Honeywell R7497A Flame Safeguard Relay

Honeywell R7497A Flame Safeguard Relay — Safety Shutdown for Saudi Industrial Burner Management Systems

The Honeywell R7497A is a flame safeguard relay providing complete burner management and safety shutdown functions for industrial burners in Saudi Arabia. From desalination plant boilers to industrial process heaters, the R7497A provides a complete, proven safety system that meets the strict requirements of Saudi Aramco, SEC, and SABIC engineering standards.

Saudi Arabia's industrial facilities require flame safeguard systems that are fail-safe, self-testing, and capable of SIL 2 rated performance for critical burner safety applications. The R7497A meets these requirements with its self-checking flame detection circuit and proven track record across Saudi Arabian industrial facilities.

Key Features

Self-Checking Flame Detection: Internal circuit performs continuous flame detection self-check — flame signal must be present within 10 seconds of pilot ignition or the relay initiates safety shutdown.

Complete Burner Sequence: Provides timed sequence for pilot trial-for-ignition, main flame establishment, and running flame confirmation — required sequence for Saudi Aramco and SABIC safety approval.

Permanent Pilot: Continuous pilot flame throughout the running period — required by Saudi Aramco engineering standards for gas-fired burners above 1 MW firing rate.

Manual Reset Lockout: After safety lockout, the R7497A requires manual reset before re-ignition — prevents automatic restart after flame loss, requiring operator investigation and acknowledgment.

Applications in Saudi Arabia

Marafiq Desalination Plant boilers: R7497A controls boiler burners in Marafiq's Jubail and Ras Al Zour desalination plants — required flame safeguard for Saudi water production facilities.

Aramco Gas Oil Heaters: Pipeline trace heating system burners — R7497A provides flame safeguard for gas-fired heating systems keeping pipelines above pour point temperature.

Technical Specifications

Frequently Asked Questions

Q1: How do I reset the R7497A after lockout? After a safety lockout, press and hold the reset button for 2 seconds to reset the relay. Before resetting, always identify and correct the root cause — common lockout causes are insufficient pilot flame, dirty flame rod, or interrupted gas supply.

Q2: What flame detector is recommended with R7497A in Saudi Arabia? For gas burners: flame rod (R7842A compatible). For oil or combination burners: C7962 UV scanner. RAZZ supplies complete matched systems including relay, scanner/rod, and ignition transformer.