Eclipse® 705 in critical applications

The Eclipse® 705 is type approved for steam drums, EN 12952-11 (water tube boilers) and EN 12953-9 (shell type boilers) as “primary safety” and “secondary safety”. Combined with a 7MS probe the device can be used in saturated steam applications at a pressure of 155 bar at an equivalent temperature of 345°C.

Additional diagnostic tools allow the user to integrate this transmitter into highly demanding safety instrument loops. With a Safe Failure Fraction (SFF) of 91% the device scores amongst the highest – if not the highest – safety levels.

It is possible to install two or even three Eclipse® devices on one external cage for specific applications. Even when installing only two devices in one cage a SIL3 safety level can be obtained. Adding a third device to the same cage assures continuity to the production process. The three obtained individual level signals increase the overall reliability.

A typical example for such an extreme safety application can be found in the power generation sector where accurate monitoring of water levels in steam drum and boilers is a must. It is a challenge maintaining constant liquid level in the upper part of the drum in order to provide the proper quality of steam. Instrumentation must withstand high temperatures and pressures.