C4 pathway A pathway of carbon fixation, found most commonly in tropical plants that have high rates of growth and photosynthesis and that are adapted to high temperatures, strong light, low carbon dioxide levels, and low water supply. Its importance lies mainly in its reduction of photorespiration.
PT 100 RTD means Resistance temperature detector(RTD) of platinum with 100 ohms resistance at zero degree centigrade.
There are two sources of error in RTD measurements by the dataTaker. The first is due to errors in resistance measurement (excluding cable wire effects), which is specified at Â±0.1% over the logger temperature range of 10 to 40 Deg C. This systematic error can however be calibrated out.he dataTaker also supports copper RTDs, which have a temperature coefficient of 0.0039 Ohm/Ohm/Deg C. The copper RTD types supported by the dataTaker are all assumed to have a sensor resistance at 0.0 Deg C of 100.0 Ohms.