RTD Measurement for VMEbus – VME390
The VME390 features 24 two, three or four wire high-accuracy PT100 measurement channels. Each channel has programmable alarm limits on which an interrupt can be issued.
Quad. local DSPs (TMS320C203) perform linearization, auto-calibration and alarm-limit checking. Sensor-data is available in °C, °F, K and Ohms. All inputs are optically isolated from the system.
This VMEbus board has a 6U form and is also available as 3U VMEbus board.
> Sigma/Delta ADC with 16-bit resolution
> Excitation current: 1mA
> 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 values continuously updated in dual-ported SRAM
> Measurement range: -200°C .. +850°C
> Up to 7.5Hz output update rate
VME390 datasheet – product datasheet