Refinery, petrochemical, and offshore process environments demand sensors that survive extreme temperatures, corrosive process fluids, vibration, and hazardous area classification. Thermometrics manufactures the full range of sensors for these applications, including explosion-proof assemblies, tube-skin thermocouples, and thermowell-mounted probes.
Complete thermocouple and RTD assemblies with UL/CSA-listed explosion-proof connection heads. Class I, Groups B/C/D, Division 1 and Division 2. Cast-iron and stainless steel housings with ½" NPT conduit entries.
Weld-pad tube-skin thermocouples for radiant furnace monitoring in refineries and petrochemical plants. Inconel sheath, Type K or N, welded to tube OD. Extension cable in armored MIMS format for high-temperature furnace environments.
RTD and thermocouple elements sized for all standard thermowell bore diameters. Spring-loaded tip, quick-disconnect head, and matched thermowell bore geometry ensure repeatable thermal contact. ASME PTC 19.3 wake frequency support.
Sensors for high-pressure process streams above ANSI 900# flange rating. Extra-heavy-wall thermowell machined to pressure rating, certified material trace to ASME B31.3 heat number requirements. Witness inspection available.
Sheath and thermowell materials selected for the specific corrosive medium: Hastelloy C276 for HCl and wet chlorine, Alloy 400 (Monel) for hydrofluoric acid, duplex 2205 for chloride-containing streams, and Inconel 625 for high-temperature oxidizing service.
Bearing temperature sensors for rotating equipment per API 670 vibration and temperature monitoring standard. Pt100, 3-wire, Class B, with stainless-steel case and spring-loaded tip. Full lot documentation.
Type N (Nicrosil/Nisil) thermocouples offer significantly better long-term drift characteristics than Type K at temperatures above 300°C, making them the preferred choice for continuous-duty furnace and process installations where calibration intervals are long.
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