Flow & Temperature Integrated Transmitter NK500C

Product Overview

The Flow & Temperature Integrated Transmitter NK500C is an intelligent industrial sensor designed to provide real-time monitoring of both liquid flow and temperature within pipelines. By integrating flow sensing, temperature measurement, digital display, and alarm output into a single device, it offers an efficient solution for process monitoring and automation.

The transmitter continuously monitors pipeline operating conditions and provides flow alarm switch output, temperature 4–20 mA analog output, or temperature switch output according to application requirements. A built-in LED digital display simultaneously presents the current flow status and temperature, while configurable alarm contacts allow users to perform integrated monitoring and protection of industrial pipeline systems.

Its compact design, reliable performance, and versatile output options make the NK500C suitable for a wide variety of industrial process control applications.

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Operating Principle

The Flow & Temperature Integrated Transmitter NK500C  is developed based on a thermal dispersion flow switch combined with an integrated temperature transmitter.

The sensing probe contains both a heating module and a thermal sensing module. During operation, the heating element continuously generates heat.

• When there is no fluid flow, the thermal sensing module detects a constant temperature.
• When liquid flows through the pipeline, the flowing medium carries away heat from the heating element.
• The amount of heat removed changes according to the flow velocity.
• The thermal sensing module detects this temperature difference and converts it into an electrical signal.
• The internal processor converts the signal into a standard analog output or switch output, enabling accurate flow monitoring and control.

Meanwhile, the integrated temperature transmitter continuously measures the process temperature and displays both flow status and temperature on the LED display, providing comprehensive pipeline monitoring in one device.

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Product Features

• Integrated flow and temperature monitoring
• Real-time flow and temperature measurement
• LED digital display
• Flow alarm switch output
• Temperature 4–20 mA analog output
• Optional temperature switch output
• Minimal pressure loss
• Effectively prevents material entanglement within the medium
• Fully waterproof housing design
• Unique waterproof adjustment knob
• Suitable for a wide range of pipe diameters
• Adjustable switching set point
• Optional high-pressure version (maximum pressure up to 600 Bar)
• Optional corrosion-resistant version
• LED indicator provides direct flow status indication
• Compact and reliable industrial design

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Product Applications

The NK500C is widely used in:

• Hydropower plants
• Petrochemical industry
• Power generation
• Metallurgy
• Steel mills
• Paper manufacturing
• Food processing
• Water treatment
• Battery manufacturing
• Industrial process automation
• Cooling water systems
• Hydraulic systems
• Process pipeline monitoring

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Technical Functions

The NK500C integrates multiple functions into a single device, including:

• Continuous flow monitoring
• Continuous temperature monitoring
• LED digital display
• Flow alarm output
• Temperature analog output
• Temperature switch output
• Adjustable alarm contacts
• Integrated pipeline monitoring
• Process protection
• Industrial automation support

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Wiring Diagram

Product Advantages

The NK500C combines flow sensing, temperature measurement, alarm control, and digital display into one compact instrument, reducing installation complexity and improving system reliability.

Compared with installing separate flow switches and temperature transmitters, the integrated design offers:

• Reduced installation space
• Lower wiring costs
• Simplified maintenance
• Improved monitoring efficiency
• Faster system response
• Enhanced process safety

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Typical Applications

The Flow & Temperature Integrated Transmitter NK500C is commonly installed in:

• Cooling water circulation systems
• Heat exchangers
• Pump protection systems
• Lubrication systems
• Hydraulic equipment
• Water treatment plants
• Chemical processing lines
• Food production equipment
• Paper manufacturing systems
• Industrial automation equipment

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Frequently Asked Questions (FAQ)

How does the NK500C measure flow?

The NK500C uses the thermal dispersion principle. A built-in heating element generates heat, while a thermal sensing module measures the heat carried away by the flowing liquid. The temperature difference is converted into an electrical signal to determine the flow condition.

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Can the NK500C measure temperature and flow simultaneously?

Yes. The NK500C is designed to provide simultaneous monitoring of both flow and temperature, allowing users to monitor multiple process parameters using one compact device.

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What output signals are available?

The NK500C supports:

• Flow alarm switch output
• Temperature 4–20 mA analog output
• Optional temperature switch output

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Is the NK500C suitable for high-pressure applications?

Yes. An optional high-pressure version is available with a maximum pressure rating of 600 Bar.

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Can the switching point be adjusted?

Yes. The NK500C supports adjustable switching set points, allowing users to configure alarm thresholds according to different process requirements.

Why Choose the Flow & Temperature Integrated Transmitter NK500C ?

The Flow & Temperature Integrated Transmitter NK500C combines real-time flow monitoring, accurate temperature measurement, LED digital display, flow alarm outputs, and 4–20 mA temperature transmission in a single compact device. Built on reliable thermal dispersion sensing technology, it delivers stable performance, low pressure loss, waterproof construction, and flexible installation for demanding industrial applications, making it an ideal solution for process automation, equipment protection, and pipeline monitoring.