The Kongsberg GT402 E and GT402 F (also known as GT402 LNG) are the replacements for the Autronica GT402 LNG. The Kongsberg GT402 E and GT402 F are Pressure Transmitters for LNG vapour pressure. They are designed for the custody transfer of LNG, which requires monitoring of vapour pressure. The GT402 LNG can be used in hazardous areas in combination with the AL-100 signal converter or the GLK-100 radar processing unit, which both have integrated zener barriers. A DZ-110 Zener Barrier can be used to obtain intrinsic safety.