User Manuals
Contents
1. WARNING Do not realise measurements in environments in which there are inflammable gases Otherwise operation of the meter under such conditions may cause sparking and explosion ATTENTION Input Limits Function Maximum Input A AC 400A V DC V AC 600V DC AC Frequency Resistance Diode 250V DC AC Continuity Temperature C F 250V DC AC 2 1 International Safety Symbols This symbol adjacent to another symbol or terminal indi cates the user must refer to the manual for further infor mation A This symbol adjacent to a terminal indicates that under normal use hazardous voltages may be present Double insulation 3 Preparation of the meter for operation Having purchased the meter examine completeness of the con tents of the package Before measurements commence it is necessary to realise the following actions e sure the conditions of the batteries or accumulators mit to realise measurements e Make sure the casing of the meter and the insulation of the test leads are not damaged WARNING Connection of inappropriate or damaged test leads consti tutes a risk of an electric shock with a dangerous voltage 4 Functional description 4 1 Measurement sockets and elements of selection of the measurement function AN 4 Ee 0 6 b 9 I if SI H 92. WARNING Do not commence current measurements if the test leads are connected to the meter In order to realise a measurement of alternative current it is necessary to realise the following actions Set the Function switch to the 40 or 400A or 40A or 400A if the range of the measured is not known select the highest range first press the REL button to zero the meter in DC mode open the clamp and place it on a single cable read the result of the measurement on the display move to the lower range if necessary Attention During measurements of the current make sure the clamp is properly placed Otherwise the results of the measurements will not be exact The most exact result we will get if the wire is placed in the middle of clamp 5 2 and DC voltage measurements In order to realise a measurement of AC or DC voltage it is necessary to realise the following actions set the function switch to the Vz position e select AC or DC with the MODE button with the RANGE button set the measurement range manually if necessary 13 connect red test lead to socket and the black one to socket COM place the edges of the probes to the measurement points while measuring DC voltage place the red probe to the point of higher potential read the result of the measurement on the display e having done the measurement disconnect the test leads from the meter
3. 5 3 Resistance measurements WARNING Measurements must not be realised in live circuits Capaci tors must be discharged WARNING Do not realise measurements if the battery compartment is open In order to realise a measurement of the resistance it is neces sary to realise the following actions place the rotational selector the position 3 ej CAP e connect the red test lead to sockets and the black one to sockets COM e make sure symbol 0 is displayed with open test leads and in the case of shorted terminals of the measurement probes the display shows 0 e with the RANGE button set the measurement range manually if necessary e touch the test probe tips across the circuit or component under test it is best to disconnect one side of the device under test So the rest of the circuit will not interfere with the resistance reading read the result of the measurement on the display 14 having done the measurement disconnect the test leads from the meter 5 4 Continuity Measurements WARNING Measurements must not be realised in live circuits Capaci tors must be discharged WARNING Do not realise measurements if the battery compartment is open In order to realise continuity test it is necessary to realise the following actions place the rotational selector in the position Q gt ej CAP connect the red test lead to socket
4. 8 NE MI 10 voca AT aa d 42 13 Illustration 1 CMP 401 4 1 1 11 12 4 1 2 1 2 3 4 Sockets measurement socket V O CAP TEMP Measurement socket for the purpose of measurements of di rect and alternative voltages resistance capacity frequency and temperature measurement socket COM Measurement socket common for all the measurement func tions except of current measurements connection to the mass of the device Elements of selection of the measurement function current clamp non contact AC voltage indicator light clamp trigger rotational selector Selection of function 10 OFF meter off e Vs 4irect and alternative voltage measurement QJ9F CAP resistance capacitance and continuity measurement and diode testing C F Fahrenheit and Celsius temperature measure ment 40A direct current measurement up to 40A 400A direct current measurement up to 400A 40A alternative current measurement up to 40A 400A alternative current measurement up to 400A HOLD button Data Hold function Back Light function REL button Relative measurement function Exit of relative measurement function DCA zero 7 LCD display MODE button Changing of measurement mode 9 RANGE button Manual range selection 10 2 button Frequency duty cycle selec
