Description
1. Unboxing & Physical Snapshot
- Model & Brand: Westinghouse / Emerson (WDPF / Ovation Control Architecture), Part Number 1C31194G02 (Valve Positioner Module)
- Physical Dimensions: 6.5 inches x 2.0 inches x 8.5 inches (165 mm x 51 mm x 216 mm)
- Estimated Shipping Weight: 1.8 lbs (0.82 kg) packed in heavy-duty anti-static and shock-absorbing cushioning
- What’s in the Box: Electronic valve positioner module assembly, metallized ESD shielding pouch, calibration slip, and factory traceability documentation (pneumatic fitting adapters sold separately)
2. Product Introduction
Designed to interface directly with final control element actuators across heavy industrial processing plants, this valve positioner module governs precise media flow regulation. (—which requires exact calibration to ensure actuator stems respond linearly to controller analog commands). Technicians slide the assembly into dedicated sub-rack card guides, engaging secure locking latches to anchor the edge fingers against the backplane bus.
Within the distributed control architecture, this hardware transforms digital loop signals into accurate pneumatic or electronic positioning commands. Passive convective cooling paths surrounding the card chassis dictate strict adherence to internal cabinet clearance parameters to prevent thermal drift during long operating campaigns.
3. Core Technical Specifications
| Parameter | Value |
| Form Factor | Industrial plugin control module |
| Operating Voltage | +24 VDC loop / backplane powered |
| Power Consumption | 5.5 Watts nominal |
| Heat Dissipation | 18.8 BTU/hr |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Storage Temperature | -40°C to 85°C (-40°F to 185°F) |
| Relative Humidity | 5% to 95% non-condensing |
| Signal Interface | Precision analog valve command loop |
| Faceplate Finish | Anodized aluminum with extraction levers |
| Physical Weight | 1.2 lbs (module assembly only) |
4. Global Compliance & Industry Certifications
Safety inspectors mandate complete documentation packages for all final control element hardware integrated into continuous plant loops. Expected compliance markers for this tier of industrial hardware include the CE Mark for European conformity and UL/cUL Listed status for industrial control equipment.
The UL designation verifies that internal signal isolation barriers satisfy rigorous dielectric standards, preventing destructive voltage transfer from field loops to the primary system bus. (—a primary checkpoint during facility insurance risk assessments).
Audit Note: Verify specific lot certifications and date codes directly with the OEM prior to commissioning the hardware into safety-instrumented shutdown systems.
5. Long-Term Storage & Asset Preservation Guide
Spare positioner cards frequently spend years on warehouse shelves awaiting scheduled plant turnarounds. Protect this asset using proper storage protocols:
- Keep the module sealed inside its original metallized anti-static (ESD) shielding bag to isolate delicate semiconductor components from airborne chemical pollutants and moisture.
- Keep the warehouse climate controlled so that relative humidity remains strictly below 60%, preventing micro-oxidation on the gold-plated connector edge fingers and printed traces.
- For electronic assemblies holding vintage electrolytic capacitors sitting unused past a 3-year window, instrumentation technicians must perform a controlled voltage-reforming procedure on a test bench before energizing live control loops.
6. Physical Installation Prerequisites
- Maintain a minimum vertical clearance of 60 mm above and below the card cage to permit unhindered convective cooling airflow.
- Bolt the chassis backplane directly to a clean, low-impedance ground bus bar using heavy-gauge copper straps to minimize electrical noise interference.
- Inspect the physical backplane keying slots prior to insertion to confirm correct part matching and avoid bending terminal pins.
7. Buyer’s FAQ (Logistics & Compliance Focus)
Q: What Harmonized System (HS) code applies to the international import of this positioner module?
A: Industrial electronic controller and positioner modules typically classify under HS code 8538.90 (parts suitable for use solely or principally with control apparatus). Verify final classification parameters with your customs broker.
Q: Does the declared Country of Origin (COO) affect export control screenings?
A: Yes, tracking the verified COO dictates whether specific Export Administration Regulations (EAR) apply during cross-border freight transfers.
Q: What level of transit insurance is recommended for legacy module shipments?
A: Full replacement-value shipping insurance is mandatory because discontinued hardware cannot be quickly replaced if damaged in transit.
Q: Do surplus modules ship with pre-loaded factory firmware?
A: Units normally carry a baseline operational image; controls engineers must flash the precise software version matching the site’s configuration baseline during setup.
