I have a LakeShore 450 Gaussmeter. When I turn the Gaussmeter on, with the probe attached, it constantly reads an OL on the field reading despite being in a no magnetic field environment and being on Auto range. Below is a list of things I have done to trouble shoot.
-Reset to factor settings by holding the escape key -Turned auto range off and manually set the range -turned off an on -changed the mode (AC/DC)
None of these changes have helped.
I am wondering if the probe it self is broken (it seems undamaged) or if the gaussmeter is broken (again seems undamaged). I inherited this probe from another lab and I have no idea what it has been through. Any help of the potential issues or additional trouble shooting would be highly appreciated.
Post by Lake Shore Jeff M on Jul 3, 2018 7:12:40 GMT -5
The issue you are reporting can be due to a defective probe or an internal issue in the Model 450 Gaussmeter.
The first thing I suggest you do is measure the resistance between pins 1 & 9 and pins 8 & 15 on the probe connector. You should see a reading of approximately 2.7 Ohms and if you see more than 4 ohms, the probe is defective and you will need to order a new probe.
If you see the correct reading, then the probe and Model 450 will need to be returned to the factory for analysis. If this is the case, please contact [email protected] and provide them with your contact information as well as the model and serial number of the probe and the serial number of the Model 450.
Post by Lake Shore Jeff M on Jul 3, 2018 11:39:33 GMT -5
Based on this test, you will need to return the Gaussmeter and probe so we can determine which is bad. Most likely it is the probe, however, the only way to know for sure is to purchase a new probe or return both so we can perform an analysis.