METRAmax 2 - Electrocomponents
Contents
1. Set the sliding function switch 2 to the xx position Set the rotary range selector switch 3 to the following position V 100 V Connect the METRAmax 2 Read the measured value back scale Operating mode Electrical zero at mid scale Set the sliding function switch 2 to the b position Set the rotary range selector switch 3 to the following position V 100 mV Check that the pointer rests at mid scale see section 3 2 3 on page 7 Connect the METRAmax 2 Read the measured value red scale 3 4 3 AC current measurement Parar Set the sliding function switch 2 to the xx position Set the rotary range selector switch 3 to the corresponding measuring range A 3 A 100 pA Connect the METRAmax 2 Read the measured value black scale 3 5 End of measurement When no measurements are made the sliding function switch 2 should always be set to 0 to conserve the battery life GOSSEN METRAWATT 11 4 Specifications Measuring ranges DC and AC Internal resistance DC and AC Voltage voltage voltage drop 100 mV 10 MQ 100 uA 55 mV 300 mV 10 MQ 1mA 55 mV 1 V 10 MQ 10 mA 55 mV 100 mA 55 mV 3V 10MQ 1MQ 1 AI 53 mV 10 V 10MQ 1MQ 3 AI 51 mV 30 V 10MQ 1MQ 100 V 10MQ 1MQ 300 V 10MQ 1MQ Infuence quantities and nominal ranges of use Temperature2. 50 Hz The measuring procedure corresponds to the one described above The DC component can be determined same as with DC voltage measurement To protect the meter against overload the selected measuring range must always be higher than the DC voltage component de termined at first Caution AN Both voltage components must be tested before switch ing to a lower measuring range GOSSEN METRAWATT 9 3 4 Current measurement For all current measurements connect the METRAmax 2 in series with the consumer in the line having the lower potential to ground 3 4 1 Direct DC current measurement Operating mode Electrical zero at left DARRA Set the sliding function switch 2 to the xx position Set the rotary range selector switch 3 to the corresponding measuring range A 3A 100 pA Connect the METRAmax 2 Read the measured value black scale Operating mode Electrical zero at mid scale Set the sliding function switch 2 to the 4 position Set the rotary range selector switch 3 to the corresponding measuring range A 3A 100 pA Check that the pointer rests at mid scale see section 3 2 3 on page 7 Connect the METRAmax 2 according to the wiring diagram Read the measured value red scale 3 4 2 DC current measurement via shunts The accuracy of the measurement is influenced by the measuring error of the shunt Operating mode Electrical zero at left FTTT TI 10 GOSSEN METRAWATT
3. however if the meter is mis used or carelessly handled That is why it is absolutely necessary to carefully and completely read these operating instructions before using the METRAmax 2 and to follow them in all respects Please note the following safety precautions The meter must only be operated by persones who understand the dan ger of shock hazards and know how to apply safety precautions Shock hazards exist wherever voltages of more than 30 V RMS value to ground can appear It must be taken into account that unexpected voltages can appear on devices under test e g defective devices Capacitors may be charged dangerously for instance Case and test leads must be in good condition e g no cracks or broken spots The METRAmax 2 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 e Measurements under moist environmental conditions are not permit ted Hands shoes floor and working site must be dry Absolutely verify that overloading of the measuring ranges does not exceed the permissible limits 4 GOSSEN METRAWATT 2 Description On the METRAmax 2 the measuring ranges are selected with a sliding function switch and a rotary range selector switch The scale is mirror backed The rugged plastic case and the spring loaded jewel bearings of the stray field insensitive moving coil
4. OSSEN METRAWATT Caution Both test leads must be disconnected from the measur ing circuit before opening the meter gt Note Automatic battery switch off after 45 min Switching off and on again of the sliding function switch activates the power supply 3 2 2 Checking the mechanical zero The METRAmax 2 must not be connected when checking the me chanical zero Set the sliding function switch 2 to the 0 position Place the METRAmax 2 in a horizontal position The pointer must be located exactly above the line marked A OFF Correct the deviation by means of the adjustment screw 1 on the bottom of the case using a screwdriver if required 3 2 3 Checking the electrical zero Set the sliding function switch 2 to the 4 position select the measuring range The pointer must rest exactly above the line for the zero at mid scale Correct deviations by means of the rotary knob 4 if required 3 2 4 Battery test Set the sliding function switch 2 to the xx position Set the rotary range selector switch 3 to the onl ae position lee must travel into the battery test section marked 4p If the pointer no longer travels into the battery test section or if there is an instable indication the battery is exhausted It must be replaced with a new one see section 5 Maintenance battery re placement GOSSEN METRAWATT 7 3 3 Voltage measurement 3 3 1 DC voltage measurement Operating mode Electri
