Hach Lange 2100AN, Инструкция по эксплуатации инструмента

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60
SECTION 5,
continued
5.2.4 High Pressure Flow-Cell Kit
The High Pressure Flow-Cell Kit can be used for continuous measurement of a
process stream, and accommodates up to 414 kPa (60 psig) (see Figure 12). It can
operate continuously in temperatures up to 30 °C (86 °F), and intermittently in
temperatures up to 40 °C (104 °F). All wetted parts are fabricated from materials
approved by the United States Food and Drug Administration (FDA), and can be
steam sterilized.
Prepare the High Pressure Flow Cell as follows:
Note: Hand-tighten the
compression fitting nuts. Excessive
force may damage the fitting or cap
assembly.
1. Connect
1
/
4
" O.D. tubing (of appropriate lengths for sample-in and sample-out
connections) to the inlet and outlet fittings on the cap assembly as described in
steps 1, 2 and 3 of Figure 13. The Flow-Cell cap fittings are compression
fittings suitable for
1
/
4
" O.D. polyethylene, metal, glass or clear vinyl tubing.
Clear vinyl tubing requires an internal tube support. Step 4 of Figure 13
describes the method for removing tubing from this type of compression
fitting (shown in the cross-section drawing in Figure 14).
Figure 12 High Pressure Flow Cell
Figure 13 Compression Fitting Connection
Step 1
Cut the tube end at a
slight angle for easy
insertion. Debur metal
or glass tubing to
prevent O-ring damage
and to promote ease of
assembly Step 2
Loosen the nut on the
fitting until about three
threads are visible.
Moisten the end of the
tubing with water or
other suitable lubricant. Step 3
Insert the tube into the
fitting until the tube
bottoms on the fitting
shoulder. Hand-tighten
the nut. Additional
tightening is not
necessary. Step 4
Cut the tube off behind the
nut to reuse the fitting
internal parts. Pull the
parts off the tube stub end
backwards. Replace the
parts in the fitting body.
Assemble the nut, and
insert the new tubing
(as in Step 3).