- SITRANS LR150 Radar level transmitter, Non-contact, 15 - (49.2 ft) range, for liquids and solids. - . Bluetooth function: Without Process connection: 1-1/2" NPT . Type of protection: Ex i (ia) (Ex-Zone 0/Class I, Div. 1 & Div.2) Electrical connection /cable entry: M20 Local HMI: With display (clear lid with plastic window of PC material) Ex Approvals and certificates (additional to type of protection): cFMus, cCSAus, ATEX, IECEx