Graco 15M669 Sensor offers precise sensor pressure monitoring for demanding industrial spray applications. Engineered for seamless integration with airless sprayer equipment, it guarantees uniform flow rates and smooth performance. Featuring a durable housing and advanced sensing technology, this unit withstands rigorous conditions while delivering consistent results. Contractors and OEMs trust its reliable output to optimize productivity and minimize maintenance in professional coatings and surface treatment processes. It also includes straightforward calibration procedures for field service.
Designed for high-pressure filtration systems, this component ensures clean and uninterrupted operation by accurately signaling flow anomalies. The Graco 15M669's precision fluid outlet port enables quick connection to hoses and manifolds, reducing setup time and potential leaks. Its compact dimensions and robust construction make it ideal for portable sprayers and stationary spray booths alike. Enhance your coating projects with reliable feedback control, and experience improved finish quality and extended equipment life.
The Graco 15M669 Sensor Pressure Fluid Outlet is a precision-engineered component designed for demanding professional spray systems. Its primary function is to monitor and relay fluid outlet pressures in real time, enabling closed-loop control in both spray foam and liquid coatings applications. By maintaining consistent output, users achieve uniform spray patterns, reduced overspray, and improved transfer efficiency. This sensor integrates seamlessly with Graco pump assemblies and airless sprayer manifolds, delivering critical feedback for automated process adjustments. With a compact footprint of 1.4 x 0.49 x 0.715 inches and a lightweight profile of 0.22 lbs, it’s ideally suited for retrofitting into existing OEM packages without compromising fluid dynamics or system responsiveness. The robust design withstands aggressive media and sustained operation under high thermal and mechanical stress, making it a go-to solution for architects of advanced fluid delivery networks.
At the heart of the 15M669 lies a piezoresistive sensing element bonded to a Hastelloy C-276 diaphragm. This diaphragm interfaces directly with the pressurized fluid, translating hydraulic force into electrical resistance changes. The sensor housing is CNC-machined from 17-4PH stainless steel for exceptional tensile strength and corrosion resistance. A multilayer ceramic substrate supports the Wheatstone bridge circuitry, offering temperature compensation across a -40 °C to 120 °C service range. All wetted surfaces employ PTFE-backed seals and an EPDM O-ring, ensuring chemical compatibility with polyurethane, latex, and solvent-based professional coatings. Each unit undergoes helium-leak testing and vibration analysis per IEC 60068-2 standards, guaranteeing long-term reliability. The design prioritizes minimal dead volume and streamlined flow paths to preserve pump efficiency without introducing turbulence or pressure drop.
The 15M669 excels in high-resolution pressure monitoring up to 5,000 psi (345 bar), with linearity error under ±0.5% FSO and hysteresis below ±0.1% FSO. Response time is under 1 millisecond, allowing real-time feedback for rapid valve actuation and dynamic flow control. Calibration is performed at multiple setpoints spanning 0–2,000 psi, 0–3,000 psi, and full-scale, enabling software-driven range selection. Temperature drift is held to ±0.02% FSO/°C, ensuring stable readings during prolonged operation. Integrated EMI shielding permits deployment near high-voltage spray guns without signal interference. The sensor’s fluid path features a sintered stainless-steel filter element rated for 10 µm separation, delivering exceptional high-pressure filtration to protect sensitive orifice and pump components. This feature reduces maintenance intervals and improves overall system uptime in continuous-use environments.
Installation of the 15M669 is straightforward: torque the sensor into a 1/4″ NPTF fluid outlet port to 25–30 inch-lbs using a calibrated torque wrench. Orient the electrical connector to avoid hose routing conflicts and secure with a 7/16″ hex. The sensor interfaces via a standard 4–20 mA two-wire loop requiring a 12–36 VDC supply, simplifying wiring in field panels. For optimal accuracy, perform a two-point zero/span calibration after warm-up, following Graco’s software-guided sequence. Regular maintenance involves quarterly inspection of the sintered filter element and replacement as needed, as well as verifying seal integrity to maximize seal longevity. When integrated into automated paint booths or spray rigs, the sensor’s real-time output can be logged to SCADA systems for trend analysis, fault detection, and predictive maintenance planning. By preserving critical mechanical tolerances and ensuring consistent fluid parameters, the 15M669 elevates spray application quality and process control.
Incorporating the Graco 15M669 Sensor Pressure Fluid Outlet into your fluid delivery architecture enhances measurement fidelity, reduces downtime, and augments overall throughput. Its rugged material construction, precision calibration, and seamless compatibility with Graco pump modules make it indispensable for OEMs and end users seeking uncompromising performance in professional coatings operations. Whether specifying a new airless sprayer system or upgrading an existing platform, the 15M669 delivers the accuracy and resilience required by the most exacting industrial and commercial spray applications.
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