Caprari Level Start Air-operated level gauge for waste water

Level gauge mod. Level-Start has been designed to monitor the activation level of electric pumps installed to raise the waste water produced in urban and industrial areas and animal and breeding farms.

It has proved to be particularly reliable for heavy-duty work where incrustations due to grease or detergents, or false signals caused by surface foam obstruct the regular operation of other regulating systems.

Quick Specs:

The level is gauged by means of a watertight air-operated probe firmly positioned in the tank. The pressure determined by the hydrostatic load bearing on the probe is transmitted to the plant (by means of a ø 8 mm pipe) which activates the start/stop commands of the electric pump when the preset levels are reached.

Level-Start can either be supplied installed in the control and protection panel of the electric pump or as a separate unit in a fiberglass reinforced plastic housing with IP55 protection to install along with an already existing control device.

  • Each level gauge is present for a daily automatic "PROGRAMMED TANK CLEANING" function to eliminate accumulated solids. This is achieved by allowing the electric pumps to operate at a lower level than that at which they normally stop.
  • The pneumostatically transmitted measuring system has no electric circuits or contacts in the tank and is therefore also suitable for installation in the presence of gas.
  • One probe is sufficient to regulate the levels of several pumps.
  • Periodical maintenance operations to clean the floats are no longer necessary.

Data to specify with us

  • number of pump to be controlled
  • the installation type (in IP65 box protection or without box, to be installed in the control and protection panel of the electric pump)
  • any executions on request. NB: On demand control and protection panel complete with LEVEL-START are available.

The Level-Start is composed of:

  • measuring and controlling electric equipment
  • air-operated probe, complete with counterweight and 8 m of supporting cable in stainless steel
  • 20 m of air circuit pipe - electric equipment

Technical Features:

voltage supply of the electric circuit:
24 V AC
voltage supply of the programmer for sump cleaning (to be installed in the panel):
230 V single- phase
frequency of the electric circuit:
50 Hz or 60 Hz
maximum current carrying capacity of the electric circuit contacts:
5 A in AC
protection fuse on the card feed:
4 A fast-blow
minimum and maximum working temperature of the card:
from -5°C to +40°C
n° of controlled pumps:
up to 3
n° of probes for each sewage sump:
minimum level from the bottom of the sump:
0,5 m
maximum level from the probe flange at the highest level of electric pumps starting:
3,5 m
air restore of the pneumatic circuit:
maximum distance of the probe from the plant:
300 m
maximum temperature of the liquid:
automatic sump cleaning:
box protection (if provided):
exchange role relay: included


  • n° of controlled pumps exceeding 3
  • alarm level (preset; level must be specified)
  • maximum level higher than 1,7 m
  • maximum temperature of the liquid more than 90°C
  • contacts for remote control
  • function exchange role relay deactived if already installed in the power panel


Caprari Level Start Downloads

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