Eclipse 705 two-wire guided wave radar transmitter has received the exida certificate for a “SIL 3 Capable” device according to the IEC61508 : 2000 Parts 1-7. This means in practice that combining two devices in a 1oo2 set-up is in line with SIL 3 loop requirements. We like to put emphasis on” loop requirements” since it has to do with an entire installation, not only one device.
The higher the SIL (Safety Integrity Level), the greater the impact of a failure and the lower the failure rate that is acceptable. Assigning a SIL level is thus based on the amount of risk reduction that is necessary and/or requested to maintain risk at an acceptable level. To determine SIL in the process industry, one needs to consider the entire control loop. In order to be able to do so each device in this loop needs to have a safe failure fraction, one of the important device factors that needs to be calculated. It will be the total of all these different values that determines the obtained SIL level.
In addition to this SIL rating the radar transmitter also has several agency approvals (e.g. ATEX, Lloyds, TÜV, FM/CSA,…).
