Product Details
Configured for multiplexing high-density thermocouple signal channels in Honeywell process automation architectures, the Honeywell 51301874-100 (51301874-100 Thermocouple Low Energy Mux Board) provides direct physical/electrical execution.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 51301874-100 |
| Brand | Honeywell |
| Origin | USA |
| Operating Temp | -40 to +70 deg C |
| Power Consumption | Passive multiplexer board operating on 24 VDC bus |
| Input Voltage | 24 VDC |
| Output Voltage | 24 VDC |
| Storage Temp | -40 to +85 deg C |
| Channel Capacity | Switches up to 16 thermocouple inputs |
| Thermocouple Types | Type J, K, T, S, E, and R |
| System Interface | Low Energy Process Interface Unit (LEPIU) CCFA |
Cold Junction Compensation (CJC) & Channel Isolation
The multiplexer board routes up to 16 thermocouple sensor inputs directly into the Low Energy Process Interface Unit (LEPIU) CCFA assembly for precise signal linearization across Type J, K, T, S, E, and R thermocouple curves. High-grade board-level cold junction compensation (CJC) reference circuits correct for ambient thermal gradients across the field terminal termination zone. Integrated channel-to-channel isolation prevents ground loop current propagation and suppresses low-level millivolt signal interference during high-speed analog channel switching.
Frequently Asked Questions
Q: Which thermocouple sensor types can be processed by the 51301874-100 multiplexer board?
A: The board provides routing and linearization compatibility for Type J, K, T, S, E, and R thermocouples.
Q: What interface module does the 51301874-100 board connect with for analog processing?
A: The board switches millivolt signals directly to the Low Energy Process Interface Unit (LEPIU) CCFA assembly.
Q: What are the environmental operating temperature limits for cabinet installation?
A: The hardware operates continuously within ambient enclosure temperatures ranging from -40 deg C to +70 deg C.
Field Installation Guidelines
- De-energize the 24 VDC system power rail before inserting or removing the multiplexer board from the rack slot.
- Connect thermocouple lead wires to designated terminal points, observing polarity and using extension wires matching the specific thermocouple type.
- Secure all field wiring drain shields to the main panel earth ground bus bar to prevent common-mode noise corruption on millivolt inputs.
- Ensure CJC thermal sensors on the termination block remain unobstructed and free from localized heating sources.
- Inspect edge connectors for correct mechanical alignment before fully seating retaining fasteners.
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
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