AVcomm Developments Ltd.


        WARNING LIGHT CONTROL BOX TYPE GL501/U

        
This unit is for use in the construction of Permit aircraft to provide three electrical functions usually required to improve the safety monitoring of the aircraft's engine systems.

It provides :-

a)        A warning indication of the aircraft battery state and is set to give an alarm if the generator cannot maintain the battery voltage between the limits 12.5 to 15.9 volts. A low voltage is signified by a continuous red light and a high voltage by the light flashing.

b)        A warning indication when the starter motor is energised or is engaged and is being driven by the engine.

c)        A fuel flow warning. This can be energised in two ways depending on the sensor provided. For the
EUROPA and other low wing aircraft, a fuel pressure switch type GL502 provides a warning if the fuel pressure falls below 0.25 Bar. For the KITFOX a fuel level unit type GL503 provides an indication if the fuel level starts to drop in the header tank.

The unit utilises 6 volt low current long life bulbs which are operated at constant brightness irrespective of battery state and should have an MTBF in excess of 20,000 Hours.

Specification

size 55mm * 42mm * 27mm + mounting lugs
weight 60 gms
operating voltage 8 - 24 volts 120 mA (all lamps on)
temp range -20 to +50 degrees celsius

issue 3 Aug 2000