VSO®-EV Miniature Electronic Vacuum Controller
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Miniature Electronic Vacuum Controller Vacuum Controllers The VSO®-EV is a Miniature Electronic Vacuum Controller specifically configured and optimized for precise vacuum control. The VSO®-EV converts a variable electrical control signal into a closed-loop, tightly regulated pneumatic output. Often used for aspirating liquid samples for pipette dispensers, the VSO®-EV offers closed loop control around critical system parameters through the use of an internal vacuum sensor. The VSO®-EV is well suited for high precision automated laboratory instruments, meeting the most stringent separation and detection requirements. Features • Low power consumption reducing heat generation • Ensures high accuracy and unparalleled resolution for improved results Electronic Pressure Control Typical Applications • Sample aspiration Tested for long life to improve system availability Offers an internal vacuum sensor for closed loop control capability to ease integration • Liquid dispense meniscus pressure control • Component pick and place Analog control for added design flexibility RoHS compliant RoHS Product Specifications Physical Properties Valve Technology: Thermally compensated VSO® proportional valve Media: Non-corrosive gases Operating Environment: 32 to 131°F (0 to 55°C) Storage Temperature: -40 to 149°F (-40 to 65°C) Length: 1.27 in (32.3 mm) Width: 2.32 in (59.0 mm) Height: 2.20 in (55.9 mm) Weight: 5.6 oz (158.8 g) Porting: 10-32 female ports Metric adaptor available Electrical Main Voltage: 24 VDC + 10% Input Control Signal: 0-5 VDC standard Monitor Output Voltage: 0-5 VDC Current Requirement: Maximum <400 mA Electrical Connector: RJ-45 Wetted Materials Manifold: AL 6061-T6, FKM, 302 Series SS Valve: FKM, 300 Series SS Brass 36000 HO2 Tubing: Esther-based Polyurethane Sensor: Glass, Silicon, Silicone, Polyphenylene sulfide Performance Characteristics Vacuum Ranges: 863-1013 mBar 1 668-1013 mBar 1 530-1013 mBar 1 Pressure Accuracy: + 1.5% Full Scale maximum Response: <15 ms (Response time to target pressure is output volume dependent) Linearity: < +1.5% Full Scale AH pressure in mBar absolute VSO is a registered trademark of Parker Hannifin Corporation.

VSO®-EV Miniature Electronic Vacuum Controllers Electronic Pressure Control How Flow Effects Vacuum Control The flow curves illustrate the flow capabilities of the two models of vacuum controllers. Vacuum control using a constant flow approach requires the system to manage pressure drops across a variable orifice and a fixed orifice (see below). VSO®-EV Flow Capability Sizing ChartsTypical Flow vs Vacuum @ 25°C Pressure (psig) -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 Choosing the Right Model In some cases, the fixed orifice is the cumulative restriction of the application system requiring the...

VSO®-EV Miniature Electronic Vacuum Controllers Dimensions VSO-EV Basic Dimensions (2.320 [58.93]) INLETPORT INLET (VACUUM SOURCE) (VACUUM SOURCE) V2 Body, Basic Valve Dimensions (2-Way and 3-Way) J1 CONNECTOR ACCESS MOLEX CAT-5 #95040 SEE DETAIL PORT 3: (2-WAY, NONE) #10-32 UNF-2B X (3-WAY, NORMALLY OPEN) Electronic Pressure Control Mechanical Integration Metric Adaptor (available option) .281 [7.14] Electrical Interface CAT 5e Plug-in (RJ-45) Connector (included) Signal Input Control Signal, 0-5 VDC Monitor Signal Output, 0-5 VDC System Ground CAT 5e to flying lead Plug-in Ca

Electronic Pressure Control VSO®-EV Miniature Electronic Vacuum Controllers Installation Guide The VSO®-EV is a dynamic vacuum controller that uses proportional valve technology to supply an accurate and stable vacuum source for a variety of application requirements. Installation of this device requires the completion of a few easy steps. They are as follows: • Ensure that any gas drawn into the unit is non corrosive, clean and dry. • Connect the vacuum source to the Inlet Port on the VSO®-EV. • Connect a line requiring the controlled vacuum to the Outlet Port on the VSO®-EV. • Pneumatic...

VACUUM CONTROL: (BLEED) CONFIGURATION (VSO-EV) Vacuum Controller with Internal Vent VENT VENT With Internal Vent. VACUUM SOURCE VACUUM SENSOR An internal vent constantly draws air from atmosphere into the system. 0-5 VDC VACUUM MONITOR OUTPUT SETPOINT ELECTRONIC CONTROL VACUUM CONTROL: (NO BLEED) CONFIGURATION (VSO-EV) Vacuum Controller with No Internal Vent APPLICATION With No Internal Vent. VACUUM SOURCE VACUUM SENSOR An internal vent may not be required when the application vents some air into the vacuum controller. 0-5 VDC VACUUM MONITOR OUTPUT SETPOINT ELECTRONIC CONTROL Ordering...

Electronic Pressure Control