Pulsar - Model dBi-M Series -Ultrasonic Intelligent Transducers with Modbus

Why Modbus?

Modbus is often used to connect a plant/system supervisory computer with a remote terminal unit in supervisory control and data acquisition (SCADA) systems. The Modbus protocol uses character serial communication lines, ethernet, or the internet protocol suite as a transport layer. The protocol supports communication from multiple devices connected to the same cable or ethernet network.

Suitable for Low Power and Remote Applications

The dBi-M is ready for the most challenging remote applications. The IP68 design enables the unit to be fully submerged, perfect for applications where flooding or surcharging can occur. The ultra-low power consumption of the dBi-M will give you the longest deployment time possible, providing data insights for extended periods of time while reducing the need to maintain your data collection system. The dBi-M is a greener solution to remote network monitoring and discharge point monitoring.

Designed to fit low-power and low-overhead needs for remote installations, users can multi-drop up to 120 dBi-M level sensors with just a single controller. The open protocol allows the dBi-M to connect to any Modbus-enabled device, saving thousands on installation costs and labor.

The Modbus Series of Transducers are available in a range of different formats, designed to be able to meet the needs of your application. Units are available with flanged or front-thread connections for mounting flexibility, PTFE coating for corrosive applications, fitted with a foam face for solids applications, and submergence shields to prevent the face of the transducer from becoming dirty in applications where submergence is common.

dBi-M now FM Approved

Our dBi-M, Modbus Intelligent Ultrasonic Transducers, are now FM-approved for Class I, Div 1 installations in the US and Canada. Having this approval showcases the quality of the sensor and gives assurance that by purchasing a dBi-M you'll be receiving a product of the highest standard.

The FM Approval is a product certification that is a globally recognized benchmark that acts as a stamp of assurance, signifying that a product is safe, reliable, and high quality.  FM certification is particularly significant in high-risk environments with prevalent fire hazards, explosions, and other potential risks.

Other Approvals 

• CE Approval 
• ATEX Approval: Zone 0: II 1 G Ex ia IIC T4 Ga, and Zone 20: II 1 D Ex ia IIIC T130°C Da
• FM Approval for Class I, Div 1 installations in the US and Canada
• Also suitable for Zones 1, 2, 21, and 22

Use the downloads tab below to learn more about the dBi-M non-contacting ultrasonic level sensor.

• Measurement Range: 125 mm to 15 m (4.9 in to 49.2 ft)
• Sensor Body Material: Valox 357 PBT
• Mounting Connection: BSP or 1 in NPT
• Operating Temperature: -40 °C to +80 °C (-40 °F to +176 °F)
• Input Voltage Range: 5-15 V DC
• Output: RS485 Modbus
• Current Consumption: Average 14 mA
• Boot-Time: 1 second for the first measurement
• Communication Protocol: Modbus RTU

• Materials: PVDF for dBi-M6 and dBi-M10
• Accessories: Submergence Shield for dBi-M3, dBi-M6, dBi-M10, and dBi-M15
• Foam Face for dBi-M10 and dBi-M15
• Mounting:
  • Front thread / PVDF for dBi-M3, dBi-M6, and dBi-M10
  • Flanged DIN / ANSI for dBi-M6, dBi-M10, and dBi-M15
  • Sanitary Flange for dBi-M3, dBi-M6, and dBi-M10
• Cable: point connector fitted to the cable