Capcont M

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For capacitive fill level supervision in liquids and solid materials

  • For liquids and bulks
  • Simple installation and setup
  • Corrosion-resistant



The devices of the series Capcont M with integrated evaluation electronic are compact fill level limit switches for supervision of fill levels in liquids and solid materials in containers or pipelins at process temperatures from -30°C to +125°C and process pressures from -1 up to 10 bar.

The device is suitable for limit value detection or also as dry run protection in liquids and viscous substances but also in powdery and fine-grained materials, like e.g. grain, flour, powdered milk, mixing food, cement, chalk or gypsum. It can be used in electrically conductive as well as non-conductive materials.


The fill level limit switch Capcont M is a capacitive operating sensor with limit value detection.

Electroden rod, filling material and container wall realizes an electrical capacitor. A fill material changing causes a capacity change that is evaluated by the electronic and is converted into a corresponding switching reaction. At transgression or underrun of the limit value a switching signal at the PNP switching output is created. This allows a control of relays, contractors, magnetic valves, light signaling units, horn as well as SPS inputs. A plugable yellow LED indicates an active PNP switching output.

A possibility for change over the minimum / maximum safety is integrated. The Die adjustment of the reaction sensivity is made by a potentiometer.

4_20mA_2_PNP Prozesstemperatur_125 Druck_bis_10 Korresionsbestaendig Schuettgueter_Fluessigkeiten
Auxiliary power
Supply voltage 10 V… 35 V DC (protected against polarity reversal)
Residual ripple ≤ 2 VSS (only within the permissible voltage limits)
Current consumption ≤ 10mA switching outputs in idle mode
Isolation voltage 75 V DC
Switching output
Function PNP-switching on +Vs, principle (NO/NC)
invertible via jumper
Output voltage VS1 ≥ +Vs – 2V
Output current ≤ 250mA current-limited, shortcircuit proof
Rise time ≤ 30µs RL ≤ 3000 Ω
IL ≥ 4,5mA
Delay time ≤ 200ms
≥  50Hz
Switching cycles ≥ 100.000.000
Switching hysteresis depends on the media
Sensitivity adjustment multi-start trimmer
Rod isolation
(medium contact)
PTFE – polytetrafluoroethylene (Teflon®)
Process connection
(medium contact)
Steel 1.4404 (AISI 316L)
Steel 1.4571 (AISI 316Ti)
Connection housing die-cast aluminium housing in powder-coated finish
Cable screw connection brass nickel-plated screw
sealing CR / NBR
(medium contact)
medium-contact FPM – fluorelastomer (Viton®)
EPDM – Etylen-P

Documentation german

User manual

Documentation english

User manual