RTD Measurement for CompactPCI


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RTD Measurement for CompactPCI – CPCI390

The CPCI390 has a 3U form factor and features six 2-, 3-, or 4-wire high-accuracy RTD measurement channels. Each channel has programmable alarm limits on which an interrupt can be issued. The local DSP (TMS320C203) performs linearization, auto-calibration and alarm limit checking. Sensordata is available in °C, °F, K and Ohm. All inputs are optically isolated from the system.

This CompactPCI card is availabe in a 3U and a 6U form factor.


Sigma/Delta ADC with 16-bit resolution
PT100 linearization (IEC751-1983, DIN43760-1980, JIS C1604-1989)
Programmable minimum/maximum value alarms
Auto calibration
No potentiometers
Analog front-end is optically isolated
On-board DC/DC converter for isolated power supply
Data acquisition handled by TMS320C203 DSP, transparent for user
Measurement range: -200°C .. +850°C
Excitation current: 1mA


CPCI390 datasheet – product datasheet