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Density Converter (Gas)
The density converter application accepts inputs from Sarasota density meters, temperature and pressure transmitters, and an unassigned input enabling a variable to be connected as an input to the Customer Defined Function (look-up table).
The converter calculates line (measured) density from the density meter period output and uses it together with temperature and pressure readings to derive density at reference conditions and calculate specific gravity and other density related variables.
This instrument is compatible with a wide range of density meter pulse outputs, including millivolt signals, reed switches, Namur proximity switches and pulse trains via its smart front-panel program selection.
Calculations
The line density calculations are based on accurately measured average period of pulses coming from density meters such as Sarasota Industrial Density Meter FD910, etc. A variety of calculations are available to suit the nature of the gas and the measurement conditions. The calculations are valid for the vapour phase of a gas.
Equations Of State:
• Ideal Gas
• Redlich-Kwong
• Soave-Redlich-Kwong
• Peng-Robinson
Features
Pulse Input for Density
Temperature and Pressure inputs for density conversion to reference conditions
Conversion based on a variety of General Gas equations
Customer Defined Function (look-up table)
Versatile User Input available on main menu
Selection of second language and user tags
RTC logging with over 1000 entries
4-20 mA retransmission
RS-232, RS-485 (optional) and infra-red serial ports
Modbus RTU, Printer and other serial port protocols
Front panel adjustment of 8-24V DC output voltage
Backlit Display Typical plant diagram
Downloads
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