1. Pressure gauges are never connected directly to the live steam line; rather a loop or syphon is interposed as close as possible to the pressure gauge. This is done to
(A): avoid the overheating of the tubes & bellows which operate them to minimise error and damage. (B): avoid the overheating of the tubes & bellows which operate them to minimise error and damage. (C): avoid the static head error introduced by steam entry. (D): both avoid the overheating of the tubes & bellows which operate them to minimise error and damage and form a seal of water by steam condensate to fill the tube or bellows at the pressure being measured. (E): form a seal of water by steam condensate to fill the tube or bellows at the pressure being measured.
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