Installing The Dissolved Oxygen Flowcell; Flowcell Dimensions (Overall)7; Enclosure Dimensions (Optional); Connecting The Sample Lines - ABB 9438 User Manual

2.3 Installing the Dissolved Oxygen Flowcell

2.3.1 Flowcell Dimensions (Overall) – Fig. 2.7
Dimensions in mm.
140
100
85
Ø 5.5
for M5 fastener in
four positions
Fig. 2.7 Flowcell Dimensions
2.3.2 Enclosure Dimensions (Optional) – Fig. 2.8
Dimensions in mm.
Ø 8.5
for M8 fastener in
four positions
Dissolved Oxygen 9438
25 200 25
160 mm space required below sensor
panel, to allow for the opening of the
optional environmental cover.
Fig. 2.8 Enclosure Dimensions
142
approximately
116
approximately
Secure the enclosure to a
vertical surface using the four
fixing holes and suitable
screws/bolts.
440
325
25
160
2 MECHANICAL INSTALLATION
2.3.3 Connecting the Sample Lines – Fig. 2.9
Mount the flowcell vertically (with or without the enclosure) as
shown in Figs 2.7 and 2.8. Connect the sample inlet and outlet
tubes as shown in Fig. 2.9.
Note.
• The sample flowrate must be between 100 and
400 ml min –1 .
• The Company recommends that stainless steel tubing is
used for sample inlet lines.
• All sample drains should be kept as short as possible and
be vertical to allow the sample to drain freely.
Flow Gauge
(ml/min)
Needle
Valve
(to set flow
rate)
Solenoid-
operated
Valve
Solenoid
User supplied
10 mm i.d.
rubber tubing
Sample drain during
automatic calibration
Note. Drain tubes must be straight and
vertical to allow the sample to flow freely.
Fig. 2.9 Connecting the Sample Lines
Sample
Outlet
User supplied
10 mm i.d.
rubber tubing
Sample
Drain
Sample inlet via
shut off valve if
required.
1 m maximum
Sample
Outlet
Drain – see
Note
5