The AccuTrak AT100 and AccuTrak AT200 high accuracy, magnetostrictive liquid level transmitters have been certified to IEC 61508 safety standard for operation in SIL 2 (Safety Integrity Level 2) environments. They help reduce risk at the process measurement level when implementing Safety Instrumented Systems (SIS) in process plant environments, such as chemical plants, refineries, and power plants. The AccuTrak AT100 is a high accuracy, magnetostrictive level transmitter that can be directly inserted into the medium to be measured; the AccuTrak AT200 is an externally mounted, non-contact transmitter that can be attached to a magnetic gauge to form a complete level measuring system. They can be used to measure clean or dirty fluids, and total level, interface level, or multiple levels from the same sensor. The transmitters provide accurate level measurements even with widely varying pressures and temperatures: up to 207 bar or 427°C.