Standard Thermal Flow Switch
The Standard Thermal Flow Switch detects gas or liquid flow using the thermal dispersion principle, ensuring reliable and accurate monitoring.
Read MoreThe Digital Thermal Flow Switch is a high-precision device for monitoring and controlling liquid and gas flow in industrial pipelines. Equipped with a digital display, it provides real-time flow indication and easy parameter adjustment.
Wide flow detection range: 1…300 cm/s (water), 3…300 cm/s (oil), 20…2000 cm/s (air)
Flexible outputs: PNP, NPN, relay, 4…20mA analog output, NO+NC (SPDT)
Robust design: Pressure resistance up to 50 bar
High temperature capability: -20…70°C medium temperature
Fast response: Typical response time ~2s, initialization ~8s
Durable housing: Stainless steel probe and housing
Reliable protection: IP67, with reverse polarity, short-circuit, and overload protection
The Digital Thermal Flow Switch is a versatile device for monitoring and controlling the flow of liquids and gases in industrial pipelines. Equipped with a digital display, it provides real-time flow indication and allows easy adjustment of process parameters. Designed for maintenance-free operation with no moving parts, it is suitable for a wide range of industrial applications, including circulating water, cutting fluids, lubricating oils, and other process media.
Wide flow detection range: 1–300 cm/s (water), 3–300 cm/s (oil), 20–2000 cm/s (air)
Flexible outputs: PNP, NPN, relay, 4–20 mA analog output, NO+NC (SPDT)
Robust design: Pressure resistance up to 50 bar
High temperature capability: -20…70°C medium temperature
Fast response: Typical response time ~2 s, initialization ~8 s
Durable housing: Stainless steel probe and housing
Reliable protection: IP67 rated, with reverse polarity, short-circuit, and overload protection
Thermal principle operation: Uses a heated and reference resistor to detect flow
No moving parts: Wear-free, maintenance-free design
Compact and versatile: Single model fits multiple pipe diameters
Adjustable switch output: Continuous adjustment of switching point
Low pressure loss: Minimal impact on fluid flow
Easy installation: Plug-in or inline installation options
LED display: Shows flow trends and switch status in real time
Dual media compatibility: Suitable for both gas and liquid media
Industrial systems: Monitoring of circulating water, cutting fluids, and lubricating oils in pneumatic and hydraulic systems
Pump protection: Prevents dry running and equipment damage
Flow cut-off detection: Ensures safe operation in pipelines with varying media
The product price may vary depending on specific parameters, materials, and configuration requirements.
If you want to know the latest price of ZINACA Instruments’ Digital Thermal Flow Switch, please feel free to contact us for a quotation.
ZINACA Instruments is a professional industrial instrument manufacturer specializing in pressure, temperature, flow, and level measurement devices.
We provide customized OEM solutions for Digital Thermal Flow Switches according to your specific requirements and operating conditions.
If you are seeking Digital Thermal Flow Switch OEM services, please contact ZINACA Instruments.
ZINACA Instruments is a trusted Digital Thermal Flow Switch manufacturer, certified with ISO 9001, CNAS, IAF, SIL, and ACM, ensuring high-quality and reliable products for industrial applications.
Our switches deliver safe and stable performance across oil & gas, chemical, metallurgy, power, and machinery industries.
Technical parameters
| Parameter | Specification |
|---|---|
| Flow detection range | 1…300 cm/s (water), 3…300 cm/s (oil), 20…2000 cm/s (air) |
| Signal output | PNP, NPN, Relay, 4…20mA analog output, NO+NC (SPDT) |
| Power supply | 24V ±20% DC |
| Switching current | Max. 400mA (PNP or NPN type), Max. 3A (Relay type) |
| No-load current | Max. 80mA |
| Flow indication | 4-digit digital display |
| Setting method | Keypad setting |
| Pressure resistance | 50 bar |
| Temperature gradient | ≤4℃/s |
| Response time | 1—13s, typical 2s |
| Initialization time | 8s |
| Electrical protection | Reverse polarity, short-circuit, overload protection |
| Protection class | IP67 |
| Medium temperature | -20…70℃ |
| Ambient temperature | -20…60℃ |
| Storage temperature | -20…60℃ |
| Connection type | M12 connector / optional 2m cable |
| Material | Probe: Stainless steel; Housing: Stainless steel |
| Weight | 0.6 kg |
| Repeatability | ±2% of measured value |
The Standard Thermal Flow Switch detects gas or liquid flow using the thermal dispersion principle, ensuring reliable and accurate monitoring.
Read MoreThe Explosion-proof Flow Switch provides safe, reliable flow monitoring in hazardous, flammable, or dusty environments.
Read MoreThe Digital Thermal Flow Switch monitors the flow of liquids and gases in industrial pipelines, featuring a digital display for real-time visualization.
Read MoreThe Explosion-Proof Flow Switch can be widely used for flow detection, alarm, and control in flammable and explosive environments such as petroleum, chemical, power, metallurgy, and other industries.
Read MoreNo. 12, Within Waihuan Industrial Company Compound, Fujin Road, Zhongbei Town, Xiqing District, Tianjin, China