As an industry-standard Pt-100 resistant temperature detector (RTD), the Rosemount 65 RTD Temperature Sensor is a single or dual element device designed per IEC 751 and capable of covering a wide range of temperatures. This sensor is vibration resistant and the connection heads feature fast mounting and replacement. This RTD includes a calibration option of Class A or B accuracy or a calibration schedule option with Callendar-Van Dusen constants.
Specifications
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Temperature Range |
–196 to 600 °C (–321 to 1112 °F) |
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Accuracy |
Class A or B |
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Lead Wires |
PTFE insulated, silver-coated, 0.21mm^2 (24 AWG) stranded copper wire |
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Time Constant / Response |
9 seconds maximum required to reach 50% sensor response when tested in flowing water according to IEC 751:1983, Amendments 1 and 2 |
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Insulation Resistance |
1,000 MΩ minimum insulation resistance when measured at 500 Vdc and at room temperature |
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Calibration Options |
IEC 751 Class A accuracy; Calibration schedule with Callendar-Van Dusen constants; MID custody transfer calibration |
Features
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Industry-standard sensor per IEC 751 with single or dual element design offers reliable and flexible performance |
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Resilient sensor withstands high vibration industrial applications |
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DIN-style sensor connection heads allow for quick mounting and replacement |
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Sensor selections cover a wide range of temperatures from –321 to 1112°F (–196 to 600°C) to meet process demands |
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Terminal block, flying leads and spring-loaded threaded adapters enable remote or integral mounting configuration |
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Callendar-Van Dusen constants allow for transmitter-sensor matching and provide the highest level of accuracy |
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Optional Class A accuracy ensures critical temperature measurement points meet tolerance standards and accuracy |
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Option for thermowell assembly increases protection from corrosive environments |
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Measurement Instrument Directive (MID) calibration options for custody transfer applications |
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Global hazardous location approvals meet local requirements |
How it Works
THERMOWELLS
Thermowells are closed-end metal tubes installed pressure-tight into process vessels or piping, protecting temperature sensors from harsh industrial process conditions, such as flow-induced stress, high pressure and corrosive chemicals. In addition, thermowells allow the sensor to be easily removed from the process for calibration or replacement without requiring a process shutdown or pipe and vessel drainage. Of the many thermowell designs, the most common are threaded, socket weld and flanged.
SENSORS
High process temperature, pressure and vibration make temperature measurement devices essential in industrial environments. Consistent process control requires accuracy, repeatability and stability and, while several types of sensors may be used, RTDs and T/Cs are the most common. Temperature measurements often have the greatest impact on production efficiency, quality and safety, therefore careful consideration should be used when selecting sensors within a temperature measurement system.
TRANSMITTERS
Smart temperature transmitters accept signals from all industry-standard resistance temperature detectors (RTD) and thermocouples, converting measurement input signals to a 4-20mA output signal. Available in many housing styles and enclosures, these devices can be mounted with a sensor/thermowell assembly at the measurement point or mounted remotely, transmitting a hard-wired or wireless signal. For application flexibility, these transmitters can also be configured locally or remotely.
