ABM - Model R-MH -Manhole Radar Level Sensor

• Wireless battery powered sensor with solar compatibility
• Remote monitoring, control, and support via built-in cellular modem
• Measuring range up to 100 ft (30.5 m)
• Top of manhole installation, no confined space entry
• Non-contact, maintenance free level measurement – no submersion
• Custom mounting bracket and aiming laser for easy installation
• Two-way communication for simple remote web-based setup and calibration

• Technology: Pulse radar
• Measuring Range: Up to 100 ft (30.5 m)
• Accuracy: +/- 0.10 % of maximum range (in lab using 4-20 mA current output). +/- 0.25 % of maximum range (typical in field)
• Frequency: 6.3 GHz or 5.8 GHz
• Calibration: Programmable via Sensor Access website
• Output: Cellular data transmission to ABM sensor servers
• Power: 12-30 VDC, 0.2 A max @ 24 VDC for short time duration
• Battery Options: Internal primary AA packs, internal solar rechargeable AA packs, or external 18D battery box
• Communication: Remote via Sensor Access website
• Ambient Temperature: -40 to 60°C (-40 to 140°F)
• Installation Category: Class II
• Enclosure Material: Aluminum standard. SS316L optional
• Protection Rating: IP68 (NEMA 6)
• Antenna: Teflon rod or SS316L horn
• Process Connection: 1.5″ – 3″ NPT
• Process Temperature: -40 to 80°C (-40 to 176°F)
• Process Pressure: ≤ 5 Bar (72.5 psi)

High Performance, Maintenance Free Radar Sensor.

• Self-adjusting sensor, automatically eliminates false echoes without user involvement
• High resolution with short transmitted pulses ensures accuracy
• Very narrow radiation beam enables installation close to tank walls
• No influence from mounting, walls or internal obstructions on sensors performance
• No influence from temperature, pressure or humidity on measurement
• Teflon rod antenna resists material and moisture build-up
• Non-contact and self-cleaning nature provides maintenance free operation

Technology Advantage

ABM’s smart, self-adjusting radar sensors continually monitor conditions in the environment and automatically adjust the transmitted energy and sensitivity to match 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.

Very narrow transmit pulses enable liquid interface detection, such as oil-water interface. The radar sensor has a very fast response, up to 20 updates per second, enabling control for fast moving applications (i.e. vehicles, boats, etc.). Very high dynamics enables detection of very low dielectric constant liquids (>2).

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.

Wireless Level Measurement for Remote Sewer Level Monitoring

ABM’s sewer level monitoring solution integrates non-contact radar sensors, secure cellular communication, and a web-based management interface to provide real-time, remote monitoring of sewer systems – helping to eliminate sanitary sewer overflows (SSO) and combined sewer overflows (CSO), enhance operational efficiency, and reduces costs.