The IMSL submersible level transmitter is ideal for applications requiring continuous submersion in liquids such as water, oil and other non aggressive chemicals. The IMSL offers excellent repeatability, resolution and stability for use in rivers and reservoir measurement. It uses the latest piezo-resistive media isolated silicon sensing technology and stainless steel diaphragm. A 316L stainless steel housing makes this submersible level transmitter the ideal product for repeatable and reliable hydrostatic level measurement. The IMSL is tempearture compensated and calibrated. Each device comes with a traceable serial number and calibration certificate.
Manufactured by: Impress Sensors & Systems
Model: IMSL Silicon Level Transmitter
River level
Reservoir level
Tank level
Borehole level
Aquifer level
Environmental monitoring
V-notch weir flow measurement
Output Signal And Supply Voltage | |
Output | |
2-Wire | 4-20mA |
3-Wire | 0-5V dc 0-10V dc 0-2.5V dc 0.5-4.5V dc (others on request) |
4-Wire | See spec sheet at rshydro.co.uk |
Supply Voltage | |
2-Wire | 9-32V dc |
3-Wire | 9-32V dc 13-32V dc 6-32V dc 5V dc (others on request) |
4-Wire | 3-12V dc |
Performance | |
Accuracy (non-linearity) | <±0.1% /FS (BFSL) <±0.06% / FS (BFSL) optional |
Hysteris | <±0.05% / FS typ. |
Setting Errors (offsets) | |
2-Wire | Zero and Full Scale, <±0.5% /FS |
3-Wire | Zero and Full Scale, <±0.5% /FS |
4-Wire | See spec sheet at rshydro.co.uk |
Permissible Load | |
2-Wire | Rmax = [(Voltage Supply - 9) / 0.02]Ω |
3-Wire | Rmin = 10 kΩ |
Output Resistance | |
4-Wire | ≤200m bar: 2.7-3.3 kΩ, >200m bar:4.0 - 6.0 kΩ |
Influence Effects | |
Supply | mV/V & 0.5 to 4.5 V - Ratiometric, other outputs - <0.005 % FS /1V |
Load | 0.05 % FSO / kΩ |
Permissible Temperatures and Thermal Effects | |
Media Temperature | -20°C to + 60°C (non freezing) |
Storage Temperature | -20°C to + 70°C |
Compensated Temperature Range | 20°C ±25°C |
Thermal Zero Shift (TZS) | < ± 0.02% / FS / °C (option code 2) < ± 0.01% / FS / °C (option code 1) |
Thermal Span Shift (TSS) | < ± 0.01% / °C |
Electrical Protection | |
Supply Reverse Polarity Protection | No damage but also no function |
Lightning Protection | Internally fitted |
Electromagnetic Compatibility | CE Compliant |
Mechanical Stability | |
Shock | 100 g/11 ms |
Vibration | 10 g RMS (20 ... 2000 Hz) |
Materials | |
Housing | 316L Stainless Steel |
O Ring Seals | Viton |
Diaphragm | 316L Stainless Steel |
Cable Sheath Material | PUR PVC (optional) FEP (optional) |