Hach SD900, Основное руководство пользователя

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Confined spaces are not designed for human occupancy. Confined spaces have a restricted entry
and contain known or potential hazards. Examples of confined spaces include manholes, stacks,
pipes, vats, switch vaults and other similar locations.
Standard safety procedures must always be obeyed before entry into confined spaces and/or
locations where hazardous gases, vapors, mists, dusts or fibers can be present. Before entry into a
confined space, find and read all procedures that are related to confined space entry.
Mechanical installation
Site installation guidelines
D A N G E R
Explosion hazard. The instrument is not approved for installation in hazardous locations.
Refer to the guidelines that follow for the site location evaluation.
• Obey all the safety precautions if the sampler is installed in a confined space. Refer to Confined
space precautions on page 8.
• Make sure that the temperature at the location is in the specification range. Refer to Specifications
on page 3.
• Install the sampler on a level surface or hang the sampler with the suspension harness, the
support bracket or the spanner bar. Refer to Install the sampler in a manhole on page 9 and to
the applicable installation documentation.
• As near the sample source as possible to decrease analysis delay. Refer to Plumb the sampler
on page 12.
• For limitations on transport velocity and maximum vertical lift, refer to Specifications on page 3.
Install the sampler in a manhole
Install the sampler above the sample water in a manhole. Install the sampler with a spanner bar or a
support bracket. Install the spanner bar inside the manhole. The spanner bar is supported by
pressure against the walls. The support bracket has the same width as the manhole cover. Install the
support bracket directly below the cover for support.Refer to the expanded manual on the
manufacturer's website.Refer to the documentation supplied with the accessories to install the
sampler.
Install the distributor or full-bottle shutoff (optional)
The distributor or full-bottle shutoff assembly is typically installed at the factory. Refer to the
distributor or full-bottle shutoff documentation for installation.
Prepare the sampler
Clean the sample bottles
Clean the sample bottles and caps with a brush, water and a mild detergent. Flush the containers
with fresh water followed by a distilled water rinse.
Install a single bottle
Use a single bottle to collect one composite sample. When the bottle is full, the full bottle shut-off
stops the sample program.
1. Clean the sample bottles. Refer to Clean the sample bottles on page 9.
2. Install the sample bottle as shown in Figure 3 .
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