ENGLISH User`s manual
Contents
1. 4 3 2 AC Voltage MMS AS UMS eege eebe ction 9 4 3 3 Use of VoltSense feature cccccccccccccccceccceecceeeeceeeceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeess 10 4 3 4 AC Current measurement cc ccceeeeseeeeeeeeeeeeeeaeeeaaeeaeeeaaeeaeeeaaaeaeeeaaeaaaeaaaeeaaaeaaaeaea 11 4 3 5 Resistance measurement ccc cccccceccceccceeeceeeceeeceeeeceeeeeeeteeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeteeess 12 4 3 6 Continuity test and Diode test ccc ideidacistsbtsexessetsadavdsibidedetensmedasdidnssReapsdeeesieadeMbecesbedesd 13 5 MAINTENANCE EE 14 5 1 General mtormatons 14 52 En EE 14 ee ISAM osc see cecee cee cece ceeececet cerceeceeercececcerceerecercececcereeececercececcereeececeecececcerecceceereeceece 14 5 4 End oflife eege 14 6 TECHNICAL SPECIFICATIONS scsiniscsinscissscacscsuinsntadaecspaccntadchensendncauntddunadnersvidetindinsnddasseuaes 15 61 gin lee 15 E DEE 15 6 1 2 General ata EE 15 6 2 Environmental conditions gege 16 6 2 1 Climatic ConditlONS sssrini aaa a aA aa i 16 622 e 16 6 3 TE 16 6 3 1 Standard acCessories eee ce ccccccccccccececeeeeeeeeeeeeeeeeeeeeeeeeeeceeeeeeeeceeeeeeseeeseeseseeeeeeeeeeeeenes 16 d e GE 17 7 1 Warranty Le e a xcceceeeceseetseciserrecensee soreeecesereseececcesercecesceceseceseuceceeceeeceusseecuentee 17 Pe CIVICS anwar eine eee 17 EN 1 wn HT7011 1 SAFETY PRECAUTIONS AND PROCEDURES This clamp complies with EN 61010 1 For your own safety and in order to avoid damaging the instrument you re recom2. correct disposal a EN 14 HT7011 6 TECHNICAL SPECIFICATIONS 6 1 CHARACTERISTICS Accuracy is indicated as rdg dgt It is referred to 23 C 5 C with RH lt 80 RH DC Voltage Overload Range Resolution Accuracy Input impedance protection 0 00 199 9V 0 1V E 200 0 1000V 1V 1 0 rdg 2dgt 2M9 lt 100pF 1000VDC AC Voltage e Input Frequency Overload Range Resolution Accuracy impedance range protection 0 00 199 9V 0 1V M 750VA 200 0 1000V 1V 1 5 rdg 5dgt 2MQ lt 100pF 50 500Hz 50VACrms AC Current i Overload Range Resolution Accuracy Frequency range protection 0 0 200 0A 0 1A 3 0 rdg 3dgt 50 60Hz 400Arms Resistance and Continuity test Overload Range Resolution Accuracy Buzzer protection 0 00 199 9Q 0 10 1 0 rdg 5dgt 200 0 1 999kQ 0 001kQ 2 000 19 99kQ 0 01kQ S lt VA 0 002199 9kO 01KO 1 0 rdg 2dgt 50Q 600VACrms 200 0 1 999MQ _ 0 001MQ 2 000 19 99MQ 0 01MQ 1 9 rdg 5dgt Max open voltage 1 3V Diode test Range Accuracy Overload protection 0 4 0 8V 600VACrms 1 5 rdg 0 05V Max open voltage 3 0V 6 1 1 Safety Comply with EN 61010 1 Insulation Class 2 Double insulation Pollution Level 2 For inside use max height 2000m Installation category CAT III 1000V to the ground CAT IV 600V to the ground 6 1 2 General d
3. instrument against an incorrect operation Only the leads supplied with the instrument guarantee compliance with the safety standard They must be in good conditions and they must be replaced if necessary with an identical model Do not test or connect to any circuit whose voltage or current exceeds the specified overload protection Do not perform any test at environmental conditions exceeding the limits indicated Make sure that the battery are installed correctly Before connecting the test probes to the installation check that the function selector is positioned on the required measurement Make sure that the LCD and the rotate switch show the same as the function desired EN 2 wn HT7011 1 2 BEFORE USE Always keep to the instructions contained in this manual WARNING Non compliance with the warnings and or the instructions may damage the tester and or its components or injure the operator e Before changing the switch s position take off the clamp jaw from the tested conductor or the electrical circuit in order to avoid any accident e When the clamp is connected to the circuits to be tested never touch unused terminals e When testing resistors do not add voltage Although there is a protection circuit excessive voltage would cause malfunctioning e Before measuring current remove the voltage resistance test leads e When measuring current any strong current near or close to the clamp jaw will affec
