EC-20, EC-10 and EC-5 User’s Manual
4. Collecting Data
19
ø = 6.28 * 10
-7
* Raw
2
+ 1.37 x 10
-4
* Raw - 0.183(5)
for a Decagon datalogger or
ø = 2.63 * 10
-6
* mV
2
+ 5.07 x 10
-4
* mV - 0.0394(6)
for a datalogger with 2500 mV excitation.
NOTE: These calibration constants only apply to
2500mV excitations; use of these numbers with any
other excitation voltage will result in erroneous read-
ings!