Geometrics G-822A, Руководство по эксплуатации

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Geometrics, Inc. G-822/G-823 Magnetometer Manual
13
6.0 TROUBLE SHOOTING
Operation of the G-822A is relatively simple and when trouble arises it is usually easy to
recognize and correct. Table 2. is a trouble shooting guide provided to help in quickly
locating the probable cause of the most common system problems.
Symptom Probable Causes Corrective Actions
Long warm-up time. Low voltage.
Low ambient temperature.
Faulty sensor cable
connection.
Low heater setting.
Defective internal sensor or
electronic components. Increase voltage (minimum 24 VDC at the
electronics) or repair the Coax cable.
Insulate sensor housing.
Disconnect sensor from electronics and
carefully clean the pins and sockets.
Adjust heater to 34.5 K-ohms: contact
factory for details.
Return sensor and electronics to Geometrics
for repair.
Noisy magnetic field
readings. Local field is noisy.
Sensor not oriented correctly.
Heater setting incorrect.
Signal amplitude too low with
correct orientation.
Sensor cable or connector
worn or damaged. Locate and eliminate source of noise or
relocate sensor.
Refer to Sensor Orientation section of this
manual, or use MagPick IGRF and CsAz
software to model magnetic field and sensor
behavior, and correct orientation if
necessary.
Adjust heater to 34.5 K-ohms: contact
factory for details.
Adjust signal amplitude or return sensor and
electronics to Geometrics for repair.
Replace sensor cable and connector
assembly. Check connector on electronics
bottle for wear and replace if required.
Sensor cable kinked or
cut. Handling or mechanical
problem. Change handling or mechanical mount.
Then replace sensor cable and connector.
Sensor connector
damaged or worn Handling, mechanical
problem, accident, or normal
wear. Correct handling or mechanical problem.
Then replace sensor cable and connector.
Excessive current
consumption. Damaged Coax cable.
Defective sensor or
electronics. Replace Coax cable.
Return sensor and electronics to Geometrics
for repair.
Preventing a problem is almost always less costly than correcting the problem. We
recommend checking the follow items as part of any new installation or whenever an
Table 2. Trouble shooting