4. key see Fig 4 part 1 The display goes black the red LED blinking and a buzzer sound are emitted for a while 3 By pushing and hold VoltSense key move the meter strictly near or in contact with the desired point of measure see Fig 4 part 2 The red LED is always on and the buzzer always sound if AC or Dc voltage is detected 4 Release VoltSense key to exitfrom the mode EN 10 4 3 4 AC Current measurement HT7011 WARNING Ah Make sure that all the test leads are disconnected from the meter terminals for current measurement Sasi HT 7011 TS A ap an ELEI Fig 5 Taking AC current measurement Rotate the switch on A position Put the conductor to be tested inside to the open clamp jaw see Fig 5 then the current value is shown at display OL message is shown at display the current under test is over the maximum value that the instrument is able to measure 4 For HOLD function please refer to paragraph 4 2 1 NO oO WARNING As the clamp has internal filter it could happen that the meter takes few J seconds to reach 0 value on the display This is not a defect indeed the user can proceed with a test as the temporary displayed value will not be added to the measured value EN 11 Mi ezu HT7011 4 3 5 Resistance measurement WARNING Before taking any in circuit resistance measurement remove power from the circuit to be
5. worth 2 1 41 In presence of distortions the Crest Factor assumes higher values as long as the wave distortion is higher EN 5 wn HT7011 3 PREPARATION FOR USE 3 1 INITIAL The tester has been checked from a mechanical and electrical point of view before shipment Every care has been taken to make sure that the instrument reaches you in perfect conditions However it s advisable to make a rapid check in order to detect eventual damages which may have occurred in transit Should this be the case enter immediately the usual claims with the carrier Make sure that all the accessories listed in paragraph 6 3 1 are contained in the package In case of discrepancies contact the dealer In case of returning of the tester please keep to the instructions given in paragraph 7 3 2 POWER SUPPLY The instrument is batteries supplied Two batteries 1 5V LRO3 UM4 AAA are included in the package Batteries life about 250 hours When batteries are low the symbol appears on the display Replace them immediately following the instructions given in paragraph 5 2 3 3 CALIBRATION The tester complies with the technical features listed in this manual Its performances are guaranteed for one year 3 4 STORAGE In order to guarantee the accuracy of the measurements after a period of storage in extreme environmental condition wait for the necessary time so that the tester returns to normal measuring conditions see environmental
6. ENGLISH User s manual ITALIA CE Copyright HT ITALIA 2006 Release EN 1 00 29 05 2006 Mi ezu HT7011 Contents 1 SAFETY PRECAUTIONS AND PROCEDURES ssscissscisssccttsccasiecsstatssenssptnnciauneigaadsnagbastecas hints 2 M ee Ma een seme ner nee ween rorene sentra se verge ees na rs ersan kaa Te nara S teu er ere reer 2 ee ABES E 3 S re 3 1 4 Measuring overvoltage categories definitions ceceeeeeeeeeeeeeeeeeeeeeenteeeeeeeees 4 2 GENERAL DESCRIPTION airsean e e 5 2 1 TRMS and MEAN VALUE measuring Imstruments 5 2 2 TRUE ROOT MEAN SQUARE VALUE and CREST FACTOR definitions 5 3 PREPARA ale He EE 6 3 1 Wegener 6 Se Ee E 6 3 3 Calibration EE 6 CE S o e e EEE E EEEE EEEE EE EE E EE E 6 4 OPERATING INSTRUCTIONS EE 7 4 1 Instrument description cccceeeeeceeeeeeeeeeeeeeeeeeeeeaaeeeeeeeeeeeeeseaaaaeceeeeseeeeseeaaeeees 7 4 1 1 Commands description cccccccccccccccceeeceeeeeeeeeeeeeeeeeeeeaaecaaeeaaeseaesaaaeaaaeaaaeeaaeaaaaaaes 7 42 FUnGUOM KEY CESCHPMOM iicniscisceisstncstsdnidesdaistsecaed winiied tan iaia iaia 7 421 HOLD Ry cst eh iain isan ote oh ena Maa i a cepa 7 4 2 2 VoltSense KOY ciisinsd caticctoiniventenstetaaontinateeiadinnanicres ierdatavanveadeunbiesuaigaver sauinrantetearaenanaecenniee 7 4 3 Functions of rotary switch deser 2sgeggNegEgE ENEE 8 4 3 1 DG Voltage MEaSUPeCME NM vxctiesssnncrctes ee iebegg reen egehadetgeeegener eege Staghan enee EUREN 8
7. QUARE instruments also defined as TRMS instruments which measure the true root mean square value of the quantity under test In presence of a perfectly sinusoidal wave both families provide identical results In presence of distorted waves instead the readings are different Mean value instruments provide only the value of the fundamental wave while True RMS instruments provide the value of the entire wave including harmonics within the passband of the instrument Accordingly if the same quantity is measured with both kinds of instruments the measured values are identical only if the wave is purely sinusoidal Should it be distorted True RMS instruments provide higher values than medium value instruments 2 2 TRUE ROOT MEAN SQUARE VALUE AND CREST FACTOR DEFINITIONS The current effective value is defined as follows In an interval of time equivalent to a period an alternate current with effective value having an intensity of 1A by passing ona resistor disperses the same energy which would be dispersed in the same period of time by a direct current having an intensity of 1A From this definition comes the numerical to T expression G H f zs Giel The effective value is indicated as RMS root mean square The Crest Factor is defined as the ratio between the Peak Value of a signal and its P effective value CF G This value varies according to the waveform of the signal RMS for a purely sinusoidal wave it s
