Campbell Scientific Wireless Sensor Network (CWB100, CWS220, and CWS900) - Manual (Page 58)

Appendix B. Measurement Names and Meanings
B.3 CWS900 Default Names
Default
Name
Meaning
Units
SE1 Single-ended DC voltage measured
on pin 5 with respect to pin 3 Volts, may need additional
processing to convert to
engineering units
SE2 Single-ended DC voltage measured
on pin 6 with respect to pin 3 Volts, may need additional
processing to convert to
engineering units
SE3 Single-ended DC voltage measured
on pin 1 with respect to pin 3 Volts, may need additional
processing to convert to
engineering units
DF1 Differential DC voltage measured
between pin 5 (high) and pin 6 (low) Volts, may need additional
processing to convert to
engineering units
TC Total count of switch closures
measured since sensor configuration Integer, requires additional
processing to convert to
engineering units
IC Number of switch closures detected
during polling interval Integer, requires additional
processing to convert to
engineering units
MF Maximum frequency of pulses
detected during polling interval Hz, may need additional
processing to convert to
engineering units
AF Average frequency of pulses
detected during polling interval Hz, may need additional
processing to convert to
engineering units
Ts Temperature of sensor connected to
CWS900 °C
RH Relative humidity %
LWS Leaf wetness sensor voltage Volts
DO Voltage returned from CS511
Dissolved Oxygen Sensor Volts, requires additional
processing to convert to DO
pH Voltage returned from CS525 ISFET
pH probe Volts, requires additional
processing to convert to pH
SS Signal strength of last received radio
transmission Unitless, ranging from 0 (no
signal) to 32 (full signal)
B-2