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- Honeywell
- HNWG50049911-001
- Basic Display PWA Assembly
- USA
- 92 × 27 × 85 mm
- 0.3 kg
- Xiamen, China
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Product Overview
The Honeywell HNWG50049911-001 SmartLine Basic Display PWA Assembly is a local display circuit board assembly used in Honeywell SmartLine pressure transmitters. It provides the basic visual indication function within the transmitter’s electronic housing, allowing operators and maintenance personnel to view locally available measurement information without relying exclusively on a remote control system.
The assembly is associated with the SmartLine ST800 and ST700 pressure transmitter product families. In the transmitter configuration, the Basic Display is a separate component from the main electronics module. The electronics module handles the transmitter’s measurement processing and communication functions, while the display assembly provides the local operator-facing indication.
This distinction is important when selecting replacement parts. A SmartLine transmitter may use different electronic module configurations, including HART, DE, and FOUNDATION Fieldbus versions. The basic display is a separate assembly, and its compatibility should be checked against the specific transmitter generation and electronic housing arrangement.
The HNWG50049911-001 is associated with Honeywell Basic Display PWA Assembly part number 50065674. The assembly is intended for integration into the transmitter rather than standalone operation. Its installation position allows the display to be viewed through the designated display window in the transmitter housing.
In practical applications, local display information is useful during commissioning, routine inspection, and troubleshooting. A technician working at a pressure transmitter can check the indicated process measurement directly at the instrument, making it easier to compare local readings with the values received by the distributed control system.
For example, a pressure transmitter installed on a process pipeline may continuously send its measurement signal to a control room. During field inspection, maintenance personnel can use the local display to check the indicated pressure without returning to the control room. This helps identify discrepancies between the local instrument indication and the value shown by the supervisory system.
The Basic Display should not be confused with the Advanced Display assembly. These are separate SmartLine display options with different functionality. The correct replacement must match the original transmitter configuration and display requirements.
For maintenance and replacement applications involving Honeywell SmartLine pressure transmitters, the HNWG50049911-001 provides the basic local display interface within the transmitter electronic assembly.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Honeywell |
| Product Family | SmartLine |
| Model | HNWG50049911-001 |
| Product Type | SmartLine Basic Display PWA Assembly |
| Assembly Part Number | 50065674 |
| Display Type | Basic Display |
| Component Category | Display Printed Wiring Assembly |
| Compatible Product Family | SmartLine Pressure Transmitters |
| Associated Transmitter Series | ST700 / ST800 |
| Display Function | Local Process Measurement Indication |
| Installation Position | Transmitter Electronic Housing |
| Display Configuration | Basic Display |
| Main Electronics Module | Separate Transmitter Component |
| Communication Protocol | Dependent on Transmitter Electronics Module |
| Application | Local Instrument Display and Replacement |
| Dimensions | 92 × 27 × 85 mm |
| Weight | 0.3 kg |
Product Features
- Basic Local Display: Provides a local visual indication interface for compatible Honeywell SmartLine pressure transmitters.
- SmartLine Compatibility: Associated with the SmartLine ST700 and ST800 transmitter product families.
- PWA Assembly Design: Integrates the display-related electronic circuitry into a dedicated printed wiring assembly.
- Separate Display Configuration: Functions independently of the transmitter’s main communication electronics module.
- Local Measurement Indication: Allows field personnel to inspect transmitter readings directly at the instrument.
- Transmitter Housing Integration: Installs within the designated electronic housing and display window arrangement.
- Replacement Component: Supports maintenance and restoration of the original transmitter display configuration.
- Basic Display Option: Provides the standard display configuration rather than the Advanced Display option.
Working Principle
The HNWG50049911-001 operates as the local display assembly within a Honeywell SmartLine pressure transmitter. It receives the measurement and display information made available by the transmitter’s main electronics and presents the corresponding information through the local display interface.
The basic operating arrangement is:
Pressure Sensing Element → Transmitter Main Electronics Module → Display Interface → Basic Display Assembly → Local Operator Indication
Receiving Transmitter Information
The SmartLine pressure transmitter measures process pressure through its sensing element. The main electronics module processes the sensor signal and converts it into the corresponding engineering measurement.
Depending on the transmitter configuration, the processed measurement is also made available through the selected communication interface, such as HART, DE, or FOUNDATION Fieldbus.
The Basic Display assembly works with the transmitter’s electronic configuration to present the locally available measurement information.
Local Measurement Indication
Once the measurement information is available to the display assembly, the display provides a visual representation of the transmitter’s operating information.
This allows maintenance personnel to inspect the instrument directly in the field.