8. ata Mechanical characteristics Size Weight including battery Max conductor size 193 L x 54 La x 31 H mm about 280g 16mm EN 15 HT7011 Supply Battery type Low battery indication Battery life AutopowerOFF Display Characteristics Sample rate Conversion mode 2 batterie 1 5V LRO3 UM4 AAA ig displayed when the battery level is too low about 250 hours after about 10min 3 LCD with maximum reading 2000 points plus decimal point unit symbol indication 1 5 times sec Mean value 6 2 ENVIRONMENTAL CONDITIONS 6 2 1 Climatic conditions Reference temperature Operating temperature Operating humidity Storage temperature Storage humidity Temperature coefficient 6 2 2 EMC 23 5 C 0 50 C lt 75 RH 20 60 C lt 80 RH 0 2 x specified accuracy C lt 18 C gt 28 C This tester was designed in accordance with EMC standards in force and its compatibility has been tested in accordance with EN61326 1 1997 A1 1998 A2 2001 This product conforms to the prescriptions of the European directive on low voltage 73 23 EEC and to EMC directive 89 336 EEC amended by 93 68 EEC 6 3 ACCESSORIES 6 3 1 Standard accessories The content of a standard package is the following e Instrument HT7011 Test leads Carrying bag Battery fitted User s manual EN 16 NY e WHT HT7011 7 SERVICE 7 1 WARRANTY CONDITIONS This instrument is
9. guaranteed against material or production defects in accordance with our general sales conditions During the warranty period the manufacturer reserves the right to decide either to repair or replace the product Should you need for any reason to return back the instrument for repair or replacement take prior agreements with the local distributor from whom you bought it Do not forget to enclose a report describing the reasons for returning detected fault Use only original packaging Any damage occurred in transit due to non original packaging will be charged anyhow to the customer The manufacturer will not be responsible for any damage to persons or things The warranty doesn t apply to e Accessories and batteries not covered by warranty e Repairs made necessary by improper use including adaptation to particular applications not foreseen in the instructions manual or improper combination with incompatible accessories or equipment e Repairs made necessary by improper shipping material causing damages in transit e Repairs made necessary by previous attempts for repair carried out by non skilled or unauthorized personnel e Instruments for whatever reason modified by the customer himself without explicit authorization of our Technical Dept The contents of this manual cannot be reproduced in any form without our authorization Our products are patented Our logotypes are registered We reserve the right to modify characterist
10. ics and prices further to technological developments 7 2 SERVICE Shouldn t the instrument work properly before contacting your distributor make sure that battery is correctly installed and working check the test leads and replace them if necessary Make sure that your operating procedure corresponds to the one described in this manual Should you need for any reason to return back the instrument for repair or replacement take prior agreements with the local distributor from whom you bought it Do not forget to enclose a report describing the reasons for returning detected fault Use only original packaging Any damage occurred in transit due to non original packaging will be charged anyhow to the customer The manufacturer will not be responsible for any damage to persons or things EN 17
