Thermal Flow Switch

Digital Thermal Flow Switch

The 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


Description

Overview of Digital Thermal Flow Switch

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.


Features of Digital Thermal Flow Switch

  • 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


Applications of Digital Thermal Flow Switch

  • 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


Price of Digital Thermal Flow Switch

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.


Digital Thermal Flow Switch OEM Service

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.


Digital Thermal Flow Switch Manufacturer

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

ParameterSpecification
Flow detection range1…300 cm/s (water), 3…300 cm/s (oil), 20…2000 cm/s (air)
Signal outputPNP, NPN, Relay, 4…20mA analog output, NO+NC (SPDT)
Power supply24V ±20% DC
Switching currentMax. 400mA (PNP or NPN type), Max. 3A (Relay type)
No-load currentMax. 80mA
Flow indication4-digit digital display
Setting methodKeypad setting
Pressure resistance50 bar
Temperature gradient≤4℃/s
Response time1—13s, typical 2s
Initialization time8s
Electrical protectionReverse polarity, short-circuit, overload protection
Protection classIP67
Medium temperature-20…70℃
Ambient temperature-20…60℃
Storage temperature-20…60℃
Connection typeM12 connector / optional 2m cable
MaterialProbe: Stainless steel; Housing: Stainless steel
Weight0.6 kg
Repeatability±2% of measured value

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Tianjin ZINACA Intelligent Equipment Co., LTD

Location

No. 12, Within Waihuan Industrial Company Compound, Fujin Road, Zhongbei Town, Xiqing District, Tianjin, China

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+8617320288925

WhatsApp Email +8617320288925