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Levelstate - Model ELS 300+ - ...

Levelstate - Model ELS 300+ -Electronic Level Switch (ELS)

FromLevelstate Systems Ltd

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Levelstate ELS 300 provides a reliable and cost effective means of sensing water/steam level in high pressure/temperature applications. Pressure parts available upto 207 bar at 370? as standard (optional: super-critical). With detection upto 4 channels (optional: upto 8 channels) in Type 300+, the installed cost per detection point is appreciably lower. ELS NANO (single channel) is an effective and economical replacement to the float type level switch.

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Choice of 1-8 channels depending on site requirement
Available for pressure rating upto 207 bar (3000psi)
Dual power supply with 100% redundancy and power supply failure indication (AC/DC)
Self diagnostic features to detect open-circuit/short-circuit/probe contamination/internal component/ ground failure
DPCO high capacity relays in each channel with energized/de-energized option
Adjustable time delay output
Both co-incidental and vertical validation available
Remote display unit available (optional)
Available for hazardous zone (explosion proof ) and super-critical application

The technology uses resistivity discrimination between steam and water to provide indication
Detection level is dependent on water purity and operating conditions i.e. temperature and pressure
Sensing element is a Probe with an insulated tip inserted in a side-arm Water Column/Probe Insert. Voltage is applied to the tip: conduction occurs between the tip and the inside wall of the Column/Probe Insert
Resistance <0.1M Ohm indicates water i.e. Probe is immersed in water. Similarly, resistance >0.1M Ohm indicates steam i.e. Probe is in steam.
An electronic discrimination circuit is used to discriminate the Probe resistance and generate the display logic accordingly