Output 1:	Apparent dielectric permittivity (unit-less)		Range 1:	1 to 80
Output 2:	Temperature (°C)		Range 2:	-40 to 50
Output 3:			Range 3:	0 to 50

C8 soil calibration as provided by Decagon Devices on August 15, 2011.  Database uses coefficients A=17.8, B=40.9

Output 1:	Volts		Range 1:	-0.1 to 0.1
Output 2:			Range 2:	-2000 to 2000

Each sensor has its own calibration coefficient (k), see database. k is nominally 50μV / W / m² 
SC version of this sensor has control for an internal heater

Output 1:	Volts		Range 1:	0 to 2.5
Output 2:			Range 2:	0 to 5000, 0 to 7000 (depending on range)

k is either 5000ppm or 7000ppm

Output 1:	mV/V (unit-less)		Range 1:	-0.003 to 0.003
Output 2:			Range 2:	0 to 2*108

Calibration coefficient, k, is the output at the rated MaxLoad (kip). For mass calculations: m=F/a, where a is 9.80665 (gravity) and 1 kip = 4448.2216 newtons (N)

Output 1:	mV/V (unit-less)		Range 1:	-0.003 to 0.003
Output 2:			Range 2:	0 to 2*108

Calibration coefficient, k, is the output at the rated MaxLoad (lbs). The calibration parameters are provided to calculate lbs, therefore the conversion to kg requires 0.45359

Output 1:	Pulses (unit count)		Range 1:	0 to 600000
Output 2:			Range 2:	0 to ?

For the "-075" model, k = 500 pulses per liter. For the low flow "-032" model, k = 1000 pulses per liter.

Output 1:	Pulses (unit count)		Range 1:	0 to 60 (per minute)
Output 2:			Range 2:	0 to ?

The rain gauge is designed to measure inches of rain at 0.01” per tip. When used as a flow meter, each tip corresponds to a specific volume of water. With an 8” input area this equates to 0.5024 cu. in. or 0.008237 liters of water.

k (rainfall) = 0.01”/tip,  k (volume) = 0.008237 liters/tip

The calibration parameter, k, is determined empirically.

Output 1:	Pulses (unit count)		Range 1:	Unspecified
Output 2:			Range 2:	Unspecified

The rain gauge tipping bucket is designed to measure height of rain per tip. When used as a flow meter, each tip corresponds to a specific volume of water. 

The calibration parameter, k, is determined empirically.

Output 1:	Volts		Range 1:	0 to 2.5
Output 2:			Range 2:	500 to 1100

pmax and pmin refer to the range of the sensor. Vmax is the voltage at maximum calibrated pressure.

The value of "offset" is determined empirically

Output 1:	Volts		Range 1:	0 to 0.015
Output 2:	Volts		Range 2:	0 to 0.015
Output 3:	Volts		Range 3:	-0.005 to 0.005
Output 4:	Volts		Range 4:	-0.005 to 0.005
Output 5:	Resistance		Range 5:	80 to 130
Output 6:	Incoming shortwave intensity (Watts/m^2) =		Range 6:	0 to 1000
Output 7:	Outgoing shortwave Intensity (Watts/m^2) =		Range 7:	0 to 400
Output 8:	Temperature (K) =		Range 8:	220 to 335
Output 9:	Incoming long wave intensity (Watts/m^2) =		Range 9:	-150 to 0
Output 10:	Outgoing long wave intensity (Watts/m^2) =		Range 10:	-25 to 25

ka, kb, kc, and kd are the four calibration coefficients assumed to be in microvolts per W/m^2

Pt-100 RTD has a temperature relation approximated by theCallendar-Van Dusen equation. A =3.908x10^-3; B = -5.8019*10^-7; C = -4.2735*10^-12; Ro = 100; for the DIN standard RTD used in the CNR4.
Temperature formula is only valid for T > 272.15 (K)
A numeric approximation is used for T < 272.15 (K)

The calculations required to determine pressure are as follows:

The valve contains two SPST-NO relays. One relay is used to indicate an open valve, and the other is used to indicate a closed valve.
The output logged to the database is determined by the table below.

Moist soil heat capacity:  

 = bulk density (For LEO this is  1570 kg/m³)
 = density of water (999 kg/m^3)
 = the volumetric water content (decimal 0.0 to 0.5)
Cd = heat capacity of dry soil (0.89 kJ/kg/K)
Cw = heat capacity of water (4.179 kJ/kg/K)

Storage term
 = change in soil temperature  
d = depth
t = output interval

Soil heat flux at the surface,