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GMC-I Messtechnik GmbH

10.2 Continuity Testing

Attention!

!

Verify that the device under test is electrially dead. Ex-
ternal voltages would falsify the measurement results!

➭

Set the function selector switch to „

“.

➭

Press the yellow multifunction key to switch to the continu-
ity measuring range.

Display of the

symbol is activated.

The instrument generates a continuous acoustic signal at a
measured resistance of 0 to approx. < 75

Ω.

➭

Connect the device under test as shown below.

P$

9

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Содержание METRALINE DM 41

Страница 1: ...METRALINE DM 41 Digital Multimeter 3 447 024 03 2 2 19 Operating Instructions ...

Страница 2: ...2 GMC I Messtechnik GmbH P 9 ...

Страница 3: ...or switch for ON OFF and measurement function 9 Terminal sockets LCD Display 1 Digital display with indication of decimal point and polarity 2 Display of selected current voltage type 3 Display for automatic measuring range selection 4 REL HOLD display 5 Continuity test display buzzer indication 6 Diode measurement display 7 Low battery display 8 Display for unit of measured quantity Standard Equi...

Страница 4: ...5 Buzzer 12 6 Measurement Value Storage HOLD 12 7 REL Relative Value Measurement 12 8 Voltage Measurement 13 9 Current Measurement 14 9 1 AC Current Measurement with Clip on Current Transformer 15 9 1 1 Transformer Output mA A 15 9 1 2 Transformer Output mV A 16 10 Diode Testing and Continuity Measurement 17 10 1 Diode Testing 17 10 2 Continuity Testing 18 11 Resistance Measurement 19 12 Capacitan...

Страница 5: ...nance 30 16 1 Battery 30 16 2 Fuses 32 16 3 Housing 33 16 4 Returns and Environmentally Sound Disposal 34 17 Product Support 35 18 Repair and Replacement Parts Service Calibration Center and Rental Instrument Service 35 19 Manufacturer s Warranty 36 20 Registration 36 ...

Страница 6: ... know how to apply safety precautions Shock hazards exist anywhere where voltages of more than 30 V TRMS may occur Do not work alone in shock hazardous environment while carrying out measurement The maximum allowable voltage between any terminal sockets 1 and earth is equal to 600 V Voltages of greater than 500 V may only be applied to sockets and V with the selector switch in the voltage measurem...

Страница 7: ...able voltage for the measuring current circuit is equal to 600 V The instrument may only be used in power installations when the electrical circuit is protected with a 20 A fuse or circuit breaker and the nominal voltage of the installation does not exceed 600 V Meaning of the symbols on the device Warning concerning a source of danger Attention refer to the operating instructions Earth ground ter...

Страница 8: ...fter opening the multimeter live parts may be exposed Therefore the multimeter must be disconnected from the mea suring circuit prior to opening its housing for repair replace ment of parts or calibration If repair or calibration cannot be avoided unless the multimeter is open and live this work must be performed by a qualified person who understands the dan gers involved Faults and Extraordinary ...

Страница 9: ...ference may cause incorrect displays and block the measuring sequence Reset the multimeter by switching it OFF and ON again If this procedure is unsuccessful briefly dis connect the battery from the contact terminals Attention Before opening disconnect the multimeter from the measur ing circuit and observe chapter 16 on page 30 Automatic Meter OFF MoFF Your multimeter switches OFF automatically af...

Страница 10: ... Automatic selection is functional as soon as the multimeter is switched ON According to the measured quantity applied the multime ter automatically selects the measuring range which gives the best resolution 3 3 Manual Measuring Range Selection You can switch OFF auto ranging Select and fix the ranges manually according to the table given on page 11 First select the desired measuring function wit...

Страница 11: ...input terminal OL is displayed if the measuring range upper limit is exceeded The digital display is updated three times per second for V A Ω Cap Freq and duty cycle measurements 4 2 Display with Backlight Optional By pressing the key the backlight can be switched ON or OFF to enable the user to take measurements in poor lighting conditions AUTO MAN Function Acknowledge ment Display Acoust Signal ...

Страница 12: ...multimeter switches off the buzzer generates one long acoustic signal to warn the user 6 Measurement Value Storage HOLD By pressing the HOLD key the currently displayed measured value can be held and HOLD is displayed at the same time on the LCD The HOLD display is switched off if the HOLD key is reactivated the function selector switch is operated the yellow multifunction key is activated for a c...

Страница 13: ...cting your multi meter for voltage measurement If the limit values for fuse tripping are exceeded due to an operating error both the operator and the instrument are in danger Ob serve the voltage limit values printed on the multimeter Select the respective voltage type AC or DC which corre sponds to the measuring value by briefly pressing the yel low multifunction key Each activation of the key ca...

