KM 255-257 Manual - Kusam Electrical Industries Ltd.
Contents
1. 440V tolerance 250V 1000V Indication Bar graph segments amp audible beep tones proportional to the field strength Detection Frequency 50 60Hz Detection Antenna Top right end of the meter Probe Contact EF Detection For more precise indication of live wires such as distinguishing between live amp ground connections use the Red test probe for direct contact measurements 5 INTERNATIONAL ELECTRICAL SYMBOLS A Caution Refer to the explanation in this Manual Caution Risk of electric shock Earth Ground Double insulation or Reinforced insulation se AC Alternating Current DC Direct Current 6 PRODUCT DESCRIPTION Note Top of the line model is used as representative for illustration purposes Please refer to your respective model for function availability 1 3 5 6 digits 6000 counts LCD display Push buttons for special functions amp features Selector to turn the Power On or Off amp Select a function Input Jack for milli amp and micro amp current functions 5 Input Jack for all functions EXCEPT current uA mA A functions 6 Common Ground reference Input Jack for all functions 7 Input Jack for 8A 15A for 30sec current function Analog bar graph The analog bar graph provides a visual indication of measurement like a traditional analog meter needle It is excellent in detecting faulty contacts identifyi2. best way to avoid damage is to use a clamp meter or to connect a clamp attachment to your DMM To prevent excess current from flowing through your meter always disconnect the test leads from the circuit under test whenever you change DMM functions Set your meter to the correct function say current and its highest range for the setting say 20A Next connect the test leads before you apply power to the circuit To be safe start by setting your meter to its highest range first TABLE OF CONTENTS General Specifications Electrical Specifications International Electrical Symbols Product Description SU ON E EE E P P A T 18 Maintenance Test Certificate Warranty 1 SAFETY Terms in this manual WARNING Identifies condition and actions that could result in serious injury or even death to the user CAUTION identifies conditions and action that could cause damage or malfunction in the instrument This manual contains information and warning that must be followed for operating the instrument safely and maintaining the instrument in a safe operating conditions If the instrument is used in a manner not specified by the manufactures the protection provided by the instrument may be impaired The meter is intended only for indoor use The meter protection rating against the users is double insulation per IEC61010 1 2nd Ed EN61010 1 2nd Ed UL61010 2nd Ed and CAN CSA C22 2 No 61010 1 1 0 92 to category Il 1000V C
3. 600 6000 uA is selected in corresponding V A mA or pA function respectively means range not available The Hz of mV function is designed specially for logic level 3V or 5V family frequency measurement Q Resistance Continuity 4 Capacitance gt Diode test functions Press the SELECT button momentarily to select the subject functions in sequence Last selection will be saved as power up default for repeat measurement convenience FORWARD BIAS REVERSE BIAS Discharge capacitors before making any measurement Large value capacitors should be discharged through an appropriate resistance load CAUTION CAUTION Using resistance and continuity function in a live circuit will produce false results and may damage the instrument In may cases the suspected component must be disconnected from the circuit to obtain an accurate reading Continuity function is convenient for checking wiring connections and operation of switches A continuous beep tone indicates a complete wire Normal forward voltage drop forward biased for a good silicon diode is between 0 400V to 0 900V A reading higher than that indicates a leaky diode defetive A zero reading indicates a shorted diode defetive An OL indicates an open diode defective Reverse the test leads connections reverse biased across the diode The digital display shows OL if the diode is good Any other readings indicate the diode
4. DAMAGES OR LOSSES INCLUDING LOSS OF DATA ARISING FROM ANY CAUSE WHATSOEVER All transaction are subject to Mumbai Jurisdiction G 17 Bharat Industrial Estate T J Road Sewree W Mumbai 400 015 INDIA Sales Direct 022 24156638 Tel 022 24124540 24181649 Fax 022 24149659 Email kusam_meco vsnl net Website www kusamelectrical com www kusam me co co in
