Siemens SITRANS Probe LU is a 2-wire loop-powered ultrasonic transmitter for level, volume, and flow monitoring of liquids in storage vessels and simple process vessels, as well as in open channels. The transducer is available as ETFE (ethylene-tetrafluoroethylene) or PVDF (polyvinylidene fluoride) to suit the chemical conditions of your application. For applications with varying material and process temperatures, the Probe LU incorporates an internal temperature sensor to compensate for temperature changes.

Continuous, non-contact, up to 12m (40 ft) range. With optional PROFIBUS PA. Enclosure/Cable Inlet: Plastic (PBT), 2 x 1/2" NPT (no cable glands supplied) Range / Transducer material: 6 meter (20 ft), PVDF Copolymer Process Connection: 2" NPT ((Taper), ANSI/ASME B1.20.1) Communication / Output: 4-20mA, HART Approval: General purpose, FM, CSA, CE, C-TICK, KCC.

SITRANS Probe LU uses field-proven Sonic Intelligence ® signal processing.

Features:

• Output Current Rating - 4-20mA


• Sensing Input Type - Two Probe


• Controlled Materials - Conductive Liquids


• Operating Temperature - -40 to 80 deg C (-40 to 176 deg F)


• PROFIBUS PA communications


• Programming via PC software or infrared handheld programmer


• IP68 rated


• Level, volume, and flow measurement


• PVDF or ETFE transducer for chemical compatibility

Applications:

Level, volume or flow

SITRANS Probe LU is designed to measure levels of liquids in a variety of applications:

• storage type vessels
• simple process vessels with some surface agitation
• liquids
• slurries
• open channels

Volume

By using the volume parameters (P050 to P055) you can obtain the measurement as volume instead of level.

Flow

If you have an open channel system (a Parshall flume, v-notch weir or other open channel device), you can obtain flow values instead of level. By using the universal linear function of parameter P051, and entering values for Head and Flow in the breakpoint parameters P054 and 055, you can use SITRANS Probe LU to convert head levels into flow rates.