LMS質量空氣流量傳感器是專門為測量與車輛排放和發動機控制相關的空氣量而開發的。根據熱膜風速計的測量原理，空氣質量流量傳感器由成對布置的溫度傳感器和加熱元件組成。這種布置允許雙向測量，這使得可檢測到回流和脈動。現代半導體熱膜技術可確保快速響應時間以及在整個生命周期中進行可靠，穩定的測量。特殊應用的質量空氣流量傳感器的校準還保證了高精度，完全符合各自系統的特性曲線。其緊湊的設計（帶有法蘭安裝件）不僅可以輕松集成到流道（管道）中，而且還保證了在各種系統中的靈活安裝。LMS還可以可選地配備一個溫度傳感器，用于介質溫度的附加測量。
產品應用
車輛的排放和發動機控制
加熱系統
空調技術應用
過程控制
氣體流量監測
過濾網監測
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) |
大圖 
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