An existing mechanical meter was integrated into the WaMSS by connecting an Isoil GPRS logger. Every morning the Water Manager observed the normal day/night flow pattern. Things ran smoothly until one Wednesday morning when he saw the flow rate collapse to zero and stay there. Line pressure continued its normal trend. He suspected a catastrophic failure of the mechanical meter. On-site inspection revealed damage to the rotor and grit lodged in the internals which caused the turbine to lock up.
Without the WaMSS, on a normal monthly measurement cycle it would have taken 3 to 6 weeks for the zero readings to be identified. During this time the flow would be unbilled, leading to a loss of revenue and inaccurate water balance. WaMSS saved the day - and made sure all the water was metered and billed!