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Part III: 1-35
Oil in Water Part III
Teledyne Analytical Instruments
Warning: Do not operate the “ultrasonic homogenizer” in the
instrument for more than one (1) minute without a
liquid sample properly flowing through the
homogenizer.
Homogenizer Tuning
Follow the procedure in the manual for the homogenizer set up. The final
factor power settings obtained for a 200 ccm flow rate on this system (EPA#2
oil in demineralized water) was estimated at 600 pot dial or 60% power
(approx. 50 watts being used). To arrive at the field calibrated power homog-
enizer value based upon the unit being calibrated with the customer crude oil in
process water, the homogenizer will have to be recalibrated in the field since the
power setting will be different for the customers oil and water than for what TAI
calibrated it for using EPA#2oil in demineralized water at the 200 ccm flow rate.
A representative collected process sample is pumped through the analyzer
that has been field calibrated using the cal kit blender, etc., (p/n A48715) as
outlined in this manual. This collected sample of process water is again blended
for two minutes the same as the calibration samples and entered into/through the
calibration reservoir through the sample cell. The reading is noted/recorded and
thereafter, the homogenizer power level on the same process fluid (within a short
time period from a steady state sample coming in) is tuned to the same reading
as the blended sample reading recorded value. The homogenizer instrument
power level is again recorded for this 6600 unit. Note the flowrate through the
homogenizer is also recorded. (It should typically be recorded while the flow is
controlled at 200ccc for any future calibrations. (This flow rate will give the most
acceptable response times through the system).
CORRELATION
5.7 System Set-Up For Automatic Operation
5.7.1 Set-up for Automatic Sampling
After calibration with prepared samples, the system must be prepared
for automatic sampling.
1. Insure that sample delivery system was checked per Section 5.4.
2. Close the utility water supply valve used for external sample
line flashing.