Ashcroft GC30 Skrócona instrukcja obsługi - Strona 2
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differential pressure transducer
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Product Information Page
HVAC Filter Monitoring Application:
This example uses a GC30 differential pressure transmitter with 0 to 1.00 IWC range with two NPN
switches. The transmitter shall be programmed to activate the audible alarm when differential pressure
reaches 0.500 IWC with output 1 switch and to shut down the system if differential pressure reaches
0.750 IWC with output 2 switch by using external relays with normally open contacts for the audible
alarm and normally closed for the heating/cooling system. The outputs will reset at 0.200 IWC after the
filter is cleaned or replaced.
Installation:
Connect transmitter, relays, audible alarm and heating/cooling shutdown system per application,
diagrams below and manual instructions.
All specifications are subject to change without notice.
All sales subject to standard terms and conditions.
© 2017 Ashcroft Inc.
Figure 3 – Switch Schematic
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Rev. A 02/17, Page 2 of 7