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®

®

AN ISO 9001:2015 COMPANY

MODEL - KM 235

TRMS 

DIGITAL MULTIMETER

OPERATION MANUAL

G 17, Bharat Industrial Estate, T. J. Road, 

Sewree (W), Mumbai - 400 015. INDIA. 

Sales Direct :

 (022) 24156638, 27754546.

Tel. :

 (022) 24124540, 24181649, 27750662. 

Email :

 sales@kusam-meco.co.in

Website : 

www.kusamelectrical.com 

®

LIST OF PRODUCTS

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 Digital Multimeter                    

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 Digital AC & AC/DC Clampmeter

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 AC Clamp Adaptor                  

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 AC/DC Current Adaptor

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 Thermo Anemometer               

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 Thermo Hygrometer

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 Distance Meter                        

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 Digital Lux Meter

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 Network Cable Tester              

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 Power Factor Regulator

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 Earth Resistance Tester           

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 Digital Panel Meters

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 DC Power Supplies                 

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 High Voltage Detector

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 Calibrators                               

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 Gas Analysers

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 Frequency Counter                  

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 Function Generator

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 Phasing Sticks                         

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 Battery Tester

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 Waterproof Pen Testers           

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 Solar Power Meter

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 EMF Detector

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 Wood, Paper & Grain Moisture Meter

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 Transistorised Electronic Analog & Digital Insulation   

    Resistance Testers(upto 10 KV)

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 Digital Sound Level Meter & Sound Level Calibrator

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 Digital contact & Non-contact Type Tachometer

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 Digital Non-contact (infrared) Thermometer

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 Maximum Demand Controller/Digital Power Meter

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 Digital Hand Held Temperature Indicators

Summary of Contents for KM 235

Page 1: ...ter Digital Lux Meter Network Cable Tester Power Factor Regulator Earth Resistance Tester Digital Panel Meters DC Power Supplies High Voltage Detector Calibrators Gas Analysers Frequency Counter Function Generator Phasing Sticks Battery Tester Waterproof Pen Testers Solar Power Meter EMF Detector Wood Paper Grain Moisture Meter Transistorised Electronic Analog Digital Insulation Resistance Testers...

Page 2: ... TABLE OF CONTENTS TITLE PAGE NO I Safety II Cenelec Directives III Special Features IV General Specifications V Electrical Specifications VI Product Description VII Maintenance VIII Test Certificate IX Warranty 01 03 04 04 06 13 25 27 28 ...

Page 3: ... 4mm for CAT III CAT IV ratings Refer to the category markings on your probe assemblies as well as on the add on accessories like detachable Caps or Alligator Clips if any for applicable rating changes 02 Observe proper safety precautions when working with voltages above 33 Vrms 46 7 Vpeak or 70 VDC These voltage levels pose In other words the meter will intelligently avoid entering the APO a pote...

Page 4: ...0 CU and RoHS directive 2011 65 EU 04 IV GENERAL SPECIFICATIONS Sensing True RMS sensing Display 3 5 6 digits 6 000 counts Update Rate 5 per second nominal o o Operating Temperature 10 C to 45 C Relative Humidity Maximum relative humidity 80 for o temperature up to 31 C decreasing linearly to 50 relative o humidity at 45 C Altitude Operating below 2000m o o Storage Temperature 20 C 60 C 80 R H wit...

Page 5: ...ana plug type K thermocouple Optional Purchase Accessories BKB32 banana plug to type k socket plug adaptor BMH 01 magnetic hanger BMP 25x soft carrying pouch 06 V ELECTRICAL SPECIFICATIONS Accuracy is given as of reading digits number of digits or o o otherwise specified 23 C 5 C ACV ACA accuracies are specified from 1 to 100 of range or otherwise specified Maximum Crest Factor 2 1 at full scale 4...

