MODEL MCT II COMPOUND MAGNETIC DRIVE METER

APPLICATIONS: The Hersey Meters MCT II Compound Magnetic Drive Meter is designed for applications where a high degree of accuracy is required over a wide range of water flow rates. Hotels, motels, institutions, schools, factories, office buildings, apartment building and commercial properties are examples of installations where domestic or process water services may have widely varying flow rates.

CONFORMANCE TO STANDARDS: Hersey MCT II Compound Water Meters comply with ANSI/AWWA Standard C702. Each meter is tested to ensure compliance.

CONSTRUCTION: Hersey Model MCT II Water Meters consist of a positive displacement measuring chamber, a turbine type measuring chamber and an automatic control valve. A nutating disc style positive displacement chamber was selected for it's low flow sensitivity to accurately measure the lower flows. A rugged torent-style turbine measuring element was selected to measure the higher flows giving the compound meter assembly a wide operating range with excellent low flow sensitivity and durability. Internal strainers protect both measuring elements and the torent chamber is not sensitive to turbulence, eliminating any need for an external strainer in front of the meter. Separate registers are provided for each measuring chamber. The automatic valve is a weight and lever that opens automatically to control the point at which the mainline meter registers.
The meter is constructed so that all components are accessible without removing the meter from the line.

REGISTERS: Permanently sealed registers use proven magnetic drive design and the exclusive Hersey triple seal to provide clarity and error free meter reading. Internal gears in all assemblies are self-lubricating, molded plastic for long life and minimum friction. The standard dual registers include a straight reading, odometer- type, totalization display, a 360 degree test circle with center sweep hand, and a low flow indicator. The Calibrator Gear Train permits accuracy calibration. All Hersey models are available with electronic meter reading systems for increased meter reading efficiency. ( See Automatic Meter Reading Equipment )

OPERATION: During flow rates all water flows through the bypass section and is registered by a sensitive positive displacement nutating disc meter. When pressure loss through the bypass section approaches 4 psi, the mainline lever valve automatically opens and the mainline meter begins to register the higher flows. The bypass meter continues to register flow through the bypass section at a rate well below its maximum capacity. When flow rate decreases sufficiently, the lever valve closes and lower flows are again registered by the bypass meter alone. The registers' combined readings indicate total usage.

MAINTENANCE: The Hersey MCT II Meters are designed and manufactured to provide long service life.

CONNECTIONS: Available with integral two-bolt oval flanges on 2" size, ANSI class 150 flanges on 3" through 6" sizes (class 125 cast iron or class 150 bronze companion flanges available on request). ANSI class 125 cast iron flange on 8" size.

Model Designation
MCT II (2"-8")

Sizes
2", 3", 4", 6" and 8"

Standards
Manufactured and tested to meet or exceed all applicable parts of ANSI / AWWA C702 Standard

Service
Cold water measurement with flow in one direction

Operating Flow Range
See Catalog PDF below

Accuracy
See Catalog PDF below

Maximum Pressure Loss
See Catalog PDF below

Maximum Working Pressure
150 PSI

Temperature Range
33F to 100F water temperature

Measuring Elements
Torrent Wheel and Nutating Disc

Register Type
Permanently sealed, straight reading, magnetic drive with low flow indicator. Remote reading units optional.

Strainers
Internal strainers protect both measuring elements eliminating the need for an external strainer.

Meter Connections
2" size available with two bolt flanged ends 3" thru 6" ANSI class 150 flanges, 8" ANSI class 125.

Materials
Maincase - (2"-6") bronze UNSC84400, (8") cast iron; Magnets - Ceramic; Strainer - thermoplastic; Casting bolts - steel ANSI B18; By-pass chamber - (2"-4") three piece thermoplastic, (6" & 8") bronze UNSC84400; Mainline torrent - (2"-3") thermoplastic, (4"-8") bronze UNSC84400.

Options
AMR Reading Systems, Trim Valves

*8" size is different from 2"-6" sizes in that it is cast iron with two-piece body and external bypass.


Toomey Water Services 2007 created and maintained by jra design