Quality Control
We are actively taking measures to improve product quality levels.


Why Hamamatsu?


Our Company

( )

Select your region and country.

Advanced electrostatic remover "Photoionizer"



The Photoionizer is a completely new type of electrostatic remover using "photoionization" for clean, easy, yet effective generation of ions. The Photoionizer provides big advantages over the corona discharge method which is generally used.

If you like the product on this page, save it to your wishlist.

Principle of operation

The Photoionizer is a completely new type of electrostatic remover using "photoionization" for clean, easy, yet effective generation of ions.
The Photoionizer provides big advantages over the corona discharge method which is generally used.The Photoionizer throughly ionizes molecules near the charged object so these ions in turn work effectively to remove electrostatic charges accumulated on the object.
The Photoionizer is certain to be the next generation of electrostatic charge removers, since it now eliminates all the problems conventional electrostatic removers have in terms of object, speed, environment and reliability.


No air flow

Ion generation constantly occurs over the entire volume exposed to soft X-rays. Ions generated near the charged object serve to effectively remove the electrostatic charge, so there is no need for sending generated ions toward the object by an air flow. The Photoionizer also removes electrostatic charges from lightweight parts and powder.

High ion density

In the corona discharge method, ions are mainly generated only near the electrodes. In the soft Xray method, however, ions are generated over the entire volume exposed to these soft X-rays, yielding a drastic improvement in the removal of electrostatic charges.

No overshoot

If ion generation balance is poor, the positive or the negative ions will continuously increase in large quantities, resulting in "overshoot" (generation of static charges of opposite polarity). The Photoionizer, however, simultaneously generates the same amount of "positive" and "negative" ions in an ideal balance that prevents overshoot.

No cleaning of electrodes required

Requires NO periodic maintenance usually needed on ordinary corona discharge ionizers.

No ozone generation

Ozone is generated when the air is exposed to specific types of UV rays (approx. 10 eV). The blue light of a corona discharge contains this type of UV ray. The Photoionizer, in contrast, emits soft X-rays (3 keV to 9.5 keV) into the air to make an ionization. This ion generation method does not generate any ozone.

No dust particles and electromagnetic noise generation

In the corona discharge method, microparticles in the air are attracted to the electrodes and then diffuse back as dust particles. Corona discharge accompanies the generation of electromagnetic noise. As long as the discharge method is used, the above problems are inevitable. In contrast, the soft X-ray method used by the Photoionizer eliminates these problems.


30 mm x 50 mm x 96 mm (W x H x D) [head]
About one-half the size of previous model. Installs even in narrow spaces.

Worldwide compatible power supply

Accepts 100 V to 240 V AC.

External control

15-pin D-sub connector.
Operates in two remote modes and provides 4 types of external outputs.

CE marking compliance

The Photoionizer complies with CE marking requirements therefore can be used in Europe.

Static charge removal performance




Parameter Discription / Value Unit
Soft X-ray tube Tube voltage (DC) 9.5 kV
X-ray emission angle 130 °
Input voltage AC100 V to AC240 V, Single phase 50 Hz / 60 Hz
Power consumption (Max.) 11 W
Operating temperature range 0 to +40
Storage temperature range -10 to +60
Operating humidity range Below 60 % (no condensation) -
Storage humidity range Below 85 % (no condensation) -
External control Ion ON/OFF control, Ion ON signal output, Error signals -
Applicable standards EMC IEC 61326-1:2013, Group 1, Class A -
Safety IEC61010-1:2010 -
Environment RoHS directive, WEEE directive -

Dimensional outline (Unit mm)

PhotoIonizer head: L9491

Controller: C12646


Four-head controller C11952
The C11952 controller is capable of controlling up to 4 PhotoIonizer heads (L9491) at the same time. It is ideal for removing static charges from large objects with large surface areas or for using multiple heads on multiple production lines.

Contact us for more information.

  • Literature
  • Price
  • Delivery
  • Custom order
  • Support
  • Other

Contact us