Honeywell SmartLine, User Manual

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3. Installation
3.7. Mounting Summary
22 SmartLine Wireless User's Manual Revision 2
Remote Diaphragm Seal Mounting Information
The combination of tank vacuum and high pressure capillary head effect should not
exceed nine (9) psi (300 mmHg) absolute. For insulated tanks, be sure to remove enough
insulation to accommodate the flange extension. The end user is responsible for supplying a
flange gasket and mounting hardware suitable for the service condition of the Transmitter.
Mount the transmitter flanges within the limits in for the fill fluid in the capillary tubes, with
a tank at one (1) atmosphere.
Table 3-4: Flange Mounting Guidelines
Fill Fluid
Mount the Flange…
Silicone 200 Oil <22 feet (6.7 meters) below the Transmitter
Chlorotrifluoroethylene (CTFE) <11 feet (3.4 meters) below the Transmitter
Refer to
Figure 3-11 for a representative remote diaphragm seal installation. Mount the transmitter at a remote
distance determined by the length of the capillary tubing.
Figure 3-11: Representative Remote Diaphragm Seal Transmitter Installation