IR-11.1 / IR-13.1
Infrared spark sensor
The IR-11.1 infrared spark sensor (1-arm optical fiber) and IR-13.1 (3-arm optical fiber) detect sparks and flames in closed, potentially explosive systems. The maximum of its spectral sensitivity is at about 830 nm. The devices are well suited for sparks and flames with temperatures > 800°C. These ATEX certified devices are designed for installation in parts of the system where it is completely dark and where no extraneous light is expected. Daylight contains infrared portions which the devices will respond to and thus can cause false tripping to occur.
Applications for IR-11.1 and IR-13.1 are, for example, in electronic spark extinguishing equipment 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 sensors have relay outputs for malfunction and alarm and internal monitoring of the operating voltage.
IR-23.1 – Data and Facts
| Operating voltage |
18…30VDC=
|
| Operating current without fault relay |
< 250µA
|
| Spectral sensitivity |
ca. 700…1000nm=
|
| Range (spark temperature 800°C) |
200mm
|
| viewing range |
80°
|
| Control module temperature range |
-20…+70°C
|
| Fiber optic temperature range |
-20…+200°C
|
| Dimensions Control module | |
| Without optical fiber |
125 x 80 x 57 mm
|
| Dimensions Optical fiber (standard) | |
| (andere Längen auf Anfrage) |
1m, 1,5m, 2m, 3m, Ø: 7mm
|
| Sensitivity | |
| (set with sparks with a temperature of approx. 800°C) |
500 mm
|
Options and special features
| – IR-11.1: 1-arm optical fiber, IR-13.1: 3-arm optical fiber – ATEX Certification for Category 3GD (control module), fiber optics for Zone 0/20, – LWL für Zone 0/20 geeignet – Relay outputs (potential-free changeover contact – Photo MOS relay) for malfunction and alarm, internal monitoring of the operating voltage, malfunction at Vb < 16.5VDC |
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