MX 350 MX 355 - produktinfo.conrad.com
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1. DC current MX 355 Before measuring currents higher than 40 A set the scale to 400 A by pressing the RANGE button Then reset to zero see 3 2 Open the jaws of the clamp by pressing the trigger and insert the cable to be measured between them Close the clamp and read the result of the measurement on the display Note For safety reasons disconnect the measuring leads before performing this operation If reading is difficult press the HOLD button and read the result afterwards MX 350 MX 355 25 Chapter Il 4 5 Measuring resistance AN Set the switchto Q Connect the red test lead to the input terminal and the black test lead to the COM input terminal Place the touch prods in contact with the points to be measured and read the result on the display Note When performing a measurement on a circuit make sure that it is not live and that the capacitors have been discharged 4 6 Continuity test with buzzer Set the switch to 1 Q Connect the red test lead to the terminal and the black test lead to the COM terminal Place the touch prods in contact with the circuit to be tested If the resistance is lower than 35 Q the buzzer sounds continuously 26 MX 350 MX 355 Chapter Il 4 7 Measurement of the voltage frequency MX 350 ATN Set the switch to Hz Connect the red test lead to the terminal and the black test lead to the COM terminal Place the touch pr2. cut off The clamp shuts down automatically after 30 minutes if no operations are performed To deactivate this function MX 355 only press the Zero button and keep it pressed down Then power up the clamp 4 FUNCTIONAL DESCRIPTION 4 1 Measuring AC voltage SIN Set the switch to V FAS Connect the red test lead to the input terminal and the black test lead to the COM input terminal Then place the touch prods in contact with the points where the AC voltage is to be measured Then read the result on the display 4 2 DC voltage measurement Set the switch to V Connect the red test lead to the input terminal and the black test lead to the COM input terminal Then place the touch prods in contact with the points where the DC voltage is to be measured Then read the result on the display MX 350 MX 355 Chapter Il 4 3 Measuring AC current Set the switch to A Open the clamp by pressing the trigger Place the clamp around the conductor to be measured and release the trigger check that the clamp is closed properly Read the result of the measurement on the display Note For safety reasons disconnect the measuring leads before performing this operation The clamp must be positioned around a single conductor in a circuit with the risk of rendering the measurement incorrect The best measurement is obtained with the conductor centred in the middle of the jaws 4 4 Measuring
3. in accordance with the general conditions of sale During the warranty period 1 year the instrument can only be repaired by the manufacturer who reserves the right to repair the instrument or to exchange all or part of it If the equipment is returned to the manufacturer the outgoing transport costs are borne by the customer The warranty is not applicable in the following cases 1 improper use of the equipment or use of it in con junction with incompatible equipment 2 modifications to the equipment without the explicit authorisation of the manufacturers technical depart ment 3 work carried out on the instrument by a person not approved by the manufacturer 4 adaptation for a specific application not included in the definition of the equipment or the user s manual 5 knocks falls or flooding The contents of this manual must not be reproduced in any form without our consent 1 3 Maintenance Return your instrument to your distributor for any work to be done within or outside the guarantee 1 4 Unpacking Repacking All the equipment was checked mechanically and electronically before shipment Every precaution was taken to ensure that you receive the instrument undamaged It is a good idea to check quickly to detect any damage that may have occurred during transport If there is any damage immediately notify the transporter of the customary reservations Caution If you ship this instrument on elsewhere use
