Product Details
The Foxboro N0309YK, also cataloged as the N0309YK Isolated 2-Wire R/V Converter, operates as a dedicated hardware component for signal isolation and resistance/voltage conversion within Foxboro DCS field interface loops. Configured for high-noise process environments, it converts 4-20 mA current loop input signals into isolated 0-10 VDC output signals across selectable voltage spans.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | N0309YK |
| Brand | Foxboro |
| Origin | USA |
| Weight | 0.5 kg |
| Dimensions | 10 x 5 x 2 cm |
| Operating Temp | -40 deg C to +85 deg C |
| Power Consumption | Low power loop-powered configuration (0.5 W max) |
| Input Signal | 4-20 mA current loop |
| Input Voltage Spans | 0-100 mV to 0-10 VDC (Special: 0-5 V, 0-15 V, 0-30 V, 0-60 V, 0-120 V) |
| Output Signal | 0-10 VDC |
| Measurement Accuracy | +/-0.25% of span (+/-0.1% linearity) |
| Isolation & Protection | Full input-to-output isolation, reverse polarity protection |
| Enclosure Rating | NEMA 4X (dustproof, waterproof, corrosion-resistant) |
Channel-to-Channel Isolation and Loop Protocol Connectivity
The Foxboro N0309YK incorporates galvanic input-to-output isolation circuits to break ground loops and reject common-mode noise across 4-20 mA HART loop protocol lines. High-dielectric isolation barriers prevent voltage transients from compromising signal linearity, maintaining a +/-0.25% accuracy across temperature variations while preventing thermal reference drift at cold junction compensation (CJC) points.
Frequently Asked Questions
Q: How is the N0309YK converter powered?
A: The module utilizes a 2-wire loop-powered architecture, drawing operating current directly from the connected input loop without requiring external auxiliary AC power lines.
Q: What protection features are integrated into the converter input terminals?
A: The input circuitry includes reverse polarity protection alongside full input-to-output galvanic isolation to prevent reverse-wiring damage and electrical noise transfer.
Field Installation Guidelines
Mount the N0309YK enclosure onto a standard DIN rail or flat panel surface inside the control panel or field junction enclosure. For standalone outdoor installations, verify that the NEMA 4X housing cover screws and gland fittings are tightened securely to prevent moisture and corrosive gas ingress.
Route 4-20 mA signal conductors through grounded, shielded twisted-pair cables, keeping input wiring isolated from AC power conductors. Ensure that the cabinet grounding point bonds directly to the plant earth network and that panel conduit fittings maintain a minimum of 5 full threads of engagement on NPT connection ports.
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.
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