Страница 14: ...lected current type on the LCD After selection of this function with the selector switch the cur rent type DC is always activated 3 Connect the measuring instrument in series to the load as shown without contact resistance Notes on Current Measurement The multimeter must be used only in the power systems where the current circuit is protected by a fuse or a circuit breaker of 20 A and when the nom...

Страница 15: ... If current transformers are operated with an open circuit on the secondary side e g due to defective or discon nected leads a blown fuse in the multimeter or a wrong connection dangerously high voltages may occur at the connectors Therefore make sure that the current circuit of the multimeter and secondary winding of the transformer connected to the multimeter form an intact circuit Connect the t...

Страница 16: ...transformer as well as the additional dis play error 9 1 2 Transformer Output mV A Some transformers have a voltage output referred to as mV A The secondary output must therefore be connected to the connection sockets and V When reading the measured values in V consider the transfor mation ratio of the transformer and the fact that the display shows current values as well as the additional display...

Страница 17: ... test as shown Conducting Direction and Short Circuit The measuring instrument displays the forward voltage in volts As long as the voltage drop does not exceed the maximum display value of 1 000 V you can test several elements con nected in series Reverse Direction or Interruption The measuring instrument displays a voltage of OL Note Resistors and semiconductor paths in parallel to the diode dis...

Страница 18: ...ould falsify the measurement results Set the function selector switch to Press the yellow multifunction key to switch to the continu ity measuring range Display of the symbol is activated The instrument generates a continuous acoustic signal at a measured resistance of 0 to approx 75 Ω Connect the device under test as shown below P 9 ...

Страница 19: ...of leads can be eliminated by zero adjustment Short circuit the leads connected with the multimeter Press the REL key The instrument acknowledges zero adjustment with an acoustic signal and values close to 00 and REL are displayed on LCD The resistance measured at the time the REL key is pressed serves as a reference value This value is then automatically deducted from all measured values Deleting...

Страница 20: ... selector switch to F Connect the discharged device under test to sockets and F with measurement cables Polarized capacitors must be connected to the socket at the pole Note Resistors and semiconductor paths in parallel to the capacitor falsify the measurement results To measure small value capacitors please use short measurement cables If the symbol is displayed the measured values are not valid ...

Страница 21: ...hout device under test Briefly Press the REL key The instrument acknowledges zero adjustment with an acous tic signal and a value close to 00 00 and REL are displayed on the LCD The capacitance measured at the moment the key is activated serves as a reference value This value is then automatically deducted from all measured values Deleting Zero adjustment Press REL key Clearance is acknowledged by...

Страница 22: ...e maximum allowable voltages are specified in chapter 15 Technical Characteristics 13 2 Duty Cycle Measurement With duty cycle measurement we can determine the ratio of pulse duration to cycle time of recurring square wave signals The duty cycle which is the percentage pulse duration of a signal is displayed on the LCD as follows Note The applied frequency must remain constant during the duty cycl...

Страница 23: ...wable voltage can be found in chapter 15 Technical Characteris tics 14 Temperature Measurement The multimeter allows you to measure temperature with a K type thermocouple NiCr Ni in the range of 50 C to 1300 C Set the function selector switch to C Connect the sensor as shown below 9a 3UHVV NH 3UHVV NH 3UHVV NH 3UHVV NH P 9 W SH VHQVRU P 9 ...

Страница 24: ...μV 11 MΩ 1 5 5 1050 V AC rms Conti nuous 4 000 V 1 mV 11 MΩ 1 5 40 00 V 10 mV 10 MΩ 400 0 V 100 mV 10 MΩ 600 V 1 V 10 MΩ 1 10 approx voltage drop at max meas current A 40 00 mA 10 μA 450 mV 0 8 2 480 mA Conti nuous 400 0 mA 100 μA 4 2 V 10 00 A 1 10 mA 750 mV 1 5 5 A 40 00 mA 10 μA 450 mV 1 5 480 mA Conti nuous 400 0 mA 100 μA 4 2 V 10 00 A 1 10 mA 750 mV 2 5 Open circuit volt Ω 400 0 Ω 100 mΩ app...

Страница 25: ... 2 4 200 0 μF 100 nF 5 10 5 f min Hz 2 10 000 Hz 0 001 Hz 1 Hz 0 2 2 1kHz 1000 V 10 kHz 400 V 500 kHz 40 V except 400 mV Conti nuous 100 00 Hz 0 01 Hz 1 0000 kHz 0 1 Hz 10 000 kHz 1 Hz 100 00 kHz 10 Hz 500 0 kHz 100 Hz 2 0 98 0 0 1 10 Hz 1 kHz 5D 1 kHz 10 kHz 5D kHz Sensor C 0 1300 C 1 C K type NiCr Ni 2 3 500 V DC AC rms 10 min 50 0 C 1 C 2 0 10 Meas Func tion Measuring Range Resolution Input Imp...