5. e frequency range 50 400Hz 23 DC voltage measurement R Range Resolution Basic uncertainty 400 0mV 0 1mV t 0 8 2 digits 4 000V 0 001V 40 00V 0 01V 1 596 m v 2 digits 400 0V 0 1V 600V 1V 2 m v 2 digits esistance measurement Range Resolution Basic uncertainty 400 00 0 19 t 196 m v 4 digits 4 000kQ 0 001kQ 40 00kQ 0 01kQ 1 5 96 m v 2 digits 400 0kQ 0 1kQ 4 000 0 001MQ 2 5 m v 3 digits 40 00MQ 0 01MQ 3 5 96 m v 5 digits Frequency measurement 10kHz Duty Cycle Range amp Res S Olution Basic Accuracy 10 0 94 9 unspecificated 24 Range Basic uncertainty 10Hz 10kHz 1 5 m v 2 digits sensitivity 100V 50Hz 50V 50 400Hz 15V 401Hz Pulse width 100us 100ms Frequency 30Hz 15kHz Sensitivity 30 5kHz 10Vrms min 5kHz 15kHz 40Vrms min Capacitance measurement Range Resolution Basic uncertainty 40 00nF 0 01nF 4 m v 20 digits 400 0nF 0 1nF 4 000uF 0 001uF 3 m v 5 digits 40 00uF 0 01uF 100 0 0 1pF 4 m v 10 digits Temperature measurement Range Basic uncertainty 20 0 760 0 C 3 m v 5 C 4 0 1400 F t 396 m v 9 F probe K type accuracy not included Other technical data 5
6. Do not realise measurements if the battery compartment is open In order to realise capacitance test it is necessary to realise the following actions place the rotational selector in the position Q gt ej CAP connect the red test lead to sockets and the black one to sockets COM e the MODE button until F appears on the display 16 e touch the test leads to the capacitor to be tested read the capacitance value in the display having done the measurement disconnect the test leads from the meter 5 7 Frequency or duly cycle measure ments WARNING Do not realise measurements if the battery compartment is open In order to realise frequency or duty cycle measurement it is necessary to realise the following actions e place rotational selector in the position Vz connect the red test lead to sockets and the black one to sockets COM select Hz or duty with the Hz button touch the test probe tips to the circuit under test read the frequency on the display having done the measurement disconnect the test leads from the meter 5 8 Temperature measurements WARNING Do not realise measurements if the battery compartment is open WARNING To avoid electric shock disconnect both test probes from any source of voltage before making a temperature meas urement 17 WARNING To avoid electric shock
7. To freeze the LCD meter reading press the HOLD button The data hold button is located on the left side of the meter top button While data hold is active the HOLD display icon appears on the LCD Press the data hold button again to return to normal operation Press and hold the HOLD button key for more than 2 seconds to turn on the backlight This will also activate the Data Hold function To release the Data Hold function and return the tester to normal operation press the HOLD button momentarily To turn off the backlight press and hold the HOLD button for more than 2 seconds 6 4 MODE button The MODE button is used for DC ACV or OHM Diode Conti nuity Capacitance or C F selection 7 Before you send the meter to be ser viced Before sending the instrument to be repaired call the workshop since it is possible the meter is not damaged and the problem has occurred for some other reason Elimination of damage to the meter must be realised solely in workshops authorised by the manufacturer 20 The following table presents recommendations regarding pro ceeding in certain situations which may occur during operation of the meter SOLUTION The meter does not Low batteries Replace the batter turn on ies If the situation Unintelligible and does not change randomly displayed send the meter for segments of the repair LCD display Erroneous meas Lack of acclimati urement after mov sation Do not perfo
