The LST400 is an ultrasonic level transmitter capable of measuring liquid level or solid applications up to 15 m (50 ft.) or flow rates in all types of open channel flow applications. The transmitter has a single 4 to 20 mA DC analog output with HART 7 and five (5) relay outputs. A transducer is fitted to the top of a silo or tank, facing down towards the material being measured.
The ABB LST400 is an ultrasonic level transmitter designed for measuring liquid levels or solid applications up to 15 meters (50 ft), as well as flow rates in open channel applications. It features a single 4-20 mA DC analog output with HART 7 protocol and five configurable relay outputs. The device utilizes a transducer fitted to the top of a silo or tank to measure the time of flight of an acoustic pulse reflected from the material surface.
| Range | 50 ft. / 15 m |
|---|---|
| Output | 4-20 mA with HART 7 |
| Relay Outputs | 5 Configurable Relays / 8 Amp |
| Accuracy | 0.25% full span |
| Display | 128 x 64 dot graphic display |
| Power Supply | 110 VAC or 240 VAC |
| Enclosure Rating | IP65 |
It is suitable for various liquids including water storage tanks and moderate range solids such as loading and bagging hoppers.
The transmitter can be configured for V-Notch, Flumes, and Weirs.
Options include cable lengths of 10 m, 20m, 30m, 40m, or 50m.