BARTINGTON INSTRUMENTS
Page 7 of 11 OM2298/3
7. For each of the three (X, Y and Z) axes in turn:
a. Connect a voltmeter to the axis sensor outputs.
b. Whilst monitoring the voltmeter readings, align the magnetometer with the
terrestrial field until the maximum voltage value is determined.
c. Confirm the measured readings approach the local geomagnetic field value.
Note:
Geomagnetic field values can be provided by your local magnetic observatory. A
margin of error due to local disturbance should be taken into account.
4.4. Mounting Recommendations
Each magnetometer has a set of mounting holes to allow attachment to a stable base or fixture.
Refer to the mechanical drawings on the product page.
Caution:
(For the Mag648S and Mag649S only) Take care to align the cable to the connector
correctly, to avoid damage to the connector or magnetometer. When aligned correctly,
hand tighten the connector. Refer to the product brochure for detailed information.
Note:
Other versions of the Mag648 and Mag649 have plug-in type connectors.
The sensor can also mounted on the Bartington Instruments Mag-TA Universal Tripod Adaptor.
See brochure DS3140, available from Bartington Instruments, for instructions on how to do this.
4.5. Post Installation Testing
1. Site the magnetometer, and install the power supply and cabling.
2. Switch on the power supply and wait until the magnetometer has stabilised. Refer to the
product brochure for warm-up times.
3. Confirm no magnetic objects are moving in the vicinity.
4. Monitor the sensor outputs.
5. Confirm that the vector sum of the measured magnetic field vectors is similar to the
expected local earth field.
Note:
When in a magnetically stable environment the outputs from the sensor should
remain stable to within the quoted noise limits. Refer to the product brochure for the
expected values.