8. be sure the thermocouple has been removed before changing to another measurement function In order to realise temperature measurement it is necessary to realise the following actions place the rotational selector in the position C F e the MODE button to select C or F insert the temperature probe into the negative COM and the V Q TEMP terminals making sure to observe the correct po larity e touch the temperature probe head to the part whose tempera ture you wish to measure keep the probe touching the part under test until the reading stabilizes about 30 seconds e read the temperature in the display the digital reading will in dicate the proper decimal point and value having done the measurement disconnect the test leads from the meter 5 9 Non Contact AC Voltage Measurements WARNING Risk of Electrocution Before use always test the voltage de tector on a known live circuit to verify proper operation In order to realise the test it is necessary to realise the following actions e touch the current clamp to the live conductor or insert into the live side of the electrical outlet if AC voltage is present the detector light will illuminate 18 Note The conductors in electrical cord sets are often twisted For best results rub the probe tip along a length of the cord to assure placing the tip in close proximity to the live conduc tor Note
9. the fol lowing components The CMP 401 meter Test leads 2 pieces 9V battery K Type temperature probe Carrying case Operating manual Guarantee card 26 12 3 Manufacturer The manufacturer of the device which also provides guarantee and post guarantee service is the following company SONEL S A ul Wokulskiego 11 58 100 Swidnica Tel 48 74 858 38 60 Fax 48 74 858 38 09 E mail export 2sonel pl Web page www sonel pl Note Service repairs must be realised solely by the manufactur er Made in China for SONEL S A 27
10. 3 Measurement category in acc with EN 61010 1 600V Ingress protection in acc with EN 60529 IP40 Pollution eene nennen 2 Power supply a one 9V battery Clamp size eet ee certet Opening 30mm 1 2 approx Diode tesl 1 0 1 5 Continuity test 1 0 5mA sound signal for lt 500 Overrange OL displayed Measurements 2 per second nominal Input impedance nennen 10MQ V AC DC Display LCD 4000 counts Dimensions 197 x 70 x 40 mm 1839 Operating temperature 5 to 40 C 41 to 1049 Storage temperature 20 to 60 C 4 to 140 F Operating humidity max 80 up to 31 C 87 F decreasing Use eie aite teet dte a Peg ade linearly to 50 at 40 104 Storage 1 lt 80 Max operating altitude 2000meters 7000ft Auto OF E eere ERU approx 30 minutes 25 t Compliance with the requirements specified in the following 61010 1 EN 61010 2 032 ISO 9001 12 2 Standard equipment The standard set provided by the manufacturer includes
11. EASUREMENIS 51 AC AND DC CURRENT MEASUREMENTS eere 5 2 AC AND DC VOLTAGE MEASUREMENTS 5 3 RESISTANCE MEASUREMENTS eene 54 CONTINUITY MEASUREMENTS ener 5 5 DIODE MEASUREMENTS eere 5 6 CAPACITANCE MEASUREMENTS eene 5 7 FREQUENCY OR DUTY CYCLE MEASUREMENTS 5 8 TEMPERATURE MEASUREMENTS 59 NON CONTACT AC VOLTAGE MEASUREMENTS 6 SPECIAL FUNCTION S 6 1 MANUAL RANGE SELECTION 6 2 RELATIVE MODE A rne Re ae HORE 63 DATA HOLD FUNCTION AND BACKLIGHT DISPLAY 6 4 MODE BUTTON eiecti edd 7 BEFORE YOU SEND THE METER TO BE SERVICED e eerie e eo rase 20 8 REPLACEMENT OF THE BATTERIES 21 9 CLEANING AND MAINTENANCE 22 10 STORAGE 22 11 DISMANTLING AND UTILIZATION 22 12 ATTACHMENIS 12 1 TECHNICAL DATA 12 2 STANDARD EQUIPMENT 12 3 MANUFACTURER AS 1 Introduction We appreciate your having purchased our digital clamp meter The CMP 401 meter is a modern high quality measuring device which is easy and safe to use Please acquaint yourself with the present manual in order to avoid measuring errors and prevent possible problems related to operation of the met
12. Ss OPERATING MANUAL AC DC CLAMP METER CMP 401 Version 1 6 The CMP 401 digital clamp meter has been designed for the purpose of clamp measurements of alternative and direct current Furthermore the meter may be used to measure direct and al ternative voltages resistance frequency temperature and to test diodes Main features of the CMP 401 device are the following automatic or manual regulation of the measurement range DATA HOLD function which facilitates readings of measure ments in the case of insufficient lighting or in inaccessible plac es REL function which allows you to make measurements relative to a stored reference value the function of automatic switching of the meter into the standby mode in order to prolong the durability of batteries circuit continuity sound signalling Beeper 3 34 digits display safe protected clamp jaws double molded housing 1 INTRODUCTION 5 2 SAFETY pe 6 2 1 INTERNATIONAL SAFETY SYMBOLS 8 3 PREPARATION OF THE METER FOR OPERATION issssssssscessssssscsconsssesccasssetsedasenss ossssctsooses 8 4 FUNCTIONAL DESCRIPTION 9 41 MEASUREMENT SOCKETS AND ELEMENTS OF SELECTION OF THE MEASUREMENT FUNCTION eere 9 E eT 10 4 1 2 Elements of selection of the measurement function 42 LCD DISPDAY eret ORE eH 4 3 TEST LEADS 5 M
