Function
The flow meter shall be a vortex shedding insertion flow meter. It shall be designed for installation into the inlet tapping of a Cla-Val Automatic Control Valve to provide accurate flow measurement data. The flow meter shall be configured so that it can either be retrofitted into an existing Cla-Val Automatic Control Valve or factory installed in a new Cla-Val Automatic Control?Valve. 

Meter Characteristics
The flow meter configuration shall include a threaded swivel insert with measurement cylinder, fittings and electronics housing fabricated from stainless steel and shall have no moving parts. 
The meter shall be configured so that it can be inserted into valve body inlet tappings as small as 1/2-inch, and then rotated using a tool provided with the unit by the manufacturer. The rotation of the measurement cylinder shall be parallel with the flow direction through the valve. The flow meter shall be capable of being installed in valves from 2 through 16-inch. Installation in larger valves shall also be possible but must be facilitated in conjunction the manufacturer’s technical support team.
Flow shall be measured using the vortex shedding methodology, employing a bluff body within the measurement cylinder that causes vortices to be generated. The vortices shall, in turn, be counted by an internal piezoelectric sensor that communicates with the integral circuit board located in the meter head.  The flow meter shall be IP-68 submersible.
The flow meter shall have been subjected to performance testing by at least one independent laboratory.  The laboratory test results shall illustrate that flow data measured by the flow meter is accurate to within +/- 2% of full scale.
The flow meter’s power requirement shall be 12/24 VDC, 0.7 watts minimum. It shall be capable of connecting with most commercially available data loggers.
 
Installation
The flow meter shall be capable of being installed in either inlet tapping of a Cla-Val main valve body using an insertion tool that is provided with the flow meter. Installation shall be performed in accordance with the manufacturer’s IOM Manual or the Quick Start and Wiring Instructions that shall be shipped with the unit.  
Provisions shall be made for bleeding pressure from the valve prior to installation using main line isolation valves installed on the inlet and outlet sides of the valve.  
A thirty-foot (30) cable shall be provided with the flow meter to complete wiring. Field wiring shall be done in accordance with the manufacturer’s IOM Manual or the Quick Start and Wiring Instructions that shall be shipped with the unit.  

Signal Interface
The flow meter shall be 4-20 mA loop powered and capable of communicating with SCADA, a remote mounted display or other communication devices such as a mobile telephone. The flow data signal shall be converted to 4-20mA, pulse or digital pulse, depending on the application. The flow meter’s Analog Range (4-20mA Scaling) shall be set at the factory prior to shipping.  

Factory Settings and Field Adjustment
Factory settings must be adjustable in the field without removal of the meter or the valve from the pipeline using a cable and downloadable, proprietary software from the manufacturer. 

Maintenance
The flow meter must be removable for inspection, cleaning and maintenance.  The internal sensor and measurement cylinder with integral bluff body shall be replaceable using replacement parts or repairs kit available through the original manufacturer.

Warranty
The flow meter shall be warranted to be free of defects in material and workmanship for a period of one year from date of shipment, provided it is installed and used in accordance with all applicable instructions.  

Summary
The flow meter shall be the Cla-Val X144 e-FlowMeter™ or a product with identical characteristics and capabilities.

Cla-Val Model X144 e-Flow-Meter™
Electronic Flow Meter Purchase Specification





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