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Heatable Dispensers

Basically piezoelectric microdispensers work well in a certain viscosity range (up to 5 mPa·s). Substances of higher viscosity can be succesfully dispensed when...

  • Diluted applying an appropriated solvent (Micro droplets evaporate very rapidly)
  • The viscosity lowers due to heating. 

Features

  • Piezo-electrically driven microdispensers with the ability to eject droplets down to 0.25 nanoliters
  • Micro dispensers are enclosed by a heater element
  • Various types with different fluidic and electrical connectors available
  • Programmable control device multi-dos (Dispensers Accessories)
  • Stroboscope unit for visual control of the operation (Dispensers Accessories)

Heatable dispenser with cartridge as liquid reservoir
(A010-301)

   Enlarge...

A separate heater exists for this reservoir. In addition, vacuum or pressure from an external source can be applied. Pressure is used to prime the microdispenser while a slight vacuum helps to keep the nozzle free of adhesive.
Heatable dispenser with stainless steel tube connector
(A010-300)		   Enlarge...

 

Parameter   Typical Value   Unit
   Complete Setup with Heatable Dispenser
          Enlarge...
Supply Voltage
   70...100   Volts
Pulse Width
   20
   Micro Seconds
Frequency
   ≤  1000
   Hertz
Droplet Volume
   0.25 ... 0.60
   Nano Liters
Volume Flow
   ≤ 36
   Micro Liters per Minute
Repeatability   < 1
   %
Temperature
   < 120
  Degree Celsius

Temperature Controller

  • Accuracy of the displayed process value < 1.0 K at 100 °C
  • Event input for changing function and set points
  • PID controller with self-tuning option
  • Input sample rate: 10 Hz
Order Code: A020-011		   Enlarge...

Dispensable Media

  • Adhesives ET UVO-114, ET OG169, ET 301-2, Epoxy Technologies (see Applications)
  • Delo Photobond® 4302
  • Glycerol, up to 100% glycerol
  • Ethylene glycol, up to 100%
  • Liquid Crystals Merck Licristal ZLI-2222-100 (approx. 12 mPas) and MLC-6681 (approx. 95 mPas) at 43 °C
  • Byllux 6308 (Nano-Tip-HV, Byllux 6508 (Nano-Tip-HV, Pico-Tip)
  • Dymax 628 VLV (Nano-Tip-HV)
  • NOA74, NOA75 (Nano-Tip-HV, Pico-Tip)
  • NOA89 (Nano-Tip-HV, Nano-Tip, Pico-Tip)

Note also the list of media supported by our standard dispensers. Please contact us if the medium you want to dose is not listed here.

Influence of the viscosity on the dosage volume:  Lower viscosity ( = higher temperature) increases drop size and speed. Enlarge...


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