Family Owned & Operated Since 1971• Bakersfield, CA
Thermometers, thermocouples, RTDs, dry-block sources, and temperature indicators
1290 products
Built-to-Order custom RTD and thermocouple sensor — the flexibility platform of the Rosemount temperature line. Industrial, Cable, Surface, and Bearing sensor designs covering applications where the standardized 214C / 214C-TC / 68Q families don't fit: surface temperature on rotating equipment bearings, cable-style sensors with flying leads or MI sheath, special-purpose mounting (bayonet, screw-in cable, DIN plate). RTD types: thin-film PT100/PT1000 (best for vibration), wire-wound PT100/PT1000 (best for accuracy). TC types: E, J, K, N, T. Multiple sheath materials, diameters, and wire-configuration options (single/dual, 2/3/4-wire RTDs, grounded/ungrounded TCs). Most configurations require a Configuration Data Sheet (CDS) at quote — the encoded options below capture the major decision points; finer details get specified during the quote process.
Industry-standard temperature sensor — RTD (PT100) and thermocouple (J, K, T, N, E) variants for tough process environments. Standard outside diameter ¼-in (6 mm). Two element technologies: wire-wound (best for low-temperature accuracy, -148 to 842 °F) and thin-film (best for vibration/physical shock, high-temp up to 1112 °F). Multiple sensor mounting styles (Spring-loaded, Welded, Compact, with-indicator) for direct immersion or thermowell pairing. Single or dual 3-wire/4-wire element configurations for redundancy or 4-wire accuracy. Pairs natively with Rosemount 114C / Twisted Square thermowells and 248 / 248R / 644 / 3144P / 3144S / 648 transmitters.
Industry-standard thermocouple sensor — the TC sibling of the 214C RTD platform. Same standard ¼-in (6 mm) OD, same mounting styles (Spring-loaded, Welded, Compact, with-indicator), same connection-head options as the RTD variant. Five thermocouple types: E (highest output, non-magnetic), J (most common, iron/constantan, -40 to 1400 °F), K (high-temp, Chromel/Alumel, up to 2192 °F), N (highest thermoelectric stability vs E/J/K/T), T (low-temp, copper/constantan, down to -321 °F). IEC 60584 Class 1 or 2 tolerance, plus ASTM E230 Special and Standard Tolerances. Pairs with Rosemount 114C / Twisted Square thermowells and 248/644/3144P/3144S/648 transmitters.
Tank-gauging multi-input temperature transmitter — purpose-built for custody-transfer-grade tank temperature measurement. Integrates up to 16 Pt-100 RTD spot elements (Cu-90 also supported) over -200 to 250 °C, plus optional Rosemount 765 water-level sensor input. ±0.05 °C transmitter accuracy (excluding sensor error). Premium performance class, FOUNDATION Fieldbus / Tankbus 2-wire bus-powered output. Custody-transfer type approvals available for PTB (Germany), NMIM (Malaysia), and GOST (Kazakhstan) — requires pairing with a Rosemount 2410 Tank Hub and 5900S Radar Level Gauge of matching approval. Polyurethane-covered aluminum IP66/67 enclosure. Hazardous-area: Intrinsic Safety only (FM/CSA/ATEX/IECEx/INMETRO/NEPSI/TIIS/EAC/KCs).
Basic, cost-effective HART head-mount temperature transmitter for temperature monitoring points. DIN-B form factor mounts directly inside the sensor's connection head, eliminating the need for extension wires or multiplexers. Single-sensor 4-20 mA HART output, ±0.15 °C digital accuracy, with worldwide hazardous-area approvals (FM, CSA, ATEX, IECEx, NEPSI, EAC). Aluminum or stainless-steel enclosure options; sanitary DIN-A/DIN-B variants for hygienic process. Pairs with any standard 2-, 3-, or 4-wire RTD or thermocouple sensor.
Compact DIN-rail-mount variant of the Rosemount 248 platform. HART/4-20 mA temperature transmitter engineered for common single-point measurement applications where space-efficient panel/cabinet mounting matters more than direct-in-sensor-head installation. 3-Point Calibration Certificate (Q4) and Custom Configuration of Software Parameters (C1) available. Intrinsic-Safety-only certifications — the 248R typically lives inside a customer-provided cabinet, so flameproof/XP variants aren't part of the line.
Emerson's flagship field-mount temperature transmitter. Dual-compartment housing isolates electronics from field wiring for serviceability without exposing the loop. HART 4-20 mA or FOUNDATION Fieldbus output, single or dual sensor input, ±0.10 °C digital accuracy, and advanced diagnostics (thermocouple degradation, min/max tracking, sensor drift alert). Pairs with the Rosemount 0085 Pipe Clamp Sensor for X-well non-intrusive surface temperature measurement.
Emerson's newest flagship field-mount temperature transmitter. Industry-leading 0.05 °C accuracy (Ultra performance class), 20-year stability, IEC 61508 safety certification, and Bluetooth configuration via ReadyConnect technology. Dual-compartment housing isolates electronics from field wiring. HART 4-20 mA output with full diagnostic coverage from sensor to control room. Pairs with the Rosemount 0085 Pipe Clamp Sensor for X-well non-intrusive surface temperature measurement, or with Rosemount 214C / 214A / 65 sensors and 114C / Twisted Square thermowells for traditional in-process measurement.
Multi-spot temperature sensor for ambient-temperature tank gauging — measures liquid temperature at multiple heights with up to 16 Pt-100 spot elements. Hung vertically from the top of the tank, length specified per tank height (2-70 meters / 80-2700 inches). 1-in 316 SST sheath, ANSI or EN flanged tank connections, four-wire / three-wire RTD options. IEC 60751 Class 1/6 B-sp tolerance (Class 1/10 also available with four-wire). Designed for atmospheric tanks up to 0.2 bar (2.9 psi); pressurized tanks require a thermowell. Pairs with the Rosemount 2240S Multi-Input Temperature Transmitter for FOUNDATION Fieldbus / Tankbus output.
