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The Valstat® SM20 is a series real-time electrostatic charge monitoring system that continually measures, displays, and records surface voltage on charged moving objects. It is a useful safety and preventive maintenance device that finds use in many industrial applications.

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Real time static charge monitoring system

Real time static charge monitoring system

The Valstat® electrostatic sensor is fixed at the location where the charge level on a moving target is to be monitored. Each sensor is connected to the respective Valstat® field station controller, which in turn are connected to a common touch panel. Depending on needed sensing points, the application and requirements of the user, the common touch panel is suitably located for monitoring and control purpose. The output signal from one to a maximum of eighteen Valstat® SM20 online electrostatic charge sensors can be connected to a colour touch panel for remote or local continuous monitoring and analytics. The data collected from these sensors can be used for raising an alarm when the measured value exceeds the optimal measurement range or a pre-set safety level, etc. In addition, it is possible to store, retrieve, and analyse the data that is collected.
Manufactured by: Valence Electrons Private Limited, India

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The system is distinct from a hand-held meter which is periodically used, and thus variations in measurement due to different operators, location, and distance from the charged object are completely eliminated. A real-time, accurate, and continuous signal proportional to the electrostatic charge is available for further analytics and diagnostics. The discharge or neutralising effect of the static charge eliminator is efficiently monitored for continual safety, and preventive maintenance. Expensive man-hours for inspection, testing, and validation are also effectively reduced.

      Application range 
  • Rotogravure, flexographic, and offset printing
  • Laminating and coating machines
  • Slitting, doctoring, inspection, and allied machines
  • Bag making, pouching, labelling lines
  • Film and paper sheeters
  • Plastic bottle, moulded parts making lines
  • FFS, other filling and overwrapping lines
  •   Touch screen monitor functions 
  • Touch screen in different sizes 4.3” to 10.1”, depending on the application
  • Display of real-time static charge
  • Normal/high static charge level indication
  • System calibration
  • Alarm display
  • Data logging, up to 20 MB internal and 32 GB (optional external SD card)
  • Real time and historical trends
  •   Valstat® SM20 electrostatic sensor features 
  • Measuring range -20 kV to +20 kV at 50 mm
  • Distance range 25 to 75 mm, depending on the application
  • Compact and easily mountable
  • Current consumption < 40 mA
  • 5 m length pre-wired cable
  • Operating temperature 0ºC to 50ºC
  • Humidity 35% to 85% RH, with no condensation
  •   Field station controller 
  • Input supply: 240 V AC + 10%, 50/60 Hz
  • Operating temperature 0ºC to 50ºC
  • Humidity 10 to 85% RH, with no condensation
  • Communication ports: MODBUS RTU
  • Relay output for alarm/indications
  • Provides safety and preventive maintenance
  • Reduces hazards to operators
  • Reduces quality-related problems
  • Reduces machine stoppages leading to improved productivity
  • Saves time – expensive man-hours for inspection, testing and validation are effectively reduced
  • Eliminates the possibility of errors due to operator, location, and distance

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