Choke Position Indicator - Model 2200

The HDI System #2200 is a Electronic Choke Position Indicating System. The system consists of an electronic potentiometer housed in a stainless steel tube that is located in a stainless steel housing. 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). The display is a liquid crystal display (LCD), which includes both a three digit numerical display (for accuracy) and a bargraph (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.

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.

• Remote Display: Remote displays may be provided to allow secondary indicators at an alternate location at the customer's request.
• 4/20 mA Output: HDI offers as an option, a signal current loop providing a 4/20 mA remote output that may be used for chart recorder inputs and/or datalogging.
• 0-1VDC Output: HDI offers as an option, a signal providing a 0-1Vdc remote output that may be used by the customer for chart recorder inputs and/or datalogging. This is a factory installed option and does not require calibration.

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