Ultrasonic Water Meter(Bulk Water Meters) is an innovative flow meter with a static flow sensor based on the ultrasonic measuring principle. Ultrasonic Water Meter utilizes ultrasonic measuring methodology and microprocessor technology. All calculation and flow measuring circuits are designed on one single board, thus offering exceptional accuracy and reliabilityhttp://www.shmeter.com/ultrasonic-water-meter/ultrasonic-bulk-water-meter/

Counters are the crucial hard ware components, and are defined as “The digital circuit which is used to count the number of pulses”. Counters are well known to us as “Timers”. Counter circuits are the best example for the flip flop applications. Counters are designed by grouping of flip flops and applying a single clock signal to them. In simple words, the counters are those, which have the group of storage elements like flip flops to hold the count.http://www.rreowtech.com/counter/