Flame Safeguard BPZ:LFS1.21A1

Siemens Flame Safeguard LFS1.21A1

The Siemens LFS1.21A1 is a flame safeguard (burner sequence controller) approved for continuous supervision of oil and gas flames, working with an ionization probe or the RAR9 photocell detector for oil firing, and with UV flame detectors such as the QRA2, QRA4.U and QRA10 series for gas operation. It provides a DC 0-10V display output plus potential-free double-insulated signal contacts, is rated IP40 for an operating temperature of -20°C to +60°C, and runs on a 120V~, 50-60Hz supply — the North American voltage variant of the LFS1 series, approved to CE-0085CQ0369 and CSA. Manufactured by Siemens AG, Rastatt, Germany, and supplied by R.K. Instruments & Controls.