13. The detector is designed with high sensitivity Static electric ity or other sources of energy may randomly trip the sensor This is normal operation 6 Special functions 6 1 Manual range selection When the meter is first turned on it automatically goes into Au toRanging This automatically selects the best range for the meas urements being made and is generally the best mode for most measurements For measurement situations requiring that a range be manually selected perform the following press the RANGE button the Auto Range display indicator will turn off press the RANGE button to step through the available ranges until you select the range you want e press and hold the RANGE button for 2 seconds to exit the ManualRanging mode and return to AutoRanging 6 2 Relative mode Press REL button to enter the relative mode the REL indicator turns on zero the display and stores the displayed reading as a reference value 19 In the relative mode the value shown on the LCD is always difference between the stored reference value and the present reading For example if the reference value is 24 00V and the pre sent reading is 12 50V the display will indicate 11 50V If the new reading is the same as the reference value the display will be zero This feature also is made as DCA ZERO adjustment Press the REL button again to exit the relative mode 6 3 DATA HOLD Function and Backlight display
14. er In the present manual we apply three kinds of warnings These are texts in frames which describe possible dangers both for the user and the meter itself The messages starting from the word WARNING describe situations which imply a risk for life or health should the recommendations presented in the present manual not be observed The word ATTENTION introduces a description of a situation where non observance of the recommendations presented in the present manual may imply damage for the meter Indications of possible problems are preceded by the word Attention WARNING Before using the instrument acquaint yourself with the pre sent manual and observe the safety regulations and recom mendations specified by the manufacturer WARNING The purpose of the CMP 401 meter is to realise measure ments of the current directs and alternative voltages re sistance frequency temperature and diode testing Using the meter in a manner which does not comply with the rec ommendations specified in the present manual may lead to its damage and constitutes a source of a serious risk for the user WARNING The CMP 401 meter may be operated solely by qualified and properly authorised personnel for work at electric installa tions Using the meter by unauthorised personnel may lead to its damage and constitutes a source of a serious risk for the user 2 Safety o 9 In order to guarantee proper operat
15. ion and correctness of the btained results it is necessary to observe the following recommen ations Before commencing operation of the meter please acquaint yourself thoroughly with the present manual The instrument should be operated solely by properly qualified personnel who also must be trained regarding the industrial safety regulations Use great care when making measurements if the voltages are greater than 25V AC rms or 35V DC These voltages are consi dered a shock hazard Before use for non contact AC voltage measurements always test the voltage detector on a known live circuit to verify proper operation Set function switch to the appropriate position before measur Ing When measuring volts do not switch to current resistance modes Do not exceed the maximum allowable input range of any func tion Do not apply voltage to meter when resistance function is se lected When changing ranges using the selector switch always dis connect the test leads from the circuit under test Do not exceed the maximum rated input limits It is prohibited to operated the meter damaged and completely or partially out of order Ifthe insulation of the test leads has been damaged lf it has been stored for an excessive period of time in inad equate conditions e g if it is humid Repairs must be realised solely by an authorised service work shop WARNING Do not realise measurements with wet hands
