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Summary of Contents for Holaday Industries HI-3624
- Page 1 HI-3624 / HI-3624A ELF Magnetic Field Meter User's Manual © Copyright 1991 Holaday Ind. Inc. Manual #600044 04/91 $8.50...
- Page 3 Revision Record Manual #600044 HI-3624 / HI-3624A ELF Magnetic Field Meter Revision Description Date Release 4/91 Added CE label, updated 1/00...
- Page 5 TABLE OF CONTENTS Description ....... . 1 Specifications ......3 Operation .
- Page 7 LIMITED WARRANTY HOLADAY INDUSTRIES, INC. WARRANTS EACH MODEL HI-3624 / HI- 3624A POWER FREQUENCY FIELD STRENGTH METER TO BE FREE FROM DEFECTS IN MATERIAL AND WORKMANSHIP FOR A PERIOD OF ONE YEAR FROM DATE OF SHIPMENT TO THE PURCHASER. THIS WARRANTY...
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Page 9: Description
VDTs. The HI-3624 is a single axis flux density meter designed to be responsive to either sinusoidal or complex magnetic field waveforms such as produced by the vertical deflection systems of VDTs. - Page 10 Page 2 HI-3624 / HI-3624A Manual Model HI-3624 ELF Magnetic Field Meter...
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Page 11: Specifications
HI-3624 / HI-3624A Manual Page 3 Specifications Frequency Response: to 2000 Hz Flat - 3 dB 2000 Hz - 3 dB < 30 Falling 80 dB/decade > 2000 Hz Falling 40 dB/decade (Note: This frequency switchable to 5 Hz on... - Page 12 (mG) is calculated. While the HI-3624 indicates magnetic flux density (B) in units of milligauss, the flux density in microtesla or magnetic field strength (H) in milliamperes per meter may be obtained via the...
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Page 13: Operation
HI-3624 / HI-3624A Manual Page 5 Operation The ELF magnetic field sensor must be plugged into the HI-3624 meter case for proper operation; it makes no difference whether the sensor is plugged in before or after the meter is turned on. - Page 14 Page 6 HI-3624 / HI-3624A Manual B = (B where B = resultant flux density; = Reading in the X direction; = Reading in the y direction; = Reading in the Z direction.
- Page 15 In the case of the Model HI-3624A, the user may select the lower frequency of the band pass for the instrument as either 30 Hz (the value incorporated in the Model HI-3624) or 5 Hz as specified in the Swedish standard for measurements of magnetic fields produced by VDTs.
- Page 16 Page 8 HI-3624 / HI-3624A Manual rotated within a constant field, there will be an output from the sensor at a frequency corresponding to the movement and this will usually include frequency components greater than 5 Hz. Consequently, during such movement, the meter will typically show significant upscale indications.
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Page 17: Example Applications
HI-3624 / HI-3624A Manual Page 9 Example Applications of the HI-3624/HI-3624A Power Lines Magnetic fields near power lines can be easily measured with the HI-3624. An approach commonly used to characterize power line fields is to measure the flux density along a straight line which passes perpendicular to the power line. -
Page 18: Vdts
45 Hz and 75 Hz, depending on the particular design of the VDT. The HI-3624 is designed to properly detect these magnetic fields because of its rms detector and wide bandwidth. Two different methods for VDT magnetic field measurements have been commonly used. -
Page 19: Residential
HI-3624 / HI-3624A Manual Page 11 frequency response down to 5 Hz in accordance with recommendations used for VDT measurements in Sweden. The user is referred to the Swedish specifications for measurement (2) for application details. Residential Measurements Magnetic fields found in home environments are highly variable, depending on location within the home. - Page 20 Page 12 HI-3624 / HI-3624A Manual or air conditioning systems turn on or the compressor within a refrigerator cycles on, the flux density will increase. Measurements must take this condition into account and it is recommended that, when taking measurements in a room, the meter be watched for a period of time to observe for fluctuations in the indicated value of flux density.
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Page 21: References
HI-3624 / HI-3624A Manual Page 13 References (1) IEEE Standard Procedures for Measurement of Power Frequency Electric and Magnetic Fields from AC Power Lines. ANSI/IEEE standard 644-1987. Published by The Institute of Electrical and Electronics Engineers, Inc., 345 East 47th Street, New York, NY 10017. - Page 22 Page 14 HI-3624 / HI-3624A Manual - NOTES -...
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