4. MX 350 Pince multim tre AC AC Clamp on meter AC Vielfachmesszange Pinza multimetro AC Pinza multimetrica CA MX 355 Pince multim tre AC DC AC DC Clamp on meter AC DC Vielfachmesszange Pinza multimetro AC DC Pinza multimetrica CA CC Chapitre User s manual Chapter Il page 17 MX 350 MX 355 Chapter Il TABLE OF CONTENTS 1 GENERAL INSTRUCTIONS i 1 1 Precautions and safety measures 18 1 1 1 Before using 1 1 2 When using the instrument 1 1 3 Symbols 1 1 4 1 1 5 Instructions Cleaning 1 2 Warranty 1 3 Maintenance 1 4 Unpacking Repacking 2 DESCRIPTION OF THE INSTRUMENT 21 2 1 Description of front and rear 2 2 Description of the display 3 GENERAL DESCRIPTION 3 1 Preparation for use 1 1 Power supply 1 2 Battery installation and replacement 3 2 Zero mode Delta function 3 3 Memorization automatic range 3 4 AUTO c t Off iinitan S 24 4 FUNCTIONAL DESCRIPTION 4 1 Measuring AC voltage 4 2 DC voltage measurement 4 3 Measuring AC current 4 4 Measuring DC current 4 5 Measuring resistance 4 6 Continuity test with buzzer 4 7 Measurement of the voltage frequency 4 8 Measurement of the current frequency ww 5 1 52 5 2 1 DC voltage Autorange 5 2 2 AC voltage Autorange 5 2 3 DC current Autorange 5 2 4 AC current Autorange 5 2 5 Resistance Q 5 2 6 Hz frequen
5. ainst overloads 600 Arms MX 355 Frequency 0 05A to 39 99A 50 500 Hz Protection against overloads 600 Arms 28 MX 350 MX 355 Chapter Il 5 2 5 Resistance Q 0 2 Q to 399 9 Q 1 R 2 D Max voltage 1 5 V DC during measurement Protection against overloads 600 Vrms Continuity detection threshold R lt 40 Q 5 2 6 Hz frequency Autorange of a current MX 350 4000 Hz 20 Hz to 3999 Hz 0 1 R 1D 4 00 kHz to 10 00 kHz Protection against overloads 600 Arms 5 2 7 Hz frequency Autorange of a voltage MX 350 Sensitivity 4000Hz_ 2Hz to 3999Hz 00kHz to 39 99kHz 10 Hz 0 1 R 1 D 0 0kHz to 399 9kHz 100 Hz 0 1 R 1 D OOkHz to 999kHz kHz 0 1 R 1 D Input impedance 1 MQ Protection against overloads 600 Vrms 5 2 8 Safety IEC 61010 1 Ed 95 and IEC 61010 2 032 Ed 93 nsulation class Il Pollution level 2 Altitude gt 2000 m Installation category CAT II 600V CAT III 300V 5 2 9 General information Digital display 3 digit LCD with max reading of 3 999 counts Analogue display 42 segment bargraph Polarity When a negative signal is applied the mmm signal appears Overload If the range is exceeded the aL symbol is displayed Low battery indicator is displayed when the voltage supplied by the batteries is lower than the operating voltage MX 350 MX 355 29 Chapter Il Sampling 2 measurements second for the digital display 20 measurements second for the bargraph P
6. cy Autorange of a current 29 5 2 7 Hz frequency Autorange of a voltage 29 5 2 8 Safety 5 2 9 General information 5 3 Environmental conditions 5 8 1 Temperature 5 8 2 E M C 5 4 Accessories MX 350 MX 355 17 Chapter Il 1 GENERAL INSTRUCTIONS 1 1 Precautions and safety measures 1 1 1 Before using You have just acquired a 4 000 count multimeter clamp We thank you for your confidence This multimeter clamp complies with the IEC 61010 norms concerning electronic measuring instruments For your own safety and to prevent damage to the instrument you must follow the instructions given in this manual This instrument can be used for measurements on circuits in installation category Il in an environment with pollution level 2 for voltages no greater than 300 V in relation to the earth Definition of the installation categories see IEC 61010 1 publication CAT CAT circuits are circuits protected by low level transient over voltage limiters Example protected electronic circuits CAT Il CAT Il circuits are household or similar appliance power circuits which may carry medium level transient over voltage Example household appliance and portable tool power supplies CAT Ill CAT Ill circuits are high power appliance power circuits which may carry high level transient over voltage Example industrial machinery or instrument power supplies CAT IV CAT IV circuits are circuit
7. emove the clamp from the circuit measured 3 Loosen the screws and open the flap of the battery compartment using a screwdriver 4 Replace the flat batteries with 2 new 1 5 V LRO3 batteries 5 Put the battery flap back in place and tighten the fixing screws d a 3 2 Zero mode Delta function MX 355 Press the zero button to select the zero mode The A symbol is displayed The last value measured becomes the reference value which will be subtracted from any subsequent measurements Press the button again the A symbol flashes and the display indicates the reference value subtracted from the measurements To quit the Zero mode press the zero button for 2 seconas In zero mode the auto range function is deactivated This function can also be used to perform RCD measurements in A V or Q by recording a calibration value subtracted from the measurements 3 3 Memorization automatic range It is possible to freeze the value displayed by pressing on the HOLD button To deactivate this function press the HOLD button a second time MX 350 MX 355 23 Chapter Il MX 355 In A and V it is possible to change the range by keeping the RANGE button pressed The manual range symbol appears The user can choose the position of the decimal point To quit the manual range you must keep the RANGE button pressed for at least 2 seconds the clamp then returns to AUTO mode Autorange 3 4 Auto
