Infra Red Ember Detectors

Home Product Infra Red Ember Detectors

The 246-1 detector is a sensitive optical sensor designed to detect, in the presence of ambient light, the radiant energy emitted by burning or glowing embers being transported on conveyor belts. Conveyor belts move material from one process to the next and the ember detectors are used to detect embers or fires moving on the conveyor before they reach the subsequent processing machinery or storage hoppers

  • 80 ms response time.
  • User adjustable sensitivity range of 10 to 50 μW/cm2
  • NEMA 4 rated enclosure for indoor and outdoor applications.
  • Simple mounting flange makes it easy to install and clean detectors.
  • Optional air-purge mounting flange and compressor to aid lens maintenance.
  • Flexible output options can be combined to meet application


  • 3, 4 or 6 Wire Interface
  • Dry Contacts or 24 V
  • Latching or 1 Second Pulse
  • Internal EOL Options (Dry Contacts Only)
Spectral Response4.0 – 4.6 microns
Sensitivity10 – 50 μW/cm2
Detection Range30 cm – 1 m / 12” – 39”
Response Time80 ms
Field of View90°
Built-In TestNone
Temperature Range-40oC to 60oC (-40oF to 140oF)
HumidityUp to 85%
Materials (Enclosure)Coated Aluminum Body, Stainless Steel 303 Lens Holder
MountingCustom Flange, Optional Custom Air Purge Flange
Dimensions (Cubic)86 mm x 86 mm x 82 mm / 3.4” x 3.4” x 3.2”
Weight2.2 kg / 1.0 lb
Water and DustNEMA 4Electrical Specifications
Operating Voltage20 – 28 VDC
Power Consumption15 mA operating, 35 mA alarm
Wiring18 AWG, 7 conductors
Electrical Interface3, 4 or 6 Wire Interfaces
RelayDry Contacts, rated for 24VDC, 1 A (latching or 1 second pulse)
Electrical24 VDC (latching or 1 second pulse)Approvals