The explosion-proof target flow switch is mainly designed for industrial explosion-proof areas. When the flow rate exceeds the set value, the fluid pushes the baffle and drives the micro switch on the top through the mechanical device in the water flow switch. It is usually used in places where interlocking action or flow interruption protection is required.
The explosion-proof grade of SI-01BS target explosion-proof flow switch is ExiaIIC T6 Ga.
Features
- Good repeatability;
- Small pressure loss;
- Good dirt resistance, good dust and water resistance;
- Manufactured strictly in accordance with explosion-proof technology, greatly simplified in structure, far superior to ordinary target flow switches in terms of reliability, service life, operating temperature range, working pressure and requirements for the operating environment.
SI-01BS Target Explosion-proof Flow Switch Technical Parameters
| Setting range: | Refer to the following table |
| Repeatability: | ±2.5% total range |
| Wiring method: | Terminal wiring |
| Output form: | Micro switch SPDT (normally open + normally closed) output |
| Pressure resistance | 25bar |
| Ambient temperature: | -25~80℃ |
| Medium temperature: | ≤250℃ |
| Average pressure loss: | 0.08bar (maximum flow) |
| Protection level | IP65 |
| Explosion-proof level | R1″thread |
| Material | Body: stainless steel Process connection: stainless steel Connecting rod: stainless steel Baffle: stainless steel Protective housing: stainless steel explosion-proof junction box |
Applicable to pipe diameter ≤6″
| Installation pipe diameter (DN) | Applicable baffle model | Pressure (bar) | Adjustable range (water) L/min | Hysteresis (water) L/min | Weight (kg) |
| 25 | 4 | 100 | 0.37~1.22 | 0.5 | 0.55 |
| 25 | 5 | 100 | 0.26~0.86 | 0.4 | |
| 50 | 4 | 100 | 0.57~1.68 | 0.8 | |
| 50 | 5 | 100 | 0.33~1.08 | 0.5 |
Applicable to pipe diameter ≤125″
| Installation pipe diameter (DN) | Applicable baffle model | Pressure (bar) | Adjustable range (water) L/min | Hysteresis (water) L/min | Weight (kg) |
| 1″ | 1 | 100 | 20~48 | 8 | 0.55 |
| 1 1/4″ | 1 | 100 | 34~100 | 10 | |
| 1 1/2″ | 1 | 100 | 65~160 | 14 | |
| 2″ | 1 | 100 | 120~280 | 26 | |
| 2 1/2″ | 1 | 100 | 210~550 | 18 | |
| 3″ | 1 | 100 | 380~750 | 20 | |
| 2″ | 2 | 100 | 40~140 | 18 | |
| 2 1/2″ | 2 | 100 | 110~340 | 15 | |
| 3″ | 2 | 100 | 180~470 | 18 | |
| 4″ | 4 | 100 | 350~920 | 20 | |
| 3″ | 3 | 100 | 115~220 | 20 | |
| 4″ | 3 | 100 | 210~590 | 20 | |
| 5″ | 3 | 100 | 380~1200 | 40 | |
| 6″ | 3 | 100 | 550~1800 | 80 |
Target Explosion-proof Flow Switch Working Principle
The explosion-proof target flow switch uses the flow of water to drive the blade to test whether the liquid in the pipe is flowing. When the liquid does not flow in the pipe, the spring presses the magnet down to make the blade vertical. At this time, the reed switch does not work and the contact is in the normally open (NO) position.
When there is liquid flowing in the pipe and the liquid flow is enough to push the blade up about 20°~30°, the eccentric transmission plate above the blade pushes the magnet up, and the suction of the magnet causes the reed switch to work, and the contact is connected (closed). Due to the different pipe diameters, the blade length also needs to change accordingly. The product has a variety of target lengths to choose from. Users can choose the appropriate length according to the pipe diameter and flow switching value to meet the control requirements.
Order Guide (Note: Special customization is supported)
| SI-01BS | 025 | H | X | Detailed description |
| SI-01BS | SI-01BS series baffle flow switch | |||
| 025 | Threaded interface G1 | |||
| H | External thread | |||
| X | 304 stainless steel |
- When ordering, please indicate the flow direction, type of medium, pipe diameter and expected setting value. We can help you complete the setting at the factory.
- If it is a viscous medium, please indicate the viscosity, temperature and type of medium.
- If it is a gas medium, please indicate the pressure (gauge pressure/absolute pressure), temperature and type of medium.
- The micro switch can be imported and selected according to customer needs.
More Flow Switches
Target Explosion-proof Flow Switch adopts a cam structure. The flow resistance is low and it is not easy to break. It can be used in water cooling systems, lubricating oil systems or air duct systems as a flow switch or alarm protection.
Sino-Inst supports the customization of explosion-proof flow switches, including installation dimensions, temperature, pressure, material, etc. If you need to purchase Target Explosion-proof Flow Switch, or have related technical questions, please feel free to contact us!