Hydrostatic filling level measurement, suitable also for Ex areas
with dry capacitive measurement system
with display, 4-20mA or 0-10V output and 2 pnp switching outputs
| Advantages |
Fill level measurement in basins, channels and tanks
Variety of process connections to meet all requirements eg. thread or hygienic connections available
High-precision, dry capacitive ceramic measuring cell, high purity 99.9%
Housing versions in stainless steel and in various plastics with plug or clamp connection
For use in hazardous areas
Tube extension and cable version for mounting from the top
Measurement display on high brightness LED display
Good readability
Easy commissioning
Measurement independent of foam, dk-value and of tank internals
| Application description |
The devices of the series Hydrocont® S50 with integrated digital evaluation electronic are compact sensors for measuring and monitoring of fill levels.
The excellent characteristics like highest strength against pressure and pressure blows, high resistance against chemicals and corrosion, very good insensitiveness against temperature shocks and EM interference, highest accuracy and long term stability and also low influence of temperature makes it possible to use the sensor in all pressureless containers for liquid medium like water, waste water, solvents, oil, sludge, grease, cleaning agents, etc.
The level measurement system Hydrocont® S50 is built in the wall of the medium container. The medium contacts directly the ceramic membrane of the sensor without using a pressure mediator liquid and causes there a deflection of the membrane because of the hydrostatic pressure of the medium.
At the maximum deflection the membrane contacts a robust ceramic carrier and because of this, the membrane come through over pressure of e.g. 80-times of nominal load at a sensor with a pressure range of 0...50 mbar without damage. The fill level proportional pressure signal of the ceramic membrane is recorded from a processor with high resolution, adjusted according to the settings and converted into a high resolution output signal of 4...20mA or 0...10V. By using 3 keys and an LED display the sensor measurement range, the display, the PNP-switching outputs and the damping can be adjusted or the behaviour in the case of failure and the release of the fast adjustment can be set.
| Function description |
The level measurement system Hydrocont® S50 is built in the wall of the medium container.
The medium contacts directly the ceramic membrane of the sensor without using a pressure mediator liquid and causes there a deflection of the membrane because of the hydrostatic pressure of the medium.
At the maximum deflection the membrane contacts a robust ceramic carrier and because of this, the membrane come through over pressure of e.g. 80-times of nominal load at a sensor with a pressure range of 0...50 mbar without damage.
The fill level proportional pressure signal of the ceramic membrane is recorded from a processor with high resolution, adjusted according to the settings and converted into a high resolution output signal of 4...20mA or 0...10V.
By using 3 keys and an LED display the sensor measurement range, the display, the PNP-switching outputs and the damping can be adjusted or the behaviour in the case of failure and the release of the fast adjustment can be set.
The switching state of the two PNP-switching output is signalled by one LED for every output.
| Technical data |
Output variants A / B / C / D: 4 to 20 mA, 2-wire, Profibus PA
Output variants E / F / G / H: 0 .. 10 V, 3-wire
Permitted supply voltage:
Version C / D: 10.5 V to 45 V DC
Variant A / B / E / F / G / H: 14.5 V to 45 V DC
Ripple: ≤ 2 Vpp
Temperature deviation: ≤ 0.1% / 10 K of the nominal measurement range
Accuracy: ≤ 0.1% / 0.2% of nominal measurement range
Calibration deviation: ≤ 0.05% of the nominal measurement range
Long term drift: ≤ 0.1% / year of nominal measurement range
Supply voltage influence: ≤ 0.02% / 10 V of nominal measurement range
Resolution: better than 1 uA and 0.5 mV (16 bits = 65536 steps)
Delay time output: at damping 1 T90 260 ms typ, max. 310 ms
Adjustment range damping: 0.3 ... 30 seconds / 100 levels
Outputs (S1 / S2): 2x PNP-switching to + VS
Output current: > 250 mA, current limited, short circuit protected
Protection IP67
Membrane material:
Standard 96% AL2O3
High-purity AL2O3 99.9%
Process connection material: steel 1.4404 / others on request
Temperature release material: steel 1.4404 / others on request
Sealing material: Viton® / EPDM / Neoprene® / perfluoroelastomer
Material connection housing: steel 1.4301 / PUM - Delrin® / PBT
Material carrying cable: PE / FEP
Fluid Temperature: -40°C... +125°C (140°C for 1h) in carrying cable -20°C... +70°C
Ambient: -40°C. .. +85°C, at carrying cable -20°C. .. +70°C