11. installation e Measurement category Il is for measurements performed on circuits directly connected to the low voltage installation Examples are measurements on household appliances portable tools and similar equipment e Measurement category is for measurements performed on circuits not directly connected to MAINS Examples are measurements on circuits not derived from MAINS and specially protected internal MAINS derived circuits In the latter case transient stresses are variable for that reason the norm requires that the transient withstand capability of the equipment is made known to the user EN 4 wn HT7011 2 GENERAL DESCRIPTION HT7011 meter can performs the herewith measurements DC and AC voltage Detection of AC DC voltage with or without contact VoltSense AC current Resistance and test continuity Diode test Each parameter can be selected by rotating the 6 positions switch To abilitate the hold function the HOLD key is available There are also the VoltSense key and for their use please see paragraph 4 2 The selected quantity appears on a high contrast liquid crystal display with indication of measurement units and functions 2 1 TRMS AND MEAN VALUE MEASURING INSTRUMENTS Safety testers for alternate quantities are divided into two big families e MEAN VALUE instruments instruments which measure only the value of the wave at the fundamental frequency 50 or 60 Hz e TRUE ROOT MEAN S
12. mended to keep to the instructions contained in this manual and read carefully all the notes preceded by the symbol A Take extreme care for the following conditions while measuring Do not measure voltage or current in humid or wet environment Do not use the meter in presence of explosive gas material combustible gas material steam or dust Insulate yourself from the object to be tested Do not touch exposed metal conductive parts such as test lead ends sockets fixing objects circuits etc If you detect anomalies of testing end metal part and attachment of the meter such as breakages deformations foreign substances no display etc do not take any measurement Measuring voltage over 20V as it might cause human body electricity conduction The followings symbols are used 1 1 e 0 e D Caution refer to the instruction manual An incorrect use may damage the tester or its components High Voltage ranger electrical shock risk Double insulated instrument AC Voltage or Current DC Voltage or Current PRELIMINARY This apparatus has been designed for use in an environment of pollution degree 2 Indoor use It measures AC or DC CURRENT and VOLTAGE on category IV up to 600V and III up to 1000V refer to ground plants For overvoltage categories please see paragraph 1 4 You must comply with the usual safety regulations aimed at Protecting you against the dangerous electric current Protecting the
13. specifications paragraph 6 2 1 EN 6 AN HT HT7011 4 OPERATING INSTRUCTIONS 4 1 INSTRUMENT DESCRIPTION 4 1 1 Commands description LEGEND Inductive open clamp jaw LCD display Keypad Rotary function selector Jacks aRWN Fig 1 Instrument description 4 2 FUNCTION KEY DESCRIPTION 4 2 1 HOLD key By pushing HOLD key the parameter s measured value is frozen on the display and the symbol Tel appears on it Pushing HOLD key another time deactivates this mode The same key permit to select between Diode Test and Test Continuity 4 2 2 VoltSense key By pushing VoltSense key the internal sensor for DC AC voltage detection with or without contact is activated This feature is available on each selector position included OFF position EN 7 NY e NHT HT7011 4 3 FUNCTIONS OF ROTARY SWITCH DESCRIPTION 4 3 1 DC Voltage measurement O D WARNING 1000VACrms Do not take any voltage measurement exceeding this limit in Maximum input for AC Voltage measurements is 1000VDC or order not to risk electrical shock or damaging the meter Fig 2 Taking DC voltage measurement Rotate the switch on V position Insert the red test lead plug into V Q jack and the black test lead plug into COM jack Connect the two long ends of test leads to the desired circuit see Fig 2 then reading will be displayed OL message is shown at display if the DC voltage under
14. t the accuracy e When measuring current always put the tested conductor in the middle of the clamp jaw in order to obtain a more accurate reading e If the reading value or the sign indication remains unchanged during the measurement check if the HOLD function is active 1 3 AFTER USE e Once the measurements are completed turn the rotary switch to OFF e If you expect not to use the clamp for a long time remove the battery EN 3 NY e D HT7011 1 4 MEASURING OVERVOLTAGE CATEGORIES DEFINITIONS The norm EN 61010 1 Safety requirements for electrical equipment for measurement control and laboratory use Part 1 General requirements defines what measuring category usually called overvoltage category is On paragraph 6 7 4 Measuring circuits it says OMISSIS circuits are divided into the following measurement categories e Measurement category IV is for measurements performed at the source of the low voltage installation Examples are electricity meters and measurements on primary overcurrent protection devices and ripple control units e Measurement category IIl is for measurements performed in the building installation Examples are measurements on distribution boards circuit breakers wiring including cables bus bars junction boxes switches socket outlets in the fixed installation and equipment for industrial use and some other equipment for example stationary motors with permanent connection to fixed
