Teledyne BDS-3000 - Oxygen analyzer - Manual (Page 44)

Installation BDS 3000
Teledyne Analytical Instruments 30
Squirt electrolyte content into the sensor. Do it slowly until the
bottom parts of the sensor are fully immersed in the electrolyte.
4. Pour the rest of the electrolyte into the sensor. Gas bubbles in the
top portion of the sensor would not affect the sensor
performance. One bottle of electrolyte is sufficient to rise the
electrolyte level to the MAX line. For the rest of sensor life, no
further electrolyte addition is needed.
5. Install the sensor cap,
6. Do not connect the sensor's electric connector at this stage.
3.5 Testing the System
Before plugging the instrument into the power source:
• Check the integrity and accuracy of the gas connections.
Make sure there are no leaks.
• Check the integrity and accuracy of the electrical
connections. Make sure there are no exposed conductors
• Purge the system for 3 minutes. Make sure the gas flow rate
is within 0.5-1 SLPM.
Power up the system, and conduct the Self-Diagnostic Test as
described in Chapter 4, Section 4.3.5. It takes two minutes for the
microprocessor to test various sections of the analyzer.
3.6 Sensor Protection Mode
The BDS sensor is a very sensitive device for measuring ultra trace
levels of oxygen. When the oxygen level in the gas exceeds 100 ppm (in
nitrogen background) for one minute, the analyzer will enter a self-
protection mode and show temporary shut down on the display. It
indicates a high level oxygen intrusion into the system. Check the gas
line and other related parts, and fix them if there is any leaks found.
The analyzer will try to reconnect with the sensor in one minute. If
it is still over range for one minute, the analyzer will enter a temporary
shut down mode again for three minutes. The analyzer will try the third
time to reconnect the sensor, and will enter a System Shut Down mode
to protect the sensor if it is still over range.
Pressing the ESCAPE key will return the analyzer to operation.