Introducing IOLITEir-8xRTDp

The IOLITEir-8xRTDp is a new version of the 8-channel IOLITE temperature module. It is a channel-to-channel isolated DAQ device especially suitable for cryogenic temperature measurements using resistance temperature detectors (RTD).

In extremely low-temperature environments, such as cooling applications with liquid nitrogen, the Seebeck effect is often unavoidable. The phenomenon produces a voltage difference when the two conductors have a large temperature difference, in this case, the sensor and the measurement device. The generated voltage adds an error to the measurement. The IOLITEir-8xRTDp eliminates this DC offset error by using pulsed excitation, creating an AC coupling and, therefore, ensuring the accuracy of the temperature reading. 

The standard, DC excitation type is also available on the module as well as a voltage input mode with ranges of ±1 V and ±100 mV. The excitation mode (DC or AC) can be configured individually for each channel using the software. The input connector of the IOLITEir-8xRTDp is 6-pin 0B Series Lemo connector and the module uses a 24-bit ADC with sampling rates up to 100 S/s per channel. 

As with all standard IOLITE modules, the IOLITEir-8xRTDp is equipped with two EtherCAT buses, making it suitable for collecting data via DewesoftX while providing it to a real-time control system in parallel.  It can be mounted in all standard rack chassis (IOLITE-R12, IOLITE-R8, IOLITE-R8r).