Model 268 is certified by the IEC 61508 TUV secure 2600T transmitter, for attention to safety and operability of the SIS and the key areas. Through the use of software and hardware redundancy method, 268 can be installed in the compound SIL2 (1001) and SIL3 (1002) Structure of the occasion.
268-safe transmitter than the requirements of IEC 61508对SIL2, where the hardware fault tolerance fault for the day F D = 1, safe failure fraction of 98.6%, 97.7% diagnostic coverage. HFT = 1 to ensure that even in the event of a hardware failure, the transmitter is still operating with the security features. In addition, the following requirements are part of the certification process:
- Function Security (hardware / software) test
- 电气安全测试 - Electrical Safety Testing
-EMC test