Cali. Low & Cali. High; Alarm/Excitation Selection - Microedge Instruments iLog Series User Manual

If you are recording the voltage output of a transducer or transmitter and the range of the
voltage refers to another measurement unit, you will need to create your own equation for
this conversion. For instance, if your CO2 transducer outputs 0 – 5VDC representing 0 –
5000PPM of CO2, the custom equation you need to create looks like this:
public double CO2Equation(double
{
double output;
output = 5000 * Input / 5 ;
return output;
}
For detailed instructions on how to create a custom equation please refer to the SiteView
User's Manual available for download online.
Cali. Low & Cali. High
These two fields specify the custom calibration values that are used for measurement
adjustment.
Cali. Low value specifies the digital value that is over zero when the input value is in the low
range value (for 0 – 5 VDC channel the low range is zero volt). The equation will subtract
this value from the original digital value when doing the conversion.
Cali. High value specifies the digital value that is over 65535 when the input value is in the
high range value (for 0 – 5VDC channel the high range is 5 volt). The equation will subtract
this value from the original digital value when doing the conversion.
The valid range for these two parameters is from –32768 to 32767.
These two parameters for each channel were originally set to zero when the logger was first
released.
If you have finished the Cali. Low and Cali. High calibration instructed in the later chapter,
the "Cali. Low" and "Cali. High" values may be readjusted.
Alarm and Excitation:

Alarm/Excitation Selection

This field specifies how Alarm1 and A2/E terminals are being controlled by alarm state
and/or excitation settings. Available settings are:
iLog Data Loggers User's Manual
Input)
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