Temperature and pressure sensors
The German company Jumo offers a range of temperature and pressure sensors with CANopen output. The sensors are available in different materials and based on different measuring principles.
THE CANTRANS T RTD TEMPERATURE PROBE is suitable for temperatures from -50 °C to +450 °C. It is available as a single or double RTD temperature probe and comes in a vibration-resistant design. The measuring insert is equipped with a Pt1000 temperature sensor according to DIN EN 60751, class B as standard. The measured temperature value is digitized, linearized, and made available through the CANopen protocol for further processing (CAN slave). A number of additional functions are achieved with the CiA 404 device profile. All settings can be made using CANopen software tools.
RTD temperature probes are the preferred choice for temperature measurement in liquids and gases. An important factor for selecting this installation type is its ability to form reliable seals for vacuum and high pressure applications. Areas of application are, amongst others, in medical technology, mechanical engineering, drive technology, utility vehicles, and railroad systems.
The CANtrans p Ceramic pressure transmitter has a measuring range from 0 bar to 1,6 bar up to 0 to 100 bar relative pressure. Its measuring principle is based on an aluminum oxide ceramic thick-film sensor. The sensor is elastomer-sealed, it transmits measured values in any units to a CANopen network, and it comes with protection level IP67. The CAN module ID and the CAN bit-rate are set either with LSS or SDO.
The dimensions of Ø 27 mm × 65 mm allow a flexible installation position with simple wiring and assembly. Uniform parameterization and diagnosis of the entire CAN system down to the sensor level results in savings during startup and maintenance. Additional functions like linearization and scaling, measuring range monitoring, fine adjustment, and the drag indicator function relieve the load on the PLC. Possible applications include wind power units, mobile hydraulics, boiler engineering, medical technology, packaging machines, plastics processing, mobile vehicles and plants, and rail vehicles.
Pressure transmitters are used to record relative and absolute pressures in liquid and gaseous media. The pressure transmitter works according to the thick-film strain gauge measuring principle. The base material of the sensor element is aluminum oxide ceramic (Al2O3). The measured pressure value is digitized and made available through the CANopen protocol for further processing (CAN slave). A number of additional functions are achieved with the CiA 404 device profile. All settings can be made using standard CANopen software tools.
The CANtrans p pressure transmitter offers measuring ranges from 0 mbar to 250 mbar up to 0 bar to 600 bar relative pressure, or 0 bar to 1 bar up to 0 bar to 25 bar absolute pressure. It has a linearized and temperature-compensated measuring range. The used measuring principle is the piezoresistive or thin-film (strain gauge) principle. The stainless steel measuring cell is fully welded, and while the regular temperature range of the medium is -40 °C to +125 °C, an optional high-temperature version works up to 200 °C (SIP and CIP compatible). The sensor has protection level IP67.
The transmitter has the same dimensions as the ceramic transmitter (Ø 27 mm × 65 mm) and the CAN module ID and the CAN bit-rate are also set either with LSS or SDO.
The CANtrans pT pressure and temperature transmitter has measuring ranges from 0 mbar to 250 mbar up to 0 bar to 400 bar relative pressure, or 0 mbar to 600 mbar up to 0 bar to 25 bar absolute pressure. Its measuring principle is also the piezoresistive or thin-film (strain gauge) principle. The temperature of the medium can range from -50 °C to +125 °C. It also has protection level IP67.
The device profile has been developed and designed in accordance with the CiA 404 standard. LSS is supported for setting the module ID and the bit-rate. To allow for easy operation, the setting can be configured using a software tool. The pressure and temperature measured values are digitized and made available for further processing through the CANopen protocol (CAN slave). A number of additional functions are achieved with the CiA 404 device profile.
Redundant sensors, a heartbeat function, node guarding, and continuous self-diagnosis provide reliability. The data is transmitted from the sensor to the control system without interference (pressure sampling rate: 1 ms, temperature sampling rate: 250 ms). Additional functions with linearization and scaling, measuring range monitoring, fine adjustment, and the drag indicator function relieve the load on the PLC.
This pressure and temperature transmitter is used to record relative and absolute pressures in liquid and gaseous media. In addition, the integrated temperature sensor measures the temperature of the medium directly at the pressure diaphragm. The temperature transmitter receives the measured values from a Pt1000 sensor.
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