BARTINGTON INSTRUMENTS
Page 11 of 13 OM2808/3
Test signal:
PL1 pin 9 (Mag628
and Mag669) or
J1 pin J (Mag629)
usually pulled up
through a resistor
to a positive
voltage, e.g. 10k to
+5V.
Test pin is high
impedance when
OK; sinks up to
10mA to GND/0V
when fault is
detected or unit is
not powered.
Severance or
uncoupling of
sensor head to
electronics unit
cable.
Major failure –
will immediately
be detected by
operator.
Loss of
power to the
magnetometer.
See above.
Internal
component failure.
Return to
Bartington
Instruments for
servicing.
7. Care and Maintenance
No user repair or servicing is possible. For further details refer to the section on
.
7.1. Cleaning the Mag628, Mag629 and Mag669
Use water and mild soap to remove grime from external surfaces.
Caution:
Never use chemicals, such as solvents, when cleaning the sensor head or Mag629
enclosure.
Caution:
Take particular care when cleaning around electrical connections. Bent or
damaged pins may cause the magnetometer to malfunction. Use an air duster to blow out
dust and debris if required. Use appropriate PPE, such as eye protection, when carrying
out this task.
7.2. Calibration
Return the Mag628, Mag629 or Mag669 to Bartington Instruments for calibration at the
recommended intervals. Refer to the Calibration Certificate for further details.
