Flow Switch

Flow Switch

Flow Switch adopts the precision electronic components generally applied in aerospace and automobiles, as well as the reliable and stable circuit design, to ensure a precise and stable flow signal. The products have been widely used in iron and steel, metallurgy, pharmaceuticals and chemical industries etc.

Flow switch design based on the heat exchange principle, with heating and thermal modules embedded in the probes. The heat dissipation of heating module is closely related to the velocity of the measured flow. If there is no medium flow, the thermal circuit will receive a signal changeable with the flow velocity of the medium. The thermal circuit converts the temperature difference signals of heating module and thermal module into electrical Signals, while the processor coverts them into PNP/NPN/relay signals and Analogue outputs.

The switch is designed for both gas and liquid, It can be used for the cutoff monitoring of gas and hydraulic system, circulating water, cutting fluid and lubricant, as well as the idling protection of pumps.

Key Features

No Moving Parts
• No moving parts for reliable and long-lasting operation
Accurate Low Flow Measurement
• Accurately detects very low flow rates of liquids and gases
Wide Application Range
• Suitable for liquids, gases, and air flow monitoring
Continuously Adjustable Switch Value
• Switch value can be continuously adjusted as per application requirements
Temperature Compensation
• Maintains measurement accuracy even with temperature variations
Minimal Pressure Loss
• Provides almost no pressure loss during operation
Easy Installation
• Simple and convenient installation
Compact & Robust Design
• Compact construction with a rugged design for reliable operation

Industrial Applications

Cooling Water Systems
Reliable flow and pressure monitoring for cooling water systems.
Pump Protection (Dry Run Protection)
Protection and monitoring solutions to help prevent pump dry running.
HVAC Systems
Monitoring solutions for HVAC water, air and circulation systems.
Lubrication Systems
Flow and pressure monitoring for industrial lubrication systems.
Chemical Processing Plants
Reliable monitoring solutions for chemical processing applications.
Water & Wastewater Treatment
Flow and process monitoring for water and wastewater treatment systems.
Food & Beverage Industry
Hygienic monitoring solutions for food and beverage processing systems.
Pharmaceutical Industry
Precision monitoring solutions for pharmaceutical process applications.
Compressed Air Systems
Monitoring solutions for compressed air flow and system performance.
Boiler & Steam Systems
Flow and pressure monitoring for boiler and steam distribution systems.
Semiconductor & Electronics Industry
Precision monitoring solutions for semiconductor and electronics manufacturing.
Fire Protection Systems
Reliable monitoring solutions for fire protection and firefighting systems.

Technical Specifications

Parameter Details
Measurement Principle Thermal dispersion (heat transfer)
Measured Medium Liquids / Gases / Air / Oil
Switching Output 4-20mA / PNP / NPN / Relay
Output Type NO/NC selectable
Response Time 1 – 10 seconds
Operating Temperature -20°C to +80°C (higher on request up to 120°C)
Process Pressure Up to 100 bar (depending on model)
Power Supply 24V DC / 230V AC
Current Consumption < 100 mA
Process Connection Threaded (G 1/2”, G 1”, NPT) / Flanged
Wetted Material Stainless Steel (SS304 / SS316)
Housing Material SS / Aluminum / Plastic
Protection Class IP65 / IP67
Indication LED status indication
Set Point Adjustment Potentiometer / Digital display
Mounting Position Any (recommended horizontal for liquids)
Certification (Optional) CE / ATEX / ISO
Application Flow / No-flow detection

Ordering Information_SS FLOW _ CFS

Parameter Details
Display 1. Potentiometer / 2. Digital Display
Protection 1. IP65 / 2. IP67
Pressure 1. Up to 100 Bar / 2. Other
Explosion Proof 1. Yes / 2. No
Connection 1. Flange / 2. Thread
Output 1. 4 to 20mA / 2. PNP / 3. NPN / 4. Relay
Temperature 1. 80 Degree C / 2. Above 80 Degree C
Power 1. 24V DC / 2. 230V AC