5. The warranty period is Two years 24 months and begins from the date of despatch of goods In case any defect occurs in functioning of the instrument under proper use within the warranty period the same will be rectified by us free of charges provided the to and fro freight charges are borne by you This warranty extends only to the original buyer or end user customer of a KUSAM MECO authorized dealer This warranty does not apply for damaged Ic s fuses burnt PCB s disposable batteries carrying case test leads or to any product which in KUSAM MECO s opinion has been misused altered neglected contaminated or damaged by accident or abnormal conditions of operation or handling KUSAM MECO authorized dealer shall extend this warranty on new and unused products to end user customers only but have no authority to extend a greater or different warranty on behalf of KUSAM MECO KUSAM MECO s warranty obligation is limited at option free of charge repair or replacement of a defective product which is returned to a KUSAM MECO authorized service center within the warranty period THIS WARRANTY IS BUYER S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE KUSAM MECO SHALL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL
6. against possible damage to the meter due to improper connections to the uA mA or A input jacks when other function like voltage function is selected Auto Power Off APO The Auto Power Off APO mode turns the meter off automatically to extend battery life after approx 34 minutes of no rotary switch or push button operations To wake up the meter from APO press the SELECT CREST or REC button momentarily or turn the rotary switch OFF and then back on Always turn the rotary switch to the OFF position when the meter is not in use and then back on Disabling Auto Power Off Press the SELECT button while turning the meter on to temporarily disable the Auto Power Off APO feature Turn the rotary switch OFF and then back on to resume MAINTENANCE WARNING To avoid electrical shock disconnect the meter from any circuit remove the test leads from the input jacks and turn OFF the meter before opening the case Do not operate with open case Install only the same type of fuse or equivalent Cleaning and Storage Periodically wipe the case with a damp cloth and mild detergent do not use abrasives or solvents If the meter is not to be used for periods of longer than 60 days remove the battery and store it separately Trouble Shooting If the instrument fails to operate check battery fuses leads etc and replace as necessary Double check operating procedure as described in this user s manual If the instrumen
7. pA 3000 uF 2 0 rdg 5dgts 6 000 mA Accuracies with film capacitor or better 8 00 A Burden Voltage Diode Tester 0 10mV uA 600 0uA amp 6000uA ranges 7mivimA 60 00mA amp 600 0mA ranges 1 000 V 100 mV 1 0 rdg 3dgts 0 03V A 6 000mA amp 8 00A ranges 1 Test Current 0 56mA typical 8A Continuous gt 8A to 15A for 30 Sec Max with Open Circuit Voltage lt 1 8VDC typically P MINNES COO GOWIN INLET ar Hz Line ACV DCV Current amp AutoCheck DC Current Range Resolution Function Sensitivity Range On 6000 pA 10Hz 10kHz 60 00 mA 10Hz 50 kHz 0 600 0 mA EE 600 V 10Hz 50kHz 45Hz 1kHz Burden Voltage 10Hz 10kHz 0 10mV pA 600 0 A amp 6000A ranges 1 7mV mA 60 00mA amp 600 0mA ranges 0 03V A 6 000mA amp 8 00A ranges 10Hz 1kHz 8A Continuous gt 8A to 15A for 30 Sec Max with G A 5 minutes cool down interval Accuracy 0 03 3d Temperature 50 C 1000 C 0 3 rdg 3dgts 58 F 1832 F 0 3 rdg 6dgts K Type Thermocouple range amp accuracy not included Supplied Thermocouple suitable for measurement upto 250 C Logic Level Hz mV Function Sensitivity square wave 5 00Hz 500 0kHz 3 Vpeak 5 00Hz 1 000MHz 5 Vpeak Accuracy 0 03 2d Non Contact EF Dection Bar Graph Typical Voltage 20V tolerance 10V 36V po 55V tolerance 23V 83V SS 110V tolerance 59V 165V 220V tolerance 124V 330V
8. ACV input Impedance Initially approx 2 5kQ 120pF nominal Impedance increases abruptly within a fraction of a second as display voltage is above 50V typical Ended up impedance vs display voltages typically are 15kQ 100V 100kKQ 300V 250kQ 600V 375KQ 1000V AutoCheck DCV 50Hz 60Hz 1 000V 1000V 1mV 1V 1 3 rdg 3dgts AutoCheck Lo Z DCV Threshold gt 1 0VDC amp lt 1 0VDC nominal AutoCheck Lo Z DCV Input Impedance Initially approx 2 5kQ 120pF nominal Impedance increases abruptly within a fraction of a second as display voltage is above 50V typical Ended up impedances vs display voltages typically are 15kQ 100V 100kQ 300V 250kQ 600V 375kQ 1000V Resistance a Open Circuit Voltage 0 45VDC typical CREST Mode Accuracy Specified accuracy plus 150 digits for changes gt 5ms in duration RECORD Mode Accuracy Specified accuracy plus 100 digits for change gt 100ms in duration Autocheck Ohm 00 00Q 60 00MQ 10moe 10ka 1 2 rdg 10dgts Open Circuit Voltage 0 45VDC typical AutoCheck Ohm Threshold lt 10 00MQ nominal Audible Continuity Tester AudibleThreshold Between 100 and 800 Capacitance AC Current Range Resolution Accuracy 2 60 00 nF 10 pF 50Hz 400Hz O rdg 5dgts 600 0 nF 100 pF orod E pagis 600 0 pA 100 nA 6 000 pF 6000 uA 60 00 uF 1 5 rdg 5dgts 60 00 mA i 1 0 rdg 3dgts 600 0 uF 100 nF 600 0mA 100
