Gas detection system for toxic and explosive gases (35 pages)
Summary of Contents for Siemens QRB1 Series
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QRB1... Photoresistive QRB3... Flame Detectors Photoresistive detectors for use with Siemens burner controls, for the supervi- sion of oil flames in the visible light spectrum. The QRB… are used primarily in connection with oil burner controls in intermit- tent operation.
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Warning notes To avoid injury to persons, damage to property or the environment, the following warning notes should be observed! Do not open, interfere with or modify the flame detector! • All activities (mounting, installation and service work, etc.) must be performed by qualified staff •...
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Mechanical design General Compact photoresistive flame detector with infused 2-wire thermoplastic cable. The detector is available with normal sensitivity, high sensitivity, or selected higher sensitivity, with or without flange / clamp or soft plastic plug (refer to «Type summary»). QRB1...A Flame detector without soft plastic plug.
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Type summary QRB1… ¹) These types of flame detectors are not available in all countries! Type reference ¹) Sensitivity / End of cable Accessories casing color (included) QRB1A-A020B40A Without Ferrule QRB1A-A020B40A2 Without Ferrule QRB1A-A033B40B With Ferrule QRB1A-A035B40A Without Ferrule QRB1A-A035B40A1 Without Ferrule QRB1A-A048B70B...
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Type summary (cont´d) QRB1… ¹) These types of flame detectors are not available in all countries! Type reference ¹) Sensitivity / End of cable Accessories casing color (included) QRB1B-A070B40A1 Without Ferrule QRB1B-A070B70A Without Ferrule QRB1B-A070B70A1 Without Ferrule QRB1B-A070B70A2 Without Ferrule QRB1B-A070B70B With Ferrule...
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Ordering When ordering, please give type reference according to «Type summary». QRB1… with plug is always to be ordered without flange / clamp, and vice versa. • QRB1A-A035B40A Example Sensitivity: Normal • Casing length: 50 mm • Visible cable length: 35 cm •...