Noncontact Ultrasonic Level Sensor For Media Type Film-Causing Solid/Semi-Solid Liquid Sticky Liquid Antenna Diameter 1 in Range 6 ft Connection Size 1 in Connection Type NPT Accuracy +/-0.25 Percent of Full Scale Voltage - Maximum 30V DC Dead Band 4 in Beam Angle 12 Degrees Operating Frequency 148 kHz Spatial Resolution 0.03 in Operating Pressure - Maximum 72.5 psi Media Temperature - Minimum -40 Degrees F Media Temperature - Maximum 140 Degrees F