Continuous Level Measurement for Sanitary Applications
The UL-SAN ultrasonic level sensor from ABM is the ideal solution for hygienic liquid, slurry or solid level applications. The sensor is designed with a 316L stainless steel transducer face and 1.5″ or 2″ tri-clamp mounting options.
The surface finish exposed to process exceeds a No.4/dairy finish (~18 micro inches). The sensor can withstand steam cleaning /clean-in-place (CIP) processes for 30 minutes with the high temperature (≤ 130°C / 266°F) and high pressure (≤ 5 bar /72.5 psi) stainless steel ferrule upgrade.
The non-contact ultrasonic sensor provides continuous level measurement up to 30 ft (9.1 m) with 4-20 mA output standard and simple push-button calibration. The sensor can be factory configured for a variety of applications with battery supply (cellular modem), 2-wire loop-power (HART) or 3-wire / 4-wire (RS232 or RS485) power and communication options as well as remote monitoring.
High Performance, Maintenance Free Ultrasonic Level Sensor.
Self-adjusting sensor, automatically eliminates false echoes without user involvement
Very uniform polar pattern, negligible side lobes
Very uniform near field
Very wide frequency bandwidth that produces uniform echoes, short ringing and wide temperature operation
No influence from mounting, walls or internal obstructions on sensors performance
No influence from temperature, pressure or humidity on measurement
Automatically removes condensation and build-up from transducer face
Non-contact and self-cleaning nature provides maintenance free operation
Technology Advantage
ABM’s self-adjusting ultrasonic sensors continually monitor conditions in the environment and automatically adjust the transmitted energy, transmitted pulse amplitude and it’s duration, and receiver sensitivity to match to the current tank conditions. This technique allows the receiver to detect only one echo from the measured media while all false echoes are pushed under the noise level and eliminated. The self-adjusting technique also gives the same amplitude of wanted echoes regardless of distance to the target. With one echo only, signal processing is very simple and the certainty of the measured echo being the target is 100%. This makes the ABM sensors very accurate and reliable. In addition, it enables very fast response (up to 20 echoes per second) for fast moving applications such as conveyor belts.
The sensors have very narrow and uniform polar patterns. ABM’s ultrasonic technology has a very wide frequency bandwidth that produces uniform echoes, short ringing, and wide temperature operation.
Operation is plug-and-play with ABM sensors. The self-adjusting nature means there is no need for mapping or profiling the environment or downloading several parameters. These signal process operations commonly used by other brands reduce the certainty in the measured materials level. ABM sensors are smart and automatically adapt without user involvement.
Technology: Ultrasonic Measuring Range: Up to 30 ft (9.1 m) Accuracy: +/- 0.10 % of maximum range (in lab using 4-20 mA current output). +/- 0.25 % of maximum range (typical in field) Blanking Distance: 4.8″ – 9.6″ (range dependent – see table below) Frequency: 70, 80, 81 or 148 kHz (range dependent – see table below) Calibration: Push-button or programmable via communications port Output: 4-20 mA output 6.1 uA resolution Power Options: 12-30 VDC (2-wire loop-powered), 12-30 VDC (3-wire), 115 VAC (4-wire), 230 VAC (4-wire) or 6-30 VDC (battery pack, cellular only) Communication Options: HART 7, RS232, RS485 or Cellular Modem Ambient Temperature: -40 to 60°C (-40 to 140°F) Installation Category: Class II Enclosure Material: PVC standard. Aluminum or SS316L optional Protection Rating: IP68 (NEMA 6) Process Connection: 1.5″ or 2″ tri-clamp mounting Transducer:
SS316L face with PVC ferrule standard
SS316L face and ferrule with high temperature and pressure [HTP] upgrade Process Temperature:
-40 to 60°C (-40 to 140°F) standard (no steam cleaning / CIP)
-40 to 130°C (-40 to 266°F) with high temperature and pressure [HTP] upgrade (30 minutes of steam cleaning / CIP. Remove sensor for longer cleaning cycles, recommended. Not for continuous operation) Process Pressure:
≤ 2 Bar (29 psi) standard
≤ 5 Bar (72.5 psi) with high temperature and pressure [HTP] upgrade
