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 2 Systems Description:
2.1 Systems Description:
The HDI 2200 System is an Electronic Position Indicating System. The system consists of three
(3) primary components as detailed in Section 2.2. An electronic potentiometer is housed in a
stainless steel housing based on your specific choke body. The assembly is adjustable inside the
housing to assure the sensor is located properly. The housing(s) are constructed to adapt to a
variety of choke(s): Shaffer/NOV, Cameron, Swaco, Control Flow, Cortec and others as required.
The display is a liquid crystal display (LCD), which includes both a three digit numerical display
(for accuracy) and a bar-graph (101 segments) representation (for trend).The electronic bar graph
display indicates choke position from closed to open, 0 - 100 percent and in 1/8 graduations.
Dependent on choke body, your LCD may be configured to be shown as percent (%) Closed versus
the traditional percent (%) Open.
2.2 System Components:
2.2.1 Position Indicators:
Two (2) Position Indicators with numeric and Bar Graph displays are used for dual applications for
respective Left / Right Choke or Choke / Kill identification; otherwise, a single display system is
used for Single Choke applications.
2.2.2 Position Sensors:
As noted above, HDI has designed several different sensor housings to be compatible to various
choke styles to reduce onsite customization and to simplify installation after removing the existing
pneaumatic sensors. General dimensional drawings or photos are available upon request.
2.2.3 Cables:
All interconnecting cables supplied by HDI or can be adapted to use junction box for open
termination.
2.3 System Capacities:
2.3.1 Position Indicators:
Choke Position Indicators are rated for 0 to 100 percent or in one-eighth graduations and will be
respective of your choke body orientation for Open or Close .
2.4 System Options:
Custom designed systems will include, per the customers' request or customers' specifications,
certain options required to meet offshore area classifications or specific customer requirements.
Each system of this type will be designed to meet specific requirements or classifications and is
therefore unique and as such goes beyond the scope of this publication. Barriers or explosion
proof junction boxes are not required as the system has been certified intrinsically safe by the
Canadian Standards Association (CSA). The following are common examples that may be
encountered or requested by customers. HDI offers the following options at additional cost.