Gossen MetraWatt METRALINE DM 41 Operating Instructions Manual
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Gossen MetraWatt METRALINE DM 41 Operating Instructions Manual

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Operating Instructions
METRALINE DM 41
3-447-024-03
Digital Multimeter
2/2.19

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Summary of Contents for Gossen MetraWatt METRALINE DM 41

  • Page 1 Operating Instructions METRALINE DM 41 3-447-024-03 Digital Multimeter 2/2.19...
  • Page 2 GMC-I Messtechnik GmbH...
  • Page 3 Multimeter Operating Elements 1 LCD display 2 Multifunction pushbutton (yellow) 3 Pushbutton for relative value 4 Pushbutton for automatic or manual range selection 5 Hz/% pushbutton for V AC & V DC 6 Pushbutton for Data HOLD function 7 Pushbutton for backlight function (optional) 8 Function selector switch for ON/OFF and measurement function 9 Terminal sockets...

  • Page 4: Table Of Contents

    Contents Page Safety Features and Safety Precautions ........6 Initial Start-Up ................9 Function and Range Selection ..........10 Measuring Function Selection ..............10 Automatic Measuring Range Selection .............10 Manual Measuring Range Selection ............10 Liquid Crystal Display (LCD) .............11 Digital Display ..................11 Display with Backlight (Optional) ..............11 Buzzer ..................12 Measurement Value Storage „HOLD“...
  • Page 5 Technical Characteristics ............24 Maintenance ................30 16.1 Battery ....................30 16.2 Fuses .....................32 16.3 Housing ....................33 16.4 Returns and Environmentally Sound Disposal ..........34 Product Support ............... 35 Repair and Replacement Parts Service Calibration Center* and Rental Instrument Service ....35 Manufacturer‘s Warranty ............

  • Page 6: Safety Features And Safety Precautions

    Safety Features and Safety Precautions You have selected an instrument which provides you with a high level of safety. The digital multimeter is manufactured in compliance with safety regulations. In case of incorrect use or careless han- dling, the safety of both user and multimeter is not assured. To maintain the safe and proper condition of the multimeters and to ensure their safe operation, it is absolutely necessary to carefully and completely read these operating instructions before using any multi-...
  • Page 7 • Measurements under moist ambient conditions are not permitted. • Do not exceed the permissible overload limits of the mea- suring ranges. Limit values can be found in the table „Mea- suring Ranges“ in chapter 15 „Technical Characteristics“. • All current ranges are equipped with fuses. The maximum allowable voltage for the measuring current circuit is equal to 600 V~.
  • Page 8 Opening of Equipment / Repair The equipment may be opened only by authorized service per- sonnel to ensure the safe and correct operation of the equip- ment and to keep the warranty valid. Even original spare parts may be installed only by authorized service personnel.

  • Page 9: Initial Start-Up

    Initial Start-Up Batteries Please refer to chapter 16.1 on page 30 before initial start-up of your instrument or after a lengthy period of storage. Switching the Multimeter ON Turn the function selector switch from the OFF position to the desired measuring function. All segments of the LCD are activated briefly.

  • Page 10: Function And Range Selection

    Function and Range Selection 3.1 Measuring Function Selection The desired measuring function is selected with the function selector switch (white or green print). In order to select the function printed in green color, the yellow multifunction key must also be pressed. If the multifunction key is pressed again, the function printed in white half circle is reactivated.

  • Page 11: Liquid Crystal Display (Lcd)

     Acknowledge- ment AUTO Function Acoust. Display Signal Manual mode ON: brief utilized measuring range is fixed 400 mV → 4 V → 40 V → 400 V → 600 V → 400 mV → 4 V → ... /: 4 V → 40 V→ 400 V → 600 V → 400 mV → ... : 40 mA →...

  • Page 12: Buzzer

    Buzzer The following steps are acknowledged ba an acoustic signal: • Activation or deactivation of the following functions: AUTO/MAN, REL or HOLD, Hz / %, Backlight. • When AC voltage > 750 V is applied, DC voltage > 1000 V, AC/DC mA >...

  • Page 13: Voltage Measurement

    Voltage Measurement ➭ Turn the function selector switch to V . ➭ Connect the measurement cable as shown. Terminal „ “ should be grounded and the second measurement cable with a higher potential connected to Terminal „V“. Note! The 400 mV measuring range can only be selected manually with the „AUTO/MAN“...

  • Page 14: Current Measurement

    Current Measurement Attention! First of all, disconnect the power supply from the mea- suring circuit and/or the load and discharge any capac- itors that might be present. 1 Select function A with the function selector switch for cur- rents > 400 mA or function mA for currents < 400 mA. For measuring currents of an unknown quantity, select the high- est measuring range first.

  • Page 15: Ac Current Measurement With (Clip-On) Current Transformer

    • The 10 A current measuring range is protected by a 10 A / 600 V fuse. • If a fuse blows, eliminate the cause of the overload before placing the multimeter back into operation! • Replacement of the fuses is described in chapter 16.2 on page 32.

  • Page 16: Transformer Output Mv/A

    The maximum allowable operating voltage at the primary con- ductor is equal to the nominal voltage of the current trans- former. When reading the measured value, consider the trans- formation ratio of the transformer as well as the additional dis- play error.

  • Page 17: Diode Testing And Continuity Measurement

    10 Diode Testing and Continuity Measurement 10.1 Diode 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 „ “. ➭ Connect the device under test as shown. Conducting Direction and Short-Circuit The measuring instrument displays the forward voltage in volts.

