{"product_id":"51451326-504-low-temperature-probe-honeywell","title":"51451326-504 Low Temperature Probe | Honeywell","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 51451326-504\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e51451326-504\u003c\/strong\u003e Low Temperature Probe, operates as a dedicated hardware component for direct thermal signal measurement and RTD sensor interface execution within Honeywell DCS control platforms.\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\u003e51451326-504\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\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e5 cm x 14.5 cm x 20 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eStandard cryogenic\/low-temperature sensing range (-200 to +100 deg C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive sensor element (loop excitation powered)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eLow-temperature probe assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Application\u003c\/td\u003e\n\u003ctd\u003eDirect process temperature measurement for analog input channels\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 Loop Interface Characteristics\u003c\/h3\u003e\n\u003cp\u003eDesigned for precise low-temperature tracking across industrial process loops, the probe assembly integrates high-purity thermal element wiring to prevent reference resistance drift. Internal lead-wire balancing compensates for parasitic line resistance, preventing measurement inaccuracies across long cable runs back to the analog input card. When connected to Honeywell DCS temperature transmitters, cold junction compensation (CJC) algorithms and galvanic signal isolation maintain total loop accuracy and prevent ground loop noise from degrading millivolt-level signal conversion.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does this low temperature probe require external power to operate?\u003c\/p\u003e\n\u003cp\u003eA: No, the probe utilizes passive sensing element technology and derives its operating excitation directly from the connected DCS analog temperature input channel or field transmitter loop.\u003c\/p\u003e\n\u003cp\u003eQ: How is lead resistance compensation managed for long wiring runs to the I\/O terminal block?\u003c\/p\u003e\n\u003cp\u003eA: The probe supports standard 3-wire or 4-wire resistance temperature detector (RTD) configurations, allowing the controller input module to actively eliminate line-resistance voltage drops.\u003c\/p\u003e\n\u003cp\u003eQ: What precautions should be taken to prevent thermowell moisture ingress at cryogenic temperatures?\u003c\/p\u003e\n\u003cp\u003eA: Ensure the probe head assembly conduit connection is sealed with NPT thread sealant and sealed terminal glands to prevent moisture condensation inside the housing sheath.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eMount the probe assembly into the process thermowell, ensuring full mechanical engagement to maintain proper thermal conduction.\u003c\/li\u003e\n\u003cli\u003eApply anti-seize compound to all stainless steel thermowell threads prior to hand-tightening to at least 5 full NPT thread engagements.\u003c\/li\u003e\n\u003cli\u003eRoute sensor lead wiring in grounded metal conduit separated from high-voltage AC cables to eliminate electromagnetic noise coupling.\u003c\/li\u003e\n\u003cli\u003eTerminate signal wires according to 3-wire or 4-wire schematics at the field termination assembly (FTA) or junction box.\u003c\/li\u003e\n\u003cli\u003eGround the cable shield braiding at a single point on the DCS system earth bus bar to eliminate ground loop currents.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":53616020291893,"sku":"51451326-504","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/51451326-504_Cocoai.png?v=1789884038","url":"https:\/\/www.5gplc.com\/products\/51451326-504-low-temperature-probe-honeywell","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}