Operating Instructions METRALINE DM 61/62 Analog-Digital Multimeter 3-447-013-03 4/1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Liquid crystal display PMAX / PMIN pushbutton Pushbutton for MIN/MAX functions Pushbutton for manual range selection Multi function pushbutton Function selector switch Terminal sockets with automatic blocking system Pushbutton for HOLD function Pushbutton for backlight function Main display for digits, decimal point and polarity Display for manual range selection, Hold, MIN/MAX, Relative, Peak functions Overrange indication Bar graph for analog indicati
Contents Page 1 Introduction ................................................................................6 2 Safety Features and Safety Precautions ....................................6 3 Switching the Multimeter „ON“ .................................................9 4 Function and Range Selection .................................................10 4.1 4.2 Switching the Measuring Ranges .............................................................10 Auto / Manual Ranging ....................
14.1 Frequency Measurement .........................................................................24 14.2 Duty Cycle Measurement .........................................................................24 15 Temperature Measurement ..................................................... 25 16 Technical Characteristics .................................................... 26 17 Maintenance ............................................................................ 32 17.1 17.2 17.3 17.4 Battery ....
1 Introduction Thank you very much for selecting our multimeter. These multimeters are manufactured as per IS 13875 and DIN 43751. 2 Safety Features and Safety Precautions You have chosen a multimeter which provides you with a very high degree of safety. The analog-digital multimeters are manufactured and tested in compliance with the safety standard IEC 61010-1:2010/ DIN EN 61010-1:2011. In case of incorrect use or careless handling, the safety of both user and multimeter is not guaranteed.
• • • • • This multimeter must not be used for measurements on circuits with corona discharge (high voltage). Be particularly careful when measuring on HF circuits. Dangerous composite voltages may exist there. Measurements under moist environmental conditions are not permitted. Do not overload the measuring ranges beyond their allowable capacities. Limit values are given in specifications, see section 16. All current measuring ranges are protected with a fuse.
Opening of Equipment / Repair The equipment may be opened only by authorized service personnel to ensure the safe and correct operation of the equipment and to keep the warranty valid. Even original spare parts may be installed only by authorized service personnel. In case the equipment was opened by unauthorized personnel, no warranty regarding personal safety, measurement accuracy, conformity with applicable safety measures or any consequential damage is granted by the manufacturer.
3 Switching the Multimeter „ON“ Battery Your multimeter works on 2 x AA size alkaline manganese batteries per IEC LR6. They are provided with the multimeter. Before you use the multimeter for the first time or after storage, refer to section 17.1. Set the rotary knob (6) to other than the „OFF“ position to switch the multimeter ON. Switch „ON“ is acknowledged by an acoustic signal. All segments of the LCD will be displayed as shown on page 2.
4 Function and Range Selection The function selector switch (6) is coupled with the Automatic terminal Blocking System (ABS) which allows access only to two correct sockets for each function. Prior to switching to the „mA“ or „A“ functions or from the „mA“ or „A“ functions, remove the test lead from the corresponding socket. When the test leads are plugged in, the terminal blocking system prevents accidental switching to non permissible functions. 4.
AUTO/ MAN (4) Function brief Manual mode ON: utilized measuring range is fixed MAN (11) brief Range switching sequence for: 6.6 V → 66 V → 660 V → 1000 V → 660 mV → 6.6 V ... mA AC/mA DC: 66 mA → 660 mA → 66 mA ... Ω: 660 Ω → 6.6 kΩ → 66 kΩ → 660 kΩ → 6.6 MΩ → 66 MΩ → 660 Ω F: 6.6 nF → 66 nF → 660 nF → 6.6 μF → 66 μF 660 μF → 6.6 mF → 40 mF → 6.6 nF ... Hz: 66 Hz → 660 Hz → 6.6 kHz → 66 kHz → 660 kHz → 6.6 MHz → 10 MHz → 66 Hz...
Main Display Voltage Voltage Frequency Current Sub-display Frequency Min/Max Duty cycle Frequency 5.2 Analog Indication The analog indication with bar graph is updated 28 times per second. Analog indication is of particular use when observing variations of measured values. The analog bar graph (13) has its own polarity indication in measuring DC quantities, when the positive pole of the measured quantity is applied to the „ “ input terminal.
6 HOLD and Delay Hold Feature 6.1 HOLD Feature After pressing the „HOLD“ (8) button, the multimeter stops updating the LCD panel. After enabling the HOLD function, the multimeter switches from AUTO to the manual ranging mode, but the measuring range remains the same. 6.2 Delay Hold Feature The multimeter provides a delay HOLD feature. To activate the delay HOLD feature, press the „HOLD“ (8) button for 2 seconds. The multimeter will wait for 6 seconds, then enters HOLD mode.
makes the multimeter stop updating the maximum or the minimum value. Note MIN/MAX function is available in all measuring ranges except in Hz. 8 Peak Measurement METRALINE DM 61 and 62 provide a peak hold function to capture the maximum or minimum peak value. To enter peak mode, press the PEAK (2) pushbutton for less than 1 second. A self-calibration process will be executed automatically before normal peak-hold operation.