8. ods in contact with the points whose frequency is to be measured Read the result on the display 4 8 Measurement of the current frequency MX 350 Set the switch to Hz Open the clamp by pressing the trigger and insert the cable to be measured Close the clamp and read the result on the display Note For frequency measurements you can use either the input terminals voltage or the jaws of the clamp current If you use both sources the result of the measurement is false MX 350 MX 355 27 Chapter Il 5 TECHNICAL SPECIFICATIONS 5 1 General Only the values assigned tolerances or the limits declared constitute guaranteed values The values without any tolerance are given as indications 5 2 Characteristics The accuracy is of the reading R number of representation units digits or D in the reference conditions see appendix 5 2 1 DC voltage Autorange 400 V o2Vto3999V 01V 1 R 2D 600 V 400 V to 600 V iv 1 R 2D Protection against overloads 660 Vrms 5 2 2 AC voltage Autorange MX 350 Input impedance 1 MQ MX 355 Input impedance 10 MQ Protection against overloads 660 Vrms 5 2 3 DC current Autorange MX 355 0 10 to 39 99 A 2 5 R 10 D 0 400 A 40 0 Ato 400 0 A 2 5 R 10 D Protection against overloads 600 Arms 5 2 4 AC current Autorange MX 350 25450 6 500 Hz R 5 D ar NA pean sso 6 00 Hz 2 5 R 5D Protection ag
9. preferably the original packaging and indicate the reasons for reshipment as clearly as possible in a note enclosed with the equipment Our products are patented in FRANCE and ABROAD Our logos are registered trade marks We reserve the right to modify the characteristics and prices should technological advances make it necessary 20 MX 350 MX 355 Chapter Il 2 DESCRIPTION OF THE INSTRUMENT 2 1 Description of front and rear ROGE EN maint F Saret Jaws Protective guard Trigger Switch Display COM input am terminals ss input terminals j n a HOLD function on o Ob Zero button O Battery compartment 6606060 Q MX 350 MX 355 21 Chapter Il 2 2 Description of the display E AUTO A El MKHz 1 s0 0 0 04 OS Batteries flat Automatic range Manual range Continuity measurement Voltage measurement Current measurement Resistance measurement Direct current Negative value Bargraph Frequency measurement DC zero delta function 22 MX 350 MX 355 Chapter Il 3 GENERAL DESCRIPTION 3 1 Preparation for use 3 1 1 Power supply Battery AAA or LRO3 1 5 V x2 Charge life 100 hours with alkaline batteries 3 1 2 Battery installation and replacement T is displayed when the voltage supplied by the batteries is lower than the operating voltage 2 Before changing the batteries set the switch to OFF disconnect the measuring leads and r
10. rotection level of the housing IP30 according to EN 60529 Ed 92 Maximum jaw opening MX 350 Y 26 mm MX 355 30 mm Dimensions L x W x H 193 x 50 x 28 mm Weight 230 g with batteries 5 3 Environmental conditions 5 3 1 Temperature Operation 0 to 40 C lt 70 Yo RH Storage 10 C to 60 C lt 80 RH 5 3 2 E M C Immunity acc to EN 61326 A1 1998 Emission acc to EN 61326 A1 1998 5 4 Accessories Instrument delivered with 1 user s manual 1 set of measuring leads one black and one red 2 x 1 5V AAA or LR3 batteries 1 carrying bag APPENDIX Reference conditions Sine signal Frequency from 48 to 65 Hz No DC component Temperature 23 C 5 External magnetic field lt 40 A m No AC magnetic field Measured conductor centred in A 30 MX 350 MX 355 METRIX P le Test et Mesure CHAUVIN ARNOUX 190 rue championnet F 75876 PARIX Cedex 18 Tel 33 0 1 44 85 44 85 Fax 33 0 1 46 27 73 89 Copyright mueli 906129581 Ed 03 01 05
11. s which can carry very substantial transient over voltage Example power feeders For your own safety only used leads that comply with the IEC 61010 norm Before using them always check that they are in perfect working order 18 MX 350 MX 355 Chapter Il 1 1 2 When using the instrument Never exceed the protection limit values indicated in the specifications for each type of measure ment When the multimeter clamp is linked to the measurement circuits do not touch any unused terminals Before changing the function disconnect the measurement leads from the circuit measured Never measure resistances on a live circuit 1 1 3 Symbols A Refer to the user s manual A Risk of electric shock m Dual insulation 1 1 4 Instructions Before opening the instrument disconnect it from the measuring circuits and make sure that you are not charged with static electricity which could irreparably damage the instrument s internal elements A qualified person is someone who is familiar with the installation the construction the application and the dangers at hand This person is authorised to power up and power down the installation and equipment in compliance with safety regulations 1 1 5 Cleaning Clean the instrument with a damp cloth and soap Never use abrasive products or solvents MX 350 MX 355 19 Chapter Il 1 2 Warranty This equipment is guaranteed against any material or manufacturing defects
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