5 Maintenance | Model 3000P | |
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LEAD AND POTASSIUM HYDROXIDE, THAT CAN BE HARMFUL IF TOUCHED, SWALLOWED, OR IN- HALED. AVOID CONTACT WITH ANY FLUID OR POWDER IN OR AROUND THE UNIT. WHAT MAY APPEAR TO BE PLAIN WATER COULD CONTAIN THESE TOXIC SUBSTANCES. IN CASE OF EYE CONTACT, IMMEDIATELY FLUSH EYES WITH WA- TER FOR AT LEAST 15 MINUTES. CALL PHYSICIAN. (SEE APPENDIX, MATERIAL SAFETY DATA SHEET.)
CAUTION: Do not disturb the integrity of the cell package until the cell is to actually be used. If the cell package is punctured and air is permitted to enter, the cell will require a longer time to reach zero after installation.
5.2.2 When to Replace a Cell
When the sensor in the 3000PA begins to fail, the analyzer usually requires more frequent calibration. If the 3000PA analysis readings drift downward uncharacteristically, try recalibration. If recalibration raises the readings temporarily, suspect the cell, but first check for leaks downstream from the cell where gases may be leaking into the system.
You can check the output of the cell itself by going to the System function, selecting More, and pressing Enter. The cell output reading will be on the second line of the display.
Version
Cell Output: ### µA
The “good” cell output range depends on the class of cell your ana- lyzer is using. The
Check Specific Model Information in the Front Matter in this manual for the class of cell you purchased. Then check Table
cell index table below, and do the simple calculation. If the resulting value is below the Cell Output reading, replace the cell.
To find out if your cell is too weak:
1.Flow span gas through the analyzer, and allow time to purge.
2.With span gas flowing, read the raw output of the cell from the System function display.
Teledyne Analytical Instruments |