Temperature Measurement... the Right Way

Smart Sensors, Inc. manufactures a complete line of thermocouples, RTDs, industrial assemblies and specialty temperature sensors for a wide variety of industrial applications and OEM markets.

With broad industry experience, technical expertise, and state-of-the-art facilities, Smart Sensors can meet the most demanding temperature measurement requirements.
 

RTDs are constructed using thin film technology. Thin film elements are made by depositing platinum or nickel on a substrate and trimming to the desired resistance. Ceramic elements are employed for cryogenic applications and used with a mineral insulated sheath for high vibration applications. Smart RTDs are available in platinum, nickel and copper and with several different resistance to temperature coefficient curves.

Recognizing the need for high accuracy in most sanitary applications, SSI is proud to introduce our Smart Sanitary Temperature Sensors. Standard accuracies as stated in this catalog are better than commercial RTD products, but we didn’t stop there. Our High Accuracy option guarantees the user superior accuracy and stability and is backed up by an accuracy statement certified by NIST traceability. As if this was not enough, with sensor matching we can virtually eliminate even the small uncertainty identified by our high accuracy certification.

Accuracy plus a product that is void of crevices and pits where bacteria can grow make this the SMART choice for all Sanitary and Clean In Place (CIP) temperature applications.

All thermocouples (unless other wise specified) are constructed using a metallic sheath and high purity mineral oxide insulation. This provides a rugged and bendable design that exceeds the temperature rating of non noble metal calibrations. Mineral oxide type thermocouples have a high insulation resistance and are suited for most process applications. Smart thermocouples are available in all calibrations with a variety of sheath materials and diameters.

In most process applications the temperature sensor is inserted into a thermowell or protection tube. This protects the sensor from its environment and facilitates easy removal and replacement. These assemblies generally consist of a head, nipple-union-nipple and thermowell. Smart industrial thermocouples and RTDs are available in virtually any calibration and resistance temperature coefficient.

Smart Sensors can provide a head for virtually any process application. From our rugged explosion proof head used in hazardous locations to our water resistant head that provides a weather tight seal or our plastic design that can withstand caustic wash downs for ClP and sanitary applications. These heads are available in Cast Aluminum, Stainless Steel, Cast Iron and plastic. The conventional threaded type and the new flip-top threadless design are available for your convenience. All metal heads can accept either a sensor terminal block or a DIN size temperature transmitter.
 

Proper temperature element protection starts with the selection of the thermowell or protection tube. Conditions that influence the selection, include the temperature, pressure, flow velocity, pipe size, insertion length and the process environment and medium. A variety of materials and process connections are available for both thermowells and protection tubes. All metallic wells are constructed in strict compliance with ASTM and ANSI specifications. For higher temperatures ceramic protection tubes are available. Fluid flowing by a thermowell forms a turbulent wake that has a defined frequency. The thermowell must have adequate stiffness so its natural frequency is greater than the wake frequency. Let Smart Sensors help you design your well around your process conditions. Free velocity calculations are a phone call away. Smart Sensors complete family of bar stock wells and protection tubes can provide safe and reliable protection for any process environment.

These cost effective designs are available using thermocouples or RTDs. They can be used in any application not requiring a thermowell. Gases or liquids cannot enter the head due to the sealed weld of the double-ended stainless steel fitting.

Smart Sensors can provide a replacement for any failed thermocouple or RTD. Choose between replacing the temperature element only or the entire assembly. Regardless of your choice, these designs allow replacement without removing the thermowell.

Transmitters can accept an input from thermocouples or RTDs and produce an analog or digital output. All outputs are linear with temperature. The instrument can be programmed using software (easily downloaded to your personal computer) or a common handheld programming device. A five year warranty is standard on all transmitters.

• Programmable Two-wire Transmitter - Type PT
• Programmable and Fixed Range - Type LCR and LCS
• Hart® Programmable - Type HC

Temperature profiling is important whenever multiple points of measurement are required over a broad measuring range. Multiple Sensor Assemblies or Multipoints as they are commonly referred to can be designed with using either thermocouples or RTDs and in some cases both. As illustrated above, secondary seals can be supplied for even greater safety assurance. These seals prevent process fluids or gasses from escaping in the event of a process upset. In critical applications component testing is recommended. Dye penetrated, X-ray, and hydrostatic testing are standard available tests.

In order to be effective these assemblies must be able to provide temperature point location with a tolerance of plus or minus .25 inches and comparable sensor accuracy throughout the entire measuring range. Our unique cross calibration method and positive point identification assures like sensor accuracy and accurate and safe performance.

Miniature thermocouples and RTDs are generally used where thermowells are not necessary and are commonly found in pilot plants, research and development, furnace, and OEM applications. Thermocouple constructions with diameters as small as .01 0 inches are available with grounded and ungrounded measuring junctions. All miniature calibrations can be provided with flexible leads and a variety of connector terminations.

Surface temperatures can be a difficult measurement. Special engineering and extensive testing of the Smart Sensor surface pad provides fast response and accurate surface measurement. Model 1500 shown above has been used extensively as the primary control element for freeze protection control loops. A retractable design that allows removal of the sensor while leaving the surface pad in place is also available. Smart sensor designs have be used to measure the skin temperature of vessels, pipes, boiler tubes, superheater tubes or where ever the process requires surface temperature measurement.

• Electric Trace Sensor
• Pipe Clamp Sensor
• Washer Thermocouple
• Tubeskin Thermocouple
• Oil Seal Sensor
• Heavy Duty Industrial Magnet Thermocouple
• Handheld Sensors
• Smart Sanitary Sensors

• Thermocouple Connector - Two Pole
• Miniature Thermocouple Connector
• Thermocouple Alloy Spade Lugs
• L Bracket
• Wire Clamp Bracket
• Miniature Wire Clamp Bracket
• Weather Proof Jackets
• Pipe Clamp Adapter
• Thermocouple Wire

For additional information and pricing on these and other products call us at 1.800.413.6623

or email sales@awc-corp.com  or visit our Requests web page.