Industry best practice (NFPA standards) recommends checking weight and pressure at least every 6 months. A loss of more than 10% in weight or pressure indicates a leak, and the cylinder must be refilled/replaced.
It is recommended that a Pressure Switch device be installed on every FM200 gas cylinder, with the pressure switch cable properly connected to the FM200 Control Panel. If this is done, the FM200 Control Panel monitors for a pressure drop in the FM200 gas cylinder and triggers fault or alarm signal depending on the programmed setting, thereby alerting users of possible gas leak, pressure drop or a discharge.