Teledyne 6600 manual Pressurized Inlet Sample Delivery

Part III Model 6600

(CONSULT COMMISSIONING/STARTUP PROCEDURE SEC- TION IN THE ADDENDUM).

PRESSURIZED INLET SAMPLE DELIVERY

In the case of a high background process stream, the sample is delivered to the sample cell through the homogenizer/deaerator then SV3 (N.O.) directly to the measuring sample cell for analysis or to the autozero section filter assembly section before passing through the sample cell. The return must go to a 5 psig lower pressure point suitable for maintaining a good dynamic response of the system as well as providing sufficiently high enough flow to the sample cell in order to maintain some self-cleaning action minimizing periodic cleaning of the cell assembly. All standard sample handling compo- nents selected to contact the process fluid are rated for up to 150 psig (10.5 kg/cm2g). Any pressures higher than this could cause failures and pose an unsafe condition. It is the customers responsibility to assure the inlet(s) nor return point(s) do not exceed 150 psig.

In the case of a clean stream, only sv2 and sv1 are used for zero purposes and are N.O. to allow sample to return to a lower pressure point. This return point must be at least 10 psig lower than the inlet takeoff (when no pump is used); otherwise no flow will occur through the system.

NO PRESSURIZED INLET FOR SAMPLE DELIVERY (PUMP REQUIRED)

When no sample pressure is available either the customer or TAI will have provided a suitable pump for the delivery of the process fluid.

GRAVITY FEED SYSTEM (Suitable on clean water application only) For gravity feed systems, the user must provide sample from a suitable head so as to continuously deliver sample through the highest internal sample system point of the TAI sample system based upon its commisioned intended location. The gravity return point must also be suitably below this high point so as to render sufficient continuous flow through the system.

CALIBRATION SAMPLE DELIVERY

On each side of the sample cell, v5 (before cell) and v6 (after cell) 3-way valves (followed by v7 an adjustable safety needle valve to a grab safety port) are placed so as to allow gravity fed entrance of calibration fluids prepared with the calibration kit (A48715). Sample is blocked off by these valves and calibration samples prepared can be poured into the zero/span in calibration reservoir and allowed to flow through the sample cell while

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