5.2 The control head
The control head can provide a quick check of the
amount of available liquid in the tank. It includes the
following withdrawal, level reading and safety devices:
Figure 5-2: Overview of the control head.
Ref. Function
1. Mechanical level indicator.
2. Filling / withdrawing valve.
3. Filling/utilisation connector.
4. 0.5 bar valves.
5. Pressure gauge (internal pressure).
6. Venting /overflow valve.
7. Venting connector
8. Quick-release clamping ring
9. Leak proof seal.
A floating level indicator (1). The coloured part
shows the percentage of liquid nitrogen remaining.
A filling valve (2) and its connector (3) for
connecting to the supply tank connector or to the
supply line via a suitable flexible transfer line. This
valve (2) and its connector (3) are also used for
withdrawal (drawing liquid nitrogen off into another
vessel for use).
Two safety valves calibrated to 0.5 bar (4),
protecting the tank from any excess internal
pressure .
A pointing pressure gauge (5) indicating the tank's
internal pressure in bars (kPa). A red mark at 0.5
bars shows the maximum service pressure of the
TP
.
A venting and overflow valve (6) and its connector
(7).
A quick-release clamping rings (8) to fit the control
head on the storage tank flange.
A seal (9) that prevents any leakage between the
control head and the storage tank flange.
Refer to:
On page 12 for details of how these components
operate.
En On page 35 for the technical specifications.
5.3 Main accessories
These accessories are not supplied with the standard
version and must be ordered separately.
5.3.1 Dolly base
This base (1) can be firmly clamped to the tank and
enables it to be moved inside a building, making it
easier to negotiate uneven floors. It has five castors,
two of which have brakes.
Figure 5-3: Container mounted on the dolly base.
5.3.2 Hand rail
This removable metal accessory (1) makes it easy to
move the tank and also protects the control head. The
handrail (1) fastens on to two lugs mounted on the
tank handles.
Figure 5-4: View of the handrail mounted on a tank.
1
2
3
4
5
6
7
8
9
1
1
To Next Page
Loading...