5. Operating instructions Pe N METRAmax 2 aes Analog multimeter 3 3 97 GOSSEN METRAWATT Contents Page 1 Safety features and safety precautions sese 4 2 DOSER PEON ees cern srarn anew une nanan 5 3 Operations paniatan ap aaa ia 3 1 Operating controls sss 3 2 Getting started e 3 2 1 Connecting the battery 3 2 2 Checking the mechanical zero serere 7 3 2 3 Checking the electrical zero neern 7 3 2 4 Battery test 3 3 Voltage measurement sssri 8 3 3 1 DC voltage measurement s es 8 3 3 2 Direct AC voltage measurement up to 300 V ses 8 3 3 3 AC voltage measurement with superimposed DC voltage component sssssssssrriressssssuurrnnnrnennsnnnnnnnnnrrnenenanns 3 4 Current measurement s s 3 4 1 Direct DC current measurement 3 4 2 DC current measurement via shunts 3 4 3 AC current measurement oo a 3 5 End of Measurement pranaciiiun aonana A Specifications oo cecseecesteeseeeeseeeeteeeeeeeneneenees 12 5 MAINTENANCE sessesessssesesesssesesesssssstsesecssssersesesatens 14 5 1 Battery repl cemEnt imuninio 14 5 2 Fuse replacement 5 3 ClOANING HERE SEERE eid is 6 Repair and replacement parts service sse 15 GOSSEN METRAWATT 3 1 Safety features and safety precautions The analog multimeter METRAmax 2 is constructed in compliance with the safety rules of IEC 1010 1 EN 61010 1 VDE 0411 1 When properly used the safety of both the user and the meter is assured Their safety is not assured
6. acement Remove the case as described in section 3 2 1 on page 6 The fuse holders are soldered to the circuit board 5 3 Cleaning The meter must only be cleaned with a soft cloth or brush Eventu ally existing static charges of the window can be eliminated by means of an antistatic agent or a moist cloth 14 GOSSEN METRAWATT 6 Repair and replacement parts service When you need service please contact GOSSEN METRAWATT GMBH Service Thomas Mann StraBe 16 20 D 90471 Nurnberg Telefon 09 11 86 02 4 10 411 Telefax 09 11 86 02 2 53 This address if for Germany only Abroad our representatives or establishments are at your disposal GOSSEN METRAWATT 15 Printed in Slovenia Subject to change without notice GOSSEN METRAWATT GMBH D 90327 Nurnberg Company address S Thomas Mann Stra e 16 20 CY D 90471 Nurnberg gt Sy Telefon 09 11 86 02 0 PES Telefax 09 11 86 02 6 69 SS rd
7. cal zero at left i RAeag Set the sliding function switch 2 to the xx position Set the rotary range selector switch 3 to the corresponding measuring range V 300 V 100 mV Connect the METRAmax 2 Read the measured value black scale Operating mode Electrical zero at mid scale Set the sliding function switch 2 to the A gt position Set the rotary range selector switch 3 to the corresponding measuring range V 300 V 100 mV Check that the pointer rests at mid scale see section 3 2 3 on page 7 Connect the METRAmax 2 Read the measured value red scale 3 3 2 Direct AC voltage measurement up to 300 V TESNA Set the sliding function switch 2 to the xx position Set the rotary range selector switch 3 to the corresponding measuring range V 300 V 3 V 8 GOSSEN METRAWATT Connect the METRAmax 2 Read the measured value black scale To keep the influence of the frequency as low as possible the con nection socket should be connected to the ground potential as directly as possible or to lowest point with respect to ground 3 3 3 AC voltage measurement with superimposed DC voltage component 2 The DC voltage component such as occurs with an amplifier out put stage for example can be cut off by means of a capacitor rec ommended value 4 7 uF 630 V In this case the additional service error is smaller than 0 2 at a measuring frequency of
8. movement with core magnet protect the meter against damages in the case of severe mechan ical stress The electrical zero of the pointer can be positioned at mid scale This allows for bipolar DC voltage and DC current measurements regardless of the polarity The connection sockets are protected against accidental contact Both the special test leads with contact protected connection plugs and all test leads with commercial banana plugs 4 mm diam eter can be used The DC current measuring ranges can be expanded by means of a shunt e g 10 A 100 mV The meter is of service friendly design GOSSEN METRAWATT 3 Operation 3 1 Operating controls 1 Adjustment screw for the mechanical zero a OFF on scale 2 Sliding function switch 3 Rotary range selector switch 4 Rotary knob for mid scale setting of the electrical zero 5 Safety connection sockets 6 Nose to open the meter 7 Battery compartment 3 2 Getting started 3 2 1 Connecting the battery The battery compartment 7 contains a 9 V battery IEC 6F22 which is not connected To connect the battery it is required to re move the lower part of the case For this purpose press the nose 6 on the front of the meter inwards using an adequate tool Se curely connect the battery contacts to the battery clip located in the battery compartment Ensure reliable contact making Replace the lower part of the case and press the two parts together until they engage 6 G
9. on the range 0 40 C Frequency for all measuring ranges Accuracy Under reference conditions Reference conditions Ambient temperature Position of use Frequency Waveform 12 2 10 K on 2 5 on the 30 Hz 1 5 kHz range 5 on the 1 5 kHz 3 kHz range Class 2 for Class 3 for 423 C 2 K Horizontal 50 60 Hz Sinusoidal GOSSEN METRAWATT Power supply Battery Overload protection Electrical safety Protection class Overvoltage category Nominal voltage Pollution degree Test voltage EMC Emission Immunity Mecanical configuration Dimensions Weight GOSSEN METRAWATT 9 V flat cell battery IEC 6F22 automatic battery switch off after 45 min Fuse F3 15 H 250 V acc to DIN VDE 0820 part 22 EN 60127 2 protects the circuits against over load The movement is protected by 2 diodes in inverse parallel connec tion ll acc to IEC 1010 1 EN 61010 1 VDE 0411 1 CAT Ill 300 V 2 3 7 kV Electromagnetic compatibility EN 50081 1 1992 EN 50082 1 1992 100 mm x 140 mm x 35 mm approx 300 g with battery 13 5 Maintenance 5 1 Battery replacement When a battery test reveals that the pointer no longer travels into the battery test section marked the battery must be re placed Replace the exhausted battery with a new 9 V flat cell bat tery according to IEC 6F 22 Remove the lower part of the case as described in section 3 2 1 on page 6 5 2 Fuse repl
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