Supply, installation, testing and commissioning of 600 mm dia. electromagnetic water flow meters and signal converters along with allied accessories on 600 mm dia. Sitlee- Manda rising main under State Capex Budget

Amount

Providing/ Supply, installation, testing and commissioning of 600 mm dia. electromagnetic water flow meter/ sensor for pure water along with allied accessories such as signal converter, cables, grounding rings etc. conforming to relevant BIS or IS standard on 600 mm dia. Sitlee- Manda rising main. The electromagnetic flow meter and signal converter should have following design parameters /specifications: For electromagnetic flow sensor (full bore), Size 600 mm dia. Sensor type Pulsed DC Flow Tube SS 304 Liner Hard rubber or PTFE suitable for drinking water Electrical power 85-250 VAC Grounding Electrodes SS 316 Grounding rings SS 316 Process connection Flanged Ingress protection class IP 68 Flanges Carbon steel, SORF Flow Range 0-1400 m3/hr Empty Pipe Detection Required Coil Housing and Junction Box SS304 / Carbon Steel with anticorrosive epoxy coating as per IS standard For signal converter Type Microprocessor programmable based separate version Display LCD/LED Accuracy ±0.3 % of measured value for velocity of 0.5 m/sec and above Parameters Actual flow rate, totalized flow, flow velocity, mass flow rate Protection class IP 66/67 Cable length 30 mtrs approx. Housing material Die cast aluminium or better Mounting Wall mounted Calibration Wet calibrated at facility acceredited by NABL as per IS standard using water as medium. Calibration certificate must be supplied alongwith flowmeter. Make Krohne Marshall/Siemens/Yokogawa/ ABB/Endress+Hauser/ or equivalent make of IS or BIS standards. The job includes carriage of material like oxyacetylene gas cylinder, gas cutter, welding set, welding leads, welding electrodes and other allied material from workshop to site of work i.e at Manda reservoirs using mechanical transport and manual labour to actual site of work. Loading the electromagnetic flow meter along with complete accessories in mechanical transport using crane and then unloading and stacking at Sitlee by crane. Carriage of water flow meter in mechanical transport to nearby work site i.e near Manda reservoirs, unloading it by crane and upto actual site of work by manual labour. Fabrication of 02 nos. MS flanges out of MS plate 20 mm thick, turning, facing and drilling of holes as per the size of flow meter, fitting and fixing the same with M.S pipe by electric arc welding as per relevant IS specification using standard electrodes. Holding the pipe by using tools and tackles and crane so that pipe remain in its aligned position while cutting. Cutting of the 600 mm dia. MS pipe with the help of gas cutter by using oxyacetylene gas in order to install the electromagnetic water flow meter. Fitting of the electromagnetic water flow meter/ sensor by holding it with the crane and properly aligning it with the pipe and providing/ fitting the rubber gasket, nuts and bolts for fitting the flow meter horizontally in line. Tighten all the nuts and bolts to maximum torque so that there should be no leakage. The job further includes fitting of the wall mounted microprocessor based programmable signal converter having LCD graphic display, protection class IP 66/67 of already specified make on the wall that display the readings of water flow with accuracy. Fitting the wall bracket on the wall and then mount the signal converter. Signal converter should be calibrated with the settings of flow meter so that readings transmitted by electromagnetic flow meter/ sensor can be displayed on signal converter with accuracy having ± 0.3% of the measured value. Laying the cable which is with the water flow meter from meter to the signal converter. Providing/ laying the 32mm dia. G.I pipes (approx 30 mtrs) and conduit pipe for protecting the cables from any wear and tear. Providing and fitting of copper cables 2 core 1.5 sq mm (approx 02 mtrs) so that power supply can be provided to the signal converter and electromagnetic flow meter. Making of all the electrical connections of water flow meter, signal converter, and testing the electromagnetic water flow meter and signal converter on no load by providing the main power supply and on full load by running the motors so that readings can be taken from flow meter and can be displayed on signal converter. Complete job includes cost of material, crane charges, labour charges, transportation charges, etc.

ROYAL ENGINEERS AND CONTRACTORS

VK Mechanical Works