GSi GSS-U, Руководство пользователя

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2.2 Optional Features
The certified drawings indicate which, if any, optional features are included with a sampling system. Some of the
more frequently specified optional features are briefly described in the following list.
A. Controller arranged to initiate a sampling cycle based on quantity or volume of material passing through
conveying line rather than upon elapsed time periods.
B. Explosion-Proof Sampling System. There are several major differences in an explosion-proof sampler as
compared to a standard sampling system. An explosion proof sampler will typically have the following
features.
1. An explosion-proof clutch solenoid with the rating of: (Std, furnished on all GSS-U samplers)
Class 1, Groups C & D, Division 1 & 2
Class 2, Groups E, F & G, Division 1 & 2
2. An explosion-proof limit switch with the rating of: (Std, furnished on all GSS-U samplers)
Class 1, Groups C & D, Division 1 & 2
Class 2, Groups E, F & G, Division 1 & 2
3. An explosion-proof motor with the rating of: (Optional)
Class 1, Groups D, Division 1 & 2
Class 2, Groups E, F & G, Division 1 & 2
The explosion proof sampler control is available in two enclosure classifications.
1. The NEMA 9 control with the rating of:
Class 2, Groups E, F & G, Division 1 & 2
2. The NEMA 7 control with the rating of:
Class 1, Groups C & D, Division 1 & 2
Class 2, Groups E, F & G, Division 1 & 2
C. Components of special materials, such as 316 stainless steel, monel, inconel or nedox coatings.
D. Programmable Controls to sequence the sampler and the sample collection equipment.
2.3 Material Sampled
Most materials from light to heavy density powders, granules, flakes and pellets.
2.4 Sampler Construction
Standard sampler housing construction is of painted cast aluminum. The sample auger & auger tube are of type
304 Stainless Steel. The auger is machined from a solid bar (no welds on flights) and hand polished. The
sanitary GSS-U sampler design allows for quick removal of the auger and auger tube for easy clean-out and
washing. Other materials and/or finishes appropriate to the operating environment and the material or product
being sampled may be used. Refer to the certified drawing(s) for any optional or special components installed on
the sampler.