BARTINGTON INSTRUMENTS
Page 22 of 32 OM2020/5
7. Repair and Maintenance
This section describes procedures for testing the Mag-01H D/I system, and for carrying out field
adjustments to maintain full accuracy. Procedures for mounting the probe on the theodolite are
included. Maintenance procedures are restricted to probe cable test and repair, and replacement
of the Mag-01H battery.
Beyond this, no repair or servicing is possible with the Mag-01H D/I system. When service or
maintenance is required, contact Bartington Instruments. However, a full calibration service is
offered by Bartington Instruments, together with optional certification at an observatory.
Caution:
The theodolite is not suited to operation under very wet conditions. If a theodolite
has become wet then it should be wiped carefully and the container must be opened
as soon as possible to allow the instrument to dry out completely. Never leave a damp
theodolite in a closed container.
Caution:
Rough handling should be avoided as the bearing journals in this type of
theodolite are manufactured from phosphor bronze and are not as strong as those
manufactured in steel.
7.1. Checking the System
7.1.1. 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. See also
.
7.1.2. 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.
7.1.3. Theodolite Optical Check
Eliminate optical errors. For the correct procedure, refer to the
.
Summary of Contents for Mag-01H
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