9 Voltage Measurement According to the voltage to be measured, set the function selector switch (6) to V AC or V DC. Connect the test leads as shown. The „ “ socket should be connected to the lowest potential ground available. In V AC mode, the main display always shows voltage and the sub-display shows frequency. Note The 660 mV measuring ranges can only be selected manually with the „AUTO/MAN“ (4) pushbutton.
10 • • • • • • • Current Measurement First disconnect the power supply to the circuit being measured and/or to the load, and discharge all capacitors within that circuit. With the function selector switch (6), select A for currents > 660 mA and mA for currents ≤ 660 mA. When measuring current of unknown magnitude, select the highest measuring range first. Select the function corresponding to the measured quantity by briefly pressing the yellow multi-function (5) pushbutton.
• • The cut-out capacity of the fuse is 10 kA at a rated voltage of 1000 V AC/DC and ohmic load. The 10 A current measuring ranges are protected by a 10 A / 1000 V AC/DC fuse. The cut-out capacity of the fuse is 30 kA at a nominal voltage of 1000 V AC/DC and ohmic load. Replacement of the fuses is described in section 17. 10.1 AC Current Measurement with (Clip-on) Current Transformer 10.1.1 Transformer Output mA/A Caution If current transformers are operated with an open circuit on the secondary side, e.
10.1.2 Transformer Output V Many transformers have a voltage output (referred to as mV/A). The secondary output must therefore be connected to the connection sockets „ “ and „V“.
11 • • • Resistance Measurement Verify that the device under test is electrically dead. External voltages would falsify the measured result! Set the function selector switch (6) at „Ω“. Connect the device under test as shown. Zero adjustment on the 660 Ω measuring range When measuring small resistance values on the 660 Ω range, you can eliminate the resistance of the leads and contact resistance by means of the REL function. • Connect the test leads with the multimeter and join the free ends.
12 • Continuity Test and Diode Test Verify that the device under test is electrically dead. External voltages would falsify the measured results! 12.1 Continuity Test • Set the function selector switch (6) at „Ω“, then press the yellow multi-function pushbutton (5). The multimeter acknowledges turn-ON with an acoustic signal. • At the same time, (18) appears on the LCD and „OL“ is displayed on the main display. • An acoustic signal is generated whenever the reading is less than 30 Ω. 12.
Changing between resistance, continuity, diode testing Repeated brief pressing of the yellow multi-function switch (5) changes the measuring functions in the following order: Resistance → Continuity → Diode → Resistance... Resistance Measurement .
Continuity Test O " " Diode Test Forward direction 22 Reverse direction O 9 9 GMC-I Messtechnik GmbH
13 • • • Capacitance Measurement (METRALINE DM 62 only) Verify that the device under test is electrically dead. External voltages would falsify the measured results! Set the function selector switch (6) at „ “. Connect the (discharged !) device under test to the „ “ and „ “ sockets via test lead. Note • Connect polarized capacitors with the „–“ pole to the „ “ socket. • Resistors and semiconductor junctions in parallel with the capacitor falsify the measured results! Zero adjustment on the 6.
14 Frequency and Duty Measurement (METRALINE DM 62 only) 14.1 Frequency Measurement • Set the function selector switch (6) at „Hz“ • The multimeter switches to frequency measurement. The frequency is displayed on the main display and duty cycle is displayed on the sub-display. See section 16 for the lowest measurable frequencies and the maximum permissible voltages. • Connections are established in the same way as for voltage measurement. 14.
15 Temperature Measurement The METRALINE DM 61 and METRALINE DM 62 multimeters allow the user to measure temperature with a K type thermocouple in the range from –50 °C ... 1300 °C. • Set the function selector switch (6) at „°C“ • Connect the multimeter probe with the two unblocked terminals and the thermocouple output. • The multimeter measures temperature in °C. • To measure temperature in F, press the yellow multi-function pushbutton (5).
16 Technical Characteristics Meas. Measuring DM61 DM62 ResoluFunc- Range (TRMS) tion tion V(DC) V(AC) Input Impedance Digital display inherent deviation at reference condition +(...% rdg. +...digits) 660.0 mV • • 100 μV >100 MΩ // <40pF 0.7 + 5 6.600 V • • 1 mV 11 MΩ //<40pF 0.4 + 5 66.00 V • • 10 mV 10 MΩ // <40pF 0.4 + 5 660.0 V • • 100 mV 10 MΩ // <40pF 0.4 + 5 1000 V • • 1V 10 MΩ // <40pF 0.4 + 5 660.0 mV • • 100 μV >100 MΩ // <40pF 1.2 + 5 6.