Multi-spot temperature sensor for cryogenic tank gauging — LNG, liquid nitrogen, liquid oxygen, liquid hydrogen, ethylene applications. Same flexible-tube architecture as the Rosemount 565 but with Class A Pt-100 sensors suitable for very low temperatures, and a special calibration procedure for sub-zero accuracy. Up to 16 spot elements, 2-70 m / 80-2700 in length range. Pairs with the Rosemount 2240S Multi-Input Temperature Transmitter for FOUNDATION Fieldbus / Tankbus output. Common pairing on the same 2240S with a Rosemount 614 cryogenic spot temperature sensor for tank-skin temperature.
Single-spot cryogenic temperature sensor for LNG / cryogenic tank skin temperature, stratification detection, and Level/Temperature/Density (LTD) measurement. Designed to mount on the outside of cryogenic process equipment to measure skin or wall temperature without process penetration. Class A Pt-100 RTD, single or dual element, 4-wire or 3-wire configurations. Each Rosemount 2240S Multi-Input Temperature Transmitter supports up to 16 Rosemount 614 sensors — the standard architecture for monitoring multiple stratification points or skin-temperature locations across one large cryogenic tank.
Versatile temperature transmitter — head-mount (DIN A), field-mount, or rail-mount form factors with single or dual sensor input. HART 4-20 mA (all variants), FOUNDATION Fieldbus or PROFIBUS PA (single-sensor head-mount only). The workhorse temperature transmitter for general process service: pairs factory-direct with any Rosemount sensor (214C RTD, 0185/186 thermocouples) and thermowell. LCD display + LOI option, NAMUR alarm levels, and Hot-Backup / sensor-drift diagnostics on dual-sensor variants.
Industry-standard wireless temperature transmitter — best-in-class wireless accuracy and stability for process monitoring. Dual-compartment housing isolates electronics from field wiring. WirelessHART IEC 62591 with user-configurable update rate, 2.4 GHz DSSS radio. SmartPower module (Lithium-thionyl chloride, 10-year life @ 1-minute update). Single-sensor input pairs with the Rosemount 214C / 214A / 65 sensors or with the 0085 Pipe Clamp Sensor for X-well non-intrusive surface measurement. All certifications are Intrinsic Safety — by design, the 648 is battery-powered and approved for IS service worldwide.
Sanitary RTD temperature sensor for hygienic process (Food, Beverage, Pharmaceutical, Biotech). Platinum element, -58 to 752 °F (-50 to 400 °C) operating range. Multiple sensor styles: Capsule (rigid lead-wire only), General-Purpose (most common), Spring-loaded (for thermowell pairing), Bayonet Spring-loaded (quick-disconnect). Wide range of immersion lengths (1-48 in in 0.5-in increments). Connection heads in aluminum (painted or unpainted), polypropylene, or SST. Pairs with sanitary process connections (tri-clamp, DIN-A/DIN-B sanitary thermowell heads). Model code starts with 0068 per Rosemount conventions.
Multi-spot temperature sensor with an integrated water-level sensor — combines the Rosemount 565 spot-temperature architecture with a separate water-level probe along the same sensor tube. Used for monitoring the temperature profile AND the free-water layer at the bottom of crude oil / petroleum product storage tanks (water settles below oil; the height of the water layer is custody-transfer-relevant). Up to 16 Pt-100 RTD spot elements + 1 water-level input. Stainless steel 316 housing welded to the flexible temperature sensor tube. Pairs with the Rosemount 2240S Multi-Input Temperature Transmitter (which accepts the water-level signal on its Auxiliary input).
High-density multi-input temperature transmitter — up to 8 sensor inputs in a single device. Best-in-class solution for high point-count applications: reactor temperature profiling, distillation columns, hotbox monitoring, tank stratification. FOUNDATION Fieldbus output only (3 AI + MAI + ISEL function blocks + Backup Link Active Scheduler). Accepts RTD, thermocouple, mV, and Ω inputs; with the S002 option, also accepts 4-20 mA inputs (mix-and-match sensor types per channel). Wide hazardous-area cert matrix — many regional approvals require pairing with a Rosemount enclosure / junction box.
Wireless surface / ambient temperature monitor — part of Emerson's Synchros IIoT platform for asset and condition monitoring. WirelessHART (IEC 62591) protocol, integrates with existing or new WirelessHART networks via a 1410S Gateway. Designed for asset-level trend monitoring (heat exchanger fouling detection, heat trace verification, reciprocating compressor valve health, distribution line monitoring). User-orderable with battery, integral thermocouple sensor, and mounting accessories — all in one model number. Mount options: bracket, pipe clamp (magnetic mount coming). Designed for hazardous-area service. Connects to Plantweb Insight Asset View for real-time alerts, trend charts, and asset health scoring.
Specialty barstock thermowell with a patented twisted-square stem profile that dramatically reduces vortex-induced vibration. Designed for high-velocity service where a straight or tapered stem would resonate and fail by fatigue. ASME PTC 19.3 TW-2016 compliance for vortex-induced stress mitigation. Same 114C platform as the standard barstock thermowell, but with Threaded mounting only and the unique Twisted stem style. Wide material selection: 316/316L SST, 304/304L SST, Carbon Steel A-105, 310 SST high-temp, 321 SST, Alloy B-3, Alloy C-276 (Hastelloy). Immersion length 2-40 in / 50-1000 mm.