1.5 PSI and 100 PSI pressure sensor

Description

The electronic circuit core of the pressure probes is a piezoresistive sensor which produces a voltage signal proportional to the pressure difference applied to its two inputs. When pressure is applied to vacuum input, the output voltage will change. The "pressure" input reacts inversely, so that if you apply a pressure, the voltage reading will change in the opposite direction.

Both kit, 1.5 PSI and 100 PSI, are basically similar except for the range of their pressure sensor

Use: (100 PSI) If we apply 100 PSI in the pressure port and 50 PSI in the vacuum port, the probe output will indicate 50 PSI. The relation between voltage and pressure is linear.

Technical specifications

1.5 PSI sensor (10 kPa)

Sensor    balle_verte.gif (257 bytes) MPX10DP, Motorola
Operational range    balle_verte.gif (257 bytes) 0 à 10 kPa (0 à 1.5 PSI)
Maximum pressure    balle_verte.gif (257 bytes) 100 kPa
Sensor sensibility before amplification    balle_verte.gif (257 bytes) 3,5 mV/kPa
Response time    balle_verte.gif (257 bytes) 1 ms

100 PSI sensor (700 kPa)

Sensor    balle_verte.gif (257 bytes) MPX700DP, Motorola
Operational range    balle_verte.gif (257 bytes) 0 à 700 kPa (0 à 100 PSI)
Maximum pressure    balle_verte.gif (257 bytes) 2100 kPa
Sensor sensibility before amplification    balle_verte.gif (257 bytes) 86 µV/kPa
Response time    balle_verte.gif (257 bytes) 1 ms

Components included in the sensor kit

A pressure sensor kit includes all material needed for it's assembly :

terminals, wiring cable, resistors, capacitors, diodes
printed circuit board
integrated circuits
pressure sensor
plastic box, screw

Prices:

Pressure sensor kit :

100 PSI :  35 $ (can)*   25 $ (us)*
1.5 PSI :   35 $ (can)*   25 $ (us)*

Schematic and assembly plan: 7 $ (can)* 5 $ (us)*

* Plus taxes, shipping and handling

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