Madas Seismic Sensor M90W

Energy Combustion,Ahmedabad importer and suppliers of Madas-Madas make SIESMIC SENSOR. Device that, combined with a sefety valve closes the gas passage for following reasons: - seismic event (with time and frequency analysis on a 3 axes acceleration) - remote control (f.e. gas detector, emergency lockup) The device also includes also a relay alarm exit to be used for remote signals and to stop the power supplies, avoiding, in this case possible fire and explosions sources. The sensor can be electrically connected to a normally closed/open manual reset solenoid valves produced by MADAS also if they arealready installed. The seismic sensor has been tested with positive results by CESI from Seriate (Bergamo - Italy) on a tryaxials vibrating platform according to: ASCE 25-97 (USA) - TS12884 (Turkey). It have to be mounted firmly fixed to an element connected to the ground (wall or brickwork fencing). TECHNICAL DATA • Power supply voltage: 12 Vdc 12 V/50 Hz 24 Vdc 24 V/50 Hz 110 V/50 Hz 230 V/50-60 Hz INSTALLATION The solenoid valve is in conformity with the Directive 94/9/CE (said Directive ATEX 100 a) as device of group II, category 3G and as device of group II, category 3D; for this reason it is suitable to be installed in the zones 2 and 22 as classified in the attachment I to the Directive 99/92/EC. The solenoid valve is not suitable to be used in zones 1 and 21 and, all the more so, in zones 0 and 20 as classified in the already said Directive 99/92/EC. To determine the qualification and the extension of the dangerous zones, see the norm EN 60079-10. WARNING: all installation/wiring/ maintenance work must be carried out by skilled staff. • Electric coil connection • To connect the coil, use a cable type H05RN-F 3X0,75mm² cable outside Ø from 6,2 a 8,1 mm, taking care to ensure that the device has IP65 protection. • Alarm exit relay max. 10A 6 : normally open contact 7 : common contact 8 : normally closed contact • Normally closed contact – Tamper Contact to be used for gas detector connection or for emergency closing button. The contact is clear and it has not to be powered. • Made the connections, re-put the cover (9) being sure that the rubber seal (10) is inside the special hole. The coil for normally closed solenoid valve is also suitable for permanent power supply. The coil should not be touched with bare hands after it has been continuously powered for more than 20 minutes. Before maintenance work, wait for the coil to cool or use suitable protective equipment.