Adder Pulses Configuration - Digital/Analog Pulses
View inputs arrangement for the digital or analog high frequency pulses counting of
Select the option up on the left in the configuration window:
• Counts to get the total number of pulses.
• Frequency to get the frequency (in Hz) of the input signal.
Name
Identification name of the sensor. You can assign the name, for example, of the sensor model, or the type of measured parameter. The name should begin with a letter and can be maximum 12 characters long. The name unequivocally identifies the measurement being input; you cannot assign the same name to multiple measurements.
Unit
Unit of measurement of the quantity detected by the sensor. It should begin with a letter and can be maximum 12 characters long. The unit of measurement should be in agreement with the values of the Offset and Gain parameters.
Channel PULSE
It indicates the number of the PULSE input to which the sensor should be connected. The software automatically assigns the first input free. The number cannot be changed by the user.
Input Type
Select the Digital option if the type of input signal is digital or Analog if it is analog.
In both cases, the threshold voltages to recognize the input pulse match the standard TTL logic.
Offset and Gain
The value recorded in the datalogger is the result of a linear formula applied to the measured value. If you select the Counts option, the formula is:
Value recorded = Offset + (Gain x Count)
If you select the Frequency option, the formula is:
Value recorded = Offset + (Gain x Frequency)
The input of proper Offset and Gain values, allows converting the measured input value into the value of the corresponding physical quantity, and to directly record the physical quantity value in the datalogger (please see the datalogger operating manual for the Offset and Gain values calculation modes according to the sensors' measurement ranges). You should only enter the numeric value, without unit of measurement, in the Offset and Gain fields. The unit of measurement should be entered in the Unit field.
Error messages
If the configuration parameters are not correctly input, you can get the following error messages.
The name and Unit fields are required !
Cause: the identification name or the unit of measurement fields were not filled.
There is just an equivalent Name !
Cause: you previously entered a sensor with the same name. You should change the identification name.
Gain must be not zero !
Cause: the Gain field has not been filled or zero has been entered.