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EC1120 Probe User's Manual <br />4. Collecting Data <br />NOTE: All Decagon readout devices use either a2.5V or <br />3V excitation, so the remainder of the discussion assumes <br />this as the excitation. If other voltages are used, adjust- <br />ments to the calibration equations provided will be <br />needed. <br />Connect the wires to the datalogger as shown, with the <br />supply wire connected to the excitation, the analog out <br />wire to an analog input, and the bare ground wire to <br />ground: <br />Analog <br />Supply out Ground <br />I I I <br />Exc. H L G <br />Analog <br />In <br />Datalogger <br />Sample Program <br />The following program is an example that can be used <br />with Campbell Scientific's CR10X datalogger and our <br />E 2 probes at a 2500mv excitation: <br />ft== IWtVlzer and offiet in uz mfimm 2 (P4) =zeyt <br />W r&dzng <br />w&nn'�� vater mr&V to in' nf '. A ho, (such as the ore in <br />12 <br />r <br />F <br />0 <br />r <br />H <br />I <br />E <br />11 <br />�1 <br />11� <br />F <br />