16. llowing recommenda tions must be observed e Disconnect all the test leads from the meter sure the meter and its accessories dry In case the meter is to be stored for a prolonged period of time the battery must be removed from the device 11 Dismantling and utilization Worn out electric and electronic equipment should be gathered selectively i e it must not be placed with waste of another kind 22 Worn out electronic equipment should be sent to a collection point in accordance with the law of worn out electric and electronic equipment Before the equipment is sent to a collection point do not dis mantle any elements Observe the local regulations concerning disposal of packages worn out batteries and accumulators 12 Attachments 12 1 Technical data e means measured value of standard AC current measurement Range Resolution Basic uncertainty 40 00A 0 01A t 2 596 m v 8 digits 400 0A 0 1A 2 8 m v 5 digits frequency range 50 60Hz DC current measurement Range Resolution Basic uncertainty 40 00A 0 01A t 2 596 m v 4 5 digits 400 0A 0 1A 2 896 m v 5 digits AC voltage measurement Range Resolution Basic uncertainty 400 0mV 0 1mV 1 596 m v 30 digits 4 000V 0 001V 40 00V 0 01V 1 596 m v 5 digits 400 0V 0 1V 600V 1V 296 m v 5 digits
17. rm measurements until the meter has reached the tem perature of the en vironment approx imately 30 minutes The test lead is The test lead is Replace the test damaged broken or torn off lead the terminal 8 Replacement of the batteries The CMP 400 meter is supplied by means of one 9V battery It is recommended to use alkaline battery ing the meter from a cold environment to a warm place of high humidity Attention When making measurements with a battery s mnemonic on one must take into account additional indefinite measure ment uncertainty or unstable working of the meter 21 WARNING Should the test leads be left in the sockets during replace ment of the battery there might be a risk of electric shock with a dangerous voltage In order to replace the battery it is necessary to do the following remove all the test leads from the measurement sockets and place rotational selector in the position OFF remove the one rear Phillips head screw open the battery compartment replace the required one 9V battery re assemble the meter 9 Cleaning and maintenance The casing of the meter may be cleaned with a soft damp cloth using all purpose detergents Do not use any solvents or cleaning agents which might scratch the casing powders pastes etc The electronic system of the meter does not require mainte nance 10 Storage In the case of storage of the device the fo
18. s V Q CAP TEMP and the black one to sockets COM press the MODE button until e appears in the display e make sure symbol is displayed with open test leads and in the case of shorted terminals of the measurement probes the display shows e touch the test probe tips to the circuit under test read the result of the measurement on the display if the re sistance is 500 a tone will sound e having done the test disconnect the test leads from the meter 5 5 Diode Measurements WARNING Measurements must not be realised in live circuits Capaci tors must be discharged 15 WARNING Do not realise measurements if the battery compartment is open In order to realise continuity test it is necessary to realise the following actions place the rotational selector in the position Q fF ej CAP connect the red test lead to sockets and the black one to sockets COM press the MODE button until appears on the display e touch the test probes to the diode under test forward voltage will indicate 0 4V to 0 7V reverse voltage will indicate OL shorted devices will indicate near and an open device will indicate OL in both polarities e having done the test disconnect the test leads from the meter 5 6 Capacitance measurements WARNING Measurements must not be realised in live circuits Capaci tors must be discharged WARNING
19. tion 13 battery cover el 4 2 LCD display AUTOT ad HOLD REL EM Re 2 Illustration 2 LCD display of the CMP 401 meter minus sign AC DC AC alternating current and DC direct currrent AUTO AutoRange mode diode test mode ej continuity check mode HOLD Data Hold mode ZERO Relative Measurement mode 11 Hz frequency duty cycle test mode M n m V units of measure list low battery indication BAT low battery indication change battery 43 Test leads The manufacturer guarantees correct measurement indications provided original test leads are used WARNING Connection of inadequate test leads constitutes a risk of electric shock with a dangerous voltage or may be a cause of measurement errors 5 Measurements It is recommended to get acquainted thoroughly with the con tents of the present chapter since it describes the measurement systems the manner of realisation of measurements and the basic principles of interpretation of the results 5 1 and DC current measurements WARNING Do not take current readings on circuits where the maximum current potential is not known Do not exceed the maximum allowable input range while measuring current 12 WARNING Do not realise measurements if the battery compartment is open
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