Rosemount 644 Temperature Transmitter with 65 Single Point Sensor
Single point temperature sensors are used in applications with lower requirements on volume measurements, or when it is not possible to use a multiple spot temperature sensor due to installation restrictions (e.g. an LPG tank with thermowell).
A Rosemount 65 series, platinum RTD (Resistance Temperature Detectors) single point temperature sensor is ordered integrated with the 644 Temperature Transmitter.
Temperature data is distributed to TankMaster or a DCS/host system via the 2410 tank hub.
The 65 series sensor can be ordered with flying leads, or a terminal block. Ordered with flying leads, the sensor is designed to be used with the 644 Temperature Transmitter attached directly to the sensor. The flying lead configuration allows removal of the sensor and transmitter as one assembly.
It is also possible to order the sensor installed in a thermwell to be used for pressurized tanks and when there is a requirement to be able to replace a sensor without having to drain or evacuate the process.
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- Cost efficient temperature measurement alternative
- Sensor can be pre-installed in thermowell, which makes it suitable for LPG tanks
- Option to integrate sensor with temperature transmitter
Reference accuracy:
± 0.15 °C (± 0.27 °F) over the whole temperature measuring range
Temperature measuring range:
– 50 to 450 °C (–58 to 842 °F) or –196 to 600 °C (–321 to 1112 °F)
Resolution:
± 0.1 °C (± 0.1 °F) according to API chapter 7 and 12
Ambient operating temperature:
-40 to 85 °C (-40 to 185 °F)
LCD: -20 to 85 °C (-4 to 185 °F)
Element type:
Pt-100 spot elements according to EN 60751. 3-wire or 4-wire, dual or single element design
Accuracy:
DIN Class B
Pressure range:
According to flange/thermowell pressure rating
Temperature range:
– 50 to 450 °C (–58 to 842 °F) or –196 to 600 °C (–321 to 1112 °F)
Ambient temperature:
– 40 to 85 °C (–40 to 185 °F)
Ingress protection:
Rosemount Series 65 sensor assemblies are IP68 and NEMA 4X. This rating is applicable only for complete assemblies including either:
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