I. Overview

　　SITRANS Probe LU240 ultrasonic level transmitter output signal.

　　4-20 mA HART, can be applied to level, volume, and open channel flow measurement.

　　It can measure liquid level, slurry and solid bulk materials.

　　2. Technical parameters

　　Measuring principle: ultrasonic level measurement

　　Measuring range: 1) 6 m type: 0.2 ~ 6m; 2) 12 m type: 0.2 ~ 12m

　　Frequency: 54 KHz

　　Output: 4 ~ 20 mA /HART communication

　　Accuracy: ±0.15% of range or 6 mm [applicable to the range above 0.25 m]

　　Repeatability: ≤ 3 mm

　　Blind area: 0.2 m

　　Refresh time: ≤ 4 s

　　Temperature compensation: built-in

　　Beam angle: 10°

　　Relative humidity / protection level: suitable for outdoor

　　Installation level: 1) Storage temperature range: -40 ~ +85°C (-40 ~ +185 °F);

　　2) Operating temperature range: -40 ~ +80 ℃ (-40 ~ +176 °F)

　　Material (housing): PBT (polybutylene terephthalate)

　　Protection level: IP68

　　Weight: 0.93 kg (2.1 lb)

　　Cable entry: 2 x M20 x 1.5 cable gland or 1 x½" NPT thread

　　Sensor material: ETFE or PVDF, nitrile rubber sealant

　　Operation interface: 1) On-site: LCD display; 2) Remote: Via HART

　　Configuration: 4-button LCD display

　　Memory: EEPROM, can save information when power is off, without battery

　　Power supply: 4 ~ 20 mA/HART 10.5 ... 30 V DC

　　Certification: Universal: FM, CSAUS/C, CE, KC, RCM