9. AT III 600V amp CAT IV 300V AC amp DC Terminals to COM measurement category V Category Il 1000V CAT III 600V and CAT IV 300V AC amp DC mAuA Category lll 500VAC and 300VDC A Category Ill 600VAC and 300VDC Per IEC61010 1 2nd Ed 2001 Measurement Category Measurement Category IV CAT IV is for measurements performed at the source of the low voltage installation Examples are electricity meters and measurement on primary overcurrent protection devices and ripple control units Measurement Category Ill CAT Ill 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 the fixed installation Measurement Category Il CAT 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 To reduce the risk of fire or electric shock do not expose this product to rain or moisture To avoid electrical shock hazard observe the proper safety precautions when working with voltage above 60 VDC or 30 VAC rms These voltage levels pose a potential shock hazard to the user Do not touch test lead tips or the circ
10. DIGITAL MULTIMETER MODEL KM 255 KM 257 AUTO H c MAX MIN HH His ng 2 fa EF 300V CAT IV 600V CAT Ill 1kV CAT II rrammn LULU TAKE MEASUREMENT CAREFULLY AND YOU LL SPARE YOUR METER AND YOURSELF SOME PAIN Nearly every electrical engineer has a hand held Multimeter We sometimes take them for granted until we damage them or burn them out If you incorrectly connect your DMM to a circuit or have the DMM on wrong setting you damage the meter and possibly hurt yourself You can also get into trouble if you try to measure the voltage across a charged capacitor DMM users frequently burn their meters by trying to measure current the same way as they measure voltage Remember you measure voltage across a circuit and current through a circuit When you use the current input your DMM becomes alow impedance circuit element If you accidentally connect this low impedance path across your circuit you ll effectively short circuit it You can therefore send high current through your meter and severely damage it Unless the meter has a fused input you can even get an explosion or fire Even if you correctly insert your DMM into the circuit you can still damage your meter Don t try to measure current in excess of your meter s capacity Handheld DMMs usually have a maximum current rating of 10A or 20A If you are measuring current in industrial environment you can easily exceed those ratings The
11. M A pure sinusoidal waveform has a Crest Factor of 1 4A badly distorted sinusoidal waveform normally has a much higher Crest Factor NMRR Normal Mode Rejection Ratio NMRR is the DMM s ability to reject unwanted AC noise effect that can cause inaccurate DC measurements NMRR is typically specified in terms of dB decibel This series has a NURR specification of gt 60dB at 50 and 60Hz which means a good ability to reject the effect of AC noise in DC measurements CMRR Common Mode Rejection Ratio Common mode voltage is voltage present on both the COM and VOLTAGE input terminals of a DMM with respect to ground CMRR is the DMM s ability to reject common mode voltage effect that can cause digit rolling or offset in voltage measurements This series has a CMRR specifications of gt 60dB at DC to 60Hz in ACV function and gt 120dB at DC 50 and 60 Hz in DCV function If neither NMRR nor CMRR specification is specified a DMM s performance will be uncertain 7 OPERATION CAUTION Before and after hazardous voltage measurements test the voltage function on a known source such as line voltage to determine proper meter functioning Auto Check V Q k ae L v1 AutoCheck mode This innovative AutoCheck feature automatically selects measurement function of DCA ACV or Resistance Q based on the input via the test leads e With no input the meter displays Auto when it is ready
