The Fyreye MKII Rate of Rise heat detector (MKII-AHR) uses a thermistor arrangement to sense a quick rise in temperature and also a final threshold temperature of 57°C. The Fyreye fixed heat detector (MKII-AHF) has a single thermistor arrangement that gives an alarm at a temperature of 57°C, where the MKII-AHF/CS90 gives an alarm above 86°C.
| Model | MKII-AHF | MKII-AHF/B | MKII-AHF/CS90 | MKII-AHF/CS90/B | MKII-AHR | MKII-AHR/B |
|---|---|---|---|---|---|---|
| Part No | 80-214 | 80-214/B | 80-218 | 80-218/B | 80-212 | 80-212/B |
| Detector Class | Fixed Heat Only A2S | Fixed Heat Only CS | Rate of Rise & Fixed Heat Detector A1R |
|||
| Design Standard | EN54 part 5 | EN54 part 5 | EN54 part 5 | |||
| Approval | LPCB | |||||
| Operating Voltage | 17 to 28V DC | |||||
| Quiescent Current | 500μA | |||||
| Alarm Current @ 24Vdc | 5mA | |||||
| Operating Temp. (°C) | -10 to +50°C | -10 to +80°C | -10 to +50°C | |||
| Min. Continuous Temp | 0°C | |||||
| Max. Humidity | 95% RH non-condensing | |||||
| Alarm Condition | Fixed heat trigger @57°C | Fixed heat trigger @ 90°C | Rate of rise or fixed heat trigger @ 57°C | |||
| Coverage | 50m² | 50m² | 50m² | |||
| IP Rating | IP43 | |||||
| Start-up Time | 10 Seconds | |||||
| Size (with Base) | 100 x 49 mm | 100 x 49 mm | 100 x 49 mm | |||
| Weight (with Base) | 75g (133g) | |||||
| Remote Output | 5mA at 24VDC | |||||
