All of the following factors may limit how well the CGI %LEL meter works, EXCEPT:

When using a Combustible Gas Indicator (CGI) to measure the lower explosive limit (LEL) of flammable gases, several factors can impact its performance. High humidity, cold temperatures, and varying concentration levels can all interfere with the accuracy and reliability of the readings provided by the CGI meter.

High humidity can lead to condensation that affects the sensor's response time and can also cause false readings. Cold temperatures can change the gas density and affect how the sensor reacts to the flammable vapors, leading to inaccurate measurements. Concentration levels of the gas being measured can also influence the output of the meter if they fall outside the calibrated operating range of the device.

In contrast, flammable vapors are what the CGI meter is designed to detect, and their presence is essential for the device's function. Therefore, while other environmental conditions may hinder the performance of the CGI meter, the presence of flammable vapors is not a limiting factor; it is, in fact, integral to the operation of the device.