Product Overview

The NOIKE-AH Digital Intelligent Flow & Temperature Sensor NK210 is an intelligent flow monitoring device that combines flow detection and temperature measurement in one compact instrument. Based on thermal dispersion technology, it accurately monitors the flow of water, oil, and gases while simultaneously displaying and transmitting temperature data.

Featuring a 0.96-inch full-color display, adjustable switching points, and multiple output options, this flow switch is an ideal replacement for traditional thermal flow switches. With no moving parts, it delivers maintenance-free operation, minimal pressure loss, and reliable long-term performance in industrial automation systems.

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Key Features

• Thermal dispersion flow measurement technology
• Integrated flow and temperature monitoring
• Suitable for water, oil, and gas
• Color LCD display for real-time flow and temperature
• Adjustable flow switching point
• Temperature alarm function
• Remote flow and temperature monitoring
• No moving parts for maintenance-free operation
• Extremely low pressure loss
• Compact design saves installation space
• Easy button configuration
• Supports multiple industrial output signals

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Working Principle

The Intelligent Flow & Temperature Sensor NK210 operates using the thermal dispersion principle.

Inside the sealed probe are two precision resistors:

• Heated sensing resistor
• Reference resistor

When there is no fluid movement, the temperature difference between the two resistors remains constant. As the medium flows past the probe, heat is carried away from the heated resistor, changing its resistance value.

The electronics continuously compare the temperature difference between the two resistors to calculate the flow rate. When the measured flow reaches the preset switching point, the device outputs the corresponding control signal.

At the same time, the integrated temperature sensor continuously measures the process temperature for local display and remote transmission.

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Technical Specifications

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Output Signals

Flow Output

• PNP
• NPN
• IO-Link
• 4–20 mA
• 1–5 V

Temperature Output

• PNP
• NPN
• IO-Link
• 4–20 mA
• 1–5 V

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Display

The integrated 0.96-inch full-color LCD provides real-time visualization of:

• Flow status
• Flow trend
• Switching status
• Process temperature
• System settings

The intuitive interface enables fast parameter adjustment and easy operation.

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Materials

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Typical Applications

The digital Intelligent Flow & Temperature Sensor NK210 is ideal for monitoring:

• Industrial circulating water systems
• Cooling water systems
• Hydraulic systems
• Pneumatic systems
• Lubrication systems
• Cutting fluid monitoring
• Pump dry-run protection
• Process cooling equipment
• Industrial automation
• General liquid and gas flow monitoring

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Product Advantages

• Simultaneous flow and temperature measurement
• One device replaces multiple instruments
• Suitable for both liquids and gases
• Full-color digital display for easy monitoring
• Maintenance-free with no moving mechanical parts
• Adjustable flow switching point
• Temperature alarm capability
• Supports analog, switching, and IO-Link outputs
• Fast response and excellent repeatability
• Compact design reduces installation space
• Simple installation using standard M12 connector

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Installation Recommendations

For the best measurement performance:

• Install according to the indicated flow direction.
• Ensure the sensing probe is fully immersed in the medium.
• Avoid installation near strong electromagnetic interference.
• Supply the device with 24 VDC ±20% power.
• Configure the desired flow and temperature thresholds before commissioning.
• Periodically clean the probe when measuring contaminated media to maintain optimal performance.

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Industries Served

• Industrial Automation
• Machinery Manufacturing
• Water Treatment
• HVAC
• Chemical Processing
• Food & Beverage
• Pharmaceutical Manufacturing
• Hydraulic Equipment
• Pneumatic Systems
• Energy & Utilities
• Process Control

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Frequently Asked Questions (FAQ)

What media can this flow switch measure?

It is designed for water, oil, and gas, making it suitable for a wide range of industrial liquid and gas applications.

Does the device measure temperature as well as flow?

Yes. It integrates flow detection and temperature measurement into a single instrument and supports temperature alarms and remote monitoring.

What communication and output options are available?

The device supports PNP, NPN, IO-Link, 4–20 mA, and 1–5 V outputs for both flow and temperature signals.

Does it require regular maintenance?

No. The no-moving-parts design minimizes wear and enables maintenance-free operation. For contaminated media, periodic cleaning of the probe is recommended.

Can it protect pumps from dry running?

Yes. It can detect low-flow or no-flow conditions, making it ideal for pump dry-run protection and flow interruption monitoring.

Is the switching point adjustable?

Yes. Users can easily configure the flow switching threshold using the built-in buttons and color display.

What is the maximum operating pressure?

The standard pressure rating is 100 bar.

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Why Choose the NOIKE-AH Digital Intelligent Flow & Temperature Sensor NK210?

The NOIKE-AH Intelligent Flow & Temperature Sensor NK210 combines thermal dispersion flow sensing, temperature monitoring, programmable outputs, and a full-color display in one compact device. With its maintenance-free design, high-pressure capability, and support for IO-Link, analog, and switching outputs, it provides a reliable and space-saving solution for modern industrial flow monitoring and process automation.

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Panel Diagram