Gas separation: processes – With recording or signaling condition
Patent
1996-11-25
1998-06-30
Smith, Duane S.
Gas separation: processes
With recording or signaling condition
55271, 55272, 55274, 55DIG34, 95 26, B01D 4600
Patent
active
057727325
ABSTRACT:
A monitoring apparatus for alerting an operator to the need to change a temperature control system filter includes a mechanism for selecting and setting a primary period of filter use to assure replacement before the filter becomes clogged; a mechanism for counting out the selected primary period; a mechanism for activating a signalling device to signal the operator to replace the filter, absent replacement of the filter; a mechanism for sensing replacement of the filter; and a mechanism for resetting the mechanism for counting to begin the counting out the selected primary period again upon replacement of the filter. The apparatus preferably additionally includes a mechanism for counting out a secondary period measured from the end of the primary period; and a mechanism for shutting down the system at the end of the secondary period absent replacement of the filter. A method of monitoring the filter of an air temperature control system with this apparatus includes the steps of the operator selecting and setting a primary period of filter use appropriate to assure filter replacement before the filter becomes clogged; the apparatus counting out the selected primary period; the apparatus activating the signalling device at the end of the primary period to signal the operator to replace the filter.
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Buckley Tommy M.
James Terry Lynn
Smith Duane S.
Van Der Wall Robert J.
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