Teledyne 6600 manual Part I, Oil in Water Analyzer, Operation, Zero Cal, 3.4.1.1Auto Mode Zeroing

Oil in Water Analyzer Operation 3

Note: Shut off the gas pressure before connecting it to the analyzer, and be sure to limit pressure to 40 psig or less when turning it back on.

Readjustthegaspressureintotheanalyzeruntiltheflowratethroughthe

Sample Cell settles between 50 to 500 cc/min (approximately 0.1 to 0.4

SCFH).

Note: Always keep the calibration gas flow as close to the flowrate of the sample gas as possible

3.4.1 Zero Cal

TheZero function on the main menu is used to enter the zero calibration function.Zerocalibrationcanbeperformedineithertheautomaticormanual mode.

Make sure the zero fluid is flowing to the instrument. If you get a CELL CANNOT BE BALANCED message while zeroing skip to section 3.4.1.3.

3.4.1.1Auto Mode Zeroing

Observe the precautions in sections 3.4 and 3.4.1, above. Enter the zero function mode. The screen allows you to select whether the zero calibration is to be performed automatically or manually. Use the UP/DOWN switch to toggle between AUTO and MAN zero settling. Stop when AUTO appears, blinking, on thedisplay.

Select zero mode: AUTO

Enterto begin zeroing.

####.## ppm OIL Slope=#.### C—Zero

The beginning zero level is shown in the upper left corner of the display. As the zero reading settles, the screen displays and updates information on Slope= in percent/second (unless the Slope starts within the acceptable zero range and does not need to settle further). The system first does a coarse zero, shown in the lower right corner of the screen as C—Zero, for 3 min, and then does a fine zero, and displays F—Zero, for 3 min.

Then, and whenever Slope is less than 0.01 for at least 12 sec, instead of Slope you will see a countdown: 9 Left, 8 Left, and so fourth. These are

Teledyne Analytical Instruments Part I 3-17