HDI 2200, User Manual

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HDI 2200 Position Indicator
User’s Manual – 2200, Rev 3 | JAN 2020
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SECTION 3 Installation:
3.1 Components Location:
3.1.1 Control Head and Sensors:
The Control Head and Sensors are to be mounted by the Customer at the locations deemed most
suitable for such equipment. The system transducer (POTENTIOMETER) comes from the factory
as a complete assembly and only requires mounting of the transducer housing using standard
practices for such installations.
3.1.2 Cables:
All wire lengths from the Panel to the sensors shall be supplied by the customer. Prefabricated
cables from HDI typically have the 3 Pin Male / 3 Socket Female connectors for quick installation.
3.2 Mounting Hardware:
Sensor integration to the choke bodies will generally use the existing bolts from the pneumatic
sensors once removed, while the HDI sensors will be complete with all necessary hardware or
adaptive stems as required for Swaco Rotary Sensors. Custom fit ups are available as option by
HDI.
3.3 Position Sensor Assembly and Standard Installation:
3.3.1 Assembly General:
The Position Potentiometer and mounting brackets are provided to replace an existing pneumatic
regulator choke position system presently in use.
This assembly is designed to mount in the original choke position enclosure utilizing the existing
hole patterns and mounting hardware. Remove the existing choke position assembly. Install the
new stainless steel housing and potentiometer assembly with mounting brackets with the existing
mounting hardware.
Standard Linear Potentiometer,
Loosen the potentiometer brass mounting brackets to allow for adjustment. With the choke body
in the fully closed position, adjust the cylinder potentiometer assembly to allow 1/8” to 1/4"
compression of the shaft into the potentiometer housing and tighten the bolts on the brass
mounting brackets. Observe the choke bodies and sensor while you Open the Chokes to assure
the potentiometer does not bottom out inside the cylinder housing. Once you confirmed there is
no issues, you may proceed to Calibration, see Section 5.
Rotary potentiometer:
HDI provides an adaptive shaft (for Swaco) that must be threaded into the existing choke shaft via
the adjustment stud. As part of the initial set up for a rotary sensor, the potentiometer is marked
with the active span for proper installation and orientation. Orientation to Clockwise and
counterclock-wise operation is critical to avoid crossing into the dead span of the potentiometer,
which will cause a spike or erratic reading on your LCD. Once you believe you have orientated
the Rotary potentiometer to match Clockwise and Counterclock-wise orientation, gently tighten the
set screw on the brass mounting block to secure the potentiometer assembly from rotating during
operation.