Meas. Measuring DM61 DM62 ResoluFunc- Range (TRMS) tion tion 660.0 Ω DIODE 2.000 V F Hz 1) 2) 3) 4) 5) Digital display inherent deviation at reference condition +(...% rdg. +...digits) • • 100 mΩ –3.3 V 0.8 + 5 • • 1 mV 3.3 V 2.0 + 10 6.600 nF — • 1 pF 3.0 + 40 66.00 nF — • 10 pF 2.0 + 10 660.0 nF — • 100 pF 2.0 + 10 6.600 μF — • 1 nF 2.0 + 10 66.00 μF — • 10 nF 660.0 μF — • 100 nF 5.0 + 10 6.600 mF — • 1 μF 5.0 + 10 5.0 + 10 40.00 mF — • 10 μF 66.
Influencing quantities and influence error Influencing Quantity Range of Influence Measured Quantity/ Measuring Range Variation 1) ±(... % of rdg. + ... digits) V DC, V AC Temperature 0 °C ... +21 °C and +25 °C ... +40 °C A DC, A AC Ω 1 x intrinsic uncertainty/K Diode F, Hz, %, °C 20 Hz ... < 50 Hz > 50 Hz ... 200 Hz Measured quantity frequency 20 Hz ... < 50 Hz > 50 Hz ... 2 kHz > 50 Hz ... 200 Hz 20 Hz ... < 2 kHz 1 ... 1.4 Crest factor CF 1.4 ... 5 2) 4) Battery voltage ... < 2.49 V > 2.
Influencing Quantity Range of Influence Noise quantity max. 1000 V Common Mode Interference Voltage Normal Mode Interference Voltage Noise quantity max. 1000 V 50 Hz, 60 Hz sinusoidal Noise quantity: V , value of the measuring range at a time max. 1000 V , 50 Hz, 60 Hz sinusoidal Noise quantity max. 1000 V Measuring Range Attenuation V > 100 dB V > 100 dB V > 100 dB V > 50 dB 660 mV, 6.6 V, 660 V, 1000 V DC > 43 dB 66 V DC > 35 dB V > 45 dB Display Liquid crystal display (58 mm x 31.
Power supply Battery Service life Battery test 2 x AA size alkaline manganese batteries per IEC LR6. for METRALINE DM 61: 600 hrs. for V DC, A DC 300 hrs. for V AC, A AC for METRALINE DM 62: 400 hrs. for V DC, A DC 200 hrs. for V AC, A AC Automatic display of „ “ symbol when battery voltage falls below following value: approx. 2 V.
Response Time (after manual range selection) Measured Quantity/ Measuring Range V ,V , °C A ,A 660 Ω ... 6.6 MΩ 66 MΩ 6.6 nF ... 66 μF 660 μF ... 6.6 mF 66 mF 660 Hz, 6.6 kHz 66 kHz, 660 kHz, 1 MHz % (≥ 10 Hz) Reference conditions Ambient temperature Relative humidity Frequency of measured quantity Waveform of the measured quantity Battery voltage Response Time Analog Digital Display Display 0.1 s 1s 0.1 s 0.1 s 0.2 s 0.1 s 0.7 s 1.4 s 7.0 s 2.0 s 0.5 s 0.7 s 1s 1s 2s 1s max. 1 s max. 3 s max.
Dimensions Weight 17 86 mm x 185 mm x 55 mm 480 g approx., including battery and holster Maintenance Caution Disconnect the multimeter from the measuring circuit before you open it to replace the battery or the fuse! 17.1 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.
! 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 cover with the screw. 17.2 Fuses The 10 A fuse protects the 10 A range, the 1.6 A fuse protects the 66 mA, 660 mA current measuring ranges.
other components. The short-circuiting of the fuse holder is not permissible. 17.3 Case No special maintenance is required for the housing. Keep outside surfaces clean. Use a slightly dampened cloth for cleaning. Avoid the use of cleansers, abrasives or solvents. 17.4 Device Return and Environmentally Compatible Disposal The instrument is a category 9 product (monitoring and control instrument) in accordance with ElektroG (German Electrical and Electronic Device Law).
18 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 19 Repair and Replacement Parts Service Calibration Center* and Rental Instrument Service If required please contact: GMC-I Service GmbH Service Center Beuthener Straße 41 90471 Nürnberg, Germany Phone: +49 911 817718-0 Fax: +49 911 817718-253 E-mail service@gossenmetrawatt.com www.gmci-service.
20 Manufacturer‘s Warranty Digital multimeters of the METRALINE DM series are guaranteed for a period of 3 years after shipment. The manufacturer’s warranty covers materials and workmanship. Damages 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. 21 Registration Register your device at www.gossenmetrawatt.
