Teledyne BDS-3960 Maintenance Routine Maintenance, Adding Water to the BDS Sensor

Maintenance BDS 3960

Maintenance

5.1 Routine Maintenance

Aside from normal cleaning and checking for leaks at the gas connections, routine maintenance is limited to refilling sensor with deionized water, replace burned fuses, replace backup batteries for PPC, and recalibration. For recalibration, see Section 4.4 Calibration.

WARNING: SEE WARNINGS ON THE TITLE PAGE OF THIS MANUAL.

5.2Adding Water to the BDS Sensor

When running dry gas through the sensor, water is extracted from the electrolyte. Therefore, the electrolyte level should be checked periodically. When the electrolyte level is low, only de-ionized water or distilled water should be added into the sensor. It typically takes about four months to dry the electrolyte from the MAX line to the MIN line when the sensor is operated on a bone dry gas line.

It is not necessary to turn off the power to the analyzer while adding water, but care should be taken that no water is splashed outside the sensor. Spilling water on the PC board could cause serious damage to the analyzer and electric shock to the personal.

Unscrew and take the sensor cap off. Use the wash bottle provided to squeeze de-ionized water into the sensor, as shown in Figure 5.1. It is a good practice that water is added before reaching the MIN line.

Reinstall the cap after adding water.

Teledyne Analytical Instruments 58