For example, a pressure transmitter installed on a steam pipeline may provide a local pressure reading while simultaneously transmitting measurement information to the control system. The technician can compare the local indication with the remote value during routine inspection.
Integration with the Main Electronics Module
The Basic Display is not the main measurement-processing board. It is a separate display component installed within the transmitter electronic housing.
The main electronics module performs the measurement processing and communication functions, while the display assembly provides the local indication interface.
This separation is useful when diagnosing display-related problems. If the transmitter continues to communicate normally with the control system but the local display is not operating correctly, the display assembly and its associated connections can be inspected separately from the main electronics.
Basic Display Configuration
The SmartLine product family includes both Basic Display and Advanced Display configurations.
The HNWG50049911-001 belongs to the Basic Display configuration. It should therefore be selected when replacing an existing basic display assembly rather than assuming that it is interchangeable with every SmartLine display option.
The required display type should be confirmed against the transmitter model, electronic housing, and original installed assembly.
Local Inspection and Maintenance
During normal operation, the display allows field personnel to check measurement information without accessing the transmitter’s internal electronics.
If the displayed information becomes unavailable or the display assembly is damaged, maintenance personnel can inspect the display board, its electrical connections, and the associated transmitter electronics.
A replacement assembly must be installed according to the applicable SmartLine maintenance procedure to preserve the original instrument configuration.
Role in the Honeywell SmartLine Control Architecture
The Honeywell HNWG50049911-001 serves as the local display component within the SmartLine pressure transmitter architecture. It provides the operator-facing indication function, while the transmitter’s sensing and main electronics assemblies handle pressure measurement processing and communication with the control system.
A typical measurement arrangement follows this structure:
Process Pressure → SmartLine Pressure Sensor → Main Electronics Module → Basic Display Assembly / Transmitter Output → PLC or DCS
| System Component | Function |
|---|---|
| Honeywell HNWG50049911-001 | Provides the local Basic Display interface |
| Honeywell 50065674 | Associated Basic Display PWA assembly part number |
| Pressure Sensing Element | Detects the applied process pressure |
| SmartLine Main Electronics Module | Processes measurement signals and manages transmitter operation |
| HART Electronics Module | Provides HART communication functionality in the corresponding transmitter configuration |
| DE Electronics Module | Supports the Digital Enhanced communication configuration |
| FOUNDATION Fieldbus Electronics Module | Supports FOUNDATION Fieldbus communication |
| Transmitter Terminal Assembly | Provides the electrical connection interface |
| Display End Cap | Houses and protects the local display arrangement |
| PLC | Receives transmitter measurements for machine and process control |
| DCS | Monitors process measurements and supports plant-wide control |
| Engineering Workstation | Supports transmitter configuration and maintenance activities |
In a typical process installation, a SmartLine pressure transmitter measures pressure in a pipeline, vessel, or industrial process system.
The transmitter’s main electronics process the sensor information and make the measurement available to the selected output and communication interfaces. At the same time, the Basic Display provides a local indication for personnel working near the instrument.
This arrangement allows the same transmitter to serve both field inspection and centralized process monitoring requirements.
The display assembly is therefore an operator-interface component rather than a replacement for the transmitter’s main electronics or communication module.
Industrial Applications
| Application | Typical Use |
|---|---|
| Oil and Gas Processing | Local pressure indication on pipeline and process equipment transmitters |
| Petrochemical Plants | Field inspection of pressure measurements in process units |
| Chemical Manufacturing | Local measurement viewing on pressure monitoring instruments |
| Power Generation | Checking pressure readings on steam and auxiliary process systems |
| Water Treatment | Local pressure indication on water distribution and treatment equipment |
| Pharmaceutical Production | Field observation of pressure measurements in process installations |
| Industrial Boilers | Local monitoring of steam and auxiliary pressure transmitters |
| Refinery Operations | Checking pressure readings on vessels, pipelines, and process equipment |
| Manufacturing Facilities | Supporting routine inspection of SmartLine pressure transmitters |
| Process Automation | Providing local measurement indication alongside PLC and DCS monitoring |
Installation and Maintenance
- Verify the Assembly Number: Confirm that the replacement is Honeywell HNWG50049911-001 and that it corresponds to the required Basic Display PWA assembly.
- Check Transmitter Compatibility: Identify the SmartLine transmitter model and verify that its original configuration uses the Basic Display rather than the Advanced Display.
- Inspect the Replacement Board: Examine the PWA, display connections, electronic components, and contact points for physical damage or contamination.
- Prepare the Transmitter: Follow the applicable SmartLine maintenance procedure and isolate the transmitter from the process and electrical connections as required.
