Thermal Gas Mass Flow Meter NK50 series | Digital Gas Flow Meter with LED Display

Brand：NOIKE-AH
Model：NK50

Specification

Product Overview

The Thermal Gas Mass Flow Meter NK50 is designed using the thermal dispersion measuring principle for reliable gas flow measurement and monitoring. It features a 180° reversible display direction, allowing flexible installation while maintaining clear visibility in different mounting positions.

The instrument is equipped with a 4-digit LED digital display, providing convenient local viewing of instantaneous flow values and accumulated flow data. Multiple output options, including NPN/PNP switch outputs, 4–20 mA current output, and 1–5 V voltage output, enable easy integration with industrial automation systems such as PLC, DCS, and SCADA.

Its compact design and simple parameter setting make the flow meter suitable for a wide range of industrial gas flow monitoring applications.

Product Features

Thermal dispersion measurement principle
Gas mass flow measurement
180° reversible display direction
4-digit LED digital display
Instantaneous flow display
Accumulated flow viewing function
NPN/PNP switch output
4–20 mA analog current output
1–5 V analog voltage output
Easy parameter setting and operation

Applications

Typical Applications

Industrial gas flow monitoring
Process automation systems
Equipment gas consumption monitoring
Industrial process control
Gas flow indication and recording

Technical Specifications

Parameter	Specification
Measuring Principle	Thermal Dispersion
Measuring Medium	Gas
Display	4-digit LED Display
Display Direction	180° Reversible
Display Accuracy	±3% F.S.
Repeatability	±1% F.S.
Display Functions	Instantaneous Flow / Totalized Flow
Switch Output	NPN / PNP
Analog Voltage Output	1–5 V
Analog Current Output	4–20 mA

Output Options

The thermal gas flow meter supports multiple industrial output methods:

NPN switch output
PNP switch output
4–20 mA analog current output
1–5 V analog voltage output

These output options facilitate integration with PLCs, DCS, SCADA systems, and other industrial controllers.

Why Choose This Thermal Gas Mass Flow Meter NK50 series?

Industrial gas flow monitoring requires reliable measurement together with convenient operation and flexible signal transmission. This thermal gas mass flow meter integrates digital display and multiple output options into one compact instrument.

Thermal Dispersion Measurement

The instrument operates using the thermal principle for gas mass flow measurement and provides continuous flow indication for industrial applications.

Convenient Local Monitoring

The 4-digit LED display provides clear visualization of instantaneous flow values and accumulated flow data for routine inspection and process monitoring.

Flexible Installation

The 180° reversible display direction allows users to adjust the viewing angle according to installation orientation.

Multiple Signal Outputs

Support for NPN/PNP switch outputs, 4–20 mA, and 1–5 V analog outputs enables flexible integration with industrial automation and control systems.

Simple Operation

The straightforward parameter setting interface and digital display simplify commissioning and daily operation.

Application Case

Gas Flow Monitoring in Industrial Process Equipment

In industrial production lines, stable gas flow monitoring is important for maintaining process consistency and equipment operation. A thermal gas mass flow meter can be installed in gas supply pipelines to continuously monitor gas flow conditions.

The instrument displays instantaneous flow and accumulated flow locally through the LED display while transmitting signals via NPN/PNP outputs, 4–20 mA, or 1–5 V analog outputs to PLC or industrial control systems. Operators can monitor gas consumption on-site and integrate flow signals into centralized automation systems for process management and equipment supervision.

Its compact structure, reversible display, and multiple output options make it suitable for various industrial gas flow monitoring applications.

Installation Notes

Install the flow meter according to the specified gas flow direction.
Rotate the display head as required for the best viewing angle.
Select the appropriate output mode before system commissioning.
Complete electrical wiring according to the selected NPN, PNP, current, or voltage output configuration.
Verify signal output before connecting to the control system.

Frequently Asked Questions (FAQ)

1. What measuring principle does the flow meter use?

The instrument operates using the thermal dispersion principle for gas mass flow measurement.

2. Can the display direction be adjusted?

Yes. The display direction can be rotated 180° for convenient viewing after installation.

3. What information is displayed?

The instrument provides:

Instantaneous flow
Accumulated flow

4. What output signals are available?

The flow meter supports:

NPN switch output
PNP switch output
4–20 mA analog output
1–5 V analog output

5. What is the display accuracy?

The display accuracy is ±3% F.S.

6. What is the repeatability?

The repeatability is ±1% F.S.

7. Can the flow meter be connected to PLC or SCADA systems?

Yes. The available analog outputs and switch outputs support integration with PLCs, DCS, SCADA systems, and other industrial controllers.

8. Is the instrument suitable for industrial automation?

Yes. It is designed for industrial gas flow monitoring, process control, and automation applications.

Optional Services

Output signal configuration
Customized installation requirements
Technical support
Product customization based on application requirements
Installation and commissioning assistance

Industries Served

Suitable for industrial gas flow monitoring applications, including:

Petroleum and Petrochemical
Natural Gas
Machinery Manufacturing
Electric Power
Metallurgy
Chemical Processing
Food Processing
Pharmaceutical Manufacturing
Environmental Protection