BARTINGTON INSTRUMENTS
Page 17 of 20 OM0382/9
7. Troubleshooting, Care and Maintenance
7.1. Troubleshooting
Special equipment is required for the diagnosis of faults within the unit. Much of this equipment
is beyond the scope of normal service facilities. Therefore, in the event of any apparent
malfunction, please email
service
@
bartington.com
or telephone the Bartington Instruments
service team on +44 (0)1993 706565. Attempted repair or opening of the casing by users in a
manner or for reasons other than given in the manual may invalidate the warranty.
A re-calibration service is available which is traceable to international standards.
7.2. Checking the System
7.2.1. Battery Check
Connect the battery charger to a live supply. The charge indicator on the magnetometer should
illuminate.
After 10 to 20 minutes, switch on the magnetometer. The battery voltage is shown for a few
seconds at switch-on and should be between 6.5V and 7V.
Disconnect the battery charger. Switch the magnetometer off and on again. The battery voltage
should not be less than 6V.
7.2.2. Functional Check
Set the sensitivity switch to x1. Vary the orientation of the probe with respect to the direction of
the Earth’s magnetic field. The LCD should respond with changes in sign and magnitude.
Orientate the probe so that the LCD indicates some low value, e.g. approximately 5nT (+0.005µT).
Momentarily select x10 sensitivity. The LCD should respond by disp0.050. Alternatively
select ±30µT using the offset control. The LCD should respond by ±30 µT.
7.2.3. Over-range
If the magnetic field reading is above the maximum range of the display a 1 will be displayed. It
may be possible to use the negative offset option to bring the value back into a range that can be
displayed on the LCD.
Should the cable fail due to fatigue or damage, the LCD will always read as if over-ranged.
