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3.0 System Overview
3.3 Data Acquisition
Components
A WinDyn data acquisition system consists of at least two components. They are the sensor system and
the computer system.
NOTE:
Additional options and accessories that can be added to the system are described later in this
chapter.
The Sensor Box
The sensor box consists of a set of data acquisition
and control electronics mounted inside a sheet
metal sensor box and is the central core of data
acquisition. The box is normally mounted on the
absorber stand but can be installed on a boom, the
wall, a rolling stand, or on other support apparatus.
The sensor box contains the CPU circuit card,
sensor panels, and system interconnect panels.
The CPU measures and records all data and
generates control signals, then broadcasts this data
over an Ethernet network to display on the WinDyn
computer software.
The sensor box has slots for expansion panels
such as thermocouple panels, pressure panels,
analog inputs panels, and so on.
The system inputs signals from various sensors
and converts those signals into a digital format.
Airflow, fuel flow, and engine speed are measured
as frequencies. A load cell measures torque as an
analog voltage. Pressures and temperatures are
also measured as analog voltage. A barometric
pressure transducer is mounted on the CPU to
measure atmospheric conditions during the test.
Other sensors can be added as needed.
Do NOT adjust any of the potentiometers on the
2640 board. Contact your representative if you
have any questions about the safe operations of
our equipment and for service and advice.
IMPORTANT
Figure 3.2: The Sensor Box
