How often should calibration of the CGI be checked?

The calibration of a combustible gas indicator (CGI) should be checked "as needed" to ensure accurate readings and reliable performance. Regular calibration is essential for the safety and functionality of the gas detection equipment, but the frequency depends on various factors, including the manufacturer's recommendations, the specific environment in which the CGI is used, and the conditions that could affect its performance.

For instance, if the CGI is used in a high-risk area where gas leaks could occur frequently, more frequent checks may be warranted. Conversely, in environments where the CGI is less likely to encounter gas, the need for calibration checks may be less. The choice of "as needed" reflects a flexible approach to calibration that prioritizes safety and adaptability over a rigid schedule. This ensures that personnel maintain the instrument's accuracy without imposing unnecessary frequency that could lead to complacency.