The model 20-20 MI is a high-performance and highreliability,
self-contained, triple spectrum flame
detector. This detector is specially designed for
industrial applications with the highest immunity to
false alarms. The patented triple IR design offers two to
three times the detection distance of any conventional
IR or UV/IR detector.
The patented triple IR scans for oscillating IR radiation
(1 to 10 Hz) in the spectral bands ranging from 4.0 to 5.0
microns. Each sensor band pass has been selected to
ensure the greatest degree of spectral matching to the
radiant energy emissions of fire, and the lowest degree
of matching to non-fire stimuli. This highly advanced
detector uses a programmed algorithm, which checks
the ratio and correlation of data received by the three
sensors. Only detection of radiation emissions matching
the spectral fingerprint of fire will produce an alarm,
making the 20-20 MI immune to false alarms.
The M.T.B.F. (Mean time between failures) is calculated
to be 100,000 hours (11+ years). This outstanding
performance permits a 3-year warranty on the entire
detector, not just the sensors.
• Triple-spectrum design
• 80% less power consumption
• Highly immune to false alarms
• Sensitivity selection
• User-programmable configuration
• Automatic & manual built-in test
• Standard 4-wire connection
• M.T.B.F. minimum 100,000 hours
Dimensions: 122 x 100 x 65 mm
Weight: Aluminium: 0.5 Kg
**Stainless Steel: 1.2 Kg
Spectral response: Three IR band channels
Detection range: 1 sq.ft. gasoline fire @ 40m*
1 sq.ft. n-heptane fire @ 40m*
1 sq.ft. diesel oil fire @ 25m*
1 sq.ft. 95% alcohol fire @ 30m*
1 sq.ft. JP4 fire @ 25m*
* Highest sensitivity setting.
Response time: Typical 5 seconds. Adjustable
time delay up to 30 seconds.
Four sensitivity ranges set by software for gasoline pan
fire of 1x1 sq.ft.:
Sensitivity range Detection range
1 33ft. (10m)
2 66 ft. (20m)
3 100ft. (30m)
4 133ft. (40m)
Field of view: 100° horizontal, 100° vertical.
Built-in-test: Manual & automatic BIT.
Temperature range: Operating: - 40°F to 160°F
Storage: - 65°F to 185°F
Humidity: Relative humidity of up to 90% for the operational temperature.
** carries additional charge.
Operating voltage: 18-32 Vdc
Power consumption: Max. mA in standby
Max. mA in alarm
12-wire electrical connector (suitable connector will be supplied).
Option 12-wire cable (for junction box connection).
Electrical input protection:
Complete electrical interface protection against reversed polarity voltage, surges & spikes according to MIL-STD- 1275.