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Advanced calibration continued...

After the initial calibration sequence and before attempting a prolonged measuring session, the 
following sequence is advised. The purpose is to perform a calibration only once the probe has reached 
a stable temperature. 
Hold the probe in your hand in the same way as you would while measuring. Important, do not envelop 
the entire probe in your hand, simply hold it just as you would while measuring. Your hand will heat the 
probe It may take 3-5 minutes for the probe to reach a stable temperature. 
Then perform a re-calibration, by pressing the FUNCTION key and choosing the Re-Calibrate option.

You can also perform a Re-Calibration at any time should you feel the need. Take care to keep the 
environmental temperature stable and avoid direct exposure to fans or heater vents. 

Additional Information.

There is an additional information source provided by menu option 1 called 

Ref. 

It is important to 

understand the significance and objective of this option before using it. The 

Ref

 option can be 

engaged by pressing FUNCTION ^1.
Firstly, the initial calibration procedure, will compensate for differences between your shop 
environment and the factory environment where MAG-ic Probe was calibrated. The problem is that 
after this calibration your hand may heat the probe causing a small drift in value. This is the reason 
for the 2nd calibration as described above. To assist in this 2nd calibration, the 

Ref

 option can be 

used.
BEFORE performing the 2nd Calibration, invoke the 

Ref

 option. The 

Ref 

(reference) option shows a 

value, normally a negative value, for example -53. This value represents a difference measured in 
the conditions of your environment to the factory environment where MAG-ic Probe was calibrated. If 
this value is negative as in the example -53, hold the probe in your fingers as described above. The 

Ref

 value should start to increase, and the zero (0) point is where the probe temperature conditions 

are similar to the factory calibration conditions.
When the 

Ref

 value is approaching the 0 mark, return to the menu and perform the 2nd calibration 

as described above. Please note that you do not have to be overly fussy about this setting as even a 
difference count of 300 represents well under 0.1mm deviation. 

Summary of Contents for V4.0

Page 1: ...lds are strong at the magnet surface and deteriorate rapidly in a non linear manner as distance increases Ÿ Magnetic fields will vary with changing temperatures Ÿ Magnetic and most other sensors are unstable and vary their output with changing temperatures Ÿ Friction may cause the inner magnet to not be centered on the probe tip when moving the probe across the measured object Considering the abov...

Page 2: ...be engaged by pressing FUNCTION 1 Firstly the initial calibration procedure will compensate for differences between your shop environment and the factory environment where MAG ic Probe was calibrated The problem is that after this calibration your hand may heat the probe causing a small drift in value This is the reason for the 2nd calibration as described above To assist in this 2nd calibration t...

Page 3: ...rts currently installed on your pc Look for the USB Serial Port COM and note the port number If you double click this line you should see a similar properties window as below right In the above example COM 3 is the port that will be used when we connect to the MAG ic Probe Software If a driver is not automatically installed Please return to the website and click on Document and Driver Downloads Do...

Page 4: ...utton to see the available ports The Serial port should be identified as something like USBmodem or USBSerial etc Pick this option and then click on the small box to the right of this line This box will provide the full detail of the Port Name In this example it is Usbmodem411 but each computer will be different The full name is dev cu usbmodem411 Make a note of this full name as you will need it ...

Page 5: ...ssful you will be prompted to re attach the magnet and press function key This completes the initial calibration and MAG ic Probe is ready to perform your measurements The display should read 0 00 when the magnet is attached to the probe If the advanced calibration is required perform it now see Advanced Calibration HOLD Function MAG ic Probe features a HOLD mode to assist you in obtaining accurat...

Page 6: ...uring instrument you want to equalize the 2 instruments by adding or subtracting a value The OFFSET value is set in mils 1 1000th inch Please remember to set the offset back to zero when completed for normal measures Press 2 for OFFSET followed by either 2 for negative decrement or 4 for positive increment Re Calibration Press 4 for Re calibration This will restart the complete initial calibration...

Page 7: ...unit when not in use to conserve battery life Ÿ Take care of the magnets they are fragile and will shatter or splinter if allowed to snap onto each other or metal objects Ÿ Ensure your instrument does not contain any metallic objects to which the internal magnets can be attracted Removing a magnet from a finished instrument can be difficult Ÿ Do not drag the probe across finished surfaces Either l...

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