K
on the BENNING CM 5-1.
- The red safety measuring lead has to be connected to the jack for V, Ω and
- Bring the safety measuring leads into contact with the measuring points.
- On the digital display , the AUTOTEST function is shown by the
„AutoSense“ symbol 4. It automatically determines the required measuring
function (diode) and the ideal measuring range.
- Read the measured value on the digital display on the
BENNING CM 5-1.
- For a standard Si diode applied in conduction direction, a conduction
voltage between 0.4 V and 0.8 V is displayed. If no forward voltage is
detected, first check the polarity of the diode. If still no forward voltage is
displayed, the forward voltage of the diode is beyond the measuring limits.
See figure 6: Diode testing
9. Maintenance
Work on the opened BENNING CM 5-1 under voltage may be carried out
only by skilled electricians with special precautions for the prevention of
accidents.
09/ 2009
function
Do not apply any voltage to the contacts of the BENNING CM 5-1!
Any possibly connected safety measuring leads have to be
removed.
function
L on the BENNING CM 5-1.
L on the BENNING CM 5-1.
Before opening the BENNING CM 5-1, make sure that it is free
of voltage! Electrical danger!
BENNING CM 5-1
16
Make sure that the BENNING CM 5-1 is free of voltage as described below
before opening the instrument:
- First remove the two safety measuring leads from the object to be
measured.
- Then disconnect the two safety measuring leads from the
BENNING CM 5-1.
- Switch off the BENNING CM 5-1. For switching it off, press and hold the key
(grey) J for approx. 3 seconds.
9.1 Securing the instrument
Under certain circumstances safe operation of the BENNING CM 5-1 is no
longer ensured, for example in the case of:
- Visible damage of the casing.
- Incorrect measurement results.
- Recognisable consequences of prolonged storage under improper
conditions.
- Recognisable consequences of extraordinary transportation stress.
- Failure of the self-test; „FAIL“ is shown on the display.
In such cases the BENNING CM 5-1 must be switched off immediately,
disconnected from the measuring points and secured to prevent further
utilisation.
9.2 Cleaning
Clean the exterior of the housing with a clean dry cloth (exception: special
cleaning wipers). Avoid using solvents and/ or scouring agents for cleaning
the instrument. It is important to make sure that the battery compartment and
battery contacts are not contaminated by leaking electrolyte.
If electrolyte contamination or white deposits occur in the area of the batteries
or battery compartment, clean them too with a dry cloth.
9.3 Battery replacement
Before opening the BENNING CM 5-1, make sure that it is free
of voltage! Electrical danger!
The BENNING CM 5-1 is fed by a 9 V block battery.
A battery replacement (see figure 7) is required, if the battery symbol 9 appears
on the display .
Proceed as follows to replace the batteries:
- Disconnect the safety measuring leads from the measuring circuit.
- Disconnect the safety measuring leads from the BENNING CM 5-1.
- Switch off the BENNING CM 5-1.
- Lay the BENNING CM 5-1 face down and release the screws of the battery
compartment cover.
- Lift the battery compartment lid (in the housing recess area) from the bottom
part.
- Lift the discharged battery from the battery compartment and disconnect the
battery supply lines from the battery.
- The new battery have to be connected to the battery supply lines, and
arrange these such that they are not crushed between the housing parts.
Then place the battery into the battery compartment provided for this
purpose.
- Place the battery compartment cover onto the bottom part and tighten the
screw.
See figure 7: Battery replacement
Make your contribution to environmental protection!
Do not dispose of discharged batteries in the household
garbage. Instead, take them to a collecting point for discharged
batteries and special waste material. Please inform yourself in
your community.
9.4 Calibration
To maintain the specified accuracy of the measurement results, the instrument
must be recalibrated at regular intervals by our factory service. We recommend
a recalibration interval of one year. Send the multimeter to the following
address:
Benning Elektrotechnik & Elektronik GmbH & CO. KG
Service Centre
Robert-Bosch-Str. 20
D - 46397 Bocholt
09/ 2009
BENNING CM 5-1
17
10. Technical data of the measuring accessories
4 mm Safety test leads ATL 2
- Standard: EN 61010-031,
- Maximum rated voltage to earth () and measuring category:
1000 V CAT III, 600 V CAT IV,
- Maximum rated current: 10 A,
- Protective class II (), continuous double or reinforced insulation,
- Contamination class: 2,
- Length: 1.4 m, AWG 18,
- Environmental conditions:
Maximum barometric elevation for making measurements: 2000 m,
Temperatures: 0 °C to + 50 °C, humidity 50 % to 80 %
- Only use the test leads if in perfect condition and according to this manual,
since the protection provided could otherwise be impaired.
- Throw the test leads out if the insulation is damaged or if there is a break in
the cable/ plug.
- Do not touch the bare contact tips of the test leads. Only grab the area
appropriate for hands!
- Insert the angled terminals in the measuring device.
11. Environmental note
At the end of the product’s useful life, please dispose of the device at
collection points provided in your community.
09/ 2009
BENNING CM 5-1
18
Benning Elektrotechnik & Elektronik GmbH & Co. KG
Phone: +49 (0) 2871 - 93 - 0 • Fax: +49 (0) 2871 - 93 - 429
www.benning.de • E-Mail: duspol@benning.de
Münsterstraße 135 - 137
D - 46397 Bocholt
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