{"product_id":"foxboro-43ap-fa42c-pc-series-pneumatic-indicating-controller","title":"Foxboro 43AP-FA42C-PC Series Pneumatic Indicating Controller","description":"\u003ch2\u003eFoxboro 43AP-FA42C-PC 43AP Pneumatic Indicating Controller\u003c\/h2\u003e\n\u003cp\u003eConfigured for dynamic pressure control and signal transmission in pneumatic loops, the \u003cstrong\u003eFoxboro 43AP-FA42C-PC\u003c\/strong\u003e (\u003cstrong\u003e43AP-FA42CPC\u003c\/strong\u003e Pneumatic Indicating Controller) provides direct physical execution across continuous process control networks. The controller receives process inputs via an internal pressure receiver bellows, displays live measurements on an integrated pointer scale, and generates a 3 to 15 psi pneumatic output signal. Built with field pipe or yoke mounting hardware, proportional plus integral (reset) control elements, and an internal bumpless automatic\/manual transfer switch with balance gauge, the mechanism maintains loop stability without electrical power dependencies.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e43AP:\u003c\/strong\u003e Base model designation for field-mounted pneumatic indicating controllers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eF:\u003c\/strong\u003e Field mounting configuration designed for pipe or yoke installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA4:\u003c\/strong\u003e Control mode specifying proportional plus integral (reset) functionality, adjustable from 0.01 to 50 minutes per repeat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2:\u003c\/strong\u003e Output signal and gauge configuration providing a 3 to 15 psi signal paired with a 30 psi output pressure gauge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eC:\u003c\/strong\u003e Internal bumpless automatic\/manual transfer switching mechanism equipped with a 2-position switch, balance gauge, and regulator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePC:\u003c\/strong\u003e Measuring element designated as a pressure receiver bellows.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e43AP-FA42C-PC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFoxboro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e4.8 kg (10.6 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 43AP series enclosure dimensions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +80 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eNone (operated strictly via pneumatic supply air)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003ePneumatic Indicating Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal\u003c\/td\u003e\n\u003ctd\u003ePressure via receiver bellows element (PC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e3 to 15 psi pneumatic signal (with 30 psi output gauge)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Pressure\u003c\/td\u003e\n\u003ctd\u003e140 +\/-1.4 kPa (20 +\/-0.2 psi) clean, dry instrument air\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-0.5% of span (input to pointer accuracy)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRepeatability\u003c\/td\u003e\n\u003ctd\u003e0.2% of span\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeadband\u003c\/td\u003e\n\u003ctd\u003e0.1% of span\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003eUnder 1 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Modes\u003c\/td\u003e\n\u003ctd\u003eProportional plus Integral (0.01 to 50 min\/repeat)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eField mount (pipe or yoke)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control \u0026amp; 4-20 mA Loop Architecture\u003c\/h3\u003e\n\u003cp\u003eThe instrument integrates mechanical force-balance actuation with pneumatic signal output channels, completely bypassing electronic current loop circuitry to eliminate spark hazards. While digital platforms rely on 4-20 mA HART loop protocol configurations or Fieldbus connectivity, this controller processes mechanical bellows displacement directly to vary nozzle-flapper backpressure. Thermal expansion shifts are mitigated across wide operating windows, maintaining an input-to-pointer accuracy within +\/-0.5% of span without requiring cold junction compensation. The internal manual-to-automatic transfer circuit utilizes an integrated balance regulator and dual-pressure gauge to equalize internal transfer pressures, enabling seamless bumpless switching between automatic loop control and manual signal override.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What specific air supply specifications are mandatory for operating the internal flapper-nozzle mechanism?\u003c\/p\u003e\n\u003cp\u003eA: The module requires a clean, dry, oil-free instrument air supply regulated to 140 +\/-1.4 kPa (20 +\/-0.2 psi). Moisture or dirt particles in the supply line will plug internal orifices and disrupt output regulation.\u003c\/p\u003e\n\u003cp\u003eQ: How is a bumpless transfer performed between automatic and manual control modes?\u003c\/p\u003e\n\u003cp\u003eA: The operator turns the 2-position switch to the balance position, adjusts the internal manual regulator until the balance gauge needle aligns with the controller output pointer, and then flips the switch to the desired operating mode.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Supply Quality:\u003c\/strong\u003e Install an upstream air filter-regulator to deliver clean instrument air at exactly 20 psi (140 kPa) before pressurizing the module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Stability:\u003c\/strong\u003e Secure the chassis to a rigid vertical pipe or yoke support structure using standard mounting brackets to minimize mechanical vibration transmitted to the bellows assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePneumatic Tubing Connections:\u003c\/strong\u003e Ensure all pneumatic signal and supply lines connected to the 1\/4 in NPT female ports are clear of burrs and sealed with thread tape applied away from the leading thread.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePointer Zero Calibration:\u003c\/strong\u003e Equalize process pressure inputs and adjust the zero adjustment screw under atmospheric reference conditions to confirm accurate pointer alignment prior to loop startup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure Sealing:\u003c\/strong\u003e Fasten the front cover latches securely following calibration to protect internal mechanical linkages from ambient moisture and dust accumulation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Foxboro","offers":[{"title":"Default Title","offer_id":43969175126106,"sku":"43AP-FA42CPC","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/158.1_c022fa91-cdb7-4a4e-ad36-5e71d5b2974b.jpg?v=1788163150","url":"https:\/\/www.spareoil.com\/products\/foxboro-43ap-fa42c-pc-series-pneumatic-indicating-controller","provider":"SpareOil Automation","version":"1.0","type":"link"}