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| Solenoids in Blood Analysis |
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A STA® Tubular solenoids serves multiple functions in a blood analysis machine. STA® solenoids are used to act as a pinch valve and as a door lock.
When blood or other bodily fluids are analyzed, safety is a critical concern for the technician. The process must be hands off. To stop and start the flow of fluids, a custom pinch valve mechanism is used. Tubes used to channel the blood through the machine are routed through a solenoid pinch valve mechanism. Each valve has the flow of blood stopped, or "pinched off" when the electronics instructs individual solenoids to pull in and obstruct the flow of blood. Much like stepping on a garden hose and stopping the flow of water, the solenoid generates enough force to pinch the tube and stop the flow of blood. Drops of blood are deposited into different analysis areas for a variety of tests.
Another tubular solenoid is used to lock the equipment closed while it is operating. Like many, many other locking applications, the solenoid plunger serves as a lock rod to prevent a door from opening.
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