Features and benefits
Range up to 8m/12m
6 mm range accuracy
Easy remote operation, diagnosis and adjustment with KEY/LCD or PC
Low processing power
Capable 2-wire, loop powered, intrinsically safe
inner temperature compensation to ensure accuracy of measurement
Non-contact measurement
Easy mounting via 1¿÷ NPT
Low cost

Application
Continuous, non-contact level measurement in fluids, pastes, sullies and coarse bulk materials

Characteristics
Measuring Range Solids applications: 4m/6m (transducer dependent)
Liquid applications: 8m/10m (transducer dependent)
Measuring Resolution 2mm
Accuracy 0.25% of range or 6mm, whichever is greater
Max. Pulse Frequency 43.5KHz
Operating Temperature -20..+80í+
Operating Pressure 0.7..3 mbar
Power Supply 15..30V
Power Consumption 51 mW ... 800 mW
PCB Size Driver board(Ñ+:84mm), Main CTL board(Ñ+:80mm)
PCB Material FR4
LCD Size 128*64dot

Description
ANL-4012 Ultrasonic Level Measurement Instruments use sound waves to determine level. A piezoelectric crystal inside the transducer mounted on top of the tank converts electrical pulses into sound energy that travels in the form of a wave at the established frequency and at a constant speed in a given medium. The sound waves are emitted in bursts and received back at the transducer as echoes. The Ultrasonic Level Measurement Instrument measures the time for the bursts to travel down to the reflecting surface and return. This time will be proportional to the distance from the transducer to the surface and can be used to determine the level in the tank.

Ultrasonic systems are accurate within a range of approximately 8m. A typical installation
consists of two parts:
A Transducer, consisting of both a transmitter and receiver. Ultrasonic energy is
transmitted from the í¦headí¦ in the direction of the liquid surface. When the ultrasonic
waves contact the surface, they are reflected back to the receiver in the head.
Electronics, which produce, control and time the ultrasonic pulses which are transmitted
and received by the head. The electronics also transmit control signals to remote
monitoring devices such as displays and process control systems.