Teledyne BDS-3960 operating instructions Electrolyte Refill of BDS Sensor

Oxygen Analyzer Installation

Table 3-4: Range ID Relay Connections

Pin Function

21Range 1 ID Contact

38Range 1 ID Contact

22Range 2 ID Contact

39Range 2 ID Contact

19Range 3 ID Contact

18Range 3 ID Contact

34Range 4 ID Contact (Over range)

35Range 4 ID Contact (Over range)

3.4Electrolyte Refill of BDS Sensor

The BDS sensor is shipped dry. It must be filled with the electrolyte before operation. The electrolyte is a caustic solution (10% KOH), supplied in five 50 ml bottles. Review the Material Safety Data Sheet (MSDS) in Section A-6 before handling the electrolyte.

To refill the BDS sensor:

1.Loosen the thumb screws on the front and slide the drawer halfway out.

2.Unscrew the sensor cap and disconnect sensor cable from the BDS sensor.

3.Pour the electrolyte from the five small bottles into a larger container.

4.Sparge the electrolyte with nitrogen gas at a flow of 100 CCM for about 1/2 hour then pour into the provided wash bottle.

5.Ref. to Figure 3.5 for the method of adding electrolyte to the sensor. It is important that as the sensor is being filled with the electrolyte, filling is accomplished without trapping gas bubbles in the lower part of the sensor.

6.Squirt electrolyte content into the sensor. Do it slowly until the bottom parts of the sensor are fully immersed in the electrolyte.

Teledyne Analytical Instruments 39