Sterling 882.00722.00 User Manual

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Chapter 2: Functional Description 
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Pneumatic Slide Gate below surge hopper 
The surge hopper can be equipped with a pneumatic slide gate in lieu of the air cylinder and 
urethane dump cone. The knife gate is opened and closed by the PLC.  A 24 VDC solenoid is 
used to open and close the knife gate. 
WARNING! 
Slide gates create a pinch-point hazard 
Low Level Proximity Sensors 
Detects material supply problems before rate monitor hoppers are empty.  A 24VDC 
capacitive proximity switch is utilized for this option.  The proximity switch is wired directly 
into the PLC enclosure.  If there is a material supply problem, a visual alarm is activated. 
 
2-5 Safety 
Features 
This section includes information on safety devices and procedures that are inherent to the 
rate monitor system. This manual is not intended to supersede or alter safety standards 
established by the user of this equipment. Instead, the material contained in this section is 
recommended to supplement these procedures in order to provide a safer working 
environment.