Hydrocont M

Level sensor for water and waste water Ø 22mm

4-20 mA – output, optional temperature measurement Pt100, dry capacitive measurement system + over voltage protection

  • Small housing, 22mm radius
  • Food and drink water approved
  • No elongation due to a special cable with integrated steel rope

 

Description

The filling level sensor Hydrocont® M with integrated analogue evaluation electronic is a compact transmitter for continuous measuring of fill levels and temperatures in liquid media.

This includes e.g. the measurement of levels in reservoirs, clarification basins, deep wells etc., but also the fill level measurement in closed containers.

For applications, where food or drink water suitability is necessary, a corresponding variant can be ordered.

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 various applications with liquid media like water, waste water, solvents, oil, sludge, grease, cleaning agents, etc.

Besides the level measurement it is possible to get the temperature of the medium by an integrated Pt100 resistor in parallel with this sensor.

 

Function

The sensor of the fill level measurement system Hydrocont® M is put into the medium by the carrying cable by using a suitable fixing e.g. cable clamp fixing, screw plug or connection housing.

The liquid medium contacts directly without using a pressure transferring liquid the ceramic membrane 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. 25-times of nominal load at a sensor with a pressure range of 0…100 mbar without damage.

The filling level proportional hydrostatic pressure signal of the ceramic membrane is measured by the integrated analogue electronic and converted in a output current signal of 4…20mA.

The measurement signal range is adjusted by factory in many standard measurement ranges. A factory provided adjustment by customer specification is also possible.

Optionally a temperature dependent resistor Pt100 in 3-wire-technic can be integrated in the sensor. By this temperature measurement resistor a temperature measurement of the filling medium with removing the lead resistance can be realized in parallel to the filling level measurement. When using a wall mounting connection housing a Pt100 transmitter that is adjusted by customer specification can be integrated.

Integrated over voltage protection components prevents the filling level sensor from destruction by atmospheric influences like e.g. thunderstrike.

Ueberlast_40 Temperaturmessung_integriert 4_20mA_2_Draht Blitzschutz Genauigkeit_0_1 Bauform_schlank
Auxiliary power
Output 4..20 mA, 2-wire
Permitted supply voltage
Output signal Strom 4…20mA 11 V up to 45 V DC
Output signal Strom 0…10V 14 V up to 30 V DC
Ex-Variante 12,5 V up to 25,2 V DC
Residual ripple ≤ 2 Vss
Delay time output T90 < 5ms
Permissible product temperature -20°C…+70°C
Overvoltage protection
Max. Signal voltage 30V (Peak value; against earth)
Nominal discharge current 2 500A (Wave 8/20µS)
Measuring accuracy
Temperature deviation ≤ 0,15% / 10 K of the nominal range
Deviation in characteristics ≤ 0,1% / 0,25% of the nominal range
Calibration deviation ≤ 0,05% of the nominal range
Long term drift ≤ 0,15% / year of the nominal range
Influence of supply voltage ≤ 0,02% / 10V of the nominal range
Resolution infinite, because analog measurement electronics
Material
Membrane Ceramic AL2O3 96%
Material slopes sensor Steel 1.4404
Sealing screw Steel 1.4404
Gaskets FPM (Viton®) / EPDM / Neopren®
Connection housing Polyacetal POM (Delrin)
screw-in thread made of Steel 1.4404
Extension cable PE / PUR
Protection
Material slopes sensor IP68
Sealing screw / Connection housing IP67
Wall-mounted casing IP65

Documentation german

User manual
Datasheet

Documentation english

User manual
Datasheet

Product configurator