Configurable displacer transmitter
03 September 2009
The modernised, digital E3 Modulevel from Magnetrol is an intrinsically safe two-wire instrument utilising simple buoyancy principle to detect and convert liquid level changes into a stable output signal. The transmitter has modernised packaging, increased functionality, diagnostics, and the capability to configure the transmitter. The E3 Modulevel supports Foundation fieldbus, HART, AMS, FDT/Pactware communication protocols.
Configurable displacer transmitter on the market
The E3 Modulevel is believed to be the only displacer transmitter on the market with a SFF of 92.3% making it suitable for SIL2 safety loops. The additional diagnostic tools allow the user to integrate this transmitter into highly demanding safety instrument loops.
The E3 withstands process temperatures and pressures up to +315 °C / 355 bar, handles liquids with an S.G. as low as 0.23 and up to 2.2, and liquid/liquid interfaces with a minimum density difference of 0.10 kg/dm³.
The E3 Modulevel uses a precision range spring. The spring reduces the friction of moving parts and provides natural damping. The result is a more reliable and stable output even when the liquid surface is turbulent. Because an LVDT offers twice the travel of a typical RVDT (Rotatable Variable Differential Transformer), the accuracy/linearity of a spring-operated displacer transmitter is superior to traditional torque tube designs.
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