In the process flow, the fluid first enters the feed box, where it is stopped and mixed by beams that obstruct the flow. A portion of the kinetic energy of the process flow is converted into static energy within the feed box. The conveyor gate controls the level and velocity of the process flow exiting the feed box. The flow velocity to the subsequent cutters should be at least 1.5 m/s, preferably above 2 m/s. The primary fixed cutter set cuts the samples after the process flow exits the feed box. The sample represents 10% of the total flow. After the fixed cutters, the bottom of the chute ends, and the remainder of the process flow continues towards the lower chute and exits from there. In three-stage samplers, the primary sample continues towards the sequence conveyor. In two-stage samplers, the primary sample proceeds directly to the movable cutters. The return chute, rotated at a 90° angle relative to the process flow, acts as a secondary feed box containing the second conveyor gate. The second conveyor gate regulates the flow of the primary sample to the secondary fixed cutters.
The secondary fixed cutter set cuts a secondary sample representing approximately 10% of the primary sample flowing through the sampler. The remainder of the primary sample flows from under the fixed cutters into a chute and exits from there. The movable cutter set cuts the final sample. The movable cutter set is operated by a pneumatic cylinder and controlled via an independent control system or plant automation system. The speed of the movable cutters and the frequency of cuts regulate the sample volume. Finally, the sample tank collects the final sample from the movable cutters. After each sampling operation, the sample tank and sample line are flushed with tank cleaning equipment to keep the sample line clean for the next sampling. If necessary, tank flushing can also be performed as a pre-wash before sampling. The main flush is to keep the movable cutters clean and prevent material accumulation. The main flush is performed as needed depending on process requirements.
Product Contents:
The Linear Multiple Sampler is made of the following materials:
- Mild steel (S235JR, thickness 6 mm)
- Sample collector body
- Natural rubber (NR Shore A50–60, thickness 5–20 mm)
- Interior of the sample collector is lined with natural rubber
- Other rubber grades available upon request
- Epoxy paint
- The exterior of the sampling device is coated with epoxy paint (3 coats)
- Nominal dry film thickness of the paint: 240 μm
- Color: According to customer request
- Stainless steel (AISI 316, EN 1.4401)
- Fixed cutting tools
- Movable cutting tool
- Sample tank
- Other materials available upon request
- Aluminum
- Cylinder