Testo 558s Setup Guide: Superheat, Subcooling and Common Errors
The testo 558s measures refrigeration-system pressure and, with the required temperature sensors and correct refrigerant selection, supports superheat.
Why Condensation Forms on One Wall but Not Another: Dew Point and Surface Temperature
One wall can condense moisture while another stays dry because its surface temperature falls below the dew point of adjacent indoor air. Thermal.
Why Does Compressed Air Consumption Stay High During Production Stops? Causes and Checks
High compressed-air use during downtime generally means air is still flowing somewhere: leakage, purge cycles, drains, blow-off nozzles or standby.
Why Do Two Hygrometers Show Different Readings? Causes and Checks
Two hygrometers can show different relative-humidity values because of sensor tolerance, temperature, placement, stabilization time or drift. Place.
How to Measure pH in Canned Food Safely: Sampling, Calibration, and the 4.6 Limit
A pH reading can help evaluate a food sample, but it cannot by itself establish that a home-canning recipe or commercial sterilization process is safe..
HVAC Flow Hood Measurements: Setup, Errors and Best Practices : Check the hood seal before trusting
Use a flow hood to measure volumetric airflow at a supply or return outlet, then compare the reading with the system’s design and balancing data. A.