123th-05

Three-channel methane signalling device 123ÒÕ 05

123ÒÕ 05 Automatic three-channel signalling device is designed for continuous control of methane leak in motor compartments, gas cylinder cells and in gas and gas-diesel bus compartments.

Signalling device monitors methane concentration and gives sound and light signal in case of exceeding methane signal set concentrations.

Specifications

Principle of measurement	thermochemical sensor
Range of conversion	0 – v.p.2,5 % (0-50 % MFDCL)
Permissible main absolute conversion error limits	± v.p.0,25 % (5% MFDCL)
Limits of permissible main absolute error of threshold devices operation	± v.p.0,05 %
Values for signal concentrations when sound and light (red light) signalling is given: «Threshold 1»	v.p.1 % (20 % MFDCL)
«Threshold 2»	v.p.2 % (40 % MFDCL)
Signalling threshold devices operating time	15 sec
Supply	(24 (+6/—2,4) V D/C
Power intake	10 VA
Time of operation without controlling and tuning threshold devices	1 year or 25000 km of the bus run
Monitored air mix supply	convectional
Light signalling:
- switching in «24 V»	green light
- break or burning-out ×İ «Failure ×İ»	yellow light
Weight, not more than	1,0 kg
Dimensions, not more than:
- signalling unit	110´160´55 mm
- measuring converters	100´65´35 mm
Range of operating temperatures:
- for signalling unit	from – 45 to + 40 ⁰Ñ
- for measuring converters	from – 45 to + 70 ⁰Ñ