Teledyne 9700 instruction manual Initial Calibration and Equilibration

4 Operation Model 9700

The Micro-Fuel Cell is supplied separately in a controlled atmosphere package and must be installed prior to startup. To install the cell, use the following procedure:

Note: Do not open the sealed package until the system is to be started and a flue gas sample is available .

(1)Make sure that the RANGE switch is in the OFF position (power “off”).

(2)Locate the cell holder assembly (white unit on the back plate assembly) and withdraw the cell probe from its holder, using a twisting motion. Remove the cap by unscrewing counterclock- wise (CCW).

(3)Open the cell package and remove the shorting clip .

(4)Place the Micro-Fuel Cell in the probe with the gold colored sensing surface facing toward the outside, and the printed circuit contact end facing the contacts inside the probe body. Replace cap previously removed (refer to instructions in the cell box).

(5)Insert the cell probe back into the probe holder bv pushing it in with a slight twist until the the probe strikes bottom.

4.1.4 Initial Calibration and Equilibration

Before stable, reliable operation can be achieved, the Micro-Fuel Cell requires a period of time to adjust to its new environment. When observing the integral meter, this period of time will appear to be about 15 minutes.

In actuality, however, true stability is not achieved for many hours, which can be demonstrated by recording the output on a circular chart recorder, then analyzing the results of the first 24 hours of operation. The user will note a few percentage points of drift covering a period of hours after the initial first 15 minutes of equilibration.

If speed is of the essence, TBE/AI suggests that the instrument be placed in service atter it appears to have stabilized (usually about 15 minutes), and the slight instability of the ensuing hours tolerated. Any error incurred during this period will be eliminated during the first operational calibration.

4-2 TELEDYNE BROWN ENGINEERING

Analytical Instruments