Family Owned & Operated Since 1971• Bakersfield, CA
Thermometers, thermocouples, RTDs, dry-block sources, and temperature indicators
1925 products
The RTCt-157 extends the low end to -45°C while keeping the 155°C top, dual-zone heating, and accuracy down to ±0.040°C with an external reference sensor, for reference calibration that reaches further into the cold range.
Electronic indicating temperature transmitter/switch. Configured to order — base list price shown.
Panel-Mount Multifunction Calibrator (PIE 820 Panel-Mount Variant)
Panel-Mount Multifunction Diagnostic Calibrator (PIE 830 Panel-Mount Variant)
Non-intrusive pipe-clamp temperature sensor — the key piece of Rosemount X-well Technology. Wraps around the outside of a pipe with a thermally-conductive clamp to measure internal process temperature without a thermowell or process penetration. Single-element 4-wire (P1) or dual-element 3-wire (P2) silver-tip RTD, -58 to 572 °F. Pairs factory-assembled with a Rosemount 3144S / 3144P / 648 transmitter and an X-well thermal-conductivity algorithm to back-calculate the internal process temperature. Wide pipe-size selection — DN15 through DN1500 / ½-60 inch — with clamp materials in 316 SST, 304 SST, Super Duplex, and Carbon Steel.
Barstock temperature thermowell — protective housing for temperature sensors. Standard bore diameter 0.26 in (6.6 mm), tip wall thickness 0.25 in (6.4 mm). Four mounting styles (Threaded, Flanged, Van Stone, Welded), three stem profiles (Straight, Tapered, Stepped), wide material selection (316/316L, 304/304L, Carbon Steel, Chrome-Moly, Monel, Hastelloy, Nickel, Super Duplex). Immersion length custom per process (1-100 in / 25-2500 mm) — specified at quote. NORSOK material codes (SD, CB, NK, DT) require Q8 Material Certificate.
Tubular protection sleeve for temperature sensors in Chemical and Pharmaceutical industries — different from the 114C barstock thermowell platform. Designed for fast time response (thin wall) or applications requiring long immersion lengths beyond what barstock thermowells economically support. Standard bore diameter 7 mm (0.28 in), tip wall thickness 3 mm (0.12 in); NAMUR-bore variant reduces to 6 mm bore / 5 mm wall. Threaded only — NPT, BSPT, BSPF, and metric process connections. Immersion length 50-2500 mm in 5 mm increments. Materials: 316/316L SST and 316Ti SST.
Programmable head-mount temperature transmitter. PC-configurable for multiple sensor type inputs (2-, 3-, 4-wire RTDs and most common thermocouples) with cost-effective installation versus running sensor wires direct to the control system. DIN-B form factor mounts inside the sensor's connection head. Wide enclosure selection — aluminum, SST, polypropylene BUZ, sanitary DIN-A/DIN-B, and TZ-A/BK polyamide — for hygienic, hazardous, and harsh-environment process. Worldwide hazardous-area approvals (FM, CSA, ATEX, IECEx).
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.