Pyromation, Inc., "The Temperature Sensing Company" offers a large variety of temperature sensors as well as custom designs to solve unique measurement problems.  Pyromation also offers thermowells, RTD elements, thermocouples, and accessories such as cable, connecting heads and terminal blocks.

ITT Neo-Dyn manufacturers temperature switches for general purpose, explosion-proof and direct or capillary mounted applications.

Rosemount, Inc.  - Rosemount continues to set the standard for temperature measurement with recent enhancements to their line of temperature transmitters. Rosemount is able to  provide a complete solution for your temperature measurement needs. In addition to temperature transmitters, Rosemount offers a large selection of high quality temperature sensors, thermowells, connection heads and accessories.

Model  3244MV Multivariable Temperature Transmitters
The ultimate transmitter for all temperature measurement needs.  The Models 3144 and 3244MV temperature transmitters provide superior accuracy, stability, and reliability, making them the industry-leading temperature transmitters used in control and safety applications. The Model 3144 is a single-sensor input transmitter. The Model 3244MV has a dual-sensor input capability that allows the transmitter to accept simultaneous inputs from two independent sensors. You can use this transmitter for measuring differential temperatures, averaging temperature or redundant temperature measurement.