• 4-20mA Level / Distance transmitter up to 15 Metres • 2 Calibration Keys plus RS485 communications • IP65 Flanged or threaded body • Designed for use with liquids and bulk solids The compact 521 and 522 ultrasonic level transmitters have been designed for the measurement of chemicals, liquids and granular solids in tanks and silos. By using a powerful single chip, a high speed processor and enhanced manufacturing techniques the 521 and 522 transmitters provide stable readings, accuracy & reliable measurements in many applications.The 521and 522 transmitters feature calibration switches in the connection head enabling easy calibration. If the 521 & 522 transmitters are used as a two-threshold transmitter (Minimum & Maximum levels) calibration is performed by simply pressing two switches in a pre-established sequence. For more complex applications the transmitters can be configured by a PC through the RS485 port using the “SMART” software enabling the user to set up minimum & maximum thresholds, pump controls or self diagnostic alarms. The 521 and 522 transmitters come as a standard 24vDC version with options for 24, 115 & 230vAC power supply versions.

LTH Electronics Ltd, Chaul End Lane, Luton, Bedfordshire. LU4 8EZ England Telephone: +44 (0)1582 593693 Fax: +44 (0)1582 598036 email: [email protected] web: www.lth.co.uk Specification: Materials: Mechanical installation: Electrical connection: Working temperature: Pressure: Power supply: Power consumption: Analogue output: Relays output: Serial port: Maximum measuring range: Blocking distance: Temperature compensation: Accuracy: Resolution: Calibration: LED’s display: Enclosure: IP65 PBT, Wetted Parts: Polypropylene G2.5 “ Bracket mechanical connection or DN150 PN6 flange Internal plug-in connectors -30...