Product Details
The Honeywell HNS 50049911-001, also cataloged as the 50049911-001 Transmitter Display Module (Basic Display PWA Assy Revision 1.030000), operates as a dedicated hardware component for local process variable visualization and transmitter diagnostic execution within Honeywell SmartLine / ST 3000 transmitter field electronics.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | HNS 50049911-001 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 2.0 kg (Shipping Weight) |
| Operating Temp | -40 deg C to +85 deg C |
| Power Consumption | Powered via transmitter internal loop voltage supply |
| Module Type | Basic Display PWA Assembly |
| Component Revision | Revision 1.030000 |
| Display Function | Local process variable, units, and diagnostic code display |
4-20 mA HART Loop Protocol and Channel-to-Channel Isolation
The module interfaces directly with the primary transmitter sensor board via isolated internal multi-pin headers. Dedicated internal galvanic isolation barriers protect the display processing logic from loop power surges and high-frequency noise induced on external field wiring. The display assembly decodes 4-20 mA HART loop protocol digital telemetry to render real-time PV values, engineering units, and diagnostic alarm statuses without interfering with loop current modulation or introducing signal distortion onto the analog circuit.
Frequently Asked Questions
Q: Can the HNS 50049911-001 display module be replaced in the field without removing the transmitter from service?
A: Yes, provided the transmitter electronics housing cover is removed in a non-hazardous environment or under hot-work permit conditions; the display module plugs directly into the transmitter main board header pins.
Q: How does the display assembly draw operating power?
A: The display circuit draws low-power auxiliary current directly from the internal transmitter power supply board without exceeding the lower threshold of the 4-20 mA loop current.
Q: What indicates compatibility between hardware revisions during module replacement?
A: Replacement units must match the physical pin configuration and firmware revision thresholds (Revision 1.030000 family) to maintain correct communication with the base transmitter main board.
Field Installation Guidelines
- Isolate field power to the transmitter before unscrewing the housing end-cap to access the internal display compartment.
- Align the multi-pin header connector on the rear of the display board with the mating socket on the main electronic assembly and press straight in to prevent pin bending.
- Ensure the rubber O-ring seal on the transmitter enclosure is intact and free of debris before threading the viewing glass cover back on.
- Tighten the enclosure cover until fully seated against the housing body to maintain NEMA 4X / IP67 ingress protection and flameproof enclosure integrity.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Comprehensive Guide to Instrumentation and Control (I&C) Design Basis
Instrumentation and Control (I&C) Design Basis serves as the foundational technical document for modern plant engineering. Project teams rely on this master specification to govern engineering deliverables across front-end engineering design (FEED) and detailed execution phases. A well-constructed I&C design basis ensures seamless integration among field instrumentation, safety systems, and main control systems. Furthermore, establishing clear technical standards early mitigates execution risks and prevents costly re-engineering during plant commissioning.
The Shift to Flexible IO Modules in Modern Industrial Automation
Traditional control systems rely on dedicated Input Output (IO) cards for industrial automation. Each conventional module processes a single signal type, such as Digital Input (DI), Digital Output (DO), Analog Input (AI), or Analog Output (AO). A standard 16-channel card accepts only one specific channel type across all ports. This inflexible hardware design often creates severe engineering bottlenecks during project execution. Engineers frequently must install entirely new cards to accommodate a single extra sensor. Consequently, late design changes increase control cabinet space requirements and drive up project costs.
DCS Commissioning Steps in Industrial Automation Projects
Commissioning a Distributed Control System (DCS) represents a crucial milestone when deploying modern process automation infrastructure. Field engineers must execute systematic verification steps to transition complex control hardware from static installation to dynamic plant control. Proper commissioning ensures that controllers, I/O modules, network switches, and HMI software operate in strict compliance with engineering design specifications before introducing live process fluids.