Sensors
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Superior components that maximize the performance of your sensor applications.
Sensors
_______
Superior components that maximize the performance of your sensor applications.
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Protect and enhance sensor performance with cutting-edge technology

Manufacturers across the world trust Porex for cutting-edge technology that outperforms the competition. The usage of POREX materials maximizes the performance for many sensor applications, including gas absorption, effective venting, precise diffusion, electrolyte holding and wicking, catalyst support, and reflective media.

Our customizable solutions for sensor manufacturers can be tailored to specific applications or devices – and seamlessly integrated with many manufacturing processes.

Our products:

  • Protects the sensor from moisture and dust while allowing fast gas diffusion.
  • Contain safe materials, eliminating the use of materials that can cause skin irritations or inhalation hazards.
  • Meet your specific application needs and can be customized to various shapes and sizes.
REGISTER FOR OUR
ON-DEMAND
WEBINAR:

Making Gas Sensors Safer & More Effective with
Porous Polymers

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Absorption Filters for Electrical Devices

Gas-Absorption Filters

Minimize false readings or premature degradation

Protection Vents and Dust Covers

Protection Vents and Diffusion Layer

Equalize pressure and repel contaminants

Electrolyte Reservoirs and Wicks

Electrolyte Reservoirs and Wicks

Safely facilitate electrolyte chemical reactions

Catalyst Carriers

Catalyst Carriers

Consistent performance with minimal shrinkage

Reflective Material

Reflective Materials

Optimize your reflective media options

Absorption Filters for Electrical Devices

Gas-Absorption Filters

Minimize false readings or premature degradation

Gas-absorbing filters from Porex target specific gases that may cause a sensor to have a false reading or cause premature degradation of the cell itself.

Specifically designed for your sensor devices, our gas-absorbing filters:

  • Are effective at capturing a wide range of gases that can be harmful to your sensor, including H2S, SO2, HMDS, organics, alcohols and many others.
  • Absorb larger amounts of the problem gas –Compared to competitive materials, POREX® filters absorb more problem gas per unit volume, lasting longer than competitive products.
  • Contain safe materials–POREX filters are constructed with safe-to-use reagents, unlike competitive products with toxic lead-containing components.
Download our Tech Brief:
Overcoming challenges with harmful lead acetate filters
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H2S Filter Capacity
Alcohol PPM vs. Time

Protection Vents and Dust Covers

Protection Vents and Diffusion Layer

Equalize pressure and repel contaminants

POREX Virtek® IP-rated PTFE vents are designed to provide fast gas diffusion, while repelling dust, water and other contaminants. Specifically designed for electronic devices, our protection vents:

  • Deliver fast detection –Allows for faster diffusion of target gases, leading to faster detection.
  • Equalize pressure–Reduces pressure build-up and allow heat to escape electronic enclosures, because its air-permeable structure acts as a pressure-relief valve, protecting the enclosure seals from premature failure.
  • Protect from contamination–Protects the internal components by repelling water, sweat, oils and other liquids.
  • Free of PFOA: Compliant with (EC) 1907/2006 REACH / Regulation (EU) 2019/1021 POP

POREX Virtek® PTFE Membrane — Typical Properties

Item NumberIP Rating †WEP* Typical
mbar
Typical Airflow
l/hr/cm² @70mbar
Filtration Efficiency**
>99.99%
Thickness
mm
Max Operating
Temp °C
UL-94/746CSalt Fog$
PMV1064,672701250.5 µ0.13260°CV-0/f2No pen.
PMV10L***64,67270850.5 µ0.3100°CNo pen.
PMV1564,67380700.4 µ0.18260°CV-0/f2No pen.
‡PMV15T64,67380700.4 µ0.18260°CNo pen.
PMV2064,65,68520340.1 µ0.25260°CV-0/f2No pen.
PMV2565,67,68750150.2 µ0.1260°CV-0/f2No pen.
PMV2765,66,67,6810005.00.1 µ0.19260°CV-0/f2No pen.
PMV3065,66,67,6810004.50.1 µ0.25260°CV-0/f2No pen.

† IEC std. 60529; IP 68 is a user defined and results must be verified by the user
*WEP = Water Entry Pressure
** According to IEST RP-CC007.2 2009
$ASTM B117-11 test method
***Laminated polyolefin mesh backing
‡ Oleophobic, AATCC TM 118 – Grade 8 – other membranes can also be treated to meet Grade 8 upon request
Properties are typical and not meant for specifications. Selected options and adhesives may effect properties
RoHS, WEEE, REACH Compliant (PFOA Free)

STOCK PRODUCT OFFERING BY MATERIAL SERIES – POREX Virtek® ADHESIVE DISCS

Dimensions
OD x ID (mm)*PMV10LPMV15PMV20PMV30
7.0 x 3.0 (N)PMV10LNPMV15NPMV20NPMV30N
10.0 x 6.0 (P)PMV10LPPMV15PPMV20PPMV27P**
12.7 x 7.1 (W)PMV10LWPMV15WPMV20WPMV30W
20.0 x 13.0 (C)PMV10LCPMV15CPMV20CPMV30C
12.7 x 7.1 (W)PMV15WH#
12.7 x 7.1 (W)PMV15TWH##

