Geometrics Memory-Mag G-856AX, Руководство по эксплуатации

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Geometrics, Inc
.
G-856AX Operation Manual
35
Maintenance
Instrument storage
When not in use, disconnect the sensor cable from the magnetometer console. We
recommend storing all the components in the shipping case to help prevent magnetic
contamination of the sensor or other system components. If the magnetometer system
will be stored for a long period, remove the batteries to prevent electrolytic leakage or
corrosion of the contacts.
DO NOT REMOVE THE LITHIUM BATTERY.
The lithium
battery is soldered into the circuit board and will maintain data and system memory in the
absence of the operating batteries. The recommended storage temperature for maximum
battery life is 40°F (4
°
C). If you wish to store batteries for a long time, do so in a
refrigerator. If batteries are stored in a refrigerator, wrapping the cells in a plastic bag
will prevent condensation from collecting on them. After removing bagged batteries
from refrigeration they should be allowed to warm up in the bag before being used.
Voltage indicator
After the READ key is pressed and before the magnetic field reading is displayed, a
number indicating battery voltage appears in the FIELD/TIME display. The indicator
will display BATT and a number showing the battery voltage. This number is the actual
battery voltage present under load. That is, the battery voltage is measured during the
polarize cycle of the magnetometer.
When operating from internal D-cell batteries, the maximum voltage will read around
13.5 Volts. Regardless of the battery type, when the indicated voltage reaches 8.2 Volts
the magnetometer will stop polarizing. Under this condition the "Low Batt" message will
be displayed and the batteries should be replaced or recharged.
If you continue to use batteries that have discharged below 8.2 Volts, the magnetometer
may not respond to keyboard commands. Also, complete and accurate data retrieval
cannot be assured if the batteries do not hold a sufficient charge. See the chapter on Data
Retrieval for details.
If the G-856AX is powered from an external source the battery indicator may indicate a
voltage higher than the 13.5 Volts. The maximum displayed voltage is 19.9 Volts and
maximum recommended input voltage is 13.8 Volts.
Batteries
There are two kinds of batteries in the G-856AX. Basic operation is powered either by
nine (9) internal D-cell batteries or by an internal rechargeable Gel-cell battery pack. A
lithium battery that is soldered to one of the console’s circuit boards powers the
magnetometer’s clock and internal memory. This lithium battery maintains clock and
memory functions when the main batteries are disconnected or discharged.