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If the board receives the microamp signal but fails to keep the main valve energized
Extended Reach: The factory-terminated 32-foot shielded cable reduces the need for field-splicing
The HH18HA286 is typically an automatic reset temperature switch
which enhances reliability under high-cycle conditions
Siemens Combustion QRA4M.U Scanner L99H008 If the board receives theThe Siemens Combustion QRA4M. U is a high sensitivity UV flame scanner engineered for the rigorous supervision of gas or oil flames and ignition spark proving in intermittent burner operations. As a veteran grade flame detector, this sensor utilizes a specialized UV sensitive cell with two electrodes designed to ignite upon detecting radiation within the 190 to 270 nm spectral range. This ignition triggers the necessary current in the flame detector
US$ 149.00
US$ 53.00
US$ 26.00