SGP4x Gas Sensors
SGP40 VOC Sensor
The SGP40 is Sensirion’s digital VOC (volatile organic compounds) sensor designed for easy integration into air purifiers or demand-controlled ventilation.
Based on Sensirion’s CMOSens® Technology, the SGP40 offers a complete sensor system on a single chip and features a digital I2C interface, a temperature-controlled micro-hotplate and a humidity-compensated indoor air quality signal. In combination with Sensirion’s powerful VOC Algorithm (part of the SGP40 VOC Index driver package), the sensor signal can be directly used to evaluate indoor air quality, e.g., for triggering the gradual fan control of an air treatment device. Both the SGP40 chip and VOC algorithm feature unrivalled robustness in the final application over their lifetimes. Pushing the multipixel and multi-hotplate approach to the next level of individual control of each sensing element, the SGP40 enables a drastic reduction in power consumption, making it suitable for battery-driven applications as well. Sensirion’s state-of-the-art production process guarantees high reproducibility and reliability.
SGP41 VOC and NOx Sensor
The SGP41 is Sensirion’s new VOC and NOx sensor designed as digital smart switch and regulation unit for air treatment devices such as air purifiers. The two sensor signals processed by Sensirion’s powerful Gas Index Algorithm can be directly used to automatically trigger the removal of indoor air gas pollutants by air treatment devices without the need for user–device interaction. This sensor solution is thus well-suited for constantly monitoring the VOC and NOx situation including potentially harmful events which are not perceived by humans. Furthermore, an automatic control of air treatment devices based on the SGP41 signals helps to save energy by turning them off once the VOC and/or NOx events have been taken care off.
Content Evaluation Kit SEK-SVM4x
- SVM4x Development Board
SGP41 VOC+NOx sensor and SHT40 humidity and temperature sensor
UART and I2C interface via 6-pin Molex Micro-Lock Plus connector
Supply voltage VDD: 3.3 or 5.0 V
Size: 39.0 x 15.0 x 5.5 mm3
- USB-UART cable (6-pin) to connect the SVM4x development board directly to a USB port, e.g. on a PC
- Jumper wire set (6-pin Micro-Lock Plus cable set) to connect the SVM4x development board to embedded platforms like Arduino, Raspberry Pi, etc.
A 10-pin 0.1" pitch-gender changer is also provided.
Red cable = VDD
Black cable = GND
Green cable = SDA (I2C) or RX (UART)
Yellow cable = SCL (I2C) or TX (UART)
Blue cable = SEL (interface select – connect to GND for I2C, connect to VDD or leave open to select UART)
Purple cable = NC (do not connect)
Evaluation Kit Quick Start
Start evaluating your SGP41 VOC+NOx sensor in two simple steps:
1) Either download the SEK-ControlCenter viewer software (available for Windows, Linux and MacOS) or download one of our example drivers for your embedded platform (see links below). A simple step-by-step quick start guide can be found here.
2) Connect the SVM41 development board to your computer/embedded platform with the help of the adapter and start measuring