Teledyne BDS-3960 - Oxygen analyzer User Manual

Page 39

Oxygen Analyzer

Installation

Teledyne Analytical Instruments

Table 3-4: Range ID Relay Connections

Pin

Function

Range 1 ID Contact

Range 2 ID Contact

Range 3 ID Contact

Range 4 ID Contact (Over range)

3.4

Electrolyte 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.