GE(U)/CHM-28/2020-21 - PROVN OF DIGITAL FLOW METER AT MAIN INCOMING RAW WATER SUPPLY TO CHANDIMANDIR MIL STN

Amount

Supply, installation, testing and commissioning of electromagnetic type flow meter for raw water supply pipeline with Following Specifications :- Electromagnetic Flow Sensor (a) Type: Pulsed DC (b) Meter SIze: 500mm (c) Flow tube: SS 304 (d) Coil Housing : Fully welded sheet steel, PU Coated (e) Liner: Hard rubber (f) Electrodes: SS 316 (g) Grounding type: Rings (h) Grounding material: SS 316 (j) Process connection: Flanged to PN 10 (k) Flanges: CS (I) Cable entry: M20 X 1.5 (m) Protection Class: IP 68. Signal Convertor (a) Mounting: Remote type. (b) Type: Microprocessor based (c) Output: 4-20 mA, HART + Pulse/frequency, Status (d) Accuracy: +-0.5% of measured value (e) Max Load: 500 Ohms. (f) Display: Large back lit LCD display (g) Parameters: Actual flow rate, totalized flow (8 digits), flow direction, flow velocity (h) Local indication : programmable (j) Power supply 85-250VAC, 48-63 Hz/24 V DC (k) Housing: Die cast Aluminium with polyster top coat (I) Cable entry: M20X 1.5 (m) Protection class: IP 67. Notes: 1. The quoted rate shall be deemed to be inclusive of required electrical cables, signal cables, civil work i.e. excavation and returning filling for installation of the meter, cutting of MS pipe 600 mm, MS reducers, MS flanges, rubber sheet, welding and any other work required for successful commissioning of flowmeter . 2. The signal converter unit/flow measurement unit shall be fixed at a suitable place in CRCA sheet enclosure with grouted angle iron legs.

Contd Srl item No 1... 3. The contractor shall submit technical data sheet of the make for approval of GE before incorporation in the work. 4. Full bore electromagnetic flow meters should be designed, manufactured and Calibrated according to ISO standard and shall withstand maximum working Temperature of about 600oC and working pressure of 10kg/cm2. The flow meter shall be capable of measuring bi-directional flow. 5. The meter shall be manufactured to highest standard available for mag-meters. The meter shall be equipped with minimum six digit digital totalizers, reading in Units of kilolitres and shall be accurate within 0.5% of true flow. 6. The meter assembly shall operate within a range of 0.5 m/sec to 5 m/sec and Be constructed as follows: (a) Meter Tube (Sensor) (b) Coil Housing (c) Signal Converter 7. The converter shall indicate direction of flow and provide a flow rate indication And a total of flow volume for both forward and revere directions.The converter shall provide an isolated 4-20 mA output into minimum 600-ohm load and a Frequency output of a maximum of 0-10 KHZ and a scaled pulse output.

Contd Srl item No 1... 8. The microprocessor based signal converter shall have a self-diagnostic test Mode and a backlit display that continuously displays ‘Rate of flow’ and 'Total Volume'. The converter shall be compatible with Microsoft Windows and other Software programs with built in terminal communication capabilities of RS 485, HART or other protocols for interface. The converter shall be remotely mounted Maximum up to 200 m from the sensor and shall be supplied with all Calibration complete for desired requirements. 9. Converter shall be supplied with a programmable low flow drop out and empty Pipe zero return. The signal converter housing should be die-cast aluminium with glass window. 10. The converter cum transmitter should be fully programmable from the front Facia. 11. Volumetric Testing of all meters must be perform and approved prior to Shipment. The complete meter assembly and signal converter must be wet Accuracy tested and calibrated as a unit near minimum, intermediate and Maximum specified flow ranges of the meter (full range of flow). 12. The overall uncertainty of the calibration rig should be at least three times better than the uncertainty of the full bore electromagnetic flow meter. 13. The competent Government authority such as FCRI/NABL must certify the test Facility. All the meters shall be calibrated for a minimum of 3 point.

Contd Srl item No 1... 14. The manufacturer should have an ISO 9001, 14001 & BS 18001 certification. The magnetic flow meter should perform within the required accuracy of Measured value without being affected by change in pressure due to demand Fluctuation. 15. Supplier should have in-house calibration facility and should give calibration Certificate for all the flow meters. The flow meter should have grounding rings Only. Calibration of each Meter shall be tested at in house facility of Manufacturer for which manufacturer has this facility. The test Bench of such manufacturer should be certified by a reputed government Organization like FCRI or NABL. 16. If manufacturer has no in house facility for calibration then each meter shall be Tested from FCRI/NABL Accredited Lab. 17. Supplier must have test facilities, spare parts, and personnel to maintain, Instruct, train or whatever is necessary to assure that meters shall be maintained throughout the guarantee/maintenance/defect liability of contract period.

Supply, install, testing and commissioning of GPRS based data logger for transmitting the flowrate on a real time basis, including SSL certified and secured data logging software with lifetime membership/free of cost charges for servers including login ID and password OR provision of real time flow data in AGE E/M office on LED screen complete all as specified and directed. Note: 1. Contractor shall make 2 year recharge in GPRS SIM for data after the date of completion.

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