{"product_id":"43ap-fa42c-pc-foxboro-pneumatic-indicating-controller","title":"43AP-FA42C-PC Foxboro Pneumatic Indicating Controller","description":"\u003ch2\u003eFoxboro 43AP-FA42C-PC Pneumatic Indicating Controller\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eFoxboro 43AP-FA42C-PC\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e43AP\u003c\/strong\u003e Indicating Controller, operates as a dedicated hardware component for proportional plus integral pneumatic loop execution within process control systems. The instrument senses physical pressure signals via an internal bellows receiver and generates a calibrated pneumatic output to drive final control elements directly.\u003c\/p\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 (Schneider Electric)\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 43AP field-mount case profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eFully pneumatic (No electrical power required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Pressure\u003c\/td\u003e\n\u003ctd\u003e20 psi to 45 psi clean, dry instrument air\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e3 psi to 15 psi pneumatic signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Action\u003c\/td\u003e\n\u003ctd\u003eProportional plus Integral (A4: 0.01 to 50 min\/repeat)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasuring Element\u003c\/td\u003e\n\u003ctd\u003ePC - Pressure receiver, bellows\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003eField mounting (Pipe or Yoke)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol \u0026amp; Pneumatic Conversion Integration\u003c\/h3\u003e\n\u003cp\u003eThe 43AP-FA42C-PC processes differential pressure inputs mechanically, using its internal bellows unit to shift internal flapper-nozzle mechanisms without requiring electrical power. When integrated into hybrid automation networks, the standardized 3 psi to 15 psi output signal couples directly to current-to-pressure (I\/P) transducers or pressure transmitters operating on the 4-20 mA HART loop protocol. This mechanical-to-pneumatic baseline ensures continuous feedback control across isolated process loops where electrical switching introduces intrinsic safety hazards.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the bumpless automatic-to-manual transfer switch function on this unit?\u003c\/p\u003e\n\u003cp\u003eA: The integrated C-option transfer mechanism utilizes a two-position switch, a balance gauge, and a manual regulator. Operators align the manual regulator output with the automatic control pressure on the balance gauge before throwing the switch, preventing process surges during mode transfers.\u003c\/p\u003e\n\u003cp\u003eQ: What air quality standard is required to operate the internal nozzle-flapper mechanism?\u003c\/p\u003e\n\u003cp\u003eA: The controller requires clean, dry, oil-free instrument air filtered to industrial standards at supply pressures between 20 psi and 45 psi to prevent orifice clogging and calibration drift.\u003c\/p\u003e\n\u003cp\u003eQ: Can this controller be mounted directly onto a process pipe?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the F-suffix mounting configuration allows direct field installation using a standard 2-inch vertical or horizontal pipe yoke assembly.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eFollow these core mechanical and pneumatic installation guidelines during field setup:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eSecure the controller to a stable 2-inch pipe yoke or flat mounting structure using the provided steel mounting hardware.\u003c\/li\u003e\n\u003cli\u003eConnect the clean instrument air supply line to the 1\/4 NPT supply port, verifying that line pressure stays within the 20 psi to 45 psi operating range.\u003c\/li\u003e\n\u003cli\u003eThread the process measurement piping into the bellows pressure receiver connection using appropriate thread sealant.\u003c\/li\u003e\n\u003cli\u003eRoute the 3 psi to 15 psi output signal tubing directly to the control valve actuator or signal converter, verifying all pneumatic connections are leak-tight.\u003c\/li\u003e\n\u003cli\u003eSet the internal proportional band and integral reset knobs to match the baseline time constants of the controlled process loop before opening the air supply line.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Foxboro","offers":[{"title":"Default Title","offer_id":43931161854042,"sku":"43AP-FA42C PC-00","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/464_6fd7e904-68a2-4f29-9fcf-be773dead3d6.jpg?v=1787900478","url":"https:\/\/www.spareoil.com\/products\/43ap-fa42c-pc-foxboro-pneumatic-indicating-controller","provider":"SpareOil Automation","version":"1.0","type":"link"}