Fourier DataNet, Руководство пользователя

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3.7.8. Frequency/Pulse Counter
Connect the signal wires to In-4 terminal blocks, and select
Frequency or Pulse counter for Input 4 from the logger
Setup window in the DataNet software. Inputs 1 to 3 are still
available for other sensors.
The Frequency/Pulse counter is optically isolated from the
internal circuitry and can simultaneously measure a signal
source, together with another input.
3.7.9. User Defined Sensors
DataNet provides a simple and straightforward tool for
defining a limited number of custom sensors. Almost any
sensor or transducer with 0 – 1 V or 4 – 20 mA output is
accepted by the DataNet logger and its electrical units are
automatically scaled to meaningful user-defined engineering
units.
The sensor definitions are stored in the logger’s
memory and
are added to the sensors list. The sensor’s readings are
displayed in the user defined units only in the DataNet
software. Future versions will also support displaying the user
defined engineering units on the logger LCD.
Refer to section
4.5.1 for more details.
3.7.10. Sensor Alarms
Via the software, users can define minimum and maximum
alarm levels for each input individually. Users can define pre-
low and pre-high alarm levels, for an additional level of safety
in case the logger is approaching an actual breach of alarm.