Technical Data - Menvier Security MBD50R Bedienungsanleitung

10. Beam clearance.
Most reflective beams produce a focused beam to a reflector on the opposite side of the protected area. The
returned signal is then sampled and any obscuration calculated. If there are highly reflective surfaces, or
objects near the beam path, there may be a possibility that some of the beam energy is inadvertently reflected
into the receiver, rather than the reflector. This may increase the possibility of faults or false alarms. Hence the
importance of following the recommendations in Section 5 of this installation guide.
It is for this reason we recommended that the beam path should be surveyed to confirm suitability that a
reflective beam can be used. As a rule of thumb there should be at least 0.5m diameter clearance down the
entire beam path. If there are highly reflective objects within 1 metre diameter of the beam path for the first 20
metres (for the MAB100R) beam path, then tests should be carried our to see if the beam is suitable.
First 20 metres
1 metre
diameter
clearance
Beam

11. Technical Data.

Operating Range MBD50R
•
Operating Range MBD100R
•
Quiescent Supply Voltage
•
Quiescent Current (no lamp illuminated)
•
Power Up Time
•
Power Down Time to Reset
•
Operating Temperature
•
Tolerance to Beam Misalignment at 35%
•
Fire Alarm Thresholds
•
Optical Wavelength
•
Head Maximum Size
•
Weight
•
22318.31.01 21.04.06
0.5 metre diameter clearance down rest of beam path
5 to 50 metres
50 to 100 metres
From fire panel (recommended > 20V)
<3mA
>20 seconds
<2 seconds
-30°C to 55°C (not suitable for cold stores or areas with
condensation)
Detector ± 0.8°, Prism ± 5.0°
2.50dB (25%), 3.74dB (35%), 6.02dB (50%)
880nm
Width 130mm, Height 210mm, Depth 120mm
740 gm
10
Reflector(s)