Time to get smart with hydraulic flow monitoring

January 25, 2023 Editor

The compact, rugged and resilient design of the new Webtec CTA series flow monitor makes it ideal for permanent installation on both on- and off-highway vehicles, where it can monitor, record and transmit data about oil flow rates and temperature via a J1939 CAN-bus interface. This innovative device is perfect for use in predictive maintenance/IoT systems. By communicating directly to the vehicle’s control and monitoring network, it is possible to transmit performance data to the cloud or IOT system with subsequent download and analysis in real time. Further uses include the enablement of autonomous vehicle operation, closed-loop control, real-time diagnostics and safety interlocks. The units are fully EMC-compliant, resistant to water spray and steam cleaning (IP69K protection rating), and unaffected by heavy vibration.

The CTA’s operation uses a turbine wheel mounted in the flow stream and a sensor which senses the passing of each turbine blade. The on-board electronics then convert the sensor pulses into a flow-rate signal ready for transmission via an SAE J1939 CAN-bus signal to the vehicle’s control system. Indeed, the vehicle’s control system could also serve as a link to centralised monitoring and diagnostic station. As a point of note, the CAN-bus connection is facilitated by a Deutsch automotive connector in-line with inlet port to reduce height.

The CTA flow monitor can also facilitate system performance information and action in safety-critical applications, like tilting trains or hoists. Monitoring the outlet flow from a winch drive motor, for example, will give an immediate indication of potential over-speed. In addition, the flow meter can form part of an actuator’s open- or closed-loop control system. Here, users can obtain a feedback signal proportional to the actuator speed by monitoring the actuator flow rate, which they can then use for the closed-loop speed control of the actuator.

Contact details www.webtec.com // email: sales-uk@webtec.com // Tel: 01480 397444