{"title":"Proportional Controllers","description":"\u003cp\u003eProportional controllers are used in applications where it is necessary to maintain a process variable, such as temperature, pressure, flow rate, or level, within a specific range or at a constant setpoint. An electrical signal, such as a Pulse Width Modulation (PWM) signal, often controls them. The controller transmits a signal to the proportional solenoid valve, directing it to change its state in response to changes in the process variable under observation. Consequently, the valve adjusts the flow of the medium (liquid or gas) to attain the intended flow profile.\u003c\/p\u003e\u003cp\u003eA proportional solenoid valve helps control the fluid flow rate accurately with a very fast response, rather than just completely closing or opening the valve. Utilizing a controller designed for proportional solenoid valves gives you greater control, less hysteresis, and the ability for a closed-loop feedback system (depending on controller inputs) compared to other control methods.\u003c\/p\u003e\u003ch2 id=\"_5pamk89dav9a\"\u003eProportional controller advantages\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThey can manage various valves, including those for processes and motors.\u003c\/li\u003e\n\u003cli\u003eCertain models (like Burkert) can save settings for valves and flow meters.\u003c\/li\u003e\n\u003cli\u003eThe controller can be easily connected to proportional solenoid valves using a plug-in (DIN) or screw-on connection.\u003c\/li\u003e\n\u003cli\u003eProvide multiple control functions, such as:\u003cul\u003e\n\u003cli\u003eContinuous control for smooth adjustments.\u003c\/li\u003e\n\u003cli\u003e2-point control for basic settings.\u003c\/li\u003e\n\u003cli\u003e3-point control for more options.\u003c\/li\u003e\n\u003cli\u003eOn\/off control for simple operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 id=\"_73eltgsgc65q\"\u003eApplications\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eTemperature control systems, such as HVAC (Heating, Ventilation, and Air Conditioning), where maintaining a consistent temperature is crucial for comfort or process requirements.\u003c\/li\u003e\n\u003cli\u003ePressure control in fluid systems, like water supply networks or industrial process lines, where maintaining constant pressure is essential for system performance and safety.\u003c\/li\u003e\n\u003cli\u003eFlow control in chemical processing, where the precise mixing of reactants depends on accurate flow rates to ensure product quality and process efficiency.\u003c\/li\u003e\n\u003cli\u003eLevel control in tanks and reservoirs, where the level of liquids must be kept within certain limits to prevent overflows or to ensure adequate supply for downstream processes.\u003c\/li\u003e\n\u003cli\u003eSpeed control in automated machinery requires precise regulation of motor speeds for consistent operations and product quality in manufacturing processes.\u003c\/li\u003e\n\u003cli\u003eGas dosing in medical or laboratory equipment, where exact amounts of gasses must be administered or mixed for patient care, experiments, or production of specialized chemical compounds.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch2 id=\"_t5z87fq9tbmq\"\u003eSelection criteria\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial construction:\u003c\/strong\u003e Choose controllers made from polyamide (PA) and polycarbonate with 20% glass fiber for enhanced strength and longevity, ensuring they perform reliably in different industrial settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical connection:\u003c\/strong\u003e Look for options such as DIN-A connectors and screw terminals to suit various installation needs and provide easy electrical connectivity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput sensor compatibility:\u003c\/strong\u003e For flexible system integration, ensure the controller supports a broad spectrum of input sensors, including binary, flow rate, 0-10V\/4-20mA signals, temperature, ratio, and dual frequency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eController outputs:\u003c\/strong\u003e Select a controller with diverse output options like binary, single PWM, 0-10V\/4-20mA, and dual PTM to meet various actuation requirements and ensure system compatibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP protection rating:\u003c\/strong\u003e Opt for controllers with appropriate IP protection to defend against dust and water, which is vital for operation in demanding industrial environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve compatibility:\u003c\/strong\u003e Confirm that the controller matches the specific proportional valve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput signal type:\u003c\/strong\u003e Identify the input signal needed from the sensor, such as temperature or flow, to match the controller's capabilities.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSetpoint accuracy:\u003c\/strong\u003e Choose a controller that can accurately maintain the setpoint, the target value the system aims to sustain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl range and resolution:\u003c\/strong\u003e Consider the necessary control range and resolution to ensure precise process regulation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower consumption:\u003c\/strong\u003e The controller's electrical efficiency can impact the system's overall energy consumption, especially in continuous operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating environment:\u003c\/strong\u003e Account for the operating conditions, including temperature and humidity, to select a controller that can withstand the specific environment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical specifications:\u003c\/strong\u003e Verify that the controller meets the electrical requirements, such as voltage and current, for your application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePWM frequency:\u003c\/strong\u003e The PWM frequency is critical for properly operating the proportional valves. If the frequency is not set correctly, the valves may not function as intended, leading to suboptimal performance or even failure of the system they are a part of.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2 id=\"_yhiaoqqb9i37\"\u003eWhen to choose a proportional valve controller\u003c\/h2\u003e\u003cp\u003eIf your application demands the ability to fine-tune and dynamically adjust the flow or pressure, you should consider a proportional valve controller rather than just switch it on or off. A standard valve with a basic or no controller would suffice for simpler operations that only require full or no flow.\u003c\/p\u003e","products":[{"product_id":"nls-018-g1-8inch-stainless-steel-needle-valve-ptfe-300-bar","title":"G1\/8'' Stainless steel Needle Valve PTFE 300 bar - NLS","description":"\u003cp\u003eVery compact stainless steel needle valve with G 1\/8\" threads. This valve can be used as a reliable shut-off valve, or to accurately control (relative low) flow rates of clean gases or fluids. The valve has a nominal internal diameter of 2.5 mm. The seals are made of PTFE. The max pressure is 300 bar and the allowable temperature range is from -20 to max. 200°C. Thanks to the high quality materials and robust construction, the valve is suited for high pressures and agressive fluids.\u003c\/p\u003e","brand":"Tameson","offers":[{"title":"Default Title","offer_id":46756659003721,"sku":"NLS-018","price":28.82,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0572\/1787\/6152\/files\/nls-012-1.414381c2_ca236438-60ca-4a0b-a29e-1804e5e2820f.jpg?v=1727935996"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0572\/1787\/6152\/collections\/2200.e090df6e_88ac23c1-33aa-4d9d-9800-515c94111ff6.jpg?v=1774544171","url":"https:\/\/tamisoon.com\/collections\/proportional-controllers.oembed","provider":"tamisoon.com","version":"1.0","type":"link"}