Wireless Level Measurement for Remote Monitoring Applications
The UL-RMB battery-powered wireless remote ultrasonic level sensor from ABM is the ideal solution for liquid and solid remote monitoring level applications. The extremely low-power ultrasonic sensors with built-in cellular modem are plug-and-play, automatically connecting to the ABM secured servers for ease of installation.
The non-contact ultrasonic sensor provides level measurement up to 60 ft (18.2 m) with simple push-button or remote calibration. Internal and external battery pack options are available. The sensor can be factory configured for a variety of applications with multiple range options.
Industries
Applications
- Water tower levels
- Manhole / sewer water level
- Flood monitoring
- Remote storage tanks
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 60 ft (18.2 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″ – 12″ (range dependent – see table below)
Frequency: 45, 52, 70, 80, 81 or 148 kHz (range dependent – see table below)
Calibration: Push-button or remotely via Sensor Access website
Output: Cellular data to ABM sensor server
Power: 6-30 VDC (battery supplied)
Communication: Remote via cellular modem
Ambient Temperature: -40 to 60°C (-40 to 140°F )
Installation Category: Class II
Enclosure Material: PVC standard. Aluminum or 316L stainless steel optional
Protection Rating: IP68 (NEMA 6)
Transducer: PVC standard. High Temperature Teflon or Sanitary SS316L optional
Process Connection: 1″ – 3″ NPT
Process Temperature: -40 to 60°C (-40 to 140°F)
Process Pressure: ≤ 2 Bar (29 psi)
| Range Code | Range | Blanking | Frequency | Beam Angle | Resolution | Mounting |
| 148 | 0.4 - 9 ft / 0.12 - 2.7 m | 4.8" | 148 kHz | 12° | 0.04” / 0.98 mm | 3.0" / 1.0" NPT |
| 081 | 0.6 - 16 ft / 0.18 - 4.9 m | 7.2" | 81 kHz | 12° | 0.07” / 1.8 mm | 3.0" / 1.5" NPT |
| 080 | 0.7 - 20 ft / 0.21 - 6.1 m
| 8.4" | 80 kHz | 12° | 0.09” / 2.2 mm | 3.0" / 2.0" NPT |
| 070 | 0.8 - 30 ft / 0.24 - 9.1 m | 9.6" | 70 kHz | 12° | 0.13” / 3.4 mm | 3.0" / 2.0" NPT |
| 052 | 0.9 - 50 ft / 0.27 - 15.2 m | 10.8" | 52 kHz | 12° | 0.23” / 5.7 mm | 3.0" / 2.0" NPT |
| 045 | 1.0 - 60 ft / 0.30 - 18.2 m | 12" | 45 kHz | 9° | 0.27” / 6.8 mm | 3.0" NPT |
