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Ultrasonic level sensor transmitter , measurement , level , flow



Orion Echo Ultrasonic Level Transmitters ( Sensor) offer non-contact measurement of liquid and solid level and volume. The transmitter is four-wire type and uses keypad and LCD display to set up parameters of the level, distance and volume range to be measured. fault indication keeps you informed of the operational and fault status at the Ultrasonic level transmitter. Orion Echo is a cost effective, ultrasonic level transmitter for measuring and monitoring liquid levels in open and closed tanks. Its small size makes it compact, combining sensor and electronics in one housing. The sensor section is manufactured from Glass reinforced epoxy or  PVDF as an option. This PVDF material is resistant to most chemicals, and includes an on-board, temperature sensing element to ensure correct level measurement at all temperatures. The electronics housing is manufactured from aluminium.

  • The Ultrasonic Level Transmitter  ECH_306 series combines an ultrasonic sensor and a transducer with a large 2x20-digit LCD display in IP68 cast aluminium enclosure.
  • The transmitter is powered with 15-30 VDC ; features a 4-20 mA output, RS485 Modbus serial port for PLC, or for monitoring
  • Two relays can be configured as latched for automatic fill or empty operations.
  • The transmitter ECH_0306 series includes a range of fail-safe features. Signal loss, power supply failure, level alarm can be activated with an adjustable time delay.
  • A range of filter functions control the return echoes and automatically eliminate all interference.
  • Easy and fast commissioning is guaranteed with the “Simulation” functions. Different tank shapes (cylindrical, cubic, spherical) can be easily programmed via fixed default shapes .
  • The measured value can be shown as level, distance (in cm, m, inch or feet), or direct as volume (liter, m 3 , imp. gal, U.S. gal).
  • The simulation functions allow the system to be tested under dry-run conditions. Applications.
  • Non-contact continuous level or volume measurement with all liquids in open or closed vessels.
  • Distance and movement supervision.
  • Waste engineering, water treatment and process technology.
  • Food industry.
  • Chemical and pharmaceutical industry 




24V DC +- %30 / 4 W max

Control relay

250VAC/1A NO 2 Set

Fail safe relay

Control relay can be configured as an fail safe relay

Serial port

RS485/RS232 MODBUS RTU up to 38400 Bps

Process out

4-20mA opticaly isolated (2kv) 14bit  / Hart option

Operatin condition

Transmitter : -10 °C to +60 °C  Sensor : -20 °C to +80 °C / PVDF Sensor : -40 °C to +90 °C

Sensor acoustic window

Glass reinforced epoxy /  PVDF option

Sensor housing

Delrin® POM-C EN 10204 / PVDF option

Protection class

IP68 IEC60529


1mm max

Linearity / Accuracy

0.0005 / %0,2

Max Measuring Distance

6m ( Liquid surface )

Min Measurement Distance


Sensor Frequency



-3 dB Full angle 10 degree

Compansation / Respond time

Temperature compansated 1/16s

Vibration test

5-500Hz 3G RMS random vibration IEC-60068-2-64

CE declaration

EN 61000-6-4:2001, EN 61000-6-2:2005, EN 61010-1:2001