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YOKOGAWA 701933 Скачать руководство пользователя страница 16

14

IM 701933-01E

Demagnetization and Zero Adjustment

CAUTION

• When unplugging the output terminal, always release the lock first, then pull the

terminal out while holding the connector. Damage can result if you forcibly pull the

terminal without releasing the lock, or pull by the cable instead of the connector.

• When using an input terminal other than a BNC terminal, make sure the polarity

of the input terminal is correct.

• Do not demagnetize the probe while the clamp is positioned around the

conductor under measurement. The demagnetization procedure can inject

current into the conductor under measurement, possibly resulting in damage to

connected components. For the same reason, make sure that the probe clamp

is not positioned around a conductor under measurement when supplying power

to the 701933. A demagnetizing waveform can be generated when power is

supplied.

1.

Ground the input of the waveform observation instrument and adjust the

trace to the zero position.

2.

Set the input coupling of the waveform measuring instrument to DC.

3.

Connect the output terminal of the 701933 to the input terminal of the

waveform observation instrument. Turn the connector until it clicks into

place, and confirm that it is securely locked.

4.

Without positioning the probe clamp around the conductor under

measurement, press the open/close lever until the unlocked indicator

goes out, then confirm that the sensor head is securely closed.

5.

Press the demagnetization switch (DEMAG) on the terminator.

6.

Turn the zero adjust dial on the terminator to adjust the trace to the zero

position.

7.

If you are unable to adjust the trace to zero in the step above, turn the

coarse adjustment trimmer until the trace comes within a range that can

be zeroed using the zero adjust dial.

Note

• The output from this probe is terminated internally. Use the probe with a waveform

measuring instrument of high input impedance. Accurate measurement cannot be

obtained at an input impedance of 50 Ω.

• Oscillation may occur when you execute DEMAG, but this has no effect on

measurements.

• The positive side of the waveform that is generated when you execute DEMAG may

not be symmetrical to the negative side, but this has no effect on measurements.

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Содержание 701933

Страница 1: ...User s Manual IM 701933 01E 8th Edition 701933 Current Probe ...

Страница 2: ...ow us to serve you best by completing the user registration form accessible from our website https tmi yokogawa com support Contact Us If you want to resolve a technical support issue or need to contact YOKOGAWA please fill out the inquiry form on our website https tmi yokogawa com contact PIM 103 06E ...

Страница 3: ...nformation of Yokogawa offices worldwide is provided on the following sheet Document Number Description PIM 113 01Z2 List of worldwide contacts Notes The contents of this manual are subject to change without prior notice as a result of continuing improvements to the product s performance and functionality The figures given in this manual may differ from those that actually appear on your product E...

Страница 4: ... observed during all phases of operation If the instrument is used in a manner not specified in this manual the protection provided by the instrument may be impaired YOKOGAWA assumes no liability for the customer s failure to comply with these requirements In addition before using the probe read the manuals of the measuring instrument to thoroughly familiarize yourself with its specifications and ...

Страница 5: ...ock do not get the instrument wet or use it with wet hands French AVERTISSEMENT Ne serrez pas les conducteurs nus pour éviter les courts circuits ou les blessures lorsque la tête du capteur est ouverte ou en mesure de mesurer Veillez à ne pas endommager la surface d isolation du conducteur à mesurer Connectez l alimentation à la borne d alimentation de la sonde option d un instrument de mesure de ...

Страница 6: ...on the surfaces may impair performance Gently wipe off any dust or dirt on the matching surfaces of the sensor head with a soft cloth It may generate resonance noise or impair performance Do not bend or pull the sensor cable or power cable to avoid damage due to disconnection Current sensors can be damaged by static electricity Be careful not to apply static electricity to the instrument including...

Страница 7: ...l peut être endommagé par des changements brusques de température ambiante des contraintes mécaniques ou des chocs Les surfaces correspondantes de la tête du capteur sont rectifiées avec précision Manipulez l instrument avec précaution car les rayures sur les surfaces peuvent altérer les performances Essuyez délicatement la poussière ou la saleté sur les surfaces correspondantes de la tête du capt...

Страница 8: ...r ou décolorer l instrument Lorsque l appareil est sous tension maintenez la tête du capteur fermée sauf lors du serrage du conducteur à mesurer Le laisser ouvert peut endommager l instrument Note Accurate measurements may not be possible if operated within close proximity to strong magnetic fields such as those produced by transformers circuits with large currents and wireless devices Depending o...

Страница 9: ...c household waste When disposing of products in the EEA or UK contact your local Yokogawa office in the EEA or UK respectively EEA European Economic Area Authorized Representative in the EEA AR Yokogawa Europe B V is the authorized representative of Yokogawa Test Measurement Corporation for this product in the EEA To contact Yokogawa Europe B V see the separate list of worldwide contacts PIM 113 0...

