Arrgh’s Mark 5 is designed to detect the presence of Hydrogen before it reaches dangerous levels, and detect smoke, inside a room or enclosure. The unit contains output contacts for exhaust fans and alarms.
Arrgh Mark 5
Description
Arrgh’s Mark 5 is designed for unattended battery installations or remote shelters containing lead acid batteries and charging systems where hydrogen gas could be emitted when charging. The lower explosive limit for hydrogen in the atmosphere is 4%. The Mark 5 is designed to turn on an exhaust fan if the gas level reaches 1%, and generate an alarm if the concentration reaches 2%. This alarm consists of local 80db horn, a flashing red LED and a dry contact switch closure for reporting to a remote alarm system.
The photoelectric smoke sensor is designed to detect minute combustion products from smoldering wire insulation, battery cases, and other material normally found in these installations. When smoke is detected, an alarm is emitted from the 80db horn, and a separate dry contact switch closes for reporting to a remote alarm system. At this time, the exhaust fan contact is inhibited in order to deny the fire increased oxygen from outside air. During normal operation and in the absence of an alarm condition, an internal thermostat can turn on the exhaust fan at a preset temperature to reduce heat build-up in the room.
Loss of power to the unit will also generate a dry contact alarm to the remote system. An optional infrared intrusion alarm will trigger a silent dry contact switch closure to the remote system.
Features:
- Operates on AC (85-265 VAC) or, optionally, on DC (17 to 60VDC)
- Automatic operation for activation of an exhaust fan and remote reporting of alarm conditions
- Reliable, highly sensitive and stable solid-state hydrogen sensor combined with a sensitive photoelectric smoke detector module and an internal thermostat
- Local 80db alarm for H2 and smoke
- Simple installation
- Connection by internal punch-down block or external RJ-45 connector
Arrgh Mark 5 brochure
Additional information
Brand | Arrgh |
---|---|
Availability | Midwest/Great Plains, National |
Application | Data Center, Industrial/Outdoor, Telecom, Utility |
Product Type | Monitoring |
Type | Environmental |
Hardware/Software | Appliance |
Sensor Types | H2, Intrusion, Smoke |