Mag-Probe Specifications Applications

Mag-Probe Industry Applications:

Bartol Mag-Probe Conducting a Test Aircraft Maintenance  Food Processing  Nuclear & Conventional Power Plants – Chemical Processing Commercial Trucks – Printing Companies – Military, Cargo, & Cruise Ships Construction Equipment  Trains – Hospital Equipment – Sterile Environments – Clean Rooms – Integrated Circuit Manufacturing  Underwater Applications  Oil Exploration Equipment – Sewage Disposal & Treatment Plants – Military – Farm Machinery – Space – Alignment of Magnets – Elevator – Machine Shops – Heavy Equipment  Bottle Processing Plants – Oil – Gas – Refineries


3 Gauss.  1 Gauss with HS Ring Magnet attached to the tip. (See Instructions) (Mag-Probe will Test sub-miniature and smaller solenoid valves and relays, to the largest solenoid valves and relays on the market today)

 DE Sensitivity:

Mag-Probe has a white de-sensitizing white cover for the tip that will reduce sensitivity to avoid over lapping magnetic fields when testing larger solenoid valves and relays.

 LED Indicator:

LED lights up under red cap when a magnetic field is present.

Operating Frequency:

Dc to 400 HZ

Shelf Life:

Retains 95% of its Operating Capacity after 10 years

Operating Life:

5000 Five Second Tests

Relative Humidity:

Salt and Moisture Proof Can be used Underwater up to 30 ft.


Safe to use in a Vacuum

Operating Temperature:

-80° F to +160° F

Self Function Test:

Test Ring Magnet Included in Cap – Can also be used to increase sensitivity by adjusting ring magnet on the tip – See Instructions

Power Supply:

Lithium Battery


Length 3.5” x  Width .75”


3 Oz.

mag probe


 Special Note:

Bartol Mag-Probe can be used in any Environment and is Completely Sealed and Intrinsically Safe to use in Gas & Oil Pipeline Industries.  It can also be used: Underwater, in a Vacuum, and in all Clean Rooms ISO 9000 Certified.


Advantages of the Mag-Probe:


  • SPEED Isolates problem as mechanical or electrical in seconds. Provides confirmation of the electrical field immediately.  When Magnetic Field is detected, so is “current, continuity, and voltage.”

  • NON-CONTACTNo Direct Connection is needed

  • SCHEMATICS No need to follow schematics to isolate the terminal strip

  • SALT & MOISTURE PROOF Continues to work effectively in or around ocean salt spray, extremely humid environments and underwater.

  • INTRINSICALLY SAFE Can be used in all explosive environments in gas and oil because it is a completely self-contained sealed unit.

  • COMPOSITE The composite allows the Mag-Probe to be sterilized using a cold process

  • SELF-CONTAINED Because it is a sealed self-contained unit the Mag-Probe can be used underwater “Water Proof!”

  • VACUUM – The Mag-Probe Operates in vacuum

  • NO ELECTROSTATIC FIELD – The Mag-Probe composite generates no electrostatic field

  • LOCATES RESIDUAL MAGNETISM – Can detect residual magnetism on solenoid valves and relays or raw metal stock as low as one gauss with the HS sensitivity ring magnet attached

  • DETECTS TRANSIENT PULSES – Detects transient pulses and momentary loss of power as low as 10 milliseconds

  • IDENTIFIES NORTH & SOUTH POLES – By turning the ring magnet around the Mag-Probe can be used when checking magnetic north and south poles

  • PREVENTS LOADING OF COMPUTER DRIVERS – Prevents loading of the computer output drivers

  • OPERATES IN EXTREME WEATHER CONDITIONS – The Bartol Mag-Probe has been tested and worked effectively from -80°F to +160°F

  • MAG-PROBE CAN CONDUCT TESTS WHILE EQUIPMENT IS FULLY OPERATIONALOne of the biggest advantages when using a Mag-Probe is the ability to check solenoid valves and relays while equipment is operating.  This enables technicians and mechanics the ability to find intermittent problems with solenoid valves and relays while the equipment is running. (Safety Permitting)

  • BARTOL MAG-PROBE REQUIRES NO CALIBRATIONNo calibration of this test instrument is required.  A test ring magnet is in the cap for making a self test and to insure the Mag-Probe is fully functional.  The ring magnet can also be used to increase the sensitivity from 3 gauss to 1 gauss for testing very small solenoid valves, relays, and reed relays.


To Order the Bartol Mag-Probe from a Catalog Click Here

Or Call Bob Bartol (208) 321-7566

 Bob Bartol LinkedIn Profile


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About the Author
Bob Bartol has spent his whole life working with electronics in almost every capacity and spent many hours in Physics classes. He currently holds 4 U.S. patents and has been making a living off one of the patents "The Bartol Mag-Probe" for over twenty years. Bartol Research's Mag-Probe now has a global reach and is dramatically reducing trouble shooting downtime anywhere a solenoid valve. relay, or contactor is used. F111 Air Force Projects - European Flight Competition January 1968 Bob attended electronics school in the Air Force. Upon graduation he was assigned to a fighter wing in Germany. During his assignment he prepared seven aircraft for European competition. The fighter wings aircraft won the competition. Bob then returned to the United States and taught advanced radar for two years. Two years later, he returned to Europe. During this assignment, Air Force headquarters Europe selected Bob to open a Precision Measuring Equipment Laboratory (P.M.E.L) in England. It was the first of its kind in the Air Force. Upon his return to the United States, Air Force headquarters assigned Bob to Air Force research command in Florida. This was strictly a scientific assignment for research and development. After three years he moved from Eglin AFB in Florida to Edwards Air Force Base in California where he had direct contact with the National Bureau of Standards and supported research and development aircraft. During this assignment, he designed a modification for the TF X fighter (F-111). This modification made possible an additional 9800 flying hours per year. The F111 was the first swing wing aircraft in history. General Dynamics completed the modification prior to acceptance by the U.S. Air Force. Modification of F111 Aircraft General Dynamics March 1968 As a result of increasing this flying time Bob Received an award from Edwards Air Force Base for Increasing flying time of the F111 by 9,800 hours per year. The Award was Presented by Colonel Grumbles to TSGT Bob Bartol on June 17, 1968

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