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YOKOGAWA 701931, User Manual

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YOKOGAWA 701931 User Manual Download Page 3

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IM 701931-01E

Checking the Contents of the Package

If the wrong instrument or accessories have been delivered, or if some 
accessories are missing or defective, contact the dealer from which you 
purchased them.

Current Probe (Model 701931) Main Body
Accessories
•  User’s manuals 

1 set

•  Carrying case

Safety Precautions

This probe meets the requirements as given in the IEC-61010.
The following general safety precautions must be observed during all phases of 
operation, service, and repair of this instrument. If this instrument is used in a 
manner not specified in this manual, the protection provided by this instrument 
may be impaired. Also, YOKOGAWA assumes no liability for the customer’s 
failure to comply with these requirements.

The following symbols are used on this instrument.

  To avoid injury, death of personnel or damage to the instrument, the 

operator must refer to an explanation in the User’s Manual or Service 
Manual.

  Both direct and alternating current.

  Do not apply around or remove from HAZARDOUS LIVE conductors.

Summary of Contents for 701931

Page 1: ...User s Manual IM 701931 01E 8th Edition 701931 Current Probe ...

Page 2: ...01931 Current Probe User s Manual IM 701931 01E This manual 701931 Current Probe User s Manual IM 701931 92 Document for China 701931 Current Probe User s Manual IM 701931 93Z2 Document for Korea The E and Z2 in the manual numbers are the language codes Contact information of Yokogawa offices worldwide is provided on the following sheet Document No Description PIM113 01Z2 List of worldwide contact...

Page 3: ...autions must be observed during all phases of operation service and repair of this instrument If this instrument is used in a manner not specified in this manual the protection provided by this instrument may be impaired Also YOKOGAWA assumes no liability for the customer s failure to comply with these requirements The following symbols are used on this instrument To avoid injury death of personne...

Page 4: ...nnected to the probe Do Not Operate When Wet To prevent electric shocks do not allow the unit to become wet and do not use the unit when your hands are wet Do Not Operate Near Flammable Materials Do not operate the probe in the presence of flammable or explosive liquids or vapors Do Not Use When Removed from the Case To avoid electric shock or fire never use the probe if the case has been removed ...

Page 5: ...ject charged with static electricity Touching the sensor head with an object whose electric potential is different A user charged with static electricity touching the core surface when cleaning the matching surfaces of the sensor head When cleaning the surfaces take static electricity measures such as wearing an antistatic wrist strap Gently wipe dirt from the surface of the unit with a soft cloth...

Page 6: ...estic household waste Product Category With reference to the equipment types in the WEEE directive this product is classified as a Monitoring and control instruments product When disposing products in the EU contact your local Yokogawa Europe B V office Do not dispose in domestic household waste Authorized Representative in the EEA Yokogawa Europe B V is the authorized representative of Yokogawa T...

Page 7: ...ame symbol appears in the corresponding place in the user s manual to identify those instructions In the manual the symbol is used in conjunction with the word WARNING or CAUTION WARNING Describes precautions that should be observed to prevent serious injury or death to the user CAUTION Describes precautions that should be observed to prevent minor or moderate injury or damage to the instrument No...

Page 8: ...931 Current Probe Product Overview 1 1 Features 1 1 Names of Parts 1 2 Description of Parts 1 3 Measurement Procedure 1 4 Notes on Use 1 4 Preparations for Measurement 1 5 Demagnetizing and Zero Adjustment 1 6 Measurement Procedure 1 7 Specifications 1 10 Product Specifications 1 10 Applicable Standards 1 11 Chapter 2 Malfunction First Investigate Corrective Action to be Taken in Case of an Abnorm...

Page 9: ...t such as YOKOGAWA DL DLM series and by clamping it to a conductor to be measured allows the current waveform to be easily captured Features Highly accurate current detection Easy current measurement Wideband frequency characteristics DC to 2 MHz Wide clamp permits measurement of high current levels Easy protect function during excessive input 701931 Current Probe ...

