We want a 1-5Vdc output submersible pressure sensor which is seawater compatible to monitor the level of a salt water ballast tank over a range of 0 to 2.5 metres.
We would suggest the marine approved LMK458 with the range you require, but since it has a 4-20mA output you will need to add a 4-20mA to 1-5Vdc converter. There are two types of converter available, the 420i is loop powered but drops the voltage by a maximum of 9.5 volts, and the SLIMCON which must be separately powered by a 18-30Vdc supply.
LMK458 Salt Water Ballast Level Transmitter
- SKU ID: s1-lmk458-0004
- Part No: 766-2500-K-1-C-1-1-4-2-005-000
- Pressure Range: 0 to 2.5
- Units: mH2O
- Reference Type: Gauge / Vented (atm to +P)
- Output Signal: 4 to 20 mA, 2 wire
- Accuracy: 0.25% FS
- Installation Type: Probe version with nose cone
- Housing Material: Copper Nickel Alloy (seawater compatible)
- Diaphragm Material: Ceramic Al2O3 99.9%
- Media Exposed Seals: FKM
- Cable Type: TPE (125degC max)
- Cable Length: 5
- Cable Length Units: Metres (m)
420i Loop Powered 4-20mA to 1-5Vdc Converter
- SKU ID: s1-420i-0002
- Part No: II-420i-AA-8-000
- Input Signal: 0-20mA or 4-20mA
- Output Signal: 1-5Vdc
- Power Supply: Loop powered
- Installation: DIN Rail TS35
- Electrical Connections: Screw clamp with pressure plate
SLIMCON External Powered 4-20mA to 1-5Vdc Converter
- SKU ID: s1-slimcon-0001
- Part No: II-SLIMCON-JJ-6-00-00
- Input Types: 4-20mA, 0-20mA, 0-10mA, 0-10V, 2-10V, 0-5V, 1-5V – switch selectable
- Output Types: 4-20mA, 0-20mA, 0-10V, 0-5V, 1-5V – source/sink, switch selectable
- Power Supply: 18-30Vdc, typical 24Vdc
- Isolation: Full 3-Port
- Installation Type: DIN Rail TS35
- Electrical Connections: Screw clamp with pressure plate