We need to measure the water level in a well down to 200 meters to protect a well pump by ensuring that it always stays under water. The level which we will be measuring could be up to 200 meters of H2O, and the special vented cable should be 250 meters long. We will need to send 4/20mA output, a compact display and switch contact output as well.
We would suggest the LMP307 which has a IP68 submersible cable outlet rated to a water depth of 250 metres, and the PA440 which will allow the 4-20mA to pass through and provide a digital display of the water level and PNP switch output for sending to the device which will ensure the pump stays underwater.
LMP307 Submersible Well Pump Level Transmitter
- SKU ID: s1-lmp307-0002
- Part No: 451-2002-1-1-1-1-3-2-250-000
- Sensor Type: Level only
- Level Sensing Range: 0 to 200
- Units: mH2O
- Reference Type: Gauge / Vented (atm to +P)
- Output Signal: 4-20mA, 2 wire
- Accuracy: 0.35%FS above, 0.5% FS below 4mH2O (11-12bit res)
- Installation Type: Submersible probe with removable nose cone
- Housing Material: Stainless Steel 316L
- Diaphragm Material: Stainless Steel 316L
- Media Exposed Seals: FKM
- Cable Type: PUR (70degC max)
- Cable Length: 250
- Cable Length Units: Metres (m)
PA440 Remote IP65 LED Loop Powered Indicator
- SKU ID: s1-pa440-0002
- Part No: 851-1-2-3-1-D-G-000
- Analogue Output: 4-20mA (2 wire)
- Display: LED
- Housing Material: Plastic ABS
- Switch Contacts: 2
- Electrical Connection: Cable gland M16x1.5
- Engineering Unit Label: mH2O