Aplisens SGE-25 and SGE-16 Hydrostatic Level Probes

Aplisens SGE-25 and SGE-16 Hydrostatic Level Probes

Aplisens SGE-25 and SGE-16 Hydrostatic Level Probes measure liquid levels, basing on a simple relationship between the height of the liquid column and the resulting hydrostatic pressure. The pressure measurement is carried out on the level of the separating diaphragm of the immersed probe and is related to atmospheric pressure through a capillary in the cable.

The SGE-25 hydrostatic level probe is applicable to measure liquid levels in tanks, deep wells or piezometers.

The SGE-16 probe is a specialized device designed to measure water levels in narrow diameter piezometers or wells. Principles of operation, construction

The active sensing element is a piezoresistant silicon sensor separated from the medium by an isolating diaphragm. The electronic amplifier, which works in combination with the sensor, and is meant to standardize the signal, is additionally equipped with an overvoltage protection circuit, which protects the probe from damage caused by induced interference from atmospheric discharges or from associated heavy current engineering appliances.

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Technical Data

Technical data for the SGE-25 level probe

Measuring range

Any measuring range 1 ÷ 500 m H2O (the standard ranges: 4, 10, 25, 60, 100 m H2O are recommended)

Measuring Range
1 m H2O 4 m H2O 0…10 m H2O ÷ 500 m H2O
Overpressure Limit
(repeatable – without hysteresis)
40 × range 25 × range

10× range

(max. 700 m H2O)

Accuracy % FSO acc. to IEC 60770 0.6% 0.3% 0.2%
Accuracy % FSO acc. to BFSL 0.3% 0.15% 0.1%
Thermal error Typical 0,3% / 10°C

max 0,4% / 10°C

Typical 0,2% / 10°C

max 0,3% / 10°C

  • Long term stability: 0,1% or 1 cm H2O for 1 year
  • Hysteresis, repeatability: 0,05%
  • Thermal compensation range:
    • 0 ÷ 40°C – standard
    • -10 ÷ 70°C – special version
  • Medium temperature range:
    • -25 ÷ 40°C – standard
    • 0 ÷ 75°C – ETFE and PTFE version

Technical data for the SGE-16 level probe

  • Measurement ranges 10 ÷ 100 m H2O
  • Overpressure limit (repeatable – without hysteresis): 10 × range
  • Accuracy 0,3%
  • Hysteresis, repeatability: 0,05%
  • Thermal compensation range: 0 ÷ 40°C
  • Process temperature limit
    • 0 ÷ 40°C
    • (version with ETFE and PTFE cable): 0 ÷ 75°C

Download Datasheet: Aplisens Hydrostatic Level Probes SGE-25 and SGE-16

Reference: Aplisense.com

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