PLX Devices SM-FP User Manual
Page 3
Users Guide: iMFD Sensor Module
Version 1.0 March 14, 2008
www.plxdevices.com
(408)745-7591
(Figure 5)
Using the Sensor Module Analog Output:
1.
The SM-FluidPressure has one 0-5V analog output designed to be interfaced with a number of aftermarket products such as
engine management systems, data loggers and tuning electronics. It is not mandatory for you to use this output for your
unit to properly function.
(Figure 6)
Linear Analog Output (0-5V)
Pressure Versus Output Voltage
Voltage = 0.025 * Pressure (PSI)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0
50
100
150
200
Pressure PSI
Ou
tp
u
t V
o
lta
g
e
(Figure 7)
Using the integrated fixed low pressure Warning Feature:
1.
The SM-FluidPressure sensor itself has an integrated warning at 11.4psi. When the pressure is below and at 11.4 psi,
this integrated warning will be activated. The following illustration shows the connection using either a lamp of a buzzer. If
using 12V as power source, make sure that the 12-16 V capable lamp or buzzer is used. If using a 3.3 v from analog port
provide from SM-FP, then please use a 3.3V capable lamp or buzzer. Some devices, however, can handle wide ranges of
voltage inputs:
Sample Buzzer with 16v -5v power in capable: Mallory SONALERT II MSR516W