What does Retrotec recommend for the frequency of calibration checks on their manometers?

Retrotec recommends weekly checks or checks as needed for their manometers to ensure accurate readings and consistent performance. Regular calibration checks are crucial in maintaining the reliability of the equipment used in whole-building airtightness testing. Weekly checks allow for timely identification of any discrepancies or issues that may affect the measurement accuracy, ultimately leading to more reliable test results. This frequency strikes a balance between ensuring precision in readings and practical usability for testing processes, making it a standard practice in maintaining manometer integrity.

Other options may suggest less frequent checks, which could lead to potential errors in measurements, or more frequent checks that might not be necessary for consistent performance, highlighting the reason why weekly checks are deemed the appropriate recommendation.