

Product Specifications
Brand: TECFLUID
Series: AD Series
Product Type: Mechanical Flow Switch
Accuracy: ±5% of full scale
Flow Range (Water): 0.25 to 270 L/min
Connections: ¼” to 2 ½” BSP / NPT
Materials: EN 1.4404 (316L) SS, Brass, Aluminum
Protection Rating: IP65
Certification: ATEX Ex ia IIC T4...T6 Ga / Ex ia IIIC T85°C Da (switches)
Product Description
The TECFLUID AD Series is a robust mechanical flow switch and indicator designed for monitoring liquid and gas flow in industrial applications. Operating on a magnetic coupling principle, the AD Series ensures complete separation between the process fluid and the switching, indicating, or transmitting systems. This watertight, no-contact design enhances reliability and prevents leakage, making it suitable for clear, opaque, or turbid liquids, as well as gases.
Core Features
- Versatile Flow Ranges: Covers water flow from 0.25 to 270 L/min and air flow from 300 Nl/h to 130 Nm³/h with ±5% full-scale accuracy.
- Flexible Installation: Suitable for horizontal or vertical pipe mounting, adapting to various system layouts.
- Multiple Material Options: Available in EN 1.4404 (AISI 316L) stainless steel, brass, or aluminum to suit different media and environmental requirements.
- Various Switching Configurations: Offers 1 or 2 adjustable reed switches, with optional ATEX Ex ia certification for hazardous areas. Inductive switches are also available.
- Analog Output Option: Model ADI15 provides a 4-20 mA analog output for integration into control and monitoring systems.
- Local Flow Indication: Equipped with a scale for local flow rate reading in l/h, l/min, m³/h, or %, enabling immediate visual verification.
Applications
The AD Series is widely used in cooling machine circuits, hydraulic systems, lubrication and oil circuits, gas flow control, and thermal oil systems across industrial automation, machinery, and process control sectors.
Resources & Documentation
¼” to 2 ½” BSP Mechanical Flow Switch for Liquids and Gases | TECFLUID
Product Specifications
Brand: TECFLUID
Series: AD Series
Product Type: Mechanical Flow Switch
Accuracy: ±5% of full scale
Flow Range (Water): 0.25 to 270 L/min
Connections: ¼” to 2 ½” BSP / NPT
Materials: EN 1.4404 (316L) SS, Brass, Aluminum
Protection Rating: IP65
Certification: ATEX Ex ia IIC T4...T6 Ga / Ex ia IIIC T85°C Da (switches)
