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2000 Fire Door-Fan Manual updated 2002-05-28 Page 10 of 58
OR, DM-1 digital gauge for models J64
OR, DM-1 digital gauge
The digital gauge can be hand held and used to
measure static pressure, room pressure and flow
pressure. Connect a tube from the panel to the right
hand port of the DM-1 to get room pressure. Then
connect a tube from the DM-1 to the blower to get
flow pressure.