High CO2 concentrations in the range of 5% to 10% are common in various scenarios. For example, industrial processes such as fermentation and chemical production often generate elevated levels of CO2. In addition, certain agricultural practices, such as the controlled atmosphere storage of fruit and vegetables, can lead to elevated CO2 concentrations. In confined spaces with limited ventilation, CO2 can build up to levels higher than can be measured by standard range CO2 analysers. Carbon dioxide concentrations above 1000-2000 ppm are known to cause headaches, fatigue, poor concentration, increased heart rate, etc. in humans. In addition, certain research requires (very) high CO2 levels for studies related to plant growth, mammal respiratory or ecosystem functioning. We are therefore pleased to offer two solutions for the reliable measurement of high CO2 concentrations:
Q-S158 CO2 Analyser 10%. The single channel non-dispersive infrared instrument, is designed to measure CO2 in the range 0-10% with exceptional accuracy, better than 0.01%. Customisable high CO2 ranges are also available - get in contact. Notably, the Q-S158 has a built-in sensor temperature control system to ensure signal stability, particularly in harsh field conditions. This analyser is well suited for CO2 exchange measurements in larger or dynamic animals and any scenarios where elevated CO2 concentrations and fluxes are expected, such as industrial processes or insufficiently vented indoor facilities. The Q-S158 is available as a stand-alone CO2 analyser with
All versions of the Q-S158 feature temperature control of the rugged carrying case, making it ideal for field use. It can be used in a flow-through gas exchange setup for real-time and continuous monitoring of CO2 exchange. Alternatively, the injection mode allows CO2 levels to be determined in previously collected gas samples using a septum. For data acquisition, the Q-S158 CO2 analyser can be seamlessly integrated with the Q-C901 Logger Pro software or other systems. Compatible with the CO2 control system for controlling pCO2 in growth cabinets, and the Q-DCO2 system for measuring dissolved CO2 levels in liquids.
See below for Q-S158 Specifications and References
Q-S153 CO2 Analyser. The Q-S153 is a single channel NDIR CO2 analyser designed to measure CO2 in the 0-5% and the 0-10% ranges (switchable) with a resolution of 0.01%. It features enhanced, robust and modular technology tailored for seamless integration into the Q-Box package RP2LP High Range Respiration and stand-alone applications. It can be used in a flow-through gas exchange configuration for instantaneous and continuous measurements of CO2 exchange, or as a component of Gas Control Systems in growth cabinets and rooms.
|Specifications||Q-S158 / Q-S153||OPEN|
Operating principle: Non-dispersive infrared
Operating Temperature Range: 0 to 50°C; Storage: -40 to 70°C
Temperature controller max.: 50°C
Operating pressure range: ±1.5% of local mean pressure
Weight: 1 kg (Q-S153), 4.7 kg (Q-S158)
|References||High CO2 Analyzers||OPEN|
Monitoring CO2 levels in indoor environments provides a prompt indication of the requirement for increased ventilation. CO2 is regarded as an indoor pollutant, whereby elevated levels can negatively impact the productivity, performance, and general health of employees and students. Excessive CO2 exposure can lead to adverse effects, particularly in enclosed spaces, in various work environments such as restaurants, breweries, beverage industries, agricultural facilities, and laboratories. Indoor carbon dioxide measurement enables control over the well-being and safety of residences, educational institutions and workplaces.
What level of CO2 is unhealthy? The American Conference of Governmental Industrial Hygienists (ACGIH) recommends an 8-hour time-weighted average (TWA) exposure limit (TLV) of 5,000 ppm, with a maximum exposure limit (not to be exceeded) of 30,000 ppm for 10 minutes. A concentration of 40,000 ppm is considered to pose an immediate danger to life and health (IDLH). However, the permissible level of carbon dioxide (CO2) indoors may differ according to several factors, including the function of the space, number of occupants, and ventilation systems.
In most indoor environments, a CO2 concentration of 400-1000 ppm is considered acceptable. This range is commonly used as a guideline for maintaining good indoor air quality in homes, offices and public spaces. Higher levels of CO2 have been shown to lead to reduced cognitive performance and lower productivity. Different countries and regions have specific building codes and standards that dictate acceptable indoor CO2 levels. It's thus important to check local regulations for compliance.