Glacier Transportable Sampler - Isco

More documents

Recommendations

Info

Glacier Transportable Sampler Section 2 Installation 1. 2. Figure 2-5 Attaching the suction line to the pump tubing Once the coupler is attached to the pump tube, removal is difficult, and may require cutting the tube. 2.8.3 Connecting PTFE Suction Line To connect the 3 /8-inch (9-mm) PTFE suction line to the pump tube: Items required: Suction line with strainer attached 3 /4-inch (19-mm) diameter hose clamp (plastic or stainless steel recommended) 1. Place a hose clamp on the upper pump tube. 2. Insert about 1 inch (25 mm) of the PTFE suction line into the upper pump tube. 3. Position the clamp over the joined area and tighten it. 2.8.4 Strainers The 3 /8 inch ID vinyl suction lines are shipped from the factory with our standard weighted polypropylene strainer (Figure 2-6) installed on one end of the suction line and a tubing coupling on the other end. Additionally, Teledyne Isco offers two low flow stainless steel strainers (Figure 2-7) for 1 /4 inch ID and 3 /8 inch ID suction lines. To install the low flow strainer in PTFE suction line, first heat the end of the suction line to make it more pliable, then carefully screw the threaded end of the strainer into the suction line. 2-12
Glacier Transportable Sampler Section 2 Installation For sampling from highly acidic flow streams, a weighted, CPVC plastic-coated strainer is available (Figure 2-8). The use of the strainer is optional. When heavy suspended solids are involved and flow stream velocities are significant, some field investigation results indicate that more representative samples are obtained without the strainer. You can purchase bulk suction line without strainers. Refer to the Accessories List in the back of this manual. The strainer prevents solid particles larger than a specific diameter from entering and clogging the suction line. Teledyne Isco recommends its use for bottom sampling or sampling from streams containing large solids. The 1 /4-inch strainers supplied for use with the 1 /4-inch ID suction line have 15 /64-inch (0.56 cm) diameter holes. The 3 /8-inch strainers supplied for use with the vinyl or PTFE 3 /8-inch ID suction line have 23 /64-inch (0.9 cm) diameter holes. 2.8.5 Intake Placement The proper placement of the sampler intake assures the collection of representative samples. Place the intake in the main flow, not in an eddy or at the edge of flow. The vertical position of the intake in the flow is important. An intake at the bottom may result in excess heavy solids and no floating materials, while placement at the top may result in the opposite. The suction line tends to float in deep flow streams, dislodging the line and strainer. Table 2-2 shows the maximum depths you can submerge the lines and strainers without risks of flotation. At depths exceeding the safe depths, anchor the line and strainer securely. The suction line should always be cut to the shortest possible length. Route the suction line so that it runs continuously downhill. Loops of coiled suction line or low areas where the liquid can pool will hold residual amounts of liquid that will cross-contaminate sample volumes. A consistent downhill slope will help eliminate air slugs in the line, increasing the sample-to-sample repeatability and accuracy. Note The suction line should maintain a consistent downhill slope to achieve the best sample-to-sample repeatability and accuracy. Strainer Table 2-2 Strainer/Suction Line Depths Vinyl 1 /4-inch (6 mm) Vinyl 3 /8-inch (9 mm) PTFE 3 /8-inch (9 mm) Standard Weighted Polypropylene Stainless Steel Low Flow — 22 feet (6.7 m) 15 feet (4.5 m) 14 feet (4.3 m) 22 feet (6.7 m) 15 feet (4.5 m) CPVC — 4 feet (1.2 m) 4 feet (1.2 m) 2-13
Page 1: Glacier Transportable Sampler Insta
Page 5 and 6: Glacier Transportable Sampler Safet
Page 7 and 8: Glacier Transportable Sampler Safet
Page 9 and 10: Glacier Transportable Sampler Table
Page 11 and 12: Glacier Transportable Sampler Table
Page 13 and 14: Glacier Transportable Sampler Secti
Page 21: Glacier Transportable Sampler Secti
Page 74 and 75: Glacier Transportable Sampler Appen
Page 80 and 81:
Glacier Transportable Sampler Appen
Page 82 and 83:
Page 84 and 85:
Page 86 and 87:
Page 88 and 89:
Page 90 and 91:
Page 92 and 93:
Page 94 and 95:
Page 96 and 97:
Page 98 and 99:
Page 100 and 101:
Page 102 and 103:
Page 104 and 105:
Page 106 and 107:
Page 109:
DECLARATION OF CONFORMITY Applicati
show all

Glacier Transportable Sampler - Isco

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?