PNEUMATIC VALVE CONTROL ASSEMBLY
First Claim
1. A pneumatic valve control assembly for a sample conditioning system used to condition one or more fluid streams to be analyzed, the pneumatic valve control assembly comprising:
- a housing being attachable to an enclosure of the sample conditioning system at a first interface;
at least one electrically operated pneumatic solenoid valve located in the housing, the solenoid valve having an inlet for connection to a source of pressurized air and an outlet connected to a flow passage extending through the first interface whereby pressurized air can be controllably supplied to a respective pneumatically controlled valve located in the enclosure of the sample conditioning system for pneumatically operating the pneumatically controlled valve; and
electronic circuitry located in the housing, the electronic circuitry including at least one relatively high voltage control circuit for controlling power supplied to the solenoid valve.
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Accused Products
Abstract
A pneumatic control valve assembly for a sample conditioning system used to condition one or more fluid streams to be analyzed. A pneumatic valve control assembly comprises a housing being attachable to an enclosure of the sample conditioning system at a first interface. The assembly includes at least one electrically operated pneumatic solenoid valve located in the housing and adapted to controllably supply pressurized air through a flow passage extending through the first interface to a respective pneumatically controlled valve located in the conditioning system enclosure to operate the pneumatically controlled valve. The assembly includes electronic circuitry located in the housing and having at least one relatively high voltage control circuit for controlling power supplied to the solenoid valve.
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Citations
24 Claims
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1. A pneumatic valve control assembly for a sample conditioning system used to condition one or more fluid streams to be analyzed, the pneumatic valve control assembly comprising:
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a housing being attachable to an enclosure of the sample conditioning system at a first interface; at least one electrically operated pneumatic solenoid valve located in the housing, the solenoid valve having an inlet for connection to a source of pressurized air and an outlet connected to a flow passage extending through the first interface whereby pressurized air can be controllably supplied to a respective pneumatically controlled valve located in the enclosure of the sample conditioning system for pneumatically operating the pneumatically controlled valve; and electronic circuitry located in the housing, the electronic circuitry including at least one relatively high voltage control circuit for controlling power supplied to the solenoid valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A sample conditioning system for use in a chemical or other process facility for obtaining samples from one or more fluid streams to be analyzed, the system comprising:
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an enclosure having an interior and an exterior, an opening through a wall thereof, and one or more stream pneumatically controlled valves; and a pneumatic valve control assembly comprising; a housing being attachable to the enclosure of the sample conditioning system at a first interface; at least one electrically operated pneumatic solenoid valve located in the housing, the solenoid valve having an inlet for connection to a source of pressurized air and an outlet connected to a flow passage extending through the first interface whereby pressurized air can be controllably supplied to a respective pneumatically controlled valve located in the enclosure of the sample conditioning system for pneumatically operating the pneumatically controlled valve; and electronic circuitry located in the housing, the electronic circuitry including at least one relatively high voltage control circuit for controlling power supplied to the solenoid valve. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of attaching a pneumatic control valve assembly to a sample conditioning system used for conditioning one or more fluid streams to be analyzed, the method comprising:
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providing a pneumatic control valve assembly comprising a housing and having (i) at least one electrically operated pneumatic solenoid valve, and (ii) electronic circuitry located within the housing, the solenoid valve having an inlet for connection to a source of pressurized air and an outlet for supplying pressurized air, the electronic circuitry including at least one relatively high voltage control circuit for controlling power supplied to the solenoid valves, and at least one relatively low voltage circuit connected to a lead; attaching the housing to an enclosure of the sample condition at a first interface, the first interface having a flow passage extending therethrough, the pressurized air being controllably supplied through the first interface to a respective pneumatically controlled valve located in the enclosure; and passing the lead connected to the low voltage control circuit through a second interface for connection to at least one low voltage component located in the enclosure of the sample conditioning system. - View Dependent Claims (24)
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Specification