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Omicron C-Probe 1 User Manual

Ac/dc current clamp
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User Manual
AC/DC Current Clamp
C-Probe 1

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Summary of Contents for Omicron C-Probe 1

  • Page 1 User Manual AC/DC Current Clamp C-Probe 1...
  • Page 2 The user is responsible for every application that makes use of an OMICRON product. OMICRON electronics translates this manual from the source language English into a number of other languages. Any translation of this manual is done for local requirements, and in the event of a dispute...

  • Page 3: Table Of Contents

    Table of Contents Table of Contents Preface ......................5 Symbols......................... 5 Safety Instructions ..................7 Principle Rules for Usage ....................7 Safety Operation......................7 Warranty ........................8 Technical Data ....................9 Dimensions........................9 General Data ....................... 10 Input and Output Quantities..................10 Typical Noise Levels at Output (RMS) ................
  • Page 4 AC/DC Current Clamp C-Probe 1 Maintenance and Service ................23 Storage ........................23 Cleaning ........................23 Service and Calibration ....................23 Appendix, Diagrams .................. 25 Ordering information....................25 Diagrams ........................25 Index......................31...

  • Page 5: Preface

    C-Probe 1. The user manual should be available at the site where C-Probe 1 is used. It should be read and understood by all people working with C-Probe 1.
  • Page 6 AC/DC Current Clamp C-Probe 1...

  • Page 7: Safety Instructions

    Principle Rules for Usage • C-Probe 1 should only be used when in a technically sound condition. Its use should be in accordance with the regulations, in a safe manner, and mindful of the dangers. In particular, avoid disruptions that could in turn affect safety.

  • Page 8: Warranty

    IEC 1010 regulation! • Ensure that the input sockets are grounded or appropriately isolated! Warranty There is a 12 months warranty period on C-Probe 1, starting with the delivery date. The warranty is limited exclusively to faulty material or manufacturing defects.

  • Page 9: Technical Data

    Technical Data Technical Data Dimensions Figure 3-1: Dimensions of C-Probe 1...

  • Page 10: General Data

    AC/DC Current Clamp C-Probe 1 General Data • Dimensions: 230 x 67 x 36 mm • Max. wire diameter: 11.8 mm • Max. opening of clamp jaws: 15 mm • Connecting cable: 2 m length, isolated banana plugs • Weight:...

  • Page 11: Typical Noise Levels At Output (Rms)

    Technical Data The above mentioned measurement deviations relate to the following data: • ambient temperature of 18 °C to 28 °C • relative humidity between 20 % and 75 % • wire centred and parallel to the marking on the clamp •...

  • Page 12: Environmental Conditions

    AC/DC Current Clamp C-Probe 1 Environmental Conditions Figure 3-2: Environmental conditions Reference area Environmental conditions Environm e ntal conditions for C-Probe 1 Operation Storage Temperature / °C Te m pe rature / °C Safety 3.8.1 Electrical Safety • Device with double isolation in hand-held area at normal usage, and single isolation between primary winding and secondary output.

  • Page 13: Electromagnetic Compatibility

    Technical Data 3.8.2 Electromagnetic Compatibility • Electrostatic discharge: 4 kV without interference. 8 kV without destruction. • Interference field: 3 V/m according to IEC 801-2. • Transients: 1 kV class 1 without interference. 2 kV class 2 with low interference according to IEC 801-4.
  • Page 14 AC/DC Current Clamp C-Probe 1...

  • Page 15: Functional Description

    Figure 4-1: Current clamp C-Probe 1 C-Probe 1 is equipped with a Hall probe that can be used to measure both alternating and direct current potential free without the need to interfere with the circuit to be measured.

  • Page 16: Description Of The Operating Elements

    AC/DC Current Clamp C-Probe 1 Description of the operating elements Figure 4-2: Operating elements of C-Probe 1 Legend: 1. Slide switch with 3 positons (OFF, 10 mV/A, 100 mV/A). 2. Battery condition indicator. 3. Zero adjustment of the current clamp.
  • Page 17 Functional Description 1 Slide switch with 3 positions • OFF: Current clamp is switched off. • 10 mV/A: Peak value measurement of AC or DC currents with a transformer ratio of 10 mV per A over the complete measurement range. •...
  • Page 18 AC/DC Current Clamp C-Probe 1 6 Control lamp for measurement range overflow "OL" This red LED lights up if • the measured current exceeds the adjusted measurement range • short current peaks exceed the measurement range • the measurement is not valid due to other reasons.

