NKFD-XS Digital Flow Computer & NKFA-XS Flow Display Controller

Direct Answer

The NKFD-XS Digital Flow Computer is a multifunctional flow computer designed to receive digital flow signals and integrate manual operation, display, and totalization functions. It supports 1–4 flow signal inputs, multi-channel display, alarm functions, digital communication, and time-based accumulated flow functions.

The NKFA-XS Flow Display Controller is designed to provide working power, flow setting, manual flow control, and flow display for mass flow controllers or flow meters. It can be connected to up to four MFC channels, with options for embedded or desktop installation.

Key Takeaways

NKFD-XS Digital Flow Computer

• Uses a 7-inch monochrome STN LCD.

• Supports various models of MFC/MFM and PLC through the MODBUS protocol.

• Supports multi-channel simultaneous display and single-channel multi-parameter display.

• Provides an alarm list function and displays alarm information line by line.

• Supports software customization and definable buttons.

• Provides time-based accumulated flow and password protection functions.

• Supports 1–4 flow signal inputs.

• Integrates manual operation, display, and totalization functions.

NKFA-XS Flow Display Controller

• Provides working power for mass flow controllers or flow meters.

• Supports manual flow setting and control.

• Provides gas flow display.

• Can work with different models of mass flow controllers.

• Supports input/output signals of 0–5 VDC and 4–20 mA.

• Supports up to four MFC channels.

• Supports desktop or embedded installation.

What Is the NKFD-XS Digital Flow Computer?

The NKFD-XS Digital Flow Computer is a multifunctional flow computer that integrates the functions of a manual operator, display, and totalizer.

The unit directly receives digital signals. Compared with conventional secondary instruments using analog signals, the digital signal input improves performance in terms of accuracy, interference resistance, and signal transmission distance, according to the supplied product information.

The NKFD-XS can accept 1–4 flow signal inputs, and professional software can be customized according to user requirements.

Its large-screen display and slim structure, with a thickness of approximately 43 mm, facilitate installation in different types of equipment.

NKFD-XS Digital Flow Computer Features

1. 7-Inch Monochrome STN LCD

The NKFD-XS uses a 7-inch monochrome STN LCD.

The display supports:

• 154 × 87 display area

• Adjustable brightness

• Simplified Chinese / English text settings

• Bold / Song font options

The specified display service life is more than 20,000 hours under an ambient temperature of 45°C and 24-hour operation.

2. Multi-Channel Flow Display

The NKFD-XS supports 1–4 flow signal inputs and provides multi-channel display functions.

It can display multiple flow channels on the same screen and also provide multi-parameter display for a single channel.

3. Digital Communication

The flow computer provides:

• RS232 download interface

• RS485 communication interface

• MODBUS protocol

• DB9-pin communication connection

4. Alarm Function

The NKFD-XS provides an alarm list function and can display alarm information line by line.

5. Totalized Flow Function

The product provides a time-based accumulated flow function, allowing accumulated flow to be handled according to different time periods.

6. Password Protection

The NKFD-XS includes a password protection function.

NKFD-XS Digital Flow Computer & NKFA-XS Flow Display Controller

NKFD-XS Technical Specifications

Display

Memory

Interfaces

Electrical Characteristics

Environmental Conditions

Mechanical Structure

NKFD-XS Product Selection

Series

NKFD-XS

Product Type

Power Supply

Model Example

NKFD-XS 04 D

What Is the NKFA-XS Flow Display Controller?

The NKFA-XS Flow Display Controller is designed to provide working power, flow setting, manual operation/control, and flow display for mass flow controllers or flow meters.

The product can be used with different models of mass flow controllers. It can directly work with the NK10FA series mass flow controllers (MFC) manufactured by the company and can also be used with other models of mass flow controllers.

The NKFA-XS can connect up to four MFCs, with an individual display for each channel.

The unit is available in embedded and desktop installation configurations.

NKFA-XS Flow Display Controller Features

1. Provides Working Power

The NKFA-XS provides working power for mass flow controllers or flow meters.

2. Manual Flow Setting

The controller supports manual operation for flow setting and control.

3. Gas Flow Display

The NKFA-XS provides gas flow display for connected flow devices.

4. Multi-Channel Connection

The controller can be connected to up to four MFC channels, with individual display for each channel.

