Features:

• Flame Detectors are used with RA890G devices or R7249A, R7290A, R7749B and R7849A,B Amplifiers and the appropriate Honeywell controls.
• C7035A has an integral collar threaded (internal 1-11-1/2 NPSM) for mounting on a one-inch sight pipe.
• C7035A housing meets Underwriters Laboratories Inc. requirements for rain tightness and complies with
  NEMA enclosure standards, types 4 and 4X.
• Properly installed, pressure rated for 5 psi.
• C7035A ultraviolet radiation sensor tube is field replaceable.
• Flame Detectors can be wired in parallel for difficult flame sighting installations. 

Product Specifications:

• Flame Detection: End viewing.
• Operating Temperature Ratings:  0°F to 250°F (-18°C to +121°C), or -40°F to 250°F (-40°C to +121°C), depending on model.
• Maximum Pressure Rating: 5 psi (34.5 kPa).
• Mounting: Collar with 1-11-1/2 NPSM internal threads for mounting on a 1 in. sight pipe. (The DIN approved C7035A1064 has 1-11 BSP.P1 threads.)
• Wiring Connections: Two 6 ft. (1.83 m), color-coded
  • Silicon Rubber Insulated 18 AWG, NEC Class 1 leadwires rated for 302°F (150°C).
  • The rear of the detector has 1/2-14 NPSM internal threads for connecting to a conduit. The DIN-approved C7035A1080 has 10 foot (3 Meter) leadwire rated for 600°F (316°C).