CWD 100 Prepaid water meter are extremely rugged and can be used with pulse output flow sensors. The instrument calculates the total flow and constantly checks for the remaining volume that can be transferred. Once the preset volume is transferred the instrument activates a motorized valve shutting OFF the line. The volume of water to be transferred can be loaded by means of a prepaid card. Once the card is inserted and removed the balance remaining in the card is transferred to the instrument and the balance in the card reduced to zero. Once charged the motorized valve is held open until the balance is exhausted

The volume of water that the customer has charged and all other parameters are stored in non-volatile memory that is protected from external access. This means that user cannot tamper with this data by any means.

Optionally these instruments have a RS485 communication port with MODBUS protocol implemented.