Страница 26: ...perature Range 25 C 70 C Relative Humidity 45 75 Elevation up to 2000 m Display LCD display field 58 mm x 31 4 mm with digital display and display of unit of measure current type and various special functions Digital Display Char Height 7 segment digits 15 mm Number of Places 3 place equals 3999 steps Overflow Display OL Polarity Display sign is displayed when plus pole is at Measuring Rate 3 meas...

Страница 27: ...rdg D Frequency VAC 4 40 400 V 20 Hz 50 Hz 50 Hz 1 kHz 2 3 400 mV 600 V 20 Hz 50 Hz 50 Hz 500 Hz 2 3 Influence Variable Range of Influence Measured Quantity Measuring Range Influence Effect Relative Humidtiy 55 75 V AC DC mA A AC DC Ω F Hz C 1 x intrinsic error Influencing Variable Interference Quantity Measuring Range Attenuation Common Mode Interference Voltage 1000 V DC AC 50 Hz sine all V DC 1...

Страница 28: ...r ranges up to 400 mA FF 1 6A 1000V 6 3 mm x 32 mm protects all current measuring ranges up to 400 mA Fuse for 10 A range FF 10A 600V 6 3 mm x 32 mm protects all measuring ranges up to 10 A Electromagnetic compatibility EMC Emission EN 61326 2013 Class B Immunity IEC 61000 4 2 8 kV atmospheric discharge 4 kV contact discharge IEC 61000 4 3 3 V m Short term measured value deviation may occur during...

Страница 29: ...600 V CAT III 300 V CAT IV Pollution degree 2 High Voltage Test 3 5 kV IEC 61010 1 2010 Mechanical Design Protection for multimeter IP50 for terminals IP20 Dimensions W x H x D with holster 86 mm x 188 mm x 53 mm without holster 79 mm x 174 mm x 38 mm Weight approx 480 g with battery ...

Страница 30: ... oper ation When the symbol appears on the LCD replace the bat teries as soon as possible Although measurements can still be performed a reduced measuring accuracy must be taken into account in this case Replacing the Battery Unscrew the battery compartment cover from the base housing There is no need to remove the entire base of the housing Attention Remove the batteries by le vering out the nega...

Страница 31: ...in with the positive pole of the battery and fit the negative pole into place afterwards in order to avoid damage to the contacts of the positive pole Tighten the battery compartment cover with the screw Dispose of the dead batteries in an environmentally sound fashion ...

Страница 32: ... g with the help of a probe and replace it with a new one Screw the cover of the base housing onto the top again Make sure that the new fuse makes good contact The following fuses are admissible for current measuring ranges up to 400 mA type FF 1 6 A 1000 V 6 3 mm x 32 mm for the 10 A current measuring range type FF 10 A 600 V 6 3 mm x 32 mm Attention It is imperative to ensure that only the fuses...

Страница 33: ...rrent range is OK A continuous acoustic signal and the display of approx 0 0 Ω indicate that the fuse for the A current range is OK Note If a value other than those indicated above or the over flow symbol OL is indicated the corresponding fuse must be replaced 16 3 Housing No special maintenance is required for the housing Excessive contamination has an adverse effect on isolation and reduces inpu...

Страница 34: ...using the symbol shown at the right per DIN EN 50419 These devices may not be disposed of with the trash Please contact our service department regarding the return of old devices see address in Section 18 If you use batteries or rechargeable batteries in your instrument or accessories which no longer function properly they must be duly disposed of in accordance with the applicable national regulat...

Страница 35: ...471 Nürnberg Germany Phone 49 911 817718 0 Fax 49 911 817718 253 E mail service gossenmetrawatt com www gmci service com This address is only valid in Germany Please contact our representatives or subsidiaries for service in other countries DAkkS Calibration Laboratory for Measured Electrical Quantities D K 15080 01 01 accredited per DIN EN ISO IEC 17025 Accredited quantities direct voltage direct...

Страница 36: ... for a period of 3 years after shipment The manufacturer s warranty covers materials and workmanship Damage resulting from use for any other than the intended purpose or operating errors as well as any and all consequential damages are excluded Kindly register each device at myGMC after purchase in order to benefit from the 3 year warranty 20 Registration Register your device at www gossenmetrawat...

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