Monoplace Chamber Ohm Meter Checks (Perry Sigma 34)

NFPA 99 Chapter 20 (20.2.7.4.1.3) states: The resistance between the grounded chamber hull and the electrical ground shall not exceed 1 ohm.
Checking for ground resistance between the hyperbaric chamber and the facility ground is a very important step when it comes to the centers safety program. This procedure is typically performed on a weekly basis (Monday morning before chamber operations begin) and documented on each chambers log (all chamber grounds have to be check individually). The 2nd video also shows the procedure for checking the static cord usually attached to the patient and plugged into the chamber’s ground plug after the patient has been loaded into the chamber.


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