Druck PV411 Pneumatic and Hydraulic Pump SR NO 14921
The Druck PV411 is a professional-grade, portable pressure calibration pump designed for field and workshop use. It is a versatile, manual (hand-operated) pump capable of generating highly stable and accurate pressure using either pneumatic (gas) or hydraulic (liquid) media. The inclusion of Serial Number 1492 indicates it is a specific, traceable unit, often a requirement in quality assurance and compliance-driven industries.
This instrument is a cornerstone tool for technicians involved in the calibration, testing, and maintenance of pressure instruments such as transmitters, transducers, gauges, switches, and sensors.
Key Features
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Dual-Media Operation:
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Pneumatic Mode: Uses clean, dry air or inert gases (like Nitrogen) to generate pressures up to 20 bar (300 psi). Ideal for testing most industrial process instruments.
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Hydraulic Mode: Uses fluids (typically water or oil) to generate higher pressures up to 400 bar (6000 psi). Essential for testing high-pressure hydraulic equipment and gauges.
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Intrinsically Safe (IS) Design: Many PV411 units, especially those used in hazardous areas (like oil & gas, chemical plants), are certified Intrinsically Safe. This means they are designed to prevent the release of sufficient energy to ignite a hazardous atmosphere.
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High Accuracy and Stability: The pump mechanism is engineered for fine control, allowing the user to “fine-tune” pressure with excellent resolution and hold it stable for precise readings during calibration cycles.
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Robust and Portable Construction: Housed in a durable, lightweight case, the PV411 is built to withstand the rigors of field use. Its portable nature makes it an excellent tool for on-site calibration.
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Integrated Vent Valve: Features a precision control valve for both increasing pressure and a separate vent valve for rapid and smooth pressure release, which is critical for testing pressure switches.
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Multiple Pressure Ports: Equipped with connectors for both pneumatic (low-pressure) and hydraulic (high-pressure) outlets, as well as ports to connect the instrument under test and a reference standard (like a Druck pressure module or a digital gauge).
Technical Specifications (Typical)
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Pressure Ranges:
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Pneumatic (Gas): 0 to 20 bar / 0 to 300 psi
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Hydraulic (Liquid): 0 to 400 bar / 0 to 6000 psi
(Note: Exact range can vary by specific model version)
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Media Compatibility:
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Pneumatic: Clean, dry, non-corrosive gases.
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Hydraulic: De-aerated water, or instrument oil (e.g., DHT oil).
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Materials: Typically features stainless steel and anodized aluminum wetted parts for corrosion resistance and media compatibility.
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Accuracy: The pump itself is a pressure source. Its performance is defined by its stability and controllability. The overall calibration system accuracy is determined by the reference standard (e.g., a Druck DPI 620 or similar module) used with it.
Typical Applications
The Druck PV411 (S/N: 1492) is used to calibrate and test a wide array of pressure equipment, including:
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Pressure Transmitters and Transducers
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Analog and Digital Pressure Gauges
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Pressure Switches (set-point and dead-band testing)
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Process Controllers
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Pressure Sensors in various industries
