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Holaday Industries HI-3624 User Manual

Manual is about: ELF Magnetic Field Meter

Summary of 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 a added ce label, updated 1/00

  • Page 5

    Table of contents description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 example applications . . . . . . . . . . . . . . ...

  • 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 extends to the original purchaser only and does no...

  • Page 9

    Hi-3624 / hi-3624a manual page 1 description the hi-3624 elf magnetic field meter is designed to measure the flux density of magnetic fields in the frequency range of 30 hz to 2 khz. The model hi-3624a provides for a switch selectable measurement range from 5 hz to 2 khz to conform with recent measu...

  • Page 10

    Page 2 hi-3624 / hi-3624a manual model hi-3624 elf magnetic field meter.

  • Page 11

    Hi-3624 / hi-3624a manual page 3 figure 1 specifications frequency response: 30 * to 2000 hz flat 30 * hz - 3 db 2000 hz - 3 db * hz falling 80 db/decade > 2000 hz falling 40 db/decade * (note: this frequency switchable to 5 hz on hi-3624a see figure 1) sensor: external, multi-turn loop, with inside...

  • Page 12

    Page 4 hi-3624 / hi-3624a manual 200 mg; 2 g; 20 g. Accuracy: within ± 5 % at calibration frequencies of 50, 100, 500 and 1000 hz. Power: two (2) nine volt alkaline batteries (neda 1604a, duracell mn1604 or equal). Battery life: up to 120 hours intermittent use. Linearity: 2% on hi-3624a (5% on hi-3...

  • Page 13

    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. A single switch controls the entire operation of the hi-3624 (exc...

  • Page 14

    Page 6 hi-3624 / hi-3624a manual b = (b x 2 + b y 2 + b z 2 ) 1/2 where b = resultant flux density; b x = reading in the x direction; b y = reading in the y direction; b z = reading in the z direction..

  • Page 15

    Hi-3624 / hi-3624a manual page 7 figure 2 it does not matter which orientation of the field sensor is used for the x orientation but the y and z orientations must be perpendicular to one another and the x orientation. Figure 2 illustrates one possibility for the three mutually orthogonal orientation...

  • 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 u...

  • Page 17

    Hi-3624 / hi-3624a manual page 9 figure 3 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 p...

  • Page 18

    Page 10 hi-3624 / hi-3624a manual a similar approach may be used for measuring the flux density produced by buried lines. In this case, the area must be explored by walking about with the meter, simultaneously moving the sensor in various orientations, until the region of maximum flux density is fou...

  • Page 19

    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 environment...

  • 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 perio...

  • Page 21

    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 100...

  • Page 22

    Page 14 hi-3624 / hi-3624a manual - notes -.