DEMOAPEXSENSOR Freescale Semiconductor, DEMOAPEXSENSOR Datasheet - Page 17

• Manufacturer Part Number: DEMOAPEXSENSOR
• Description: BOARD DESIGN ALTITUDE PRESSURE
• Manufacturer: Freescale Semiconductor

Specifications of DEMOAPEXSENSOR

• Sensor Type: Accelerometer, Pressure, Water Level, Altimeter/Barometer
• Sensing Range: Multiple Ranges
• Interface: I²C, SPI, Analog
• Sensitivity: Multiple
• Voltage - Supply: 10 V
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MPX2102, MPXV5004G, MPL115A2, MMA7361L
• Acceleration: 6 g
• Sensing Axis: Triple Axis
• Output Type: Digital
• Interface Type: I2C, SPI
• Operating Voltage: 16 V
• Operating Current: 10 mA
• Leaded Process Compatible: Yes
• Peak Reflow Compatible (260 C): Yes
• Rohs Compliant: Yes
• Silicon Manufacturer: Freescale
• Silicon Core Number: MPXM2102A, MPXV5004G, MPL115A2, MMA7361L
• Kit Application Type: Sensing - Sampling Kit / Related Components
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: MPL115A, MPXM102A, MPXV5004G

Table 9. Operating Characteristics (V
Waterlevel Implementation with the MPXV5004G
board. It has a top port, which is to be used with the supplied high temp silicone hose.
bit ADC from the JM60 MCU. Note the following when considering waterlevel:
Sensors
Freescale Semiconductor
Pressure Range
Supply Voltage
Supply Current
Span @ 306 mm H
Full Scale Span @ 400 mm H
Offset
Sensitivity
Accuracy
The DEMOAPEXSENSOR has the MPXV5004G gauge pressure sensor on board. This is located on the backside of the demo
The output of the MPXV5004G is shown in
The part has a offset of 1V with a sensitivity of 9.8 mV/mm H
• It is important to implement Auto Zero (AN1636) to improve accuracy.
• Calibration can be done, ideally with a two point calibration.
• The sensor must be implemented with an air column buffer between the liquid and the sensor. This is done with a section
• It is a gauge application, so the pressure measured is with respect to barometric pressure; when elevation varies, the
of tubing as in
pressure seen at the sensor is the same, only dependent on liquid height.
Figure 9. Hot Water Heater
2
O (3 kPa)
Characteristic
Figure
100 to 400 mm H
0 to 100 mm H
0 to 400 mm H
2
O (3.92 kPa)
8.
Figure 8. Waterlevel Connection to Pressure Sensor
2
2
2
O (10 to 60°C)
O (10 to 60°C)
O (10 to 60°C)
S
= 5.0 V
Table
DC
, T
9.
A
Symbol
= 25°C unless otherwise noted, P1 > P2)
V
V
P
V/P
—
—
—
V
FSS
OFF
I
OP
S
S
2
0. On the DEMOAPEXSENSOR the value is sampled with a 12-
Min
4.75
0.75
—
—
—
—
—
—
—
0
Figure 10. Conical Bottom for Measurement
Typ
—
—
—
5.0
3.0
4.0
1.0
1.0
—
—
±6.25
Max
±1.5
±2.5
3.92
5.25
1.25
400
10
—
—
—
Curved Bottom
Improved resolution when tank
is almost empty
More vertical height per
less volume H
%V
%V
%V
FSS
FSS
FSS
without auto zero
2
mm H
O
with auto zero
with auto zero
Units
mAdc
V/kPa
V
kPa
V
V
DC
2
O
AN3956
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