Anesthesia flow sensor
Unlock precise gas mixing at minimal flows with ultra-accurate anesthesia low flow sensors
Low flow anesthesia is a technique that is being increasingly adopted in practice thanks to its numerous advantages. Using this method, the patient is supplied with a reduced flow of fresh gas (oxygen mixed with air or nitrous oxide N2O), while the exhaled gases are recycled and reused.
By minimizing the amount of gas consumed and wasted, low flow anesthesia sensors offer numerous benefits such as cost savings, environmental impact reduction, stable anesthetic levels for safety and temperature/humidity preservation. It also minimizes exposure to volatile agents, enhancing patient care, cost-effectiveness and environmental sustainability.
In low flow anesthesia (also known as minimal flow anesthesia), the fresh gas flow rate is as low as 200–300ml/min and must have an oxygen concentration accuracy within 5% by volume. Achieving this gas mixing accuracy requires exceptional flow sensor performance, especially around zero, as minor offset or non-linearity errors are significant at these low flow rates.
The SFM4300 flow sensor has been optimized to specifically fulfill these stringent accuracy and performance requirements.
How our anesthesia flow sensor solutions make a difference
Outstanding accuracy and performance at the lowest flows
The SFM4300 sensor accuracy has been developed specifically for the most demanding gas mixing applications like low flow anesthesia.
Reliable technology ensures gas mixing accuracy over lifetime
Our CMOSens technology is extremely reliable and stable over time, ensuring anesthesia performance over its lifetime without any need for recalibration.
Simple integration optimized for anesthesia
The SFM4300 sensor is fully calibrated and temperature-compensated for all three gases utilized in anesthesia gas mixing: air, oxygen and nitrous oxide (N2O). It can accurately measure individual gases or mixtures with precision.
SFM4300 sensor for anesthesia gas mixing
With an offset error of less than 7ml / min, the low flow sensor enables accurate gas mixing for mixed flows of a few 100 ml/min while ensuring accuracy over its lifetime.
Explore the SFM4300
SFC6000 mass flow controller for gas delivery
The SFC6000 seamlessly combines the SFM4300 flow sensor with a proportional valve, providing customers with a compact and cost-effective solution for integrated flow delivery.
Explore the SFC6000Discover related sensors
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Want more detailed information?
Download our brochure for a crisp overview of our gas flow meters.
- Free Download
- 10/2025
- 497.6 KB
Want more detailed information?
Download our brochure for a crisp overview of our gas flow meters.
Free Download- 10/2025
- 497.6 KB
Why Sensirion should be part of your solution
Trusted and proven
The strong reputation we have built over the past two decades in automotive, medical and industrial applications is founded on our reliable flow sensor portfolio, which is well-known for its outstanding performance.
Expertise and knowhow
Benefit from our extensive expertise and knowledge in medical applications such as anesthesia to address your challenges effectively.
Reliable partner
Repeatedly proven to be a reliable and dependable partner for our customers, always there when it's most needed.
