BARTINGTON INSTRUMENTS
Page 10 of 13 OM2808/3
6. Troubleshooting
Your Mag628, Mag629 or Mag669 are unlikely to suffer any defects in normal use. Neither the
electronics nor the sensor head are user serviceable. As the sensor head and the electronics
assembly are matched, in the event of damage to either, return both to Bartington Instruments.
Mag628 and Mag669
customers should supply (details of) a mating connector to allow
Bartington to make connection between sensor head and electronics connector; otherwise the
customer’s connector will have to be permanently removed to allow servicing to be carried out.
The most likely causes of failure for Mag628, Mag629 and Mag669, and their solutions, are
detailed in the following table:
Function
Failure Symptom
Failure Cause
Failure Analysis/
severity and
solution*
Output signals for
one or more axes.
Output floats to
saturation (close
to supply rails).
Severance or
uncoupling of sensor
head to electronics
unit cable.
Major failure –
will immediately
be detected by
operator.
Output goes high
impedance.
Loss of
power to the
magnetometer.
Check connections
to sensor head
(Mag628, Mag629
and Mag669) and/
or voltages on
PL1 (Mag628 and
Mag669 only).
Ensure the cable
length is not too
long, causing
excessive voltage
drop between the
power supply and
magnetometer.
Refer to the
specifications
defined in the
product brochure.
Output becomes
0V.
Internal
component failure.
Return to
Bartington
Instruments for
servicing.
