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.
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

Gas-Absorption Filters

Absorption Filters for Electrical Devices

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.
H2S Filter Capacity
Alcohol PPM vs. Time

Related Resources:

pdf Icon Brochure: Electrochemical Gas Sensor Components

pdf Icon Brochure: Sensor Components


Protection Vents and Diffusion Layer

Protection Vents and Dust Covers

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.
STOCK PRODUCT OFFERING – ADHESIVE DISCS
Dimensions Material Series
OD/ID (mm)* PMV10L PMV15 PMV20 PMV30
7.0/3.0 (N) PMV10LN PMV15N PMV20N PMV30N
10.0/7.0 (I) PMV10LI PMV15I PMV20I PMV30I
12.7/7.1 (W) PMV10LW PMV15W PMV20W PMV30W
20.0/13.0 (C) PMV10LC PMV15C PMV20C PMV30C

 

Dimensions Material Series
OD/ID (mm)* PMV15 Feature
12.7/7.1 (W) PMV15WH High temperature adhesive
12.7/7.1 (W) PMV15TWH Oleophobic with high temp adhesive
*1000 discs/roll
N, I, W & C are size codes.
Many other standard and custom sizes availble. Contact Porex.

 

POREX® Virtek™ PTFE Membrane Application Materials — Typical Properties
Application Material IP Rating † WEP mbar Airflow l/hr/cm² @70mbar Filtration Efficiency** >99.99% Thickness mm Max Operating Temp °C UL-94/746C* Salt Fog
PMV10 64,67 270 125 0.5 µ 0.13 260°C V-0/f2 No pen.
PMV10L*** 64,67 270 85 0.5 µ 0.3 100°C No pen.
PMV15 64,67 380 70 0.4 µ 0.18 260°C V-0/f2 No pen.
‡PMV15T 64,67 380 70 0.4 µ 0.18 260°C No pen.
PMV20 64,65,68 520 34 0.1 µ 0.25 260°C V-0/f2 No pen.
PMV25 65,67,68 750 15 0.2 µ 0.1 260°C V-0/f2 No pen.
PMV30 65,66,67,68 1000 4.5 0.1 µ 0.25 260°C V-0/f2 No pen.
WEP = Water Entry Pressure
RoHS, WEEE, REACH Compliant
** According to IEST RP-CC007.2 2009
***Laminated polyolefin mesh backing
† IEC std. 60529, IP 68 is a user defