Like its analog counter part the new LEV2 level sensor is fully digitally compensated and built for Adcon in Switzerland. In addition to the pressure reading it also outputs the temperature of the water table. A pressure relief box with a silica pack inside is fitted to the end of the reference tube, which is embedded into the cable, to prevent condensation from blocking barometric pressure compensation.
The probes are extremely accurate and provide excellent long term stability. Power is provided by the RTU’s internal battery pack.
Three different pressure cells are available, 1, 3 and 10bar, corresponding to approx. 10, 30 and 100m of water column.
Level Sensor: Pressure transmitter piezo resistive Measuring Ranges 1, 3, 10 bar Overpressure 3, 7, 20 bar Type of reading relative, compensated against barometric pressure Operating temperature -40°C … +80°C Compensated Range 0°C … +80°C Accuracy (0-50°C) 0,1% FS Resolution < 0,01% FS Long Term Stability typ. Range < 1 bar: 1mbar
Range > 1 bar: 0,1% FS
Temperature Measuring range -20°C … +60°C Accuracy <0,2°C Interface SDI-12 Supply Voltage 5.5 … 34V DC Length 95mm / 3.74″ Diameter 22mm / 0.9″ Cable Polyethylene (PE), vented Cable length up to 100m Connector 7-pin M9 Binder jack (male) IP Protection IP68 (Probe), IP67 (Connector) Material in Contact with Media Stainless Steel 316L (DIN 1.4435) /Viton / PE