Digital Water Level Recorder (DWLR) Piezometer
Under CGWA statutory regulations, industrial borewells and observation piezometer wells require automated Digital Water Level Recorders (DWLR) that continuously monitor depth to water table. The KBN Piezometer System utilizes a piezoresistive ceramic diaphragm housed within a 316L stainless steel snubber assembly.
The transducer connects via high-tensile vented polyurethane cable to an above-ground solar/battery-powered telemetry unit. Data is logged every hour and pushed directly to Central Ground Water Authority cloud servers via quad-band 4G/GPRS.
Technical Specifications & Parameters
| Parameter | Technical Specification Value |
|---|---|
| Measurement Resolution | ±1 mm (0.001 m) water column depth |
| Standard Sensor Depth Ranges | 0 - 50m, 0 - 100m, 0 - 200m, 0 - 300m (Custom depths up to 1200 FT) |
| Transducer Sensing Element | High precision piezoresistive ceramic pressure diaphragm with laser-trimmed circuit |
| Wetted Body Construction | 17-4PH or 316L Stainless Steel with heavy 316L snubber cage for silt protection |
| Barometric Compensation | Atmospheric vented snubber capillary tube inside cable (true gauge reference) |
| Operating Current Consumption | Ultra-low 5mA active measurement current (Sleep mode < 50µA) |
| Vibration Resistance | ±20g compliant with MIL-STD-810C standards |
| Dielectric Withstand Strength | 2mA @ 500 VAC, 1 minute breakdown rating |
| Local Display Interface | 16x2 character alphanumeric backlit LCD showing depth (m), battery voltage & GPRS signal |
| Cloud Telemetry Modem | Quad-band 4G/2G GPRS IoT transmitter with automated server push to CGWA API |
| Ingress Protection Rating | Submersible Sensor: IP68 (continuous immersion) | Telemetry Enclosure: IP65 Polycarbonate |
| Power Supply Options | Internal rechargeable Li-ion battery + 20W Solar Panel / 230V AC adapter |
True Barometric Compensation
Integrated vent capillary prevents atmospheric pressure fluctuations from introducing errors in groundwater level readings.
Solar-Powered Autonomy
Equipped with a compact 20W solar module and smart battery management for uninterrupted operation in remote borewells.
Turnkey CGWA NOC Approval
Pre-configured telemetry and testing certificates accepted by CGWA regional directorates across all Indian states.
Need a Piezometer DWLR System for Groundwater NOC?
Tell us your total borewell depth and static water level. Our team supplies complete kits with sensor cable, telemetry unit, solar panel, and installation mounting clamp.