15. t threshold voltage of P N junction is showed on display 6 Reverse position of test leads to reading inverse polarization voltage EN 13 Mi zu HT7011 5 MAINTENANCE 5 1 GENERAL INFORMATIONS 1 This digital clamp meter is a precision instrument Whether in use or in storage please do not exceed the specification requirements to avoid possible damages or dangers 2 Do not place this meter at high temperatures or humidity or expose it to direct sunlight 3 Be sure to turn off the meter after use If you expect not to use the tester for a long time remove the battery in order to avoid leakages of battery liquid that would damage the internal parts 5 2 BATTERIES REPLACEMENT When E appears on the display replace the batteries WARNING Only expert and trained technicians must perform this operation Remove the test leads or the conductor under test before replacing the battery 1 Rotate the switch on OFF 2 Remove the test leads or the objects to be tested 3 Remove the screw from the battery cover and detach the batteries cover from the bottom cover 4 Remove the batteries and replace it with a same type new one 5 Replace the batteries cover and screw 5 3 CLEANING For cleaning the instrument use a soft dry cloth Never use a wet cloth solvents or water etc 5 4 END OF LIFE CAUTION this symbol indicates that equipment and its accessories shall be subject to a separate collection and
16. test is over the maximum value that the instrument is able to measure The symbol at display means that the voltage have an opposite sign respect the connection of Fig 2 For HOLD function please refer to paragraph 4 2 1 EN 8 NY e D HT7011 4 3 2 AC Voltage measurement WARNING f Maximum input for AC Voltage measurements is 1000VDC_ or 1000VACrms Do not take any voltage measurement exceeding this limit in order not to risk electrical shock or damaging the meter Fig 3 Taking AC voltage measurement Rotate the switch on V position Insert the red test lead plug into V Q jack and the black test lead plug into COM jack Connect the two long ends of test leads to the desired circuit see Fig 3 then reading will be displayed 4 OL message is shown at display if the AC voltage under test is over the maximum value that the instrument is able to measure 5 For HOLD function please refer to paragraph 4 2 1 SS EN 9 HT7011 4 3 3 Use of VoltSense feature A WARNING Maximum input for AC Voltage measurements is 1000VDC_ or 1000VACrms Do not take any voltage measurement exceeding this limit in order not to risk electrical shock or damaging the meter Kern TO v ann S UU VoltSense Fig 4 Taking VoltSense feature 1 Rotate the switch on any position and disconnect the test leads from meter 2 Pushi ng VoltSense
17. tested and discharge all the capacitors ESO wn y n ge yt 4 Fig 6 Taking resistance measurement Rotate the switch on Q position Insert the red test lead plug into V Q jack and the black test lead plug into COM jack Connect the two long ends of test leads to the desired circuit see Fig 6 then reading value of resistance will be displayed 4 When OL symbol is displayed the resistance under test is over the maximum value that the instrument is able to measure 5 For HOLD function please refer to paragraph 4 2 1 eh gt EN 12 Mi ezu HT7011 4 3 6 Continuity test and Diode test WARNING Ah Before taking any in circuit resistance measurement or diode test remove power from the circuit to be tested and discharge all the capacitors Fig 7 Taking continuity test and diode test 1 Rotate the switch on PF position 2 Pushing HOLD key to select Continuity test 29 symbol is shown at display 3 Insert the red test lead plug into V Q jack and the black test lead plug into COM jack and perform continuity test on the object on test see Fig 7 left side Buzzer emits sound if the measured resistance value is less about 500 4 Pushing HOLD key to select Diode test PF symbol is shown at display 5 Connect the red test leads to the anode of diode on test and the black test lead on the cathode ones see Fig 7 right side The corresponden
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