Packages for Mobile and Fixed-Base Monitoring of Air Pollutants

2B Tech offers a number of packages for both mobile and fixed-base monitoring that make use of various combinations of sensors and miniaturized instruments. These packages all include IoT (internet of things) data transfer to the cloud via a cellular connection and data logging on micoSD flash memory cards.  

Sensors vs. Instruments

​​The term “sensor” is commonly used to refer to any measurement device that produces an electrical signal related to a chemical concentration, i.e., a transducer.  However, in the air monitoring community, sensors have come to refer to small, inexpensive devices based on a variety of sensing technologies (electrochemical, resistance change in a semiconductor, light scattering from particles, etc.).  Sensors are distinguished from traditional “instruments” which are much larger, more expensive, require much more power to operate, but are based on measurement principles that are much more specific to individual chemical species and less susceptible to baseline and sensitivity drift.  The approach of 2B Technologies over the past two decades has been to miniaturize instruments, i.e., reduce the size, weight and power requirements while retaining the advantages of high precision and accuracy.  We see miniaturized instruments as an important means of validating and calibrating sensors in the real atmospheric environment.  We offer sensor solutions as devices become available that measure air pollutants with adequate sensitivity, reproducibly and with minimal inferences.  Currently available sensors for species such as O3, NO, and NO2 marketed by other companies suffer from long-term drift, temperature and humidity sensitivity and cross interferences.  For those species, we have developed highly accurate and precise miniaturized instruments.  See our discussion describing sensors, their advantages and disadvantages here:  Sensors vs. Instruments