Measurement Computing PointScan 300 Series rev.1.0 - Manual (Page 35)

PointScan/300 User’s Manual 9-12-01 Analog Input Modules 6-7
PointScan/306
6 RTD Inputs (Platinum)
PointScan/307
6 RTD Inputs (Copper)
Each RTD input module has six channels that accept either 100 ohm platinum RTD inputs (PointScan/306)
or 10 ohm copper RTD inputs (PointScan/307). Three screw terminals, compatible only with the universal
wiring base, are provided for each input channel, to support two, three or four wire RTD connections.
Pulsed Current Feature
To minimize self heating of the RTD, the measurement current is pulsed on during the measurement period
only.
RTD Linearization
RTD linearization is performed in the gateway firmware. Both American and European linearization
standards are supported, and are selectable in the IO Toolkit program.
RTD Input Scaling
All 100 ohm platinum RTD inputs are reported as unscaled values from -2000 to 8500 (-200 to 850 ºC),
with a resolution of 0.1 degrees C. All 10 ohm copper RTD inputs are reported as unscaled values from -
2000 to 2600 (-200 to 260 ºC), with a resolution of 0.1 ºC.