Our Sensors > Flow Sensors
- Corrosion-resistant plastic housing
- Simple teach-in start-up
- Maintenance-free operation
- M32 cable gland for pressure-resistant fitting
- Adjustments via Potentiometer or teach-in
- Various designs available
8046AFKM 240.18 G S4 Flow Sensors , -10°C up to 60°C
24V DC ± 15%,PNP Schließer + Öffner,
Housing Material: PBT,Length: 80mm , Plug S4 (M12 x 1 A)
Data sheet »8047AFKMT 240.18 G S4 Flow Sensors , -10°C up to 60°C
24V DC ± 15%,PNP Schließer + Öffner *,
Housing Material: PTFE / Anschlussseite PBT,Length: 84mm , Plug S4 (M12x1 A)
Data sheet »8048AFKM 241.18 G S4 Flow Sensors , -10°C up to 60°C
24V DC ± 15%,PNP Schließer + Öffner *,
Housing Material: PBT,Length: 80mm , Plug S4 (M12x1 A)
Data sheet »8049AFKMT 241.18 G S4 Flow Sensors , -10°C up to 60°C
24V DC ± 15%,PNP Schließer + Öffner *,
Housing Material: PTFE / Deckel: PBT,Length: 84mm , Plug S4 (M12 x 1 A)
Data sheet »
Flow sensors from Proxitron can monitor the flow speed of media in gas form to enable the simple and effective control of flow processes. The basis of this sensor system is the calorimetric principle.
It makes use of the cooling effect on a surface of a medium flowing past it, similar to how your finger feels cold when held up in the wind. On a flow sensor, the surface of the sensor is heated up to a defined temperature. If this surface is exposed to a flow, the sensor surface cools down. The stronger the flow, the stronger the cooling effect, which serves as a measure of the flow speed. The cooling effect of the flow is analysed electronically, and the flow sensor delivers an output signal based on this, according to the version, which can be used to monitor the flow.
The possible uses of flow sensors are highly diverse, ranging from general air-conditioning technology to extraction systems. In contrast to indirect flow monitoring, which monitors the rotational movement of fans or pumps, with this principle the flow of the medium is monitored directly, therefore also enabling detection of soiled filters and congestion or blockages in the flow circuit. The adjustable flow value can provide advance warning of the flow dropping below a minimum acceptable limit, for example, to promptly initiate maintenance work on an exhaust system. The zero-maintenance and wear operation of Proxitron flow sensors means they are superior to other sensor systems such as air direction relays and vane anemometers, and makes them the preferred choice wherever reliable and fault-free flow monitoring is required.
What is a Flow Sensor?
A Flow Sensor, also known as a flow switch or flow monitor, measures the flow velocity or volume of a medium—such as air, gas, water, or oil—inside a pipe or duct. Proxitron Flow Sensors provide precise and reliable flow measurement, ideal for demanding industrial and process monitoring applications.
How does a Proxitron Flow Sensor work?
Proxitron Flow Sensors operate on the thermal measurement principle. The heat dissipation of a heated sensor element is measured as the medium flows past. This allows for contactless and wear-free flow measurement, ensuring long-term reliability even under harsh industrial conditions.
Where are Proxitron Flow Sensors used?
Our Made in Germany Flow Sensors are used in a wide range of industries, including:
Steel and metal production
Chemical and petrochemical industries
Power plants and energy systems
Process automation and plant engineering
Cooling and ventilation systems
Wherever flow, air, gas, or liquid media need to be monitored precisely, Proxitron sensors deliver dependable results.
What are the advantages of Proxitron Flow Sensors?
Contactless measurement with no moving parts – maintenance-free and durable
High accuracy, even at low flow velocities
Rugged design for extreme temperatures and harsh environments
Easy installation and integration into existing systems
Temperature compensation for stable, precise readings
Developed and manufactured in Germany (Made in Germany)
Which media can Proxitron Flow Sensors detect?
Depending on the model, Proxitron Flow Sensors are suitable for gases (e.g. air, nitrogen) or liquids (e.g. water, oil, coolant).
The choice of sensor depends on parameters such as medium type, temperature, pressure, and pipe diameter. Our experts will be happy to help you select the best flow sensor for your application.
How are Flow Sensors installed?
Installation is quick and easy using the supplied mounting flange or an optional M32 cable gland directly into the pipeline.
An exact alignment of the sensor is not required. However, for optimal measurement accuracy, it is recommended to maintain a sufficient inlet section before the sensor.
Thanks to their compact design, Proxitron Flow Sensors can be easily integrated into existing systems or retrofitted without major modifications.
Why choose Flow Sensors from Proxitron?
Over 50 years of experience in industrial sensor technology
High quality, precision, and reliability
Personal consultation and technical support
Manufactured in Germany under the highest quality standards
With Proxitron Flow Sensors, you benefit from accurate measurement, process reliability, and efficiency—in every industrial application.
Write to us by email at sales@proxitron.de, use our contact form or call us on 04121 2621-0.
Our team will be pleased to advise you and provide you with all the information you need!
Sensor Selector
Brochures
Application questionnaires