  • Page 18: Continuity Testing

    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.

  • Page 19: Resistance Measurement

    11 Resistance Measurement Attention! Verify that the device under test is electrically dead. Ex- ternal voltages would falsify the measurement results! ➭ Set the function selector switch to „Ω“. ➭ Connect the device under test as shown below. Zero Adjustment (Relative Mode) In the measurement of resistance, the inherent error of the multimeter and the resistance of leads can be eliminated by zero adjustment.

  • Page 20: Capacitance Measurement

    Capacitance Measurement Attention! Absolutely verify that the device under test is electrically dead. External voltages would falsify the measurement results! • Set the function selector switch to „F“. Connect the (discharged!) device under test to sockets „ “ and „F“ with measurement cables. Polarized capacitors must be connected to the „...
  • Page 21 Zero Adjustment (Relative Mode) For the measurement of small capacitance values in the 5 nF and 50 nF ranges, the inherent error of the multimeter and the capacitance of the leads can be eliminated by zero adjust­ ment. ➭ Connect the leads with the multimeter without device under test.

  • Page 22: Frequency And Duty Cycle Measurement

    13 Frequency and Duty Cycle Measurement 13.1 Frequency Measurement 1 Set the function selector switch to V~ (V AC) (letter white) and press the Hz/% key, as shown on page 23. The frequency measurement mode is activated. „Hz“ sym- bol is displayed on the LCD. The digital display is expanded to 9999 digits.

  • Page 23: Temperature Measurement

    2 Connections are made the same way as for voltage mea- surement. 3 Measuring range for duty cycle and maximum allowable 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.

  • Page 24: Technical Characteristics

    15 Technical Characteristics Meas. Measuring Resolution Input Digital display Overload Capacity Func- Range Impedance inherent devia- tion tion at refer- V (AC) / V Overload Val- Over- ence condition (DC) load +(...% rdg. Dura- +...digits) tion 400.0 mV 100 μV >...
  • Page 25 Meas. Measuring Resolution Input Digital display Overload Capacity Func- Range Impedance inherent devia- tion tion at refer- V (AC) / V Overload Val- Over- ence condition (DC) load +(...% rdg. Dura- +...digits) tion 5.000 nF 1 pF 3 + 40 50.00 nF 10 pF 2 + 10...
  • Page 26 Reference Conditions Ambient Temperature + 23 °C ±2 K Relative Humidity 45% ... 55% Measuring Magnitude Frequency Sine, 50 Hz Measuring Magnitude Waveform Sine 3 V ±0.1 V Battery Voltage Ambient Conditions Working Temperature Range –10 °C ... + 50 °C Storage Temperature Range –25 °C ...
  • Page 27 Influencing Quantities and Effects Influencing Measured Quantity/ Range of Influence Influence Effect Variable Measuring Range mA/A , mA/A Ω 0 °C ... +21 °C Temperature 1 x intrinsic error/K +25 °C ... +50 °C Duty (%) °C Influence Range of Influence Intrinsic Error at Ref.
  • Page 28 Power supply Battery 2 x 1.5 V mignon cell (2x AA-Size) alkaline-manganese cell per IEC LR6. Service life with alkaline-manganese cell: approx. 600 hours Battery test Automatic display of „ “ symbol when battery voltage falls below approx. 2.4 V. Fuses Fuse for ranges up to 400 mA...
  • Page 29 Electrical Safety IEC 61010-1-2010 Installation category 600 V CAT III / 300 V CAT IV Pollution degree 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...

  • Page 30: Maintenance

    16 Maintenance Attention! Disconnect the multimeter from the measuring circuit before you open it to replace the battery or the fuse! 16.1 Battery Prior to initial start-up or after storage of multimeter, verify that the batteries inserted in the multimeter do not leak. Repeat this check at regular brief intervals.
  • Page 31 Attention! When inserting the batteries, begin 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. ➭...

  • Page 32: Fuses

    16.2 Fuses The 10 A fuse interrupts the 10 A current range, and the 1.6 A fuse protects the mA current measuring ranges. All other mea- suring ranges continue to function. When a fuse blows, eliminate the cause of the overload before putting the instrument back into operation! Replacing the Fuses ➭...

  • Page 33: Housing

    Fuse Testing ➭ Take out the fuse to be tested. ➭ Set the function selector switch to ➭ Press the yellow function key to select ➭ Connect the measurement cable with the „V, Ω, F“ socket. ➭ Measure the resistance of the fuse. ➭...

  • Page 34: Returns And Environmentally Sound Disposal

    16.4 Returns and Environmentally Sound Disposal The instrument is a category 9 product (monitoring and control instrument) in accordance with ElektroG (German Electrical and Electronic Device Law). This device is subject to the RoHS directive. Furthermore, we make reference to the fact that the current status in this regard can be accessed on the Internet at www.gossenmetrawatt.com by entering the search term WEEE.

  • Page 35: Product Support

    17 Product Support If required please contact: GMC-I Messtechnik GmbH Product Support Hotline Phone: +49 911 8602-0 Fax: +49 911 8602-709 E-mail support@gossenmetrawatt.com 18 Repair and Replacement Parts Service Calibration Center* and Rental Instrument Service If required please contact: GMC-I Service GmbH Service Center Beuthener Str.

  • Page 36: Manufacturer's Warranty

    19 Manufacturer‘s Warranty Digital multimeters of the METRALINE DM series are guaran- teed 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.

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