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HOW TO ELIMINATE DETECTING
OVERLAPPING MAGNETIC FIELDS |
THIS CONDITION OCCURS IF TWO OR MORE LARGE SOLENOIDS OR RELAYS
ARE CLOSER TOGETHER.
DEPENDING ON HOW YOU USE THE HIGH/LOW SENSITIVITY RING, YOU
WILL BE ABLE TO INCREASE OR DECREASE THE �MAG-PROBE�S�
SENSITIVITY.
IN CASE, YOU WANT TO REDUCE THE SENSITIVITY JUST ENOUGH TO
DETECT ONLY ONE SOLENOID VALVE OR RELAY.
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YOU MUST INSTALL THE
HIGH/LOW SENSITIVITY RING
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FOLLOW THE DIRECTIONS ON PAGE 2
FIGURES 3, 4 & 5
AC DEVICES
NO SPECIAL PRECAUTION IS NECESSARY. THE HIGH/LOW SENSITIVITY
RING MAY BE INSTALLED WITH THE WHITE DOT IN EITHER DIRECTION.
DC DEVICES
EVEN IF YOU DON�T NEED THE HIGH/LOW RING TO DETECT THE DC
DEVICE, YOU MUST INSTALL IT IN ORDER TO REDUCE THE
�MAG-PROBE�S� SENSITIVITY.
AFTER INSTALLING THE HIGH/LOW RING, TRY TO DETECT THE LARGE
DEVICE WITH THE POWER APPLIED. (SEE �TESTING DC POWERED
DEVICES�. IT MAY BE NECESSARY TO REVERSE THE HIGH/LOW
RING.)
AC & DC DEVICES
SLIDE THE HIGH/LOW RING SLIGHTLY IN THE DIRECTIONS OF THE
�MAG-PROBE�S� LED, TRY IT ON THE DEVICE UNDER TEST, FIGURE
2, KEEP SLIDING THE HIGH/LOW RING TOWARD THE �MAG-PROBE�S�
LED UNTIL THE �MAG-PROBES�S� TIP ALMOST TOUCHES THE DEVICE
UNDER TEST BEFORE THE LED TURNS ON. NOW YOU�LL DETECT ONLY THE
DEVICE UNDER TEST. (IF YOU TEST LARGE SOLENOIDS AND RELAYS A
MAJORITY OF THE TIME, USE A STANDARD �MAG-PROBE� MODEL �S�.)
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ESTIMATING HIGH OR LOW VOLTAGES STANDARD SIZED
AND LARGER SOLENOIDS AND RELAYS ONLY |
(DON�T USE THE HIGH/LOW SENSITIVITY RING). WITH A LITTLE
PRACTICE YOU SHOULD BE ABLE TO DETERMINE IF A HIGH OR LOW
VOLTAGE CONDITION EXISTS. FOR EXAMPLE: AFTER TESTING A 12 VDC
SOLENOID VALVE SEVERAL TIMES, YOU NOTICE THAT THE �MAG-PROBE�
LIGHTS AT APPROXIMATELY THE SAME DISTANCE. (TEST THE SAME
POINT EACH TIME). THIS IS NORMAL IF THE VOLTAGE IS CONSTANT.
HOWEVER, IF THE �MAG-PROBE� LIGHTS AT EITHER A CLOSER OR
GREATER DISTANCE FROM THE DEVICE THAN NORMAL, THEN A VOLTAGE
CHANGE HAS OCCURRED. AN INCREASE IN VOLTAGE INCREASES THE
MAGNETIC FIELD. THUS, A LOW VOLTAGE WOULD DECREASE THE
MAGNETIC FILED. OF COURSE, THERE IS A CHANCE THAT A PERSISTENT
CHANGE HAS TAKEN PLACE WITHIN THE DEVICE UNDER TEST, BUT THE
ODDS (BY A LONG SHOT) FAVOR A VOLTAGE CHANGE.
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TESTING FOR RESIDUAL MAGNETISM
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IF YOU SUSPECT
THAT RESIDUAL MAGNETISM IS CAUSING A MALFUNCTION, INSTALL THE
HIGH SENSITIVITY RING ON THE �MAG-PROBES� PER INSTRUCTIONS FOR
HIGH SENSITIVITY. NEXT, TURN OFF THE POWER TO THE DEVICE UNDER
TEST. NOW FOLLOW THE PROCEDURE TESTING AC & DC DEVICES.
FIG. 2
IF THE LED TURNS ON, YOU�VE FOUND A RESIDUAL MAGNETIC FIELD.
TO BE DOUBLE SURE, REVERSE THE RING AND TEST AGAIN. (YOU MAY
HAVE A SOUTH POLE.)
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HANDY HINTS
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IF
CONTROL SWITCHES ARE BEYOND ARMS LENGTH, TAPE THE
�MAG-PROBE�S� TIP TO THE DEVICE UNDER TEST, OBSERVE THE LED AS
YOU CYCLE THE MACHINE. (MASKING TAPE WORKS WELL.)
IF THE DEVICE TO BE TESTED IS LOCATED IN AN ELECTRICALLY HOT
AREA, TAPE THE �MAG-PROBE� TO A WOODEN DOWEL OR OTHER
NON-CONDUCTIVE MATERIAL. NOW YOU CAN INSERT THE �MAG-PROBE�
DEEP INSIDE EQUIPMENT WITHOUT DANGER OF SHOCK. KEEP YOUR HANDS
AND ARMS CLEAR OF EXPOSED WIRE.
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REMEMBER:
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BEFORE TROUBLE
SHOOTING USING THE HIGH/LOW SENSITIVITY RING, PRACTICE
ADJUSTING YOUR �MAG-PROBE� FOR MAXIMUM SENSITIVITY. TRY IT ON
A SMALL PERMANENT MAGNET. GOOD TROUBLESHOOTING!
THE BLACK TUBE. LOCATED IN THE STORAGE BAG, SLIPS OVER
THE RED CAP AND SHIELDS THE LED FROM BRIGHT SUNLIGHT OR BRIGHT
INDOOR LIGHTS. |
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WWW.MAG-PROBE.COM
INVENTED & PRODUCED
BY
Bartol Research
P.O. Box 190881
Boise, ID 83719
Ph: (208) 321-7566
Fax: (208) 378-1282
E-mail: Magprobe@aol.com
Manufactured in the United States of America
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THE FOLLOWING
SPECIAL APPLICATION NOTE
ALTERNATOR & GENERATOR OUTPUT
CURRENT LEVEL TEST
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WAS WRITTEN FOR THE MOST TECHNICALLY QUALIFIED
USERS ONLY. WE�VE INCLUDED IT AS A BONUS, BUT DON�T GUARANTEE
POSITIVE RESULTS FOR ALL PERSONS. |
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