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4.3.3 Installing the In-line Filter
Note: Rinse out sample system
before startup to prevent "crud
bursts" from clogging new filters.
4.3.4 Connecting the Measuring Cell to the Transmitter
4.3.5 Choosing the Sample Line Location
Note: Erratic readings will occur if a
sample is drawn from a location that
is too close to points of chemical
additions to the process stream, if
mixing is inadequate, or if the
chemical reaction is incomplete.
Figure 7
Sample Line Location
Poor
4.3.6 Connecting the Inlet Tubing
4.3.7 Connecting the Outlet Tubing
1. On the back of the panel, connect ¼ in. tubing to the elbow fitting on the top of
the measuring cell (see
2. Connect the other end of the tubing to one end of the filter. Make sure that the
filter is oriented with the arrow pointing up.
3. Connect another length of ¼ in. tubing to the bottom of the filter. Connect the
other end of the tubing to the elbow fitting on the right side of the pressure
regulator.
Insert the female end of the sensor connector into the 4-pronged connector at the
bottom of the measuring cell.
Selecting a good, representative sampling point is important for optimum
performance of your instrument. The sample analyzed must be representative of
the condition of the entire system.
Install sample line taps into the side of larger process pipes to minimize the
chance of ingesting sediment from the pipe line bottom or air bubbles from the top.
A tap projecting into the horizontal center of the pipe is ideal.
Air (Typical)
Sediment (Typical)
Poor
1. Choose the sample line location as described above.
2. Connect the ¼ in. O.D. tubing to the lower left elbow fitting on the Pressure
Regulator as shown in
On the back of the panel, connect the
the back of the measuring cell. The tubing must not exceed 4 ft and it must drain
straight down.
Figure
8).
Good
Figure
8.
3
/
-inch outlet tubing to the barbed fitting on
8
Installation
Best
13
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