Page 6: ...0 4 rdg 2dgts 0 2 rdg 2dgts 60 00mV 600 0V 1000V 60 00V 600 0mV 6 000V Range Resolution 10 mV 100 mV 10 mV 100 mV 10 mV 100 mV 1 mV 10 mV 100 mV 1 V 08 1 Not specified for fundamental frequency 400Hz 2 Accuracy linearly decreases from 1 3d 100Hz to 10 3d 400Hz VFD_ACV with Low Pass Filter Range 10Hz 100Hz Fundamental 100Hz 400Hz Fundamental 1 0 rdg 3d 2 10 rdg 3d 600 0V 600 0V 1000V Accuracy 1000V...

Page 7: ...l Approximate input impedance 164pF for reference At direct input 50Vdc typical from quiescence 10 AC Current Range Burden Voltage Accuracy 600 0mA 6000mA 60 00mA 600 0mA 1 6 000A 2 10 00A 0 1mV mA 1 9mV mA 0 04V A 1 5 3d 1 0 3d Resolution 1 5d non zero residue may appear when backlight is on which will not affect the specified measuring range and accuracy 2 10A continuous 10A to 20A for 30 second...

Page 8: ... Continuity Threshold Between 30W and 480W Continuity ON Response Time 15ms Audible Indication Beep sound Visible Indication LCD Backlight Capacitance Accuracies with film capacitor or better 1 5 rdg 2d 1 5 rdg 8d Accuracy 2000nF 20 00nF 20 00mF 200 0nF 200 0mF 2000mF 4 5 rdg 10d 10 00mF Range Resolution 10 pF 100 pF 1 nF 10 nF 100 nF 1 mF 10 mF 1 Accuracies assume meter interior and the ambient h...

Page 9: ... proper meter functioning AutoV LoZ mode AutoV automatically selects measurement function of DCV or ACV based on their input levels via the test leads The input also provides a low ramp up impedance LoZ to drain ghost voltages 13 1 3 5 6 digits 6000 counts LCD display 2 Push buttons for special functions features 3 Selector to turn the Power On or Off and Select a function 4 Input Jack for 10A 20A...

Page 10: ...lter DSP and are capable of handling VFD Variable Frequency Drives signals for fundamental V Hz readings It also improves ACV and Hz reading stability when being used in most noisy electrical environments Note V V 15 With no input the meter displays when it is ready 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 app...

Page 11: ...button momentarily to toggle the functions Last selection will be saved as power up default for repeat measurement convenience Line Frequency functions Press the Hz push button momentarily to toggle Hz function It is only available to Voltage and Current related ranges Input sensitivity varies automatically with the function range selected while activating the Hz function 6V function range has the...

Page 12: ...5mA for an ultraviolet type 8mA for self checking systems If a flame signal current with inadequate strength or fluctuation beyond 10 check the following to avoid the risk of unwanted flame relay dropout For gas flames Flame Rod Ignition interference A flame signal current difference with the ignition both on and off greater than 0 5µA indicates the presence of ignition interference Insufficient g...

Page 13: ...ng between Live and Ground connections use direct contact testing with one single test probe via the input terminal COM or V The COM terminal Black has the best sensitivity 21 Capacitance Diode Press the SELECT button momentarily to toggle the functions Last selection will be saved as power up default for repeat measurement convenience In Diode function the normal forward voltage drop forward bias...

Page 14: ...icable 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 AVG feature readings Press the button for one second or more to toggle Relative Zero mode 23 MAX MIN AVG Record mode Press REC button momentarily to activa...

Page 15: ...rotary switch to the OFF position when the meter is not in use 1 Rotary switch or push button operations 2 Significant measuring readings of above 8 5 of ranges 3 Non OL readings for Resistance Continuity or Diode function 4 Non zero readings for Hz function 5 Electric field signal present for EF function 6 Significant movement indication as in Phase Rotation functions 25 Trouble Shooting If the i...

Page 16: ...nly but have no authority to extend a greater or different warranty on behalf of KUSAM MECO Each KUSAM MECO product is warranted to be free from defects in material and workmanship under normal use service The warranty period is one year 12 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...

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