Instruments

CTL32 Powder Chargeability Test Apparatus

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For measurement of a material's propensity to generate charge.

Benefits  

  • Ideal for simulating on plant charge accumulation within various pipe media under laboratory conditions
  • Easy quick release Faraday pail lid
  • Variable speed vacuum device for varying velocity of product flowing through test pipes
  • Antistatic powder delivery / conveyor belt so that any charge generated is due to the simulated  process only

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Powder Chargeability Test Apparatus

Whenever one material moves against another, electrostatic charging may result. The net-rate of charge acquisition will depend on both the rate of charge generation and the rate of charge dissipation. While measurements of resistivity and charge relaxation time (refer to JCI 155v6 Charge Decay Analyser) reveal a material’s ability to dissipate charge, chargeability indicates its propensity to generate it. Chilworth Technology manufactures equipment for determining a material’s propensity to generate charge. Various factors will have an affect on the end results of a particular chargeability test series.

These are :

  1. Particle size
  2. Moisture content
  3. Humidity
  4. Media being transited (e.g. glass, stainless steel, polypropelene or PVC etc)
  5. Velocity of travel through the media

 

The latter two items are considered in the test procedure and are adjusted accordingly to simulate various conditions that could occur on plant.

Functional Specification & Deliverables

  •  Custom made stainless steel Faraday cage and drum
  •  Supply of powder collection bags
  •  Electronic Manometer
  •  Electrometer
  •  Variable speed conveyor belt system (transit time of belt typically set to 30 S)
  •  1 stainless steel, 1 glass, 1 polypropylene tube for powder transit
  •  Sets of leads for measurement apparatus
  •  Baseplate – chargeability components already pre-mounted for ease of installation
  •  Stainless steel funnel and support stand
  •  Stopwatch
  •  Inline orifice plate for system outlet – already fitted
  •  Test instruction manual detailing installation, commissioning, test procedure and routine maintenance
  •  Industrial vacuum suction device with Hepa filter installed
  •  Industrial vacuum suction device variable speed controller – already fitted
  •  Miscellaneous instruction manual for Electrometer (on cd), manometer and stopwatch
  •  Fittings for the drum inlet and outlet (already fitted)

The following is available at an additional cost -

  • Digital Humidity / temperature meter
  • JCI 155v6 Charge Decay Time Analyser

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