Flow Control
Flow Meters and Sensors for Industrial Automation Monitoring
Flow control products are used to measure and monitor the flow of liquids and gases in industrial systems so operators can verify that pumps, lines, and processes are running within their targets. In automation and control applications, they provide the feedback needed for flow-based alarms, batching, dosing, and energy or utility monitoring.
Most devices accept signals from the process line and convert them into electrical outputs that can be read by a PLC, controller, or display. Flow meters provide a direct indication of flow rate or totalized volume, while flow sensors and switches are used to confirm the presence of flow, detect loss of flow or trigger simple on/off responses.
Galco offers flow control solutions for applications ranging from cooling water loops and process fluids to compressed air and gas systems. Our selection of flow meters and flow sensors helps maintenance and engineering teams match connection type, range, output signal, and environmental rating to each installation.
Frequently Asked Questions
What is the difference between a flow sensor and a flow switch?
A flow sensor measures flow continuously and outputs a signal proportional to the rate or volume. A flow switch provides a simple on/off output and activates only when the flow rises above or falls below a set threshold. Sensors are used for monitoring and control, while switches are used for protection or interlocks.
How do I select the right flow control device for my application?
Start by identifying the type of media, expected flow range, system pressure, temperature, and required accuracy. Then choose the output type that matches the input of your PLC or controller. Material compatibility and environmental conditions, such as moisture or chemical exposure, also play an important role.
What causes inaccurate flow readings?
Common causes include improper installation, turbulence in the line, incorrect pipe size, buildup or contamination on sensors, incompatible materials, or using a device outside its rated flow range. Ensuring proper mounting and selecting the correct sensor type improves accuracy.