Measure water from hydrants or non-permanent set-ups. Choose from two models: 125-W and 1125-W for measuring flows to 1125 GPM (4250 litres per minute). Both have convenient carrying handles, locking hasp lids and are available with a number of options.
The Model 1125-W Fire Hydrant Meter is based on the turbine principle of measurement; its operating range is from 10 to 1125 gallons per minute (2.3 to 255 m3/h) with registration accuracy of 100% ±1.5% of actual throughput. The model 125-W Fire Hydrant Meter operating range is from 10 to 350 gallons per minute (2.3 to 70 m3/h) with registration accuracy of 100% ± 1.5% of actual throughput.
The meter is intended for measuring water from a fire hydrant or other non-permanent installations.The meter comes equipped with standard fire hose swivel couplings and a register lid locking hasp as standard equipment.
The meter consists of two basic assemblies— the lightweight aluminum maincase and the measuring chamber. Straightening vanes in the maincase minimize the swirl upstream of the meter so as to direct the flow evenly to the rotor.The measuring chamber assembly includes the rotor, a calibration vane which eliminates the need for calibration change gears, and a permanently, hermetically sealed, Direct Reading (DR) register.
The Right Angle Magnetic Drive eliminates conventional worm or miter gears normally required for horizontally mounted rotors or turbine measuring elements. Registration is accomplished by combining the magnetic actions of a driver magnet (embedded in the rear face of the rotor), a three-legged flux carrier and a cylindrical follower magnet attached to the gear train shaft inside the register’s magnet well. Water flowing through the meter causes the rotor (with magnet) to turn; as one of the magnet poles passes one of the flux carrier legs, the magnetic force is transmitted through the flux carrier leg to the follower magnet, causing the register shaft to rotate.The only moving part in water is the rotor assembly.
The thermoplastic rotor with a graphite bearing rotates on a chrome plated stainless steel shaft.The rotor assembly is virtually weightless in water, thus adding to bearing life.
Because the meter is accuracy and pressure tested prior to shipment, no field adjustments are required. For proper accuracy, the meter must have an input of a full flow of liquid.
If necessary, the measuring chamber can be removed from the maincase for maintenance without having to remove the maincase from the installation. Either a spare measuring chamber or a cover plate can be used if water service must be maintained.