- Remove the Display Housing: Carefully access the transmitter display compartment without damaging the housing threads, seals, or internal connections.
- Disconnect the Original Assembly: Identify the display connection and carefully disconnect the original board according to the transmitter service instructions.
- Inspect the Electrical Interface: Check the connector and associated contacts for corrosion, loose connections, or other conditions that could affect display operation.
- Install the Replacement PWA: Position the HNWG50049911-001 in the designated mounting location and connect its electrical interface correctly.
- Check the Display Alignment: Ensure that the display assembly is correctly positioned relative to the transmitter housing window and does not interfere with the enclosure components.
- Reassemble the Transmitter: Reinstall the display housing and associated sealing components according to the specified maintenance procedure.
- Verify Display Operation: Restore power and check that the local display initializes and presents the expected transmitter measurement information.
- Complete the Maintenance Record: Document the replacement part number, transmitter model, display operation, and any relevant maintenance observations.
Compatible System Components
| Component | Function |
|---|---|
| Honeywell HNWG50049911-001 | SmartLine Basic Display PWA Assembly |
| Honeywell 50065674 | Basic Display PWA Assembly |
| Honeywell 50049911-501 | SmartLine Basic Display replacement kit |
| Honeywell 50049846-501 | SmartLine Advanced Display replacement kit |
| Honeywell 50049849-501 | HART Electronics Module without Reed Sensor |
| Honeywell 50049849-502 | HART Electronics Module with Reed Sensor |
| Honeywell 50049849-503 | DE Electronics Module without Reed Sensor |
| Honeywell 50049849-504 | DE Electronics Module with Reed Sensor |
| Honeywell 50049849-507 | FOUNDATION Fieldbus Electronics Module without Reed Sensor |
| Honeywell 50049849-508 | FOUNDATION Fieldbus Electronics Module with Reed Sensor |
| Honeywell 50049832-501 | Display End Cap |
| Honeywell 50049915-001 | External Zero, Span and Configuration Buttons |
| Honeywell ST800 | SmartLine Pressure Transmitter Series |
| Honeywell ST700 | SmartLine Pressure Transmitter Series |
Recommended Related Models
| Model | Product Type | Typical Application |
|---|---|---|
| Honeywell 50049911-501 | SmartLine Basic Display Kit | Replacement of the standard local display |
| Honeywell 50049846-501 | SmartLine Advanced Display Kit | Upgrading to the Advanced Display configuration |
| Honeywell 50049849-501 | SmartLine HART Electronics Module | HART transmitter electronics replacement |
| Honeywell 50049849-503 | SmartLine DE Electronics Module | Digital Enhanced transmitter electronics replacement |
| Honeywell 50049849-507 | SmartLine FOUNDATION Fieldbus Electronics Module | FOUNDATION Fieldbus transmitter replacement |
| Honeywell 50049915-001 | SmartLine External Zero, Span and Configuration Buttons | External transmitter configuration and adjustment |
Key Advantages
- Provides local measurement indication for compatible SmartLine pressure transmitters.
- Supports field inspection without depending entirely on remote control system readings.
- Uses a dedicated PWA assembly for the Basic Display configuration.
- Separates the local display function from the main transmitter electronics.
- Supports maintenance and replacement of existing SmartLine display assemblies.
- Integrates into the transmitter’s designated electronic housing.
- Can be used with compatible SmartLine transmitter electronics configurations.
Technical FAQs
What is the difference between HNWG50049911-001 and 50065674?
HNWG50049911-001 is the Honeywell part number associated with the Basic Display PWA assembly, while 50065674 is the corresponding assembly identification number. Both designations are associated with the SmartLine Basic Display component.
Is the HNWG50049911-001 a complete pressure transmitter?
No. It is a display PWA assembly, not a complete pressure transmitter. It does not independently measure process pressure or provide the transmitter’s main communication functions. Those functions are handled by the sensing element and main electronics assembly of the compatible SmartLine transmitter.
Can the Basic Display be replaced with an Advanced Display?
The SmartLine product family includes separate Basic Display and Advanced Display configurations. The corresponding replacement kit numbers are different: 50049911-501 for the Basic Display and 50049846-501 for the Advanced Display. Compatibility should be checked against the specific transmitter model and electronic housing before changing display configurations.
Does the display assembly determine whether the transmitter uses HART or FOUNDATION Fieldbus?
No. The communication protocol is determined by the transmitter’s main electronics configuration rather than the Basic Display assembly. SmartLine transmitters can use different electronic modules, including HART, DE, and FOUNDATION Fieldbus versions, while the display serves the separate local indication function.