Manufacturers OEM

First Sensor AG

Boschstr. 10, 82178 Puchheim

Telephone +49 89 80083-0
Fax +49 89 80083-33


Hall map

COMPAMED 2016 hall map (Hall 8a): stand L14

Fairground map

COMPAMED 2016 fairground map: Hall 8a

Our range of products

Product categories

  • 02  Electrical and electronic components
  • 02.29  Sensors


  • 02  Electrical and electronic components
  • 02.30  Pressure sensors

Pressure sensors

  • 13  Services
  • 13.01  Design, Research and Development Services
  • 13.01.13  Microtechnology


Company news




Nov 11, 2016

Ultra-low differential pressure sensors with I²C bus and 3 V supply

First Sensor presents a new version of its proven ultra-low differential pressure sensors with 3 V supply and linearized I²C bus output. The low profile, manifold-mountable LMI series sensors with measuring ranges from 25 Pa (0.1 inH2O) Full Scale are based on thermal micro-flow measurement within the silicon sensor chip. Due to their excellent sensitivity, accuracy, offset long term stability and long service life, LMI sensors are ideal for differential pressure gas flow measurement in bypass configuration. For battery powered applications the sensor features a low-power mode with minimal standby current.


The innovative micro-flow technology from First Sensor decreases the flow through the sensor by several orders of magnitude compared to other flow-based pressure sensors. Due to the extreme miniaturization of the flow channel the LMI series ensures superior immunity to both dust-laden and humid air. Additionally, there is no need to recalibrate or correct the sensor output signal when using long connecting tubes and input filters. Further, the semiconductor chip technology enables extremely low production tolerances and cost-effective mass production.


Key features of the LMI differential pressure sensors:

-        3 V supply and a linearized I²C bus output

-        Micro-flow channel integrated within the silicon sensor chip

-        Superior immunity to both dust-laden and humid air

-        Low profile, manifold-mountable


Due to their very high immunity to both dust-laden and humid air, LMI manifold-mountable pressure sensors from First Sensor achieve superior sensor lifetimes and expanded service intervals in HVAC and medical device applications. Therefore, the sensors are ideal for ultra-low differential pressure measurements e.g. in VAV controls, filter monitoring, burner controls, respiratory devices, anesthetic devices, CPAP machines, spirometers and oxygen concentrators.

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About us

Company details

First Sensor AG is one of the world's leading suppliers in the field of sensor systems. Our company develops and manufactures both standardized and tailor-made sensor solutions for applications in the Industrial, Medical and Mobility growth markets. With over 800 employees, we are represented at six German locations and also have development, production and sales sites in the USA, Canada, China, the Netherlands, Great Britain, France, Sweden and Denmark along with a worldwide partner network. First Sensor develops and manufactures high-quality, customer-specific sensor solutions for the detection of light, radiation, pressure, flow, level and acceleration. The company produces in-house and along the value-added chain from component to system level. First Sensor AG is listed in the Prime Standard of the German stock exchange in Frankfurt. We guarantee our compliance through regular successful certifications of the sites according to ISO/TS 16949, ISO 14001, EN ISO 13485, EN 9100 and ISO 9001 - matching the respective business field.

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Company data

Sales volume

100-199 Mio US $

Number of employees