Product Details
Configured for optical flame detection and continuous signal conditioning in industrial combustion systems, the Honeywell R7861A1034/U (R7861A Dynamic Self-Check UV Amplifier) provides direct physical/electrical execution for ultraviolet sensor monitoring across 7800 Series burner control platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | R7861A1034/U |
| Brand | Honeywell |
| Origin | USA |
| Weight | Approx. 0.25 kg (Shipping weight: 2.00 kg) |
| Dimensions | Standard 7800 Series plug-in module housing |
| Operating Temp | -40 deg C to +60 deg C (-40 deg F to +140 deg F) |
| Power Consumption | Powered via 7800 Series backplane bus |
| Sensor Interface | C7061 Dynamic Self-Check UV Flame Detectors |
| Flame Failure Response Time | 0.8 s or 3.0 s (configuration dependent) |
| Flame Signal Output | 0.0 VDC to 5.0 VDC test jack signal |
| Mounting Type | Edge connector plug-in on 7800 Series Relay Module |
Channel-to-Channel Isolation and Analog Signal Conditioning
The R7861A1034/U incorporates internal solid-state signal amplification coupled with a dynamic self-check circuit. The module periodically pulses the shutter mechanism of an associated C7061 sensor to verify component integrity without interrupting flame monitoring loops. High galvanic channel-to-channel isolation prevents electrical noise and ground loops on field sensor leads from distorting the 0.0 VDC to 5.0 VDC flame strength telemetry or coupling into adjacent process loops executing 4-20 mA HART loop protocol monitoring.
Frequently Asked Questions
Q: How is the R7861A1034/U protected against incorrect insertion into a 7800 Series relay module?
A: The module printed circuit board edge connector is keyed to match specific relay module slots, preventing improper insertion or orientation.
Q: What action does the burner control system take if an internal failure occurs within the amplifier circuit?
A: The dynamic self-check function continuously audits detector and amplifier circuitry; any component failure immediately triggers a safety lockout sequence on the primary 7800 Series relay module.
Q: How can field engineers measure flame signal strength without disturbing active wiring?
A: The front panel includes dedicated flame signal test jacks designed to accept standard microammeter/voltmeter probes for reading the 0.0 VDC to 5.0 VDC signal.
Field Installation Guidelines
- Isolate all main power supplies to the 7800 Series relay module before installing or removing the amplifier unit.
- Align the keyed printed circuit board edge connector with the relay module card slot and push firmly until fully seated.
- Route UV sensor lead wires in dedicated grounded metallic conduit separate from high-voltage ignition cables and power wiring.
- Verify flame signal voltage at the front test jacks during burner commissioning to ensure signal levels consistently exceed minimum operational thresholds.
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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