Bộ điều khiển đầu đốt Honeywell RA890F1304

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Bộ điều khiển đầu đốt Honeywell RA890F1304

The RA890F Protectorelay™ Primary Control is a nonprogramming, amplifying relay that provides solid state electronic flame safeguard protection for industrial and commercial gas, oil, or combination gas-oil burners
HONEYWELL
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Bộ điều khiển đầu đốt Honeywell RA890F1304
  • Employs rectification principle of electronic flame detection using a flame rod, rectifying photocell, or C7012A,C Ultraviolet Flame Detector.
  • Clipping pilot link jumper wire permits use with standing pilots
  • Can directly replace RA890E and mount on same Q270A Subbase
  • Solid state circuitry eliminates vacuum tube replacement and increases resistance to vibration. Power application not required during Off cycle; no tube to warm up before starting.
  • Push-to-reset safety switch in dust-resistant enclosure
  • Built-in protection against ignition crossover in flame rod systems
  • Does not start if flame-simulating failure occurs in flame detector circuit
  • Automatic safety shutdown if flame fails on start, or if flame not re-established after flame failure
  • Flame signal current is directly measurable at test jack
  • Line or 24 volt, automatic or manual controller can be used. (Manual controller must open circuit on either power or flame failure.)
  • Captive mounting screws allow easy mounting and removal. Thermoplastic mounting base
  • Optional alarm circuit indicates safety shutdown.
  • RA890F1304
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  • 1140
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