{"product_id":"honeywell-51451326-503-process-analytical-sensors","title":"Honeywell 51451326-503 Process Analytical Sensors","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 51451326-503\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e51451326-503\u003c\/strong\u003e pH Probe Sensor, operates as a dedicated hardware component for continuous electrochemical hydrogen ion measurement within Honeywell analytical process loops. Configured with a 20 inch integrated cable assembly, it provides direct physical\/electrical execution for in-line and immersion fluid sensing.\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\u003e51451326-503\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eIndustrial Standard Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.31 lbs (0.59 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Industrial Analytical Probe Dimensions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 100 deg C (32 to 212 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive Electrochemical Sensor Element\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003epH Glass Electrode Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Interface\u003c\/td\u003e\n\u003ctd\u003e20 inch Integrated Cable Lead\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication Mounting\u003c\/td\u003e\n\u003ctd\u003eIn-Line Threaded or Immersion Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eCold Junction Compensation \u0026amp; 4-20 mA HART Loop Telemetry\u003c\/h3\u003e\n\u003cp\u003eThe 51451326-503 pH probe sensor generates millivolt signals proportional to solution activity, which are transmitted to analytical transmitters supporting cold junction compensation and RTD temperature offsets over its 20 inch cable connection. Galvanic channel-to-channel isolation within the downstream Honeywell interface module decouples low-impedance electrode signals from high-voltage field ground potential shifts. This signal conditioning retains measurement linearity across multi-parameter transmitter loops communicating via the 4-20 mA HART loop protocol.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 51451326-503 probe be installed in pressurized in-line piping?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the electrode body housing is designed for direct insertion into process piping via standard in-line mounting hardware or immersion mounting assemblies within rated process pressure bounds.\u003c\/p\u003e\n\u003cp\u003eQ: Does the integrated 20 inch cable require external junction shielding?\u003c\/p\u003e\n\u003cp\u003eA: The high-impedance coaxial wiring within the 20 inch cable must be terminated directly into a compatible analyzer or field junction box without removing factory shielding to avoid signal noise corruption.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eRemove the protective wet storage cap from the glass bulb sensing element immediately prior to installation.\u003c\/li\u003e\n\u003cli\u003eInstall the probe into the threaded process fitting using Teflon tape or appropriate thread sealant, ensuring a liquid-tight mechanical seal.\u003c\/li\u003e\n\u003cli\u003eKeep the sensing element oriented at least 15 degrees above the horizontal plane to prevent air bubble accumulation inside the glass bulb.\u003c\/li\u003e\n\u003cli\u003eRoute the 20 inch integrated cable through grounded, isolated electrical conduit to shield the high-impedance millivolt signal from nearby power lines.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":53599431950645,"sku":"51451326-503","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/51451326-503.png?v=1789616706","url":"https:\/\/www.5gplc.com\/products\/honeywell-51451326-503-process-analytical-sensors","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}