Rosemount 2120D1DV1E1SM0010Q4 - 2120 Liquid Level Switch
 
Specifications
Communication Protocol: Direct Load, PLC/PNP, Relay, 8/16 mA, NAMUR
Process Media Density: Minimum 37.5 lb/ft3 (600 kg/m3)
Viscosity: 0.2 to 10000 cP (centiPoise)
Operating Pressure: Full vacuum to 1450 psi (Full vacuum to 100 bar)
Operating Temperature: -40 to 302 °F (-40 to 150 °C)
Safety: 
SIL2 IEC 61508 certified
TÜV tested and WHG approved for overfill prevention
Diagnostics Electronic: self-checking and condition monitoring