Manual

52
7.7 Heating and insulation
There are several ways of heating the meter. In most cases heating is unnecessary as the
meter is designed as such that very little heat is lost or gained through the outer cylinder.
Insulation
Where insulation is required a variety of materials may be used to insulate the meter. Care
must be taken not to insulate the meter above the halfway mark of the electronics support post
as shown in the illustration.
Electrical Heating
Electrical tape heating may be used. Care should be taken to only heat the sections where the
best effect will be achieved. Do not heat above the converter mount centre line as shown.
Liquid / Steam heating jacket
The meter can be supplied with a heating jacket. This jacket is designed to minimise the differ-
ential stress across the meter where differences in temperature between outer cylinder and
measuring tube exist.
The connections to the heating jacket are NPT or Ermeto sockets.
It is recommended that reinforced flexible hoses be used to connect the heating jacket to the
heat source
1 Max insulation depth
2 Heated Areas
3 Do NOT heat this area
Size
Dimension 2 (mm)
Titanium Hastelloy, SS 318 & Tantalum
10 50 -
15 65 65
25 120 75
40 150 150
50 200 125
80 410 225
1
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