± day DN40 MeitY 3 lps second AMR/AMI 3 years 130 lps Ministry Accuracy data loss web portal ultrasonic 0.5 liters Compliance Electronics 5 lps DN100 Borewell ID 30 lps DN150 secure cloud telemetry data 2 transmissions Telemetry System maximum flow rate Data transmission water flow meters CGWB requirements proper mechanical Metering Technology specific guidelines following parameters operating flow range last calibration date following flow ranges cloud service provider Information Technology ISO 4064:2014 Standards Battery-operated meters technical specifications Digital Water Flow Meter electromagnetic technology Electromagnetic Flow Meter The Central Ground Water Board IP68 ingress protection rating electronic sealing arrangements groundwater extraction monitoring cloud-based Data Management Software Real-time data Cumulative forward flow volume Automatic Meter Reading/Automatic Meter Infrastructure Cumulative reverse flow volume Cumulative net volume Cumulative pump working hours Meter serial number Device