Page 10: ...1 2 IM 701931 01E Names of Parts Terminator Sensor Power Supply Cable Sensor Cable LOCK Indication 2 1 4 internal 3 5 6 7 8 2 UNLOCK Indication Current Direction Indication ...

Page 11: ... seconds During demagnetizing a demagnetizing waveform is output 6 Zero Adjustment Dial ZERO ADJ Use the zero adjustment dial to correct for the effect of a voltage offset or temperature drift on the unit When performing measurements always carry out a zero adjustment after demagnetizing 7 Output Connector The current waveform of the measured conductor is output at a constant rate 0 01 VA in conju...

Page 12: ... being performed do not apply the clamp to any bare conductors Be careful not to damage the insulation surface while taking measurements Read and observe all warnings and precautions relating to electrical safety for the measuring instrument being connected to the probe Do Not Operate When Wet To prevent electric shocks do not allow the unit to become wet and do not use the unit when your hands ar...

Page 13: ...Positive DC power Negative DC power Current to be measured A Current consumption vs current to be measured typical Current Consumption mA For the probe power rating of each model please refer to Relationship between the current being measured and probe s current cunsumption link of the following website http tmi yokogawa com products oscilloscopes current probes 1 Have the Power Supply Model 70193...

Page 14: ...et the input coupling of the waveform measurement instrument to DC 3 Connect the output connector of the 701931 to the input connector of the waveform measurement instrument Turn the clamp lever until it clicks and check that it is locked securely 4 Without clamping the conductor to be measured press the clamp lever until the LOCK indication appears and the UNLOCK indication disappears and then ch...

Page 15: ...t is below the maximum current value established by the maximum continuous input range the self heating of the sensor may cause the safety function of the instrument to activate in order to prevent damage to the instrument At high ambient temperatures the built in safety circuit may activate at current input levels below the rated continuous maximum Continuous input of current exceeding the rated ...

Page 16: ...ter powering on this unit may be subject to an appreciable offset drift due to the effect of self heating To counteract this allow the unit to warm up for about 30 minutes before carrying out measurement When performing continuous measurements be aware that the offset voltage drifts depending on factors such as the ambient temperature Under certain circumstances oscillation may occur if the probe ...

Page 17: ... voltage side of the circuit as appropriate Power source Load H L Directly after powering ON the demagnetizing waveform appears in the output this is not a malfunction Accurate measurement may be impossible in locations subject to strong external magnetic fields such as transformers and high current conductors or in locations subject to strong external electric fields such as radio transmission eq...

Page 18: ...pagation delay typical 57 ns Maximum Rated Power 7 2 VAmax at the maximum continuous input range Rated Supply Voltage 12 V 0 5 V Operating Temperature and Humidity Range 0 to 40 C 32 to 104 F 80 RH or less no condensation Storage Temperature and Humidity Range 10 to 50 C 14 to 122 F 80 RH or less no condensation Location for Use Indoor altitude up to 2000 m 6562 feet Effect of External Magnetic Fi...

Page 19: ...Basic immunity requirement 30 40 50 60 70 80 1 k 100 10 k 100 k 1 M 10 M 100 M Frequency Hz Figure 1 Frequency Characteristics Typical Characteristics Amplitude dB 0 dB 1 V 10 100 1000 1 k 10 100 10 k 100 k 1 M 10 M Frequency Hz Figure 2 Derating According to Frequency Maximum input current A 1 m 10 m 100 m 10 k 100 k 1 M Frequency Hz Figure 3 Input Impedance Typical Characteristics Input impedanc...

Page 20: ... to DC coupling The sensor is not locked it is not hooked securely Lock the sensor Cannot adjust to the zero level using the zero adjustment dial The sensor is magnetized Demagnetize the sensor before adjusting the zero level The amplitude is small across all frequencies The input impedance of the measurement instrument such as an oscilloscope is set to 50 Ω Set it to 1 MΩ Cannot make DC measureme...

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