5. Wide Voltage Range

The product features a wide voltage range and strong interference resistance according to the supplied product information.

The product is also CE certified.

6. Flexible Installation

The NKFA-XS supports:

• Desktop installation

• Embedded / panel installation

NKFA-XS Technical Specifications

NKFA-XS Display Configuration

The NKFA-XS provides different display configurations according to the selected number of channels:

• Single-channel display

• Two-channel display

• Three-channel display

• Four-channel display

Each channel can have its own display.

NKFA-XS Product Selection

Series Number

The selection table in the supplied product information specifies:

NKFD-XS

The product title in the supplied document is NKFA-XS Flow Display Controller, while the product selection section shows NKFD-XS. Both designations have therefore been retained as shown in the original document rather than independently changing the model code.

Product Type

Flow Adjustment Function

Input / Output Signal

Installation Type

Model Example

NKFD-XS 04 01 V T

NKFD-XS Digital Flow Computer vs. NKFA-XS Flow Display Controller

The two products serve different functions within a flow measurement and control system.

How to Select the NKFD-XS / NKFA-XS

When selecting the appropriate configuration, confirm the following parameters from the original selection tables.

For NKFD-XS Digital Flow Computer

1. Select the required channel number.

2. Select the required power supply.

3. Confirm the required flow signal and communication configuration.

Available channel configurations include 1, 2, 3, and 4 channels.

Power supply options include:

• 24VDC

• 220VAC

For NKFA-XS Flow Display Controller

1. Select the required number of channels.

2. Select whether the flow adjustment function is required.

3. Select the required input/output signal.

4. Select the installation type.

Available configurations include:

• Single channel

• Two channels

• Three channels

• Four channels

Signal options:

• 0–5 VDC

• 4–20 mA

Installation options:

• Desktop

• Panel mounting

Applications

According to the supplied product information, the NKFD-XS and NKFA-XS are designed for use with flow measurement and mass flow control equipment, including:

• Mass flow controllers

• Mass flow meters

• MFC systems

• MFM systems

• PLC-based systems

• Gas flow measurement and display systems

The NKFD-XS can be used with various MFC/MFM models and PLC systems through the MODBUS protocol.

The NKFA-XS can be used with the company’s NK10FA series MFCs and other models of mass flow controllers.

Frequently Asked Questions

1. What is the NKFD-XS Digital Flow Computer?

The NKFD-XS is a multifunctional digital flow computer integrating manual operation, display, and totalization functions. It supports 1–4 flow signal inputs.

2. How many flow channels does the NKFD-XS support?

The NKFD-XS product selection provides single-channel, two-channel, three-channel, and four-channel configurations.

3. What display does the NKFD-XS use?

The NKFD-XS uses a 7-inch monochrome STN LCD with a display area of 154 × 87 mm.

4. Does the NKFD-XS support MODBUS?

Yes. The technical information specifies RS485 communication with the MODBUS protocol.

5. What is the NKFA-XS Flow Display Controller used for?

The NKFA-XS is used to provide working power, flow setting, manual operation/control, and flow display for mass flow controllers or flow meters.

6. How many MFC channels can the NKFA-XS connect?

The NKFA-XS can connect up to four MFC channels, with individual display for each channel.

7. What input/output signals does the NKFA-XS support?

The selection table specifies:

• 0–5 VDC

• 4–20 mA

8. What installation methods are available for the NKFA-XS?

The product supports desktop and embedded/panel installation.

9. What flow units can the NKFA-XS display?

The technical specification lists:

• SCCM — standard cubic centimeters per minute

• SLM — standard liters per minute

Conclusion

The NKFD-XS Digital Flow Computer integrates manual operation, display, flow calculation, alarm display, and accumulated flow functions into a single flow computer. It supports 1–4 flow signal inputs, RS232/RS485 communication, MODBUS protocol, and a 7-inch monochrome STN LCD.

The NKFA-XS Flow Display Controller is designed for mass flow controller or flow meter applications requiring working power, flow setting, manual control, and flow display. It supports up to four MFC channels, 0–5 VDC and 4–20 mA signals, and desktop or panel installation.

RFQ / Product Inquiry

For NKFD-XS or NKFA-XS selection, please confirm the required channel number, power supply, flow signal, input/output signal, flow adjustment function, communication requirements, and installation type according to the corresponding product selection table.

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