NIT 01 (23-24) Item 8

SITC of velocity based flow meter with measurement of flow with product of velocity and level on continuous basis. To be mounted on open channel the system should simultaneously read both velocity and level to calculate flow/discharge. The system characteristics:- a. Beam angle b. Standard RS 485 Modbus communication c. Flow velocity and water level output in one. Supply voltage: 12 VDC, Static Current ≤1 mA (@ 12 V), Operating Current ≤ 100 mA (@12 V), Water level range: 15m (range optional 30m /45m ) Water level Accuracy ± 3 mm, Water Level Resolution: 1 mm Water Level Radar Frequency: 26 GHz Water Level Radar Antenna Type: Planar microstrip array antenna Water level Radar beam angle: 10° Flow velocity measurement range: 0.05 - 21m/s Flow velocity accuracy: 8.8 mm/s Flow Velocity Resolution: 1 mm/s Flow velocity Radar Transmission Frequency: 24 GHz Flow Velocity radar beam angle: 12° × 12° Water Surface distance: 0.5 – 35 m Operating Temperature :- -35 to 60° C Storage Temperature :- -40 to 60° C Working Humidity ≤ 95% Application Occasions: static water or moving water Acquisition Interval: 5s to 24 hours can be set Digital Interface: RS 485 MODBUS communication protocol Wiring port: M 20* 1.5×2 Make: Any DJB approved make

SITC of RTU, with wiring and accessories, having processor designed for the monitoring of existing flow meters, capable of communicating through internet cloud computing hosted at secured data centre and accessible over simple internet browser for the required parameters monitoring. RTU should be with Vandal resistant high gain antenna and mounting arrangement as per the site requirement, including Sim Card/Sim Card monthly rental charges for the guarantee period. Make: Any DJB approved make

Providing and laying in position cement Concrete of 1:2:4 grade excluding the cost of centering and shuttering -All work up to plinth level 1:2:4 (1 cement : 2 coarse sand (zone-lll) derived from natural sources: 4 graded stone aggregate 20 mm nominal size derived from natural sources) DSR21(4.1.3)

Earth work in manual excavation by mechanical means (Hydraulic excavator) / means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m. All kinds of soil. DSR21(2.8.1)

Reinforcement of (100Kg/m³) 356.8 Kg of cement concrete work As per DJB circular rate

Cement Plaster (in fine sand) of 12 mm cement plaster of mix 1:6 (1 cement: 6 fine sand) DSR21(13.1.2)

Close timbering in trenches including strutting, shoring and packing cavities (wherever required) complete. (Measurements to be taken of the face area timbered) Depth exceeding 1.5 m but not exceeding 3m DSR21(2.16.2)

Providing and laying in position cement Concrete of 1:4:8 grade excluding the cost of centering and shuttering -All work up to plinth level 1:4:8 (1 Cement: 4 coarse sand (zone-III) derived from natural sources : 8 graded stone aggregate 40 mm nominal size derived from natural sources) DSR21(4.1.8)

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