Tenders Are Invited For Sensor Level Meter

As Part Of The Sub-Project Level Gauges/Flood Protection, The City Of Detmold Wants To Measure The Water Levels On Selected 2Nd And 3Rd Order Bodies Of Water In The Detmold Urban Area And Thus Optimize Flood Monitoring. The City Of Detmold Is Cooperating On An Inter-Municipal Basis In This Project In Order To Be Able To Guarantee The Best Possible Regional Flood Protection. For The Project Described Above, The City Of Detmold Wants To Purchase 25 Water Levels Including An Antenna. The Level Meters Should Have The Following Specifications: Measuring Parameters - Measuring Principle: Ultrasonic-Based Measuring System - Measuring Range: 0.3 - 5 Meters - Resolution: 1 Mm - Ambient Temperature: Resolution 0.1°C, Accuracy +/-0.2°C - Ambient Humidity: Resolution 0.1% Relative Humidity, Accuracy At 25°C Of +/-2% - Accelerometer: Range Of +/- 2.0 G, Sensitivity 16 Mg/Digit, Data Rate 10Hz - Ambient Atmospheric Pressure: Range Of 260 - 1260 Hpa, Accuracy Of +/-1 Hpa Communication Interfaces - Support For Lorawan - Communication Range Up To 10 Km In Rural Areas And Up To 2 Km In Urban Areas (Depending On The Environmental Conditions) Energy Supply - Battery Operation - Low Power Consumption For Long-Term Operation (Energy Efficiency), E.G. Operation Via Long-Lasting Batteries With A Duration Of Up To 10 Years Specifications Level Meter (Hardware) Environmental Protection And Durability - Robust And Weatherproof Housing With A Protection Class Of At Least Ip67 - Operating Temperature Range From -40°C To +60°C - Resistance To Uv Radiation And Corrosive Environments (Outdoor Sensors) Data Logging And - Access - Temporary Storage Of Measurement Data In The Event Of Communication Failures (Internal Memory) - Regular Data Transfer To A Central Database Or Platform - Real-Time Access To Measurement Data Via A Web Interface Or Api Assembly And Installation - Delivery Including All Associated Assembly And Fastening Elements The Level Meters Offered Must Meet The Measurement Parameters And Technical Specifications Mentioned Above. Better Values ​​For The Measurement Parameters Are Permitted As Long As They Do Not Change The Overall Character Of The Level Meter (E.G. Significantly Higher Quality). If The Level Meter Offered Is Not Delivered Including An Antenna, The Associated Antenna Must Also Be Offered And Delivered. Please See The Tender Documents For Further Details.