Mounting The De-Bubbler; Set Up Procedure For; Optional De-Bubbler - ABB 4670 Series User Manual

2.3.7 Mounting the De-bubbler – Fig. 2.13
For use with the Model 7997 201.
150 CRS
Ø6.5
Important Note.
The de-bubbler MUST
be mounted vertically with
the flow upwards.
Removable fitting
To Fit 12 mm i.d. Tube
Fig. 2.13 De-Bubbler Mounting Information
(Debubbler Part Number 7997 500)
Caution.
To ensure adequate flowrate through the
sensor, it is recommended that the De-bubbler
unit is installed at least 0.5m above the sensor
outlet. This may need to be increased where
long or smalll bore tubing is used.
= Optional
(7997 201
Systems)
Fig. 2.14 Typical System Installation for 7997 200 Series and 7997 300 Flow Systems
91
88
Drain Outlet
Disconnect
Fittings
to suit 12 mm
540 i.d. tube
(rotatable
through 360  )
Sample Outlet
Sample Inlet
Important Note
The de-bubbler MUST be mounted
vertically with the flow upwards.
De-bubbler
Drain
Outlet
Tundish
Valve (A)
Flow Regulator
Valve
Sample in
2 MECHANICAL INSTALLATION
2.3.8 Set Up Procedure for Optional De-bubbler –
Fig. 2.14
With a system which includes a de-bubbler, set it up as follows:
1) Open the 'sample in' isolating valve (A) such that the
overflow from the de-bubbler is at a minimum.
2) Adjust the sample flow through the turbidity system using the
regulating valve (B).
Note. Sample regulating valves together with a flow
indicator are recommended to ensure easy maintenance
and consistent performance. These devices are not
supplied with the 7997 Turbidity Monitoring system.
Caution.
To prevent degassing of the sample, which can cause
very erratic readings, it is recommended that these
measurements be not greater than 150mm.
.
Minimise height
to avoid syphoning
effect
7997 200 Series
Inlet/Isolating
Valve
Valve (B)
Flow Regulator Valve
4670
4675
Sample Outlet
Connector
Minimise height
to avoid syphoning
effect
Drain
Tundish
11