  • Page 19: Operation

    Figure 5-1: Zero adjustment 1. Connect C-Probe 1 to a DC voltmeter, e.g. to the Analog DC Input of the CMC 256 test set. 2. Select a measurement range with a resolution of at least 10 mV.

  • Page 20: Current Measurement

    2. Perform a zero adjustment, if required (for example with the Analog DC Input of the CMC 256 test set). 3. Connect C-Probe 1 to one of the analog outputs of the CMC 256 test set (red = +, black = -).

  • Page 21: Battery Check

    Operation Note: If remanence effects occur after measuring high DC currents, these effects can be eliminated either by opening and closing the clamp jaws several times (without a grasped wire!) or by exposing the clamp to a decreasing magnetic field. Battery Check If the current clamp is switched on and the battery condition indicator "ON"...
  • Page 22 AC/DC Current Clamp C-Probe 1...

  • Page 23: Maintenance And Service

    Maintenance and Service Storage If you either store or do not use C-Probe 1 for a longer period of time, please remove the battery and store it separately. The battery acid may run out, which would result in a damage of the current clamp.
  • Page 24 AC-DC Current Clamp C-Probe 1...

  • Page 25: Appendix, Diagrams

    Appendix, Diagrams Ordering information Table 7-1: Order description Order number Ordering information C-Probe 1 VEHZ 4000 AC/DC current clamp Supplied with 9 V battery and user manual Diagrams Refer also to table 3-1 “Accuracy data” on page 10. Figure 7-1: Maximum amplitude error Maximaler Amplitudenfehler im Meßbereich 100 mV/A (0-10A)
  • Page 26 AC-DC Current Clamp C-Probe 1 Figure 7-2: Maximum phase error at measurement range Maximaler Phasenfehler im Meßbereich 100 mV/A (0-10A) Maximum phase error at measurement range 100 mV/A (0-10 A) 100 mV/A for measurement currents of 0-10 A (AC) +0°/-2°...
  • Page 27 Appendix, Diagrams Figure 7-4: Maximum phase error at measurement range Maximaler Phasenfehler im Meßbereich 10 mV/A (0-40A) Maximum phase error at measurement range 10 mV/A (0-40 A) 10 mV/A for measurement currents of 0-40 A (AC) +0°/-2° +0°/-0.5° +0°/-2° +0°/-30° 1000 10000 Frequency / Hz...
  • Page 28 AC-DC Current Clamp C-Probe 1 Figure 7-6: Maximum amplitude error at measurement range Maximaler Amplitudenfehler im Meßbereich 10 mV/A (60-80A) Maximum amplitude error at measurement range 10 mV/A (60-80 A) 10 mV/A for measurement currents of 60-80 A (AC/DC) +0%/-10%...
  • Page 29 +1 713 830-4660 or 1 800 OMICRON E-Mail: techsupport@omicronusa.com Web: www.omicronusa.com For addresses of OMICRON offices with customer service centers, regional sales offices or offices for training, consulting and commissioning, please see the CONTACT section of our Web site www.omicron.at.
  • Page 30 Contact Information / Technical Support...

  • Page 31: Index

    ............10 .............. 23 address cleaning ..............23 contact information OMICRON address ..........29 adjusting to zero OMICRON address ..........29 ........... 17 C-Probe 1 calibration ............23 cleaning ............... 23 current measurement .......... 20 current measurement range ........ 15 bandwith of frequency ........
  • Page 32 AC-DC Current Clamp C-Probe 1 (cont.) current clamp diagrams ............23 calibration ............. 23 amplitude error at measurement range 10 mV/A for measurement currents of current measurement ........... 20 0-40 A (AC/DC) ........... 26 dimensions ............10 amplitude error at measurement range 10 mV/A for measurement currents of environmental conditions........
  • Page 33 Index hotline opening of clamp jaws ..............29 ........10 operating elements of C-Probe 1 ....16 ordering information ........... 25 overload ..............18 indicator battery ..............17 measurement range overflow....... 18 influencing factors ..........11 potential transformer .......... 15 input impedance of measuring device ..
  • Page 34 AC-DC Current Clamp C-Probe 1 technical data ............9 Technical Support ..........29 temperature variation ......... 11 transformer current/potential............ 15 voltage on live wire ..........10 voltage supply ............11 warranty ..............8 weight ............... 10 wire diameter ............10 wire position ............

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