12. Q to a few hundred kQ s on high voltage hard signals Loz displays on the LCD to remind the users of being in such low impedance mode Peak initial load current while probing 1000VAC for example can be up to 566mA 1000V x 1 414 2 5kQ decreasing abruptly to approx 3 8mA 1000V x 1 414 375kQ within a fraction of a second Do not use AutoCheck mode on circuits that could be damaged by such low input impedance Instead use rotary selector V or V high input impedance voltage modes to minimize loading for such circuits DCV ACV amp Line Frequency functions Press the Hz push buttion for one second or more to activate or to exit Hz nN a A G r Note Input sensitivity varies automatically with function range selected before activating the Hz function 6V function range has the highest and the 1000V range has the lowest It is recommended to first measure the signal voltage or current level then activate the Hz function in that voltage or current range to automatically set the most appropriate trigger level You can also press the RANGE button momentarily to select another trigger level manually If the Hz reading becomes unstable select lower sensitivity to avoid electrical noise If the reading shows zero select higher sensitivity Number of Bar graph pointer is used to indicate input range sensitivity selected 1 2 3 4 pointers indicate 6 60 600 1000V 6 10 A 60 600 mA or
13. With no voltage signal but a resistance below 10MQ nominal is present the meter displays the resistance value When the resistance is below Audible Threshold the meter further gives a continuity beep tone When a signal above the voltage threshold of 1V DC or AC up to the rated 1000V is present the meter displays the voltage value in appropriate DC or AC whichever larger in peak magnitude Note Range Lock and Function Lock Feature When a measurement reading is being displayed in AutoCheck mode press the RANGE or SELECT button momentarily 1 time can lock the range or functions it was in Press the button momentarily repeatedly to step through the ranges or functions As Hazardous Alter When making resistance measurement in AutoCheck mode an unexpected display of voltage readings alters you that the object under test is being energized Ghost voltage Buster Ghost voltages are unwanted stray signals coupled form adjacent hard signals which confuse common multimeter voltages measurements Our AutoChecks mode provides low ramp up input impedance approx 2 5kQ at low voltage to drain ghost voltages leaving mainly hard signal values on meter readings It is an invaluable feature for precise indication of hard signals such as distinguishing between hot and open wires to ground in electrical installation applications WARNING AutoChecks mode input impedance increases abruptly from initial 2 5k
14. e Operating below 2000m Storage Temperature 20 C 60 C lt 80 R H With battery removed Temperature Coefficient Nominal 0 15 x specified accuracy C 0 C 18 C or 28 C 40 C or otherwise specified Sensing KM255 Average sensing KM257 True RMS sensing Pollution Degree 2 Safety Double insulation per IEC61010 1 2nd Ed EN6100 1 2nd Ed UL61010 1 2nd Ed amp CAN CSA C22 2 No 61010 1 0 92 to Category II 1000V CAT III 600V and CAT IV 300V AC amp DC Transient Protection 6 5kV 1 2 50us surge Terminals to Com Measurement Category V Category II 1000V CAT III 600V and CAT IV 300V AC amp DC mAuA Category Ill 500VAC and 300VDC A Category III GOOVAC and 300VDC E M C Meets EN61326 1 2006 En55022 EN61000 3 2 EN61000 4 2 EN61000 4 3 EN61000 4 4 EN61000 4 5 EN61000 4 8 EN61000 4 11 In an RF field of 3V m Capacitance function is not specified Other function ranges Total Accuracy Specified Accuracy 100 digits Performance above 3V m is not specified e Overload Protection uA amp mA 0 63A 500Vac IR 150kA 500Vac A 10A 600Vac IR 100kA 600Vac V 1050 Vrms 1450 Vpeak AutoCheck mV Ohm amp others 600 Vrms Low Battery Blow approx 2 3V Power Supply 1 5V AAA Size battery x 2 Power Consumption typical 3 5mA APO Consumption typical 10uA APO Timing Idle for 34 minutes Dimension 161 L x 80 W x 50 H mm With Holster W
15. eight Approx 340 gm With Holster Special Features AutoCheck V amp Q Auto ranging MAX MIN_ record Crest mode Peak Hold Backlighted LCD Auto ranging Relative Zero mode Display Hold EF Detection NCV Interface capabilities with PC computer Input warning detection Accessories Test lead pair batteries installed users manual BKP 60 banana plug type K thermocouple Optional purchase accessories USB interface kit BRUA 20 Magnetic hanger BMH 01 BKB32 banana plug to type K socket plug adaptor 4 Electrical Specification Accuracy is given as of reading digits number of digits or otherwise specified 23 C 5 C and less than 75 R H True RMS model KM257 ACV amp ACA accuracies are specified from 5 to 100 of range or other wise specified Maximun Crest Factor lt 3 1 at full scale amp 6 1 at half scale and with frequency components fall within the meter specified frequency bandwidth for non sinusoidal waveforms AC Voltage 50Hz 400Hz 60 00 mV 600 0 mV 100 uV 6 000 V 1 0 rdg 5dgts i CMRR gt 60dB DC to 60Hz Rs 1kQ Input Impedance 10MQ 50 pF nominal DC Voltage 0 2 rdg 3dgts NMRR gt 60dB DC to 50Hz 60Hz CMRR gt 100dB DC 50Hz 60Hz Rs 1kQ Input Impedance 10MQ 50 pF nominal AutoCheck ACV accuracy 50Hz 60Hz 1 000V 1000V 1mV 1V_ 1 4 rdg 5dgts AutoCheck Lo Z ACV Thershold gt 1V nominal AutoCheck Lo Z
