NKFD-XS Digital Flow Computer & NKFA-XS Flow Display Controller
- Brand: NOIKE-AH
- Model: NKFD-XS
Specification
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 Technical Specifications
Display
| Parameter | Specification |
|---|---|
| Display Type | Monochrome LED |
| Service Life | More than 20,000 hours; ambient temperature 45°C; 24-hour operation |
| Display Area | 154 × 87 mm |
| Brightness | Adjustable |
| Text Setting | Simplified Chinese / English |
| Character Size / Font | Bold / Song font |
| Key | Membrane key |
Memory
| Parameter | Specification |
|---|---|
| Screen Memory | 64KB FlashROM |
| Variable Memory | 1KB SRAM |
Interfaces
| Parameter | Specification |
|---|---|
| Download Port | RS232 |
| Communication Port | RS485, MODBUS protocol, DB9-pin |
Electrical Characteristics
| Parameter | Specification |
|---|---|
| Power Supply | DC22–DC26V |
| External Power Supply | DC24V |
| Power Consumption | <140mA |
| Power Loss Tolerance | <10ms (total unit power-off less than 1 second) |
| Voltage Surge Resistance | AC1000V, 20mA, less than 1 minute |
| Insulation Resistance | >10MΩ, DC500V |
Environmental Conditions
| Parameter | Specification |
|---|---|
| Operating Temperature | 0–50°C |
| Storage Temperature | -20–60°C |
| Operating Humidity | 10%RH–90%RH, non-condensing |
| Interference Resistance | Interference voltage: 1500 V P-P; pulse width: 1 μs; duration: 1 minute |
| Air Condition | No corrosive gases |
| Cooling Method | Natural cooling |
Mechanical Structure
| Parameter | Specification |
|---|---|
| Overall Dimensions | 202 × 147 × 42.5 mm |
| Panel Cutout Dimensions | 192 × 138 mm |
NKFD-XS Product Selection
Series
NKFD-XS
Product Type
| Code | Configuration |
|---|---|
| 01 | Single channel |
| 02 | Two channels |
| 03 | Three channels |
| 04 | Four channels |
Power Supply
| Code | Power Supply |
|---|---|
| D | 24VDC |
| A | 220VAC |
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
| Technical Parameter | Specification |
|---|---|
| Output Voltage (for MFC) | +15V ±3%, -15V ±3% |
| Power Supply | 165VAC–265VAC |
| Input / Output Signal | DC 0–5V, 4–20mA |
| Display Unit | SCCM (standard cubic centimeters/minute); SLM (standard liters/minute) |
| External Control | Flow adjustment / shutdown |
| Display Channels | Single-channel, two-channel, three-channel, four-channel display |
| External Dimensions | Single channel: 96 × 96 × 173 mm; Multi-channel: 483 × 140 × 210 mm |
| Panel Cutout | Single channel: 92 × 92 mm; Multi-channel: 442 × 124 mm |
| Auxiliary Output | +5.00V / 5mA |
| Maximum Power Consumption | Single channel: 15W; Multi-channel: 45W |
| Weight | Single channel: 1 kg; Multi-channel: max. 7.5 kg |
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
| Code | Channel Configuration |
|---|---|
| 01 | Single channel |
| 02 | Two channels |
| 03 | Three channels |
| 04 | Four channels |
Flow Adjustment Function
| Code | Function |
|---|---|
| 01 | With |
| 02 | Without |
Input / Output Signal
| Code | Signal |
|---|---|
| V | 0–5 VDC |
| A | 4–20 mA |
Installation Type
| Code | Installation |
|---|---|
| T | Desktop |
| P | Panel mounting |
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.
| Item | NKFD-XS Digital Flow Computer | NKFA-XS Flow Display Controller |
|---|---|---|
| Main Function | Flow calculation, display and totalization | Flow display, power supply and flow setting/control |
| Display | 7-inch monochrome STN LCD | Single- to four-channel display |
| Channel Configuration | 1–4 flow signal inputs | Up to 4 MFC channels |
| Manual Operation | Yes | Yes |
| Flow Totalization | Yes | — |
| Alarm List | Yes | — |
| Password Protection | Yes | — |
| Communication | RS232 / RS485 / MODBUS | 0–5VDC / 4–20mA |
| Installation | Equipment installation | Desktop / embedded |
| Typical Connection | MFC/MFM/PLC | MFC / flow meter |
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
- Select the required channel number.
- Select the required power supply.
- 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
- Select the required number of channels.
- Select whether the flow adjustment function is required.
- Select the required input/output signal.
- 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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