首页02312 ꄲ 交通 ꄲ 汽车 ꄲ 发动机管理 ꄲ AAS-i2S-LMS空气质量流量传感器 - 用于排放控制和发动机管理

ꄲ后一个： Thermometrics传感器组件 | 废气再循环温度传感器（EGR）

LMS质量空气流量传感器是专门为测量与车辆排放和发动机控制相关的空气量而开发的。根据热膜风速计的测量原理，空气质量流量传感器由成对布置的温度传感器和加热元件组成。这种布置允许双向测量，这使得可检测到回流和脉动。现代半导体热膜技术可确保快速响应时间以及在整个生命周期中进行可靠，稳定的测量。特殊应用的质量空气流量传感器的校准还保证了高精度，完全符合各自系统的特性曲线。其紧凑的设计（带有法兰安装件）不仅可以轻松集成到流道（管道）中，而且还保证了在各种系统中的灵活安装。LMS还可以可选地配备一个温度传感器，用于介质温度的附加测量。

产品应用

车辆的排放和发动机控制
加热系统
空调技术应用
过程控制
气体流量监测
过滤网监测

Key features	Benefits
Semi-conductor hot film measurement element	· Fast response time
	· Reliable, stable measurement over the entire life cycle
Individual electronic calibration	· High level of accuracy
	· Application-specific characteristic curves
	· Diagnostic options
Integrated temperature sensor	· Simultaneous media temperature measurement
Compact and robust design with flange connection	· Simple and flexible integration in flow channels(pipes) and a wide variety of systems
	· Twist-proof installation
Bi-directional flow measurement	· Detection of backflows and pulsations

Measurement ranges
Air mass	0 – 50…0 – 3,000 kg/h1)
Temperature	-30…120°C

Electrical characteristics
Supply voltage	12 V (9…17 V)
Electrical characteristics
Supply voltage	12 V (9…17 V)
Air mass output signal	1…4.85 V, ratiometric to the reference voltage (main flow)
	1…0.33 V, ratiometric to the reference voltage (backflow)
Temperature output signal	NTC resistance output 2 k (25°C)
Reference voltage	5 V ± 0.2 V
Overvoltage protection	17 V
Reverse polarity protection	17 V
Diagnostic areas (detected sensor error)	< 4% and > 97.5% of the reference voltage

Accuracy
Total air mass error	2% of the measurement value (25°C) 4)
Total temperature error	± 1% (25°C), corresponding to the NTC characteristic curve
Response time (t63)	< 20 msec

Environmental conditions
Ambient temperature range	-30…120°C
Operating temperature range	-30…85°C
Media compatibility	Air
ESD (ISO/TR 10605)	4 kV to contacts
EMC (ISO 11452-5)	100 V/m (Strip line)

Mechanical characteristics
Measurement element Al, Si and Si3N4 , NiCr, Al2O3
Material case	PBT
Mechanical connection	Flange
Electrical connector	Bosch Compact, VDA Task Force
Installation position	Defined by the reference pipe, inlet to the sensor element should be located approximately in the middle of the reference pipe diameter.
Weight Approx.	56 g