16. is resistive or shorted defective DCmV ACmV Temperature C amp F functions Press the SELECT button momentarily to select the subject functions in sequence Last selection will be saved as power up default for repeat measurement convenience ACmV Note Be sure to insert the banana plug K type temperature bead probe Bkp60 with correct polarities You can also use a plug adapter Bkb32 Optional purchase with banana pins to K type socket to adapt other standard K type mini plug temperature probes uA mA and A Current functions Press SELECT button momentarily to toggle between DC and AC Last selection will be saved as power up default for repeat measurement convenience Note When measuring a 3 phase system special attention should be taken to the phase to phase voltage which is significantly higher than the phase to earth voltage To avoid exceeding the voltage rating of the protection fuses s accidentally always consider the phase to phase voltage as the working voltage for the protection fuse s Electric Field EF Detection At Volt or Current funcion press the EF button for one second or more and release to toggle to EF Detection feature The meter displays E F when it is ready Signal strength is indicated as a series of bar graph segments on the display plus variable beep tones EF NCV e Non Contact EF Detection An antenna is located along the top right end of the ma
17. ng potentiometer clicks and indicating signal spikes during adjustments Average sensing RMS calibrated RMS Root Mean Square is the term used to describe the effective or equivalent DC value of an AC signal Most digital multimeters use average sensing RMS calibrated technique to measure RMS values of AC signals This technique is to obtain the average value by rectifying and filtering the AC signal The average value is then scaled upward calibrated to read the RMS value of a sine wave In measuring pure sinusoidal waveform this technique is fast accurate and cost effective In measuring non sinusoidal waveforms however significant errors can be introduced because of different scaling factors relating average to RMS values True RMS True RMS is a term which identifies a DMM that responds accurately to the effective RMS value regardless of the waveforms such as square sawtooth triangle pluse trains spikes as well as distorted waveforms with the presence of harmonics Harmonics may cause 1 Overheated transformers generators and motors to burn out faster than normal 2 Circuit breakers to trip prematurely 3 Fuses to blow 4 Neutrals to overheat due to the triplen harmonics present on the neutral 5 Bus bars and electrical panels to vibrate Crest Factor Crest Factor is the ratio of the Crest instantaneous peak value to the True RMS value and is commonly used to define the dynamic range of a True RMS DM
18. ntarily to read the MAX and MIN readings in sequence Press the button for 1 second or mode to exit CREST capture mode Auto ranging and Auto Power Off are disabled automatically in this mode Backlighted LCD display Press the SELECT button for 1 second or more to toggle the LCD backlight The backlight will also be turned off automatically after 32 second to extend battery life Hold The hold feature freezes the display for later vies Press the HOLD button momentarily to toggle the hold feature Relative Zero mode Relative zero allows the user to offset the meter consecutive measurements with the displaying reading as the reference value Practically all displaying readings can be set as relative reference value including MAX MIN feature readings Press the REL button momentarily to toggle relative zero mode Manual or Auto ranging Press the RANGE button momentarily to select manual ranging and the meter will remain in the range it was in the LCD turns off Press the button momentarily again to step through the ranges Press and hold the button for 1 second or more to resume auto ranging Note Manual ranging feature is not available in Hz and F functions Set Beeper Off Press the RANGE button while turning the meter on to temporarily disable the Beeper feature Turn the rotary switch OFF and then back on to resume Beep Jack Input Warning The meter beeps as well as display InEr to warn the user
