CO2 sensors are getting smaller. Changes in optical path design and improvements in infrared LED light sources have enabled a new generation of small footprint CO2 sensors that combine low power requirements with good speed and accuracy for wireless IoT (Internet of Things) applications that use battery or solar power.
SenseAir AB of Delsbo, Sweden has always stayed current in trends in the industry and the Senseair Sunrise 1% CO2 Sensor is ahead of its time. The sensor uses a next-generation, low-power infrared LED that only requires 3V power, with peak current less than 125mA during a reading. It is also designed for both indoor and outdoor air quality measurements from 400 to 10,000ppm CO2.
The SE-11 optical path design and coating are an evolution of many years, not just of R&D but customer application experience. SenseAir's patented Platinum Eternal Quality Coating improves on gold as the standard for reflection and durability.
This sensor is 34x20x12mm, or about 2/3 the size of a 9v battery. Because it is solid-state, it uses no moving parts. Combined with its expected > 15-year life expectancy, the Senseair Sunrise sensor can be used in a high vibration environment like a hand-held meter or even utilized inside a moving vehicle.
How Good is the SE-11 CO2 Sensor?
So how good is the Senseair Sunrise SE-11 CO2 Sensor?
Let's look at SenseAir's K-30 CO2 sensor, arguably the world standard for high-production CO2 sensors. Our team at CO2Meter decided to create a test, using the latest version of our free GasLab® software, which includes full support for the Sunrise sensor.
From the graph, you can instantly see that the Senseair Sunrise SE-11's performance is right on par with the K-30. When combined with the same 15-year lifespan, smaller size, and lower power requirements, we determined confidence that the SE-11 Sunrise will become the next generation standard for OEM CO2 sensing technology.
To provide some background, the Senseair Sunrise SE-11 sensor was designed in collaboration with Asahi Kasei Microdevices (AKM), the parent company of SenseAir AB. The AKM Group is a global manufacturer of sensors, semiconductors, and IC products for the consumer market and is a Tier 1 automotive supplier for products including radar, car audio, remote key-less entry, compasses, accelerometers, and power control circuits.
Using AKM’s experience with LEDs, photodiodes and signal processing allowed SenseAir to bring the Senseair Sunrise to market with a proven IR-LED element and control circuit. At the same time, AKM’s experience with high-volume automated production allows the Sunrise sensor to be produced in large numbers with high quality.
You can purchase the Senseair Sunrise CO2 sensor today. for easy integration into a variety of applications and industries.
Our CM-11 Development Kit (SDK) also is available and connects the sensor directly to a Windows PC using our GasLab® software and a standard USB cable. The CM-11 lets you communicate, configure and exercise the sensor.
You can see the background stream of communication output for reference. No FTDI cable is required. In addition, the CM-11 SDK AUX connector provides I2C and direct UART communication as well as other signals and power inputs.