Integrated Flow & Temperature Sensor NK210 Standard Series
- Brand: NOIKE-AH
- Model: NK210
Specification
Integrated Flow & Temperature Sensor NK210 Standard Series
The NOIKE-AH Integrated Flow & Temperature Sensor NK210 Standard Series is designed for reliable flow monitoring and control in industrial fluid systems. By setting upper or lower flow thresholds, the switch outputs signals or alarms when the flow reaches the preset limit, enabling automatic equipment start/stop and process protection.
Based on the thermal dispersion measuring principle, the NK210 features no moving parts, low pressure loss, and integrated flow and temperature monitoring. It is suitable for monitoring liquids and gases compatible with stainless steel in a wide range of industrial applications.
Why Choose the Integrated Flow & Temperature Sensor NK210 Standard Series?
The NK210 combines thermal flow sensing, OLED display, and configurable switching functions in a compact industrial design.
Key advantages include:
- Thermal dispersion measurement technology
- No moving parts for maintenance-free operation
- Flow and temperature monitoring in one device
- OLED display for real-time operating status
- Adjustable switch points
- Low pressure loss
- Suitable for multiple pipe diameters
- Reverse polarity, short-circuit, and overload protection
- Stainless steel construction with IP67 protection
Product Features
Thermal Dispersion Measuring Principle
The NK210 measures flow using thermal dispersion technology. A heated sensing resistor and an unheated reference resistor are integrated inside the sealed probe. As fluid flows past the probe, heat is carried away from the sensing resistor, causing a change in resistance. The resistance difference between the two elements is used to determine the flow velocity.
No Moving Parts
The sensor contains no mechanical moving components, helping reduce maintenance requirements while simplifying installation.
Adjustable Flow Switching
Users can configure upper or lower flow thresholds according to application requirements. The switch outputs a signal or alarm when the preset flow limit is reached.
OLED Display
A 0.96-inch OLED display provides:
- Digital flow indication
- Flow trend visualization
- Switch status display
Integrated Temperature Monitoring
The NK210 supports temperature measurement together with flow monitoring and can be used for temperature alarm and remote monitoring applications.
Industrial Protection
Designed with built-in electrical protection, including:
- Reverse polarity protection
- Short-circuit protection
- Overload protection
Typical Applications
The NK210 Thermal Flow Switch is suitable for:
- Pneumatic systems
- Hydraulic systems
- Cooling water monitoring
- Cutting fluid monitoring
- Lubricating oil monitoring
- Pump dry-run protection
- Industrial flow monitoring systems
Working Principle
The NK210 operates using the thermal dispersion principle.
Inside the sealed probe are two resistors: one heated sensing resistor and one unheated reference resistor. During operation, the flowing medium removes heat from the heated resistor. The resulting resistance difference between the sensing and reference resistors changes with the flow velocity. The electronics process this signal to calculate the flow condition and generate the corresponding switch output.
Technical Specifications
| Parameter | Specification |
|---|---|
| Flow Range | Water: 1–200 cm/s; Oil: 3–300 cm/s; Air: 20–2000 cm/s (Factory/Field Calibration Required) |
| Compatible Media | Liquids and gases compatible with stainless steel (e.g. water, oil, air) |
| Repeatability | ±1% (<0.6 m/s); ±3% (<1.5 m/s); ±10% (>1.5 m/s) |
| Output Options | PNP / NPN / Relay; NO / NC Configurable |
| Load Capacity | 500 mA (24VDC PNP/NPN); 60W (Relay) |
| Display | 0.96-inch OLED Digital Display |
| Setting Method | Keypad Adjustment |
| Pressure Rating | 100 bar (300 bar optional) |
| Response Time | 1–13 s (Typical 2 s) |
| Initialization Time | Approximately 8 s |
| Power Supply | 24VDC ±20% |
| Electrical Protection | Reverse Polarity, Short Circuit, Overload Protection |
| Protection Rating | IP67 |
| Medium Temperature | -20°C to +85°C |
| Ambient Temperature | -40°C to +85°C |
| Storage Temperature | -20°C to +100°C |
| Connection | M12 Connector or 2 m Cable (Default) |
| Material | Probe and Housing: 304 Stainless Steel |
| Weight | 0.4 kg |
Accessories
Default electrical accessory:
- NK05PU02FG (5-core straight cable, 2 m)
Custom configurations, including flanged versions, are available upon request.
Frequently Asked Questions (FAQ)
How does the NK210 measure flow?
The NK210 uses thermal dispersion technology. It measures the temperature difference between a heated sensing resistor and an unheated reference resistor to determine flow velocity.
Does the NK210 contain moving mechanical parts?
No. The sensor operates without moving parts, helping reduce maintenance requirements.
What media can the NK210 monitor?
The sensor is suitable for liquids and gases compatible with stainless steel, including water, oil, and air.
What output options are available?
The NK210 supports PNP, NPN, and relay outputs, with configurable normally open (NO) and normally closed (NC) switching logic.
Can the switch monitor temperature?
Yes. The NK210 integrates temperature measurement and supports temperature alarm and remote monitoring functions.
Installation Notes
- Verify the process connection and electrical wiring before powering the device.
- Select the appropriate calibration according to the measured medium.
- Flanged versions and other customized configurations require special ordering.
Table of Contents
Talk With Us
- [email protected]
- +86 180 5512 0225
- +86(0551)-65501008
- Address: 206, Block B, No. 2 Tianda Road, High-tech Zone, Hefei City, Anhui Province, China
- We will respond to you within five minutes.