19. t voltage resistance input terminal has subjected to high voltage transient caused by lightning or switching surge to the system by accident or abnormal conditions of operation the series fusible resistors will be blown off become high impedance like fuses to protect the user and in the instrument Most measuring functions through this terminal will then be open circuit The series fusible resistors and the spark gaps should then be replaced by qualified technician Refer to the WARRANTY section for obtaining warranty or repairing service Battery and Fuse replacement Battery use 1 5V AAA Size battery x 2 Fuses use Fuse FS1 for uwAmA current input 0 63A 500Vac IR 150kA F fuse Fuse FS2 for A current input 10A 600Vac IR 100kA F fuse Battery and Fuse replacement Loosen the screw from the access cover of the case bottom Lift the access cover Replace the batteries or fuse Re fasten the screw MUMBAI TEST CERTIFICATE DIGITAL MULTIMETER This Test Certificate warrantees that the product has been inspected and tested in accordance with the published specifications The instrument has been calibrated by using equipment which has already been calibrated to standards traceable to national standards MODEL NO KM 255 257 SERIAL NO aN ISO 9001 REGISTERED pass WARRANTY Each KUSAM MECO product is warranted to be free from defects in material and workmanship under normal use amp service
20. ter which detects electric field surrounds current carrying conductors It is ideal for tracing live wiring connections locating wiring breakage and to distinguish between live or earth connections e Probe Contact EF Detection For more precise indication of live wires such as distinguishing between live amp ground connections use the Red test probe for direct contact measurements PC computer interface capabilities The instrument equips with an optical isolated interface port at the meter back for data communication Optional purchase PC interface kit BRUA2OX is required to connect the meter to the PC computer RS232 or USB ports MAX MIN at Fast 20 s measurement mode Press REC button momentarily to activate MAX MIN recording mode The LCD MAX MIN turn on and the reading update rate will be increased to 20 second The meter beeps when new MAX maximum or MIN minimum reading is updated Press the button momentarily to read the MAX and MIN readings in sequence Press the button for 1 second or more to exit MAX MIN recording mode Auto ranging remains and Auto Power Off is disabled automatically in this mode 5ms CREST capture mode Press CREST button momentarily to activate CREST instantaneous Peak Hold mode to capture voltage or current signal duration as short as 5ms The LCD C amp MAX turn on The meter beeps when new MAX maximum or MIN minium reading is updated Press the button mome
21. uit being tested while power is applied to the circuit being measured Keep your fingers behind the finger guards of the test leads during measurement Inspect test leads connectors and probes for damaged insulation or exposed metal before using the instrument If any defects are found replace them immediately Do not measure any current that exceeds the current rating of the protection fuse Do not attempt a current measurement to any circuit where the open circuit voltage is above the protection fuse voltage rating Suspected open circuit voltage should be checked with voltage functions Never attempt a voltage measurement with the test lead inserted into the uA mA or A input jack Only replace the blown fuse with the proper rating as specified in this manual Warning CAUTION Disconnect the test leads from the test points before changing functions Always set the instrument to the highest range and work downward for an unknown value when using manual ranging mode 2 CENELEC DIRECTIVES The instruments conforms to CENELEC Low voltage directive 2006 95 EC and Electromagnetic compatibility directive 2004 108 EC 3 GENERAL SPECIFICATION e Display 3 5 6 digits 6 000 counts Update Rate 5 per second nominal 24 Segments Bar graph 40 per second max Operating Temperature 0 C to 40 C Relative Humidity Maximum relative humidity 80 for temperature up to 31 C decreasing linearly to 50 relative humidity at 40 C Altitud
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