Страница 10: ...vent the danger of injury or death to the user CAUTION Describes precautions that should be observed to prevent minor or moderate injury or damage to the instrument French AVERTISSEMENT Attire l attention sur des gestes ou des conditions susceptibles de provoquer des blessures graves voire mortelles et sur les précautions de sécurité pouvant prévenir de tels accidents ATTENTION Attire l attention ...

Страница 11: ...ions 7 Conventions Used in This Manual 8 Product Overview 10 Features 10 Names of Parts 10 Description of Parts 11 Operating Procedure 12 Handling Precautions 12 Preparing for Measurement 13 Demagnetization and Zero Adjustment 14 Performing Measurement 15 Specifications 17 Product Specifications 17 Compliant Standards 18 Malfunction First Investigate 19 ...

Страница 12: ... positioning the clamp around the conductor under measurement Features Highly accurate current detection Easy current measurement Wide frequency bandwidth DC to 50 MHz Small size enables measurement of small currents Convenient protection function for excessive input Names of Parts Current direction mark Unlocked indicator Sensor Sensor cable Terminator 3 6 7 Power supply cable 4 5 1 2 DEMAG 0 1V ...

Страница 13: ... carry out zero adjustment 5 Coarse Adjustment Trimmer This is used only when zero adjustment cannot be performed using the zero adjust dial alone 6 Output Terminal This terminal is connected to a waveform measuring instrument of 0 1 V A input impedance 1 MΩ and outputs the current waveform of the conductor under measurement at a constant rate The terminal connects to the BNC input terminal of the...

Страница 14: ...s with the metal part of the sensor unit It may lead to a serious accident such as the occurrence of an arc Connect the power supply to the probe power terminal option of a waveform measuring instrument such as Yokogawa DL DLM series or use the power supply 701934 or 700938 Be careful of electric shock when connecting the probe to the device under measurement Read and observe the safety precaution...

Страница 15: ...Current Values and Current Consumption of the 701933 Current Probe Typical Current consumption mA 50 40 30 20 10 0 10 20 30 40 50 600 500 400 300 200 100 0 100 200 300 400 500 600 Positive power DC input Negative power DC input Positive power AC 50 Hz input Negative power AC 50 Hz input 1 Prepare the probe a power supply 701934 700938 and a waveform measuring instrument such as a digital oscillosc...

Страница 16: ...waveform measuring instrument to DC 3 Connect the output terminal of the 701933 to the input terminal of the waveform observation instrument Turn the connector until it clicks into place and confirm that it is securely locked 4 Without positioning the probe clamp around the conductor under measurement press the open close lever until the unlocked indicator goes out then confirm that the sensor hea...

Страница 17: ... high temperatures resulting in measured currents at or below the maximum continuous input range If a current exceeding the maximum continuous input range is input continuously the protection function can be activated repeatedly potentially causing damage to the probe Product specifications showing the maximum continuous input range also indicate a maximum peak current value of 50 Apeak non contin...

Страница 18: ...proximately 30 minutes Please note that during continuous measurement the offset voltage can drift depending on ambient temperature and other factors In rare instances connecting the power plug to a power supply that is ON can cause oscillations but malfunctions will not occur If this occurs opening and closing the sensor head using the open close lever will stop the oscillations and restore norma...

Страница 19: ...h 50 Hz 30 Arms input in a range of 0 to 40 C Propagation delay 13 ns Typical Maximum rated power 5 6 VA within maximum input Rated supply voltage 12 V 0 5 V Operating temperature and humidity 0 to 40 C 80 RH or less no condensation Storage temperature and humidity 10 to 50 C 80 RH or less no condensation Operating location Indoor use altitude up to 2000 m Effect of external magnetic fields Equiva...

Страница 20: ... degree applies to the degree of adhesion of a solid liquid or gas which deteriorates withstand voltage or surface resistivity Pollution degree 2 applies to normal indoor atmospheres usually with only non conductive pollution 2 For conformity to environmental regulations and or standards other than EU contact your local Yokogawa office PIM 113 01Z2 Figure 1 Frequency characteristics typical Freque...

Страница 21: ...s small Power is not ON Turn ON the power The oscilloscope or other measuring instrument is set for AC coupling Set the instrument to DC coupling The sensor is not locked the closing mechanism is not properly aligned Lock the sensor Cannot zero the probe with the zero adjust dial The sensor is magnetized Demagnetize the sensor and try the adjustment again The zero adjust is out of range due to dri...

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