*1000 discs/roll
**PMV27 will become the new standard offering – other sizes will follow
# With high temperature adhesive (good to 150 °C )
## Oleophobic Treated and high temperature adhesive (good to 150 °C )
N, P, W & C are size codes.
Many other standard and custom sizes available. Contact Porex for more information
Virtetek PTFE

Adhesive Vent Available Standard Sizes

Available SizesAvailable Sizes
OD x ID (mm)Parts Across
5 x 24
7 x 3*1
7.6 x 3.31
7.6 x 3.34
10 x 6*1
10 x 65
12.7 x 7.1*1
14 x 81
20 x 13*1
21 x 161
25.4 x 191
30 x 251
40 x 321
40/19.5 x 30/9.5**6
*Some materials / size options in-stock
**Rectangular format
Longer lead times for non-stocked items
Custom sizes available upon request

POREX Virtek® PTFE Vent Plugs — Typical Properties

Item NumberDiameter
mm (in.)
Thickness
mm (in.)
WEP* mbarIP RatingTypical Vent Airflow
l/hr @70mbar
Max Operating
Temp °C
Filtration Efficiency
(99.99%)
UL-94 Rating
PD1030323.2 (1/8″)3 (1/8″)45064,67,681260°C0.5 µ5VA, f1
PD1030636.3 (1/4″)3 (1/8″)45064,67,683.8260°C0.5 µ5VA, f1

*WEP = Water Entry Pressure
† IEC std. 60529; IP 68 is a user defined and results must be verified; product has not been specifically tested – passing is based on results from similar products
Assembly methods include: press fit, over-molding, compression seal, adhesive bonding or flange welding.
Numerous custom and standard options available. Please contact your local Porex sales representative to determine what is available.
Properties are typical and not meant for specifications.
RoHS, WEEE, and REACH Compliant (PFOA Free)

Related Resources:

pdf Icon Brochure: Electrochemical Gas Sensor Components

pdf Icon Brochure: Sensor Components

Video Icon Demonstration video: Keep electronics dry and protected with POREX Virtek PTFE vents

Video Icon Demonstration video: Porex Virtek PFOA Free Membrane vs. Cast and Non-woven Membranes

pdf Icon PFOA Free Statement


Electrolyte Reservoirs and Wicks

Electrolyte Reservoirs and Wicks

Safely facilitate electrolyte chemical reactions

Electrolyte reservoirs and wicks are needed to retain and deliver an electrochemical system’s electrolyte to facilitate the chemical reaction. POREX® fiber and foam media can be used for reservoirs, general wicking, and supporting of fluids within electronics and sensors.

Engineered for optimal capacity and directional flow, our electrolyte reservoirs and wicks:

  • Minimize inhalation and skin hazards–Made from safe-to-use PP or PE, our materials eliminate the need for glass wool, which can cause skin irritations and health issues when inhaled.
  • Meet your application specifications–Product fluid retention, density and flow orientation can be tailored to meet your specific application needs.
Download our Tech Brief:
Eliminating Hazardous Glass Wool from Sensor Electrolyte Reservoirs
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Catalyst Carriers

Catalyst Carriers

Consistent performance with minimal shrinkage

POREX Virtek PTFE catalyst carriers form the substrate of electrochemical sensor electrodes. The electrode portion of an electrochemical sensor collects the generated current and is often coated with a paste containing precious metal, such as platinum.

  • Available in rolls, sheets or precut shapes.
  • Minimal shrinkage during catalyst curing.
  • Structure does not change under pressure.
  • Free of PFOA: Compliant with (EC) 1907/2006 REACH / Regulation (EU) 2019/1021 POP

POREX Virtek® PTFE Materials for Sensors

Item NumberWEP*
mbar
Typical Airflow
l/hr/cm2 @70mbar
Thickness
(mm)
Filtration Efficiency**
>99.99%
HydrophobicTypical Application
PMV102701250.130.5 μYesDust Filter
PMV10L***270850.30.5 μYesDust Filter
PMG15400700.180.4 μYesCatalyst Carrier/ Diffusion membrane
PMG20750150.10.2 μYesCatalyst Carrier/ Diffusion membrane
PMG25100050.190.1 μYesCatalyst Carrier/ Diffusion membrane
*WEP = Water Entry Pressure
** According to IEST RP-CC007.2 2009
***Laminated polyolefin mesh backing
Properties are typical and not meant for specifications. Selected options and adhesives may effect properties
RoHS, WEEE, REACH Compliant (PFOA Free)

Reflective Material

Reflective Materials

Optimize your reflective media options

Porex provides a portfolio of highly reflective components for optical sensors and other sensors that use or gather light. Our pure POREX Virtek PTFE reflective components have industry-leading UV and visible light reflectivity.

Available in rolls, sheets, die-cut parts, or custom 3-D shapes to meet your application needs, our reflective materials:

  • Eliminate hot and dark spots–POREX Virtek PTFE reflects light in all directions, causing the light to be spread evenly across a surface and eliminate hot spots.
  • Increase efficiency – With more than 97% average reflectance over the entire light spectrum, our reflective materials capture wasted light and deliver directly to the lighting task.
  • High temperature tolerance of up to 260°C
  • Free of PFOA: Compliant with (EC) 1907/2006 REACH / Regulation (EU) 2019/1021 POP
Reflectivity Gap