Hydrostatic Level Probe – Aplisens SGE-25 And SGE-16 Series

Features

  •  Any measurement range from 1 up to 500 m H2O
  •  Integrated internal overvoltage protection circuit
  •  Marine certificate DNV
  •  ATEX Intrinsic safety
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Principles of operation, construction
The probe measures 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 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.

Applications
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.

Specification

SGE-25 level probe
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 0.60% 0.30% 0.20%
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 0.0005
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
CAUTION: The medium must not be allowed to freeze in the immediate vicinity of the probe
SGE-16 level probe
Measurement ranges 10 ÷ 100 m H2O
Overpressure limit (repeatable – without hysteresis) 10 × range
Accuracy 0.30%
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

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Aplisens SGE-25 and SGE-16 Hydrostatic level probes-DpstarGroup

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