Pressure sensors
Reliable, precise

LHD ULTRA micro-flow differential pressure sensor

Innovative 2-in-1 design for ultra-precise applications in the low-pressure range.

None of the restrictions of conventionally designed pressure sensors apply to the LHD ULTRA: Product developers and users are no longer bound by precision limitations in the upper or lower pressure range. Our new flow-based 2-in-1 differential pressure sensor measures pressure fluctuations in the entire highly dynamic range of -5,000 Pa to +5,000 Pa with sub-pascal accuracy. This makes the LHD ULTRA ideal for applications that require high precision, an extended measuring range, and the convenience of a single component.

Ideal for medical applications

Ideal for medical applications

  • Ventilators
  • Spirometers
  • Sleep apnea therapy devices (CPAP devices)
  • Sleep diagnosis equipment
  • Nebulizers
  • Oxygen conservers/concentrators
  • Insufflators/endoscopy

Ideal for industrial applications

Ideal for industrial applications

  • Air conditioning (HVAC)
  • Volume flow control (VAV)
  • Filter monitoring
  • Burner control
  • Fuel cells
  • Gas leak detection
  • Extractor hoods
  • Measuring technology
  • Safety systems

 

Ultra-precise in the highly dynamic range up to ±5,000 Pa.

2 sensor elements, 2 micro-flow channels, 24-bit on-board controller.

2 sensor elements, 2 micro-flow channels, 24-bit on-board controller.

 

The sensor solution for the problem of measuring in the highly dynamic range.

For the first time ever, we have combined two calorimetric micro-flow channels and two sensor elements on a single chip. Sensing element 1 ensures precise measurement of low differential pressures with high resolution, and sensing element 2 is optimized for pressures in the upper measuring range. A fast-response 24-bit on-board controller delivers precise measurement results across the entire dynamic measuring range.

  • Resolution of ~0.05 Pa (0.0002 inH2O) at low pressure
  • Outstanding overall accuracy higher than 1.5% of the measured value
  • 24-bit ADC on-board microcontroller for fast response behavior
  • On-board temperature sensor and barometer
LHD Ultra data sheet

 

Ultra-flexible in development and application.

3 pressure range levels, unidirectional or bidirectional, installation height just 7.4 mm.

Ultra-flexible in development and application.

 

Smart sensor design for fast adaptation to customer's intended application.

With an installation height of just 7.4 mm including pressure connections, the flat sensor is perfectly suited to space-saving installation in manifolds.
A total of three pressure ranges are available:
±1,250 Pa, ±2,500 Pa, and ±5,000 Pa. The LHD ULTRA is available in both unidirectional and bidirectional versions.

  • Pin-configurable, digital I2C or SPI output
  • Flat-profile housing for surface mounting
  • Pressure connections for direct manifold assemblies
  • Extremely versatile for adaptation to mounting adapters and manifolds
LHD Ultra data sheet

 

Ultra-robust with long-term stability.

Patented offset chopping technology, immune to dust and moisture.

Ultra-robust with long-term stability.

 

Specific product concept ensures continuous operation that is extremely reliable and economically efficient.

Outstanding long-term stability and precision through the use of our patented real-time offset compensation and linearization techniques.

The LHD ULTRA's high flow impedance ensures product-specific insensitivity to dust/moisture as well as minimal flow leakage.

  • High flow impedance
  • Patented real-time offset compensation and linearization techniques
LHD Ultra data sheet

 

Expert facts about the product:

The problem of measuring across large dynamic ranges.

Experten-Facts zum Produkt

Pressure sensors perform a wide variety of tasks in all kinds of industries – from leak detection to medical technology. Although high-precision low-pressure sensors are available for this, precise measurement of pressures across a wide range has always proved difficult.

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First Sensor is one of the world's leading suppliers in the field of sensor systems. In the growth market of sensor systems, First Sensor develops and produces customer-specific solutions for the ever-increasing number of applications in the industrial, medical, and mobility target markets. Our goal here is to identify, meet and solve the challenges of the future with our innovative sensor solutions early on.
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Our investor relations activities aim at raising the international publicity of First Sensor AG and at consolidating and extending the perception of our share as an attractive growth stock. This means we keep our online communication transparent, comprehensive and continuous in order to enhance your trust in our share.
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In the growth market of sensor systems, First Sensor develops and produces customer-specific sensors, electronics, modules and complex systems for the ever-increasing number of applications in the industrial, medical, and mobility target markets. As a solution provider the company offers complete development services from a first draft and proof of concept up to the development of prototypes and finally serial production. First Sensor offers comprehensive development expertise, state-of-the-art packaging technologies and production capacities in clean rooms from ISO class 8 to 5.
Competencies
In the growth market of sensor systems, First Sensor develops and produces customer-specific sensors, electronics, modules and complex systems for the ever-increasing number of applications in the industrial, medical, and mobility target markets. As a solution provider the company offers complete development services from a first draft and proof of concept up to the development of prototypes and finally serial production. First Sensor offers comprehensive development expertise, state-of-the-art packaging technologies and production capacities in clean rooms from ISO class 8 to 5.
Career
Innovation, excellence, proximity – these are our values, our ambition, our drive. Anything less is not an option. Our sensor solutions stand for technical innovation and economic growth. As such, they form the basis for the development and application of new technologies in almost all areas of life. We aim to shape this future together with you.

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