MSA GasGard XL Instrucciones Para El Usuario página 6

2 Description
2 Description
The general-purpose control system enables:
• Combustible gas monitoring
○ for protecting operational plants and workers by monitoring atmospheres for potentially explosive
gases/vapors in air before they reach the lower explosion limit and by activating alarms and initiating risk
aversion measures.
• Oxygen monitoring
○ for protecting individuals by monitoring the atmosphere for oxygen deficiency or oxygen enrichment.
• Toxic gas monitoring
○ for protecting individuals by continuously monitoring the atmosphere for toxic gas concentrations.
NOTE: An alarm activates if set limit values are reached (e.g. minimum/ maximum concentration in the atmosphere).
Typical applications are:
• Chemical and petrochemical industry
• Paint and solvent industry
• Gas-processing industry
• Municipal areas.
2.1 Control Unit
Figure 1 Enclosure
1 Power Supply
2 Channel Relay Board
3 Channel Board
4 Sensor Extension Board
2.1.1 Wall Mount Enclosure
The Control Unit:
• is housed in an ABS enclosure in accordance with IP 56 and NEMA 4X
• dimensions are 515 mm x 277 mm x 129 mm (20 x 11 x 5 inches)
• cable entry points are not provided, but are predesigned on the bottom of the enclosure (0.75" or M20)
• front panel is molded with predesigned holes for fully equipped configuration (eight channels)
• is mounted by four screws (1/4 - 20 or M6).
7
5 Cable entries
6 Backup Battery
7 Enclosure with mounting holes
GasGard XL US