Setra System Model 528 - Manual (Page 4)

* The pressure transducer has no means of draining or venting, this must be performed by
another component in the end users system.
* Pressure range must be compatible with the maximum pressure being measured.
* Pressure media must be compatible with the transducer wetted parts listed in
these instructions.
* Liquid must not be allowed to freeze in the pressure port.
* The gasket must be fitted under the electrical connector.
MECHANICAL INSTALLATION
Mounting : Pressure Transducer is designed to be attached by the coupling thread only. Omni-
directional, self supported directly into the piping. Use a 19mm AF (3/4") wrench on the hexagon
provided to apply a maximum torque of 11.6 lbf-ft (15.8Nm).
The Customer must ensure that the
pressure seal is suitable for the application. If in doubt contact Setra Systems.
ELECTRICAL INSTALLATION
All types with the CE Mark include suppression devices providing transient protection to EN 61000-4-2
and EN 61000-4-4. Conformity with the requirements of the CE mark only applies when connection is
made with Setra Systems approved cable, see APPROVED CABLE section, and is connected with the
shield of the cable grounded at the instrumentation end. If a 'Ground Loop' problem is encountered
when the body of the unit is grounded by the piping it is permissible to remove the cable shield from the
instrumentation ground.
APPROVED CABLE
For units supplied without cable, Setra Systems can supply a cable, Part Number 496687, comprising 6
color-coded wires, enclosed by an aluminized polyester shield where the shield is in contact with a
separate drain wire. The outer sheath and wires are capable of operating at 125°C. Alternative cables
can be employed but these must be fully shielded and capable of operating at the application
temperature.
OPERATION
Having installed the transducer as instructed, it is ready for use. The transducer should not be removed
while the system is at pressure. Before applying power, check that the correct polarity and excitation
levels are being applied. See Table 1 for electrical connections.
CALIBRATION
Transducers are calibrated to the datum requested at time of order; this can be identified as follows:-
Code A - Absolute datum
Code G - Gauge datum vented to atmosphere via the electrical connector or cable
Code C - Compound Datum