EC series
EC series
Tack free
Richil
Grade
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What is “EC series”? |
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In running the explosion-proof facilities, there exists a belief that, “if the metal devices are used,
it is static free”. In a way, however, this concept is wrong.
Check your manufacturing sites more carefully. You may well find that the
devices themselves are,
without knowing, becoming insulation property caused by the formation
of insulation layers due to
fouling stacked in the interior of devices under certain conditions. In fact, this has resulted in static
hazards in some cases. The oxide formation and surface roughening caused
by corrosion also tend
to increase the chance of static discharge.
The development concept of our “EC series” is to prevent static buildup
while making full use of
excellent anti-adhesive and anticorrosive properties of fluorocarbon.
In other words, the fluorocarbon coating, which prevents sticking of insulation-causing fouling and
protects the surface from corrosion as well as prevents static charge, is the “EC series”.
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Securely Controlled Leakage Resistivity |
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The “Electrostatic Safety Guidelines” issued by the National Institute
of Occupational Safety and
Health, Japan provides that the leakage resistivity of 108 Ω and under is valued to be low in
static charging and 106 Ω and under to be almost none. Thus, the products
with the leakage
resistivity of 108 Ω and under can be considered securely anti-static.
By setting the company
standard to below 107 Ω for the “EC series”, we have achieved the actual measurement value
to be in the range of 104-105 Ω.
Additionally, we verify and ensure the leakage resistance to be within
our standard by measuring
all of our actual construction products.
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Charging Level (Charge Potential Indication [kv]) |
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Leakage Resistivity Indicator [Ω] |
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Almost None (0.01 and under) |
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106 and under |
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Lower (0.01-0.1) |
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106-108 |
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Normal (0.1-1) |
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108-1010 |
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Large (1 and over) |
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1010 and over |
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Continuity Property |
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With our own original coating technology, we have successfully allowed
the static charge, which
previously occurred even with the thick film specifications, escape in the direction towards the
film volume (thickness) for “EC series”.
As this eliminated the need of the insulation intermediate layer to obtain
film thickness, the
security that was never attainable with the structure to let the static
charge escape in the
direction towards the surface has now been realized.
This technology has been utilized for the entire “EC series” ranging from thin film specifications
for washing purpose to thick film specifications for corrosion purpose and can be used securely.
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Sample |
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PTFE
Sheet Lining
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PFA
Coating |
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Surface Continuity
PFA
Coating |
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Volume Directional
Continuity
NF-240EC |
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Applied Voltage |
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Surface Charge Potential |
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-10 |
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-8 |
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-5 |
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-5 |
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0 |
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-10 |
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-11 |
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-8 |
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-8 |
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0 |
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-20 |
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-17 |
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-3(*) |
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-3(*) |
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0 |
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-25 |
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-19 |
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- |
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- |
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0 |
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*As the applied voltage (static charge) caused continuity breakage of the film,
a pinhole was generated, and the applied voltage leaked onto the base
metal plate (continuity). Thus, the applied voltage surface charge
potential lowered. The measurement at -25 kv was cancelled. |
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In surface directional continuity, it has been proved that the static charge
actually occurs on the surface by the high applied voltage experiment.
For secure use, the volume directional continuity is essential. |
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EC Series Specification List |
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EC Series Specification List(PDF) |
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