YSI WaterLog Series, Руководство пользователя

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returned from the sensor (as noted by the Analog Value in the bottom left of the screen) is the
difference between the two analog inputs.
Number of Samples: This option allows the user to change the number of samples that are
averaged from the analog input when the analog channel is scanned. The user can change the
number of samples to any number between 1 and 1000. Due to the high 24-bit resolution of the
A/D, fewer samples are needed for an accurate reading compared to traditional A/Ds. Each
measurement takes an average of 0.0375 seconds. Thus if a large number of samples are
selected, the scan process for that particular analog channel will take longer. Generally only a
few samples are necessary for an extremely accurate reading.
Est. Time(sec): The Estimated Time will be updated as the Number of Samples changes. This
number is a simple calculation of 0.0375 * Number of Samples.
5V Warmup(sec): Some sensors may require the 5V excitation to supply power for a specified
period of time before a measurement should be taken. For these sensors, a warmup time in
seconds can be specified using this option. For example, if a 5V Warmup of 3 is defined, the
System 5000
will wake up, turn the 5V Excitation on, wait for 3 seconds, and then retrieve the
TM
measurement from the selected Channel.
To add a Slope, Offset, or Custom Function to the measured value, use Math & Data Options.
5-4 Inputs
System 5000
TM