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Hioki CM4371 Instruction Manual Download Page 22

19

Switching ranges

Switching ranges

AUTO range

MANUAL 2000 A range

MANUAL 600.0 A range

AUTO range

MANUAL 600.0 A range

MANUAL 20.00 A range

e.g. 1: Current measurement with the CM4373, CM4374

e.g. 2: Current measurement with the CM4371, CM4372

www.calcert.com

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1.800.544.2843

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Summary of Contents for CM4371

Page 1: ...EN Aug 2017 Revised edition 3 CM4371A961 03 17 08H Instruction Manual CM4371 CM4372 CM4373 CM4374 AC DC CLAMP METER www calcert com sales calcert com 1 800 544 2843 0 5 10 15 20 25 30...

Page 2: ...ries 12 Inspection Before Measurement 14 Current Measurement 15 Manual Hold Auto Hold 16 Switching ranges 19 Filter Function 20 MAX MIN AVG PEAK 21 Simultaneous display of DC current voltage peak valu...

Page 3: ...ature 28 Electric Charge Detection 29 Simultaneous display of DC current and DC voltage 29 DC power 29 Bluetooth Communications only for CM4372 CM4374 30 Power on Option Table 35 Repairs Inspections a...

Page 4: ...rrent simply by clamping it around a circuit In addition to current it provides voltage measurement frequency measurement rush current measurement resistance measurement diode measurement capacitance...

Page 5: ...er languages Trademark Bluetooth is a registered trademark of Bluetooth SIG Inc USA The trademark is used by HIOKI E E CORPORATION under license Android and Google Play are registered trademarks of Go...

Page 6: ...st lead 1 L4930 Connection Cable Set 2 Length 1 2 m L4931 Extension Cable Set 2 Length 1 5 m with the coupling connector DT4910 Thermocouples K L4938 Test Pin Set 7 L4939 Breaker Pin Set 4 1 CAT IV 60...

Page 7: ...DANGER Mishandling during use could result in injury or death as well as damage to the instrument Be certain that you understand the instructions and precautions in the manual before use WARNING With...

Page 8: ...s situation that will result in death or serious injury to the operator IMPORTANT Indicates information related to the operation of the instrument or maintenance tasks with which the operators must be...

Page 9: ...es that the instrument may be connected to or disconnected from a live conductor Indicates a grounding terminal Indicates a instrument that has been protected throughout by double insulation or reinfo...

Page 10: ...fety requirements for CAT III 1000 V CAT IV 600 V measuring instruments T Outlet Internal wiring Distribution panel Service entrance Service drop CAT IV 9 Power meter CAT III 9 Fixed installation CAT...

Page 11: ...range indicated by the ratings and VSHFL FDWLRQV VKRZQ RQ LQVWUXPHQW ODEHOLQJ RLQJ so may damage the instrument or cause it to become hot resulting in bodily injury 7R SUHYHQW DQ HOHFWULF VKRFN FRQ UP...

Page 12: ...0 Of measurement category III or IV Its rated voltage is higher than the voltage to be measured The optional test leads for this instrument conform to the safety standard 1 8VH D WHVW OHDG LQ DFFRUGDQ...

Page 13: ...asurement precautions Do not clamp around two wires NO Do not touch Do not pinch wire between jaws NO Do not input H FHVVLYHO KLJK currents NO Red display NO www calcert com sales calcert com 1 800 54...

Page 14: ...ay Barrier HOLD key Measurement terminals SHIFT key Selects function indicated in blue lettering Operation keys p 8 Battery cover Front Rear CM4372 Jaw clamp sensor Operation grip www calcert com sale...

Page 15: ...c shock use only the screw for securing the battery cover in place that are originally installed If you have ORVW D VFUHZ RU QG WKDW D VFUHZ LV GDPDJHG SOHDVH FRQWDFW RXU GHDOHU The indicator lights u...

Page 16: ...ed As the battery charge diminishes black charge bars disappear one by one from the left of the battery indicator The battery voltage is low Replace the batteries as soon as possible Blinks The batter...

Page 17: ...sed and its screw has been securely tightened There is no damage to the test lead insulation and neither the white sheathing nor metal conductor inside the wire are exposed There is no foreign matter...

Page 18: ...re circuit breaker AC current measurement 4 Hz AUTO AUTO AC DC AC DC A DC A AC A 3 Clamp the wire 2 Press for 1 sec Perform zero adjustment 1 Current direction Frequency detection range of AC current...

Page 19: ...value automatically retains To measured target Pressing the HOLD key again cancels the measured value hold function blinks Pressing the HOLD key for 1 second cancels the auto hold function Press for 1...

Page 20: ...DWLQJ VWDELOL HV ZLWKLQ WKH XFWXDWLRQ UDQJH described in the table in the next page Auto hold e g 100 0 A Auto hold e g 99 0 A Held measured value Measured value Start End End End Fluctuation range Fl...

Page 21: ...voltage 6 000 V 60 00 V 600 0 V range within 120 counts 1000 V range within 20 counts 1500 V range within 30 counts 6 000 V 60 00 V 600 0 V range 120 counts 1000 V range 20 counts 1500 V range within...

Page 22: ...2000 A range MANUAL 600 0 A range AUTO range MANUAL 600 0 A range MANUAL 20 00 A range e g 1 Current measurement with the CM4373 CM4374 e g 2 Current measurement with the CM4371 CM4372 www calcert co...

Page 23: ...ssband 100 Hz Measured value with reduced noise Frequency characteristics when XVLQJ WKH OWHU 600 0 A AC range 100 A input 7XUQ RII WKH OWHU IXQFWLRQ ZKHQ SHUIRUPLQJ measurement of power supply freque...

Page 24: ...AC A 3 Press for 1 sec DQFHO PEAK MAX PEAK MIN MAX Display refresh interval Waveform Measured value RMS value MIN The instrument performs true RMS measurement 0HDVXUHG YDOXH UHWDLQV 4 AVG The average...

Page 25: ...s for 1 sec PEAK display ON 2 p 29 9ROWDJH 9 UDQJH HG XUUHQW UDQJH HG 0 0 Trigger level 60 A XUUHQW UDQJH HG 0 0 Trigger level 200 A The input current that equals to the trigger level or less does not...

Page 26: ...e values even when a voltage is applied To measure peak values of each of current and voltage perform measurement using the MAX MIN AVG PEAK procedure Trigger level DC current DC voltage PEAK MIN PEAK...

Page 27: ...e for 40 s Power OFF 7R UHVWDUW WKH LQVWUXPHQW EULH VHW WKH URWDU VZLWFK WR 2 Backlight OFF No operation for 45 min You can turn the display back on by pressing a key or by turning the rotary switch N...

Page 28: ...sec HUR DGMXVWPHQW 2 Maximum wave height PEAK Example screen 250 A Interval during which rush current occurs Dozens to hundreds of milliseconds in duration AC current RMS value INRUSH DC current Maxi...

Page 29: ...lue is negative the buzzer will VRXQG DQG WKH GLVSOD ZLOO WXUQ UHG WKUHVKROG 9 Red display 2 3 H J FRPPHUFLDO SRZHU VXSSO YROWDJH PHDVXUHPHQW Do not touch R QRW LQSXW H FHVVLYHO high voltage NO Red Bl...

Page 30: ...unctions Continuity Check 2 Black Red Black Red Black Red 2 Press for 1 sec HUR DGMXVWPHQW 1 Press for 1 sec HUR DGMXVWPHQW 1 Resistance Diode Red display www calcert com sales calcert com 1 800 544 2...

Page 31: ...Measurement Functions Capacitance DT4910 when DT4910 is broken Red Black Black Red Temperature To change the temperature display unit p 36 www calcert com sales calcert com 1 800 544 2843 0 5 10 15 2...

Page 32: ...3 GLVSOD S 6LPXOWDQHRXV GLVSOD RI FXUUHQW DQG YROWDJH H J 6RODU SRZHU system maintenance SRZHU ULS DV VKRZQ LQ JXUH OHFWULF KDUJH Detection Red display 7KH FXUUHQW UDQJH LV HG UDQJH HG 0 0 UDQJH HG 0...

Page 33: ...Pad iPad Mini iPad Pro iPod Touch and Android devices For more information about this functionality see the Help function in the application software GENNECT Cross 1 Install the GENNECT Cross on your...

Page 34: ...HV RU RWKHU SHQDOWLHV DV D YLRODWLRQ RI DSSOLFDEOH ODZV RU UHJXODWLRQV RU PRUH LQIRUPDWLRQ VHH WKH DWWDFKHG 3UHFDXWLRQV RQFHUQLQJ 8VH RI TXLSPHQW 7KDW PLWV 5DGLR DYHV RU JR WR RXU ZHEVLWH The CM4372 a...

Page 35: ...372 CM4374 Turning on the Bluetooth function Bluetooth function OFF Bluetooth function ON LFRQ ZLOO DVK ZKHQ WKH LQVWUXPHQW is connected to a mobile device Press for 1 sec www calcert com sales calcer...

Page 36: ...vice is displaying the Instrument Settings screen simply move it close to a CM4372 or CM4374 to automatically pair it with the instrument the app can be paired with up to 8 instruments Allow about 5 t...

Page 37: ...form Graph function on the Home screen For more information about each function see the Help function in the GENNECT Cross General Measurement Saves measured values from multiple channels Logging Reco...

Page 38: ...tory setting Setting retained Canceling the auto power save APS function ON No Set each time DC current and DC voltage polarity detection function ON OFF OFF Yes Displaying all indicators Version of s...

Page 39: ...ting instruction Factory setting Setting retained Switching the temperature unit To change the temperature unit Press for 1 sec To save the setting Press for 1 sec C Yes www calcert com sales calcert...

Page 40: ...surement range Wrap the wire around the clamp sensor one or more times Each additional wrap of the wire will increase the measured value so that wrapping it once yields a measured value that is twice...

Page 41: ...I D VWURQJ PDJQHWLF HOG IURP D VRXUFH VXFK DV D QHDUE WUDQVIRUPHU RU KLJK FXUUHQW FLUFXLW RU LQ WKH SUHVHQFH RI D VWURQJ HOHFWULF HOG IURP D source such as a wireless device A sound is being emitted b...

Page 42: ...ars in the display it is necessary to repair the instrument Please contact your authorized Hioki distributor or reseller Err 002 ROM error Adjustment data Err 005 ADC error Hardware malfunction Err 00...

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