I have a borehole which is 35m deep. Normally the water level is about 10m below ground level, although since last summer it has dropped to about 30m. I have a conductivity relay to protect the borehole pump, but when the level is low, the pump rapidly draws down the level causing the relay switch to constantly trip on and off. I’d like to make up an Arduino based controller to regulate the pumping time and recovery interval to match the water availability. 0-25mWC should cover the working range.
We would suggest the LMP 307 which will provide a 0.5 to 4.5V output over the full scale range and this can run from 2.7V through to 5.5V dc power supply, which is ideal to run from the arduino in-built 3.3V or 5V power supply.
LMP 307 Borehole Depth Sensor
- SKU ID: s1-lmp307-48-30041
- Sensor Type: Level only
- Level Sensing Range: 0 to 25
- Units: mH2O
- Reference Type: Gauge / Vented (atm to +P)
- Output Signal: 0.27…2.43Vdc to 0.55 to 4.95Vdc, 3 wire ratiometric to supply
- Supply Voltage: 2.7…5.5Vdc
- Accuracy: 0.35%FS (11-12bit res)
- Installation Type: Submersible probe with flush diaphragm and detachable nose cone
- Housing Material: Stainless Steel 316L
- Diaphragm Material: Stainless Steel 316L
- Media Exposed Seals: FKM
- Cable Type: PUR (70degC max)
- Cable Length: 30
- Cable Length Units: Metres (m)