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参数资料
| 型号： | DEMOAPEXSENSOR |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 17/20页 |
| 文件大小： | 0K |
| 描述： | BOARD DESIGN ALTITUDE PRESSURE |
| 标准包装： | 1 |
| 传感器类型： | 加速计，压力，水位，高度计/气压计 |
| 传感范围： | 多范围 |
| 接口： | I²C，SPI，模拟 |
| 灵敏度： | 多重 |
| 电源电压： | 10 V |
| 嵌入式： | 是，MCU，8 位 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MPX2102，MPXV5004G，MPL115A2，MMA7361L |
| 产品目录页面： | 2808 (CN2011-ZH PDF) |
Waterlevel Implementation with the MPXV5004G
The DEMOAPEXSENSOR has the MPXV5004G gauge pressure sensor on board. This is located on the backside of the demo
board. It has a top port, which is to be used with the supplied high temp silicone hose.
Table 9. Operating Characteristics (V S = 5.0 V DC , T A = 25°C unless otherwise noted, P1 > P2)
Pressure Range
Characteristic
Symbol
P OP
Min
0
Typ
—
Max
3.92
Units
kPa
400
mm H 2 O
Supply Voltage
Supply Current
Span @ 306 mm H 2 O (3 kPa)
Full Scale Span @ 400 mm H 2 O (3.92 kPa)
Offset
Sensitivity
V S
I S
V FSS
V OFF
V/P
4.75
—
—
—
0.75
—
5.0
—
3.0
4.0
1.0
1.0
5.25
10
—
—
1.25
—
V DC
mAdc
V
V
V/kPa
Accuracy
0 to 100 mm H 2 O (10 to 60 ° C)
100 to 400 mm H 2 O (10 to 60 ° C)
0 to 400 mm H 2 O (10 to 60 ° C)
—
—
—
—
—
—
—
—
—
±1.5
±2.5
±6.25
%V FSS with auto zero
%V FSS with auto zero
%V FSS without auto zero
The part has a offset of 1V with a sensitivity of 9.8 mV/mm H 2 0. On the DEMOAPEXSENSOR the value is sampled with a 12-
bit ADC from the JM60 MCU. Note the following when considering waterlevel:
? 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
pressure seen at the sensor is the same, only dependent on liquid height.
Figure 8. Waterlevel Connection to Pressure Sensor
Curved Bottom
Improved resolution when tank
is almost empty
More vertical height per
less volume H 2 O
Figure 9. Hot Water Heater
Figure 10. Conical Bottom for Measurement
AN3956
Sensors
Freescale Semiconductor
17
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DEMO-AT3/4-XX32 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:AT-32032 and AT-41532 demonstration for 800-900 MHz applications |
| DEMO-AT32063 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:860 MHz cascode amplifier |
| DEMO-AT3XX11 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:AT-31011 2400 MHz 2 stage LNA amplifier; can also be used for AT-30511 or AT-32011 |
| DEMO-AT3XX33 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:900 MHz single stage LNA amplifier using AT-32033; circuit can also be used for AT-30533 or AT-31033 |
| DEMO-ATF3616-3 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:2 to 2.4 GHz single stage LNA using ATF-36163 |
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