Author: yibiao

What Are the Advantages and Disadvantages of Submersible and External-Mounted Level Meters? Liquid level measurement is an essential part of many industrial processes, including storage tanks, water tanks, oil tanks, process vessels, and liquid handling systems. Depending on the installation method and measurement principle, different types of level instruments are available. Submersible level meters and…

How to Select a Steam Flow Meter? Orifice Plate, Flow Nozzle, and Venturi Tube for Different Operating Conditions Direct Answer Selecting a steam flow meter should not be based on pipe size alone. Engineers should consider steam type, pressure, temperature, flow range, allowable permanent pressure loss, installation conditions, and measurement requirements. Orifice plates, flow nozzles,…

CNC Spindle & Laser Tube Cooling Protection: Flow Switch Selection and Troubleshooting Direct Answer Question Direct Answer Why do CNC spindles and laser tubes need flow switches? They require continuous liquid cooling to prevent overheating, bearing damage, or tube rupture. A flow switch provides an interlock signal to stop the machine if cooling is lost….

Pump Dry-Run Protection: Flow Switch vs. Level Switch vs. Current Monitoring Direct Answer Question Direct Answer What is pump dry running? Operating a pump without sufficient liquid inside the casing, which can lead to rapid seal failure, bearing damage, and motor burnout. What is the best protection method? There is no single universal method. Flow…

Chiller Low-Flow Alarm Troubleshooting: Causes, Flow Switch Testing, and Solutions Direct Answer A chiller may show a low-flow alarm because of pump problems, closed valves, blocked strainers, trapped air, insufficient flow, incorrect switch settings, or a faulty flow switch. A flow switch detects whether the flow condition crosses a defined threshold and provides a switching…

Flow Switch vs Flow Sensor vs Flow Meter: Key Differences and Selection Guide Direct Answer A flow switch detects whether fluid flow is above or below a predefined threshold and provides a discrete ON/OFF signal. A flow sensor or flow transmitter provides continuous flow-related data through analog or digital signals, while a flow meter is…

What Is Flow Velocity and Why Does It Matter in Industrial Piping? Whether you are designing a complex industrial water system, configuring fire pump pipelines, or selecting precision instrumentation, understanding fluid dynamics is non-negotiable. Among all the parameters engineers must calculate, flow velocity stands out as one of the most critical factors determining the long-term…

How to Select a Flow Meter by Pipe Size and Flow Range: A Practical Sizing Guide Direct Answer Selecting a flow meter by pipe size and flow range requires more than matching the meter’s nominal diameter to the pipeline. The correct size should be determined from the minimum, normal, and maximum flow rates, the resulting…

Why Is My Flow Meter Reading Unstable? Direct Answer An unstable flow meter reading is not always caused by a faulty flow meter. Common causes include unstable process flow, insufficient straight pipe, turbulence, air or gas bubbles, partially filled pipes, incorrect grounding, sensor installation problems, electrical interference, and unsuitable flow-meter selection. The correct troubleshooting approach…

Direct Answer A thermal flow switch detects fluid flow by measuring the heat transfer between a heated sensing element and the surrounding medium. When fluid moves past the sensor, it carries heat away from the sensing element, changing its temperature or the energy required to maintain a defined temperature difference. The electronics compare this change…

How to Choose the Right Liquid Level Switch Based on Medium Characteristics A liquid level switch may work perfectly in one application and fail repeatedly in another. The reason is often not the level switch itself—but the medium being measured. When selecting a liquid level switch, engineers should look beyond tank size and switching point….