Infrared spark sensor
The IR-23.1 spark sensor with 3-arm optical fiber detects sparks and flames in closed systems. The infrared spark sensor is well suited for sparks and flames with temperatures > 800°C. The maximum of its spectral sensitivity is at about 830 nm.
This ATEX certified device is designed for installation in parts of the system in which it is completely dark and where no extraneous light is expected. Daylight contains infrared portions which the sensor will respond to and
thus can cause false tripping to occur. Applications for IR-23.1 are, for example, in electronic spark extinguishing units with monitoring units for early detection of fire or explosions. Also everywhere that flammable or smoldering materials are transported mechanically or pneumatically and a risk of fire or explosion exists. The sensor has relay outputs for malfunctions and alarm, integrated test equipment and internal monitoring of the operating voltage.
IR-23.1 – Data and Facts
|Operating current without fault relay||
|Range (spark temperature 800°C)||
|Control module temperature range||
|Fiber optic temperature range||
|Dimensions Control module|
|Without optical fiber||
160 x 100 x 82 mm
|Dimensions Optical fiber (standard)|
|(other lengths on request)||
1m, 1,5m, 2m, 3m, Ø: 10mm
Options and special features
|– Stainless steel weld-on flange with purge air connection
– Integrated test equipment, 3-arm fiber optics
– ATEX Certification for Category 3GD (control module), fiber optics for Zone 0/20
– Control unit: II 3 GD Ex nA tc IIB IIIC IP65 T4 T80°C Gc Dc
– Relay outputs (potential-free changeover contact – Photo-MOS-relay) for fault and alarm
– Internal monitoring of operating voltage, fault with Vb < 16.5VDC
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