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34-ST-03-57
Page 10
Parameter Description
Pressure Equipment Directive
(97/23/EC)
The ST 3000 pressure transmitters listed in this Specification have no pressurized
internal volume or have a pressurized internal volume rated less than 1,000 bar
(14,500 psig) and/or have a maximum volume of less than 0.1 liter. Therefore,
these transmitters are either; not subject to the essential requirements of the
directive 97/23/EC (PED, Annex 1) and shall not have the CE mark, or the
manufacturer has the free choice of a module when the CE mark is required for
pressures > 200 bar (2,900 psig).
* See Figure 13 for Fill Fluid temperature limits.
** 2-inch Sanitary Seals are limited to 15 ft. (4.6 m) capillary length.
NOTE: Pressure transmitters that are part of safety equipment for the protection of piping (systems) or vessel(s) from
exceeding allowable pressure limits, (equipment with safety functions in accordance with Pressure Equipment Directive
97/23/EC article 1, 2.1.3), require separate examination.
NOTE: Lower flange seal should not be mounted over 22 feet below the
transmitter for silicone fill fluid (11 feet for CTFE fill fluid) with tank at one
atmosphere. The combination of tank vacuum and high pressure capillary
head effect should not exceed 9 psi vacuum (300 mmHg absolute).
Variable
Head
H1
LP Side
HP Side
ref. leg
H2
Fixed
Maximum level
Minimum level
.
Consult Honeywell for installation of STR93D
Figure 16—Typical mounting arrangement for ST 3000 Transmitter with Remote Diaphragm Seals