Industrial users often need to connect an ultrasonic flow meter to a PLC, SCADA system, or building management system for real-time flow monitoring and process control.
The TF1100-DC dual channel ultrasonic flow meter supports industrial integration options depending on the selected configuration. Before installation, confirm the available outputs and communication specifications for your particular unit.
1 1. 4–20 mA Analog Output
A 4–20 mA output is commonly used to transmit flow measurements to a PLC analog input. Before wiring, confirm the output configuration, scaling range, power requirements, and receiving input type. The PLC scaling must match the flow range configured in the transmitter.
2 2. RS485 Modbus Communication
RS485 Modbus allows digital communication between a compatible flow meter and a PLC, SCADA system, or industrial controller. Check the following settings before commissioning:
- • Communication protocol and register map.
- • Baud rate and serial communication parameters.
- • Device address.
- • RS485 wiring polarity.
- • PLC or SCADA communication configuration.
Incorrect communication settings or wiring may prevent the controller from reading the flow data.
3 3. Pulse and Relay Outputs
Depending on the instrument configuration, pulse output can be used for external flow totalization, while relay outputs can support selected alarm or control functions. Confirm the electrical ratings and intended functions before connecting these outputs to external equipment.
4. What Should You Check If Communication Fails?
If the PLC or SCADA system cannot read the flow meter, check the power supply, wiring, communication parameters, device address, and register configuration.
For analog signals, verify the current loop and the PLC input scaling. For Modbus communication, confirm that both devices use compatible settings and the correct register addresses.
Conclusion
The TF1100-DC ultrasonic flow meter can be integrated into industrial monitoring systems using compatible output and communication options. Confirm the required interfaces before ordering to ensure compatibility with your existing PLC or SCADA system.
Contact Lanry Instruments for the relevant wiring diagram, register map, and configuration guidance.
Post time: Oct-12-2026