Dynisco IPX II Series, Operating Manual

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4.1 Construction ....................................................................................................................... 22
4.2 Description of Functions ...................................................................................................... 22
4.2.1 Theory of Operation ............................................................................................................ 23
4.2.2 Mechanical ......................................................................................................................... 23
4.2.3 Electrical ............................................................................................................................ 24
4.1 4.1 4.1 4.1 4.1 C C C C C
O N S T R U C T I O N O N S T R U C T I O N
O N S T R U C T I O N O N S T R U C T I O N O N S T R U C T I O N
The PTs of series IPX II are industry standard.
The main advantages are:
• Intrinsically safe EEx ia IIC T4
• temperature compensated
• HART protocol based
• resistance to aggressive media
• insensitivity to electromagnetic radiation (EMC)
• liquid-filled transmission system (mercury)
• pressure measurements in plastic melt up to a temperature of 350°C
4.2 4.2
4.2 4.2
4.2 D D
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ESCRIPTION ESCRIPTION ESCRIPTION ESCRIPTION ESCRIPTION O F O F O F O F O F
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The Dynisco IPX II Series of Smart Pressure Transmitters are microprocessor based instruments that
incorporate advanced software techniques and modern sensor design. New, proprietary sensor
processing methods ensure the highest quality and reliability to meet Dynisco’s standards.
The IPX II Series is designed for applications that require high accuracy, even under wide variations
in process temperature. With the capability for up to 6-to-1 span turndown, one pressure range can
be used in several different applications, reducing spare parts inventory. And the IPX II Series’ remote
digital communication utilizing the industry standard HART protocol allows transmitter parameter
changes to be made from safe areas, increasing operator safety.
The IPX II Series of Smart Pressure Transmitters are characterized for process temperature effects,
providing an optional linearized stable, temperature reading via 4-20 mA output. Figure 4-1
illustrates the operation of the transmitter in the form of a block diagram. The process temperature
signal is available through the HART protocol. An optional dual LCD will display pressure or
temperature measurements in real-time.