Clamp-On sensor (Transducer A and B)
Insertion sensor
Transit-Time Flow Meter work by coordinating the sensor and the main unit. Lanry offers two main types of sensors: clamp-on and insertion. Choosing the right sensor is crucial to ensure accurate measurement data. This article provides an overview of the factors to consider when selecting the appropriate sensor type for your application.
- 1. The characteristics of Clamp-on Type Sensors
Clamp-on flow sensor are designed for non-invasive measurement, making them ideal for situations where pipe shutdown or drilling is not feasible. These sensors are mounted on the outside of the pipe, without coming into direct contact with the fluid.
(1) Pipe Compatibility: clamp-on transducers are compatible with a wide range of pipe materials, including metals (stainless steel), engineering plastics (PE, PVC), and other uniform, dense pipes.
(2) Pipe Requirements: For optimal performance, the pipe should have a smooth, uniform surface. If there is any lining, it must fit seamlessly with the pipe to avoid gaps, as disruptions in the pipe’s surface can affect measurement accuracy.
(3) Medium and Temperature Range: Non-invasive clamp-on sensors are suitable for measuring single-phase liquids free from excessive bubbles and solid particle impurities. They operate within a temperature range of -35°C to 200°C.
(4) Application Scenarios: Clamp-on ultrasonic flow meter sensors are ideal for situations where the pipe cannot be shut down or drilled, or where non-contact, pollution-free measurement is required. Typical applications include municipal water supply, wastewater treatment, food and beverage industries, and chemical fluid monitoring.
Advantages:
No need to shut down or drill into pipes.
Ideal for non-invasive, pollution-free measurements.
Can be installed without disrupting the flow.
- 2. The characteristics of Insertion Type Sensors
Insertion sensors provide direct contact with the flow medium, offering highly accurate and stable measurements. These sensors are typically chosen for applications that require high precision.
(1) Installation Compatibility: Insertion flow sensors are compatible with most pipe materials. For weldable metal pipes like carbon steel, the sensors can be welded directly into the pipe.
(2) Medium and Temperature Requirements: Insertion sensors also measure single-phase liquids, free from excessive bubbles and solid particles. They can operate within a temperature range of -35°C to 150°C.
(3) Medium Properties: Since insertion ultrasonic transducers directly contact the medium, it is critical that the medium is non-toxic and non-corrosive to extend its service life. Additionally, regular cleaning of the probe is necessary to maintain measurement accuracy and prevent contamination.
(4) Application Scenarios: Insertion type flow sensors are typically used in industrial environments that demand high-precision measurements, including like chemical processing, pharmaceuticals, and others.
Advantages:
Provides more accurate and stable measurements.
Suitable for high-precision applications.
Ideal for installations where drilling is feasible.
3. Conclusion
Both clamp-on and insertion sensors for transit-time ultrasonic flow meters offer unique advantages, depending on the application. Clamp-on transducers are best suited for situations where no drilling or contact is permissible, such as municipal water systems and food industries. In contrast, insertion sensors excel in high-precision applications where pipe drilling is feasible, such as in chemical or pharmaceutical industries.
By understanding the specific requirements of your application, including pipe material, medium properties, and precision needs, we can help you select the most appropriate sensor type to ensure accurate and reliable flow measurements.
Post time: Feb-10-2026