MoTeC SDL - Manual (Page 11)

MoTeC Overview 9
• 2 Wheel Speed
Expander Inputs
Additionally one E888 expander may be connected to read from 8 K-type
thermocouples.
Internal Sensors
The SDL also includes internal sensors for G-Force Lateral, G-Force Vertical,
Battery Voltage and SDL Internal Temperature.
Sensors
Different types of sensors are available to suit different types of
measurements.
Sensors convert a physical measurement (e.g. Pressure) into an electrical
signal (e.g. Volts). Different types of sensors generate different types of
electrical signals. For example most temperature sensors convert the
temperature into a variable resistance signal which may be measured by the
SDL Temperature inputs, however most wheel speed sensors generate a
variable frequency signal which must be connected to either a Digital input or
a Speed input.
Calibration
Calibration is the process of converting the electrical value, e.g. Volts into a
number that represents the physical value, e.g. Temperature.
All inputs can be calibrated to suit the connected sensor.
The calibrations can be selected from a number of predefined calibrations
provided by MoTeC, or they can be entered by the user.
Analog Voltage Inputs
The 8 Analog Voltage inputs are normally used to measure the signals from
analog voltage type sensors, i.e. sensors with variable voltage outputs, such
as:
• Rotary or linear potentiometers
• Signal conditioned 3 wire pressure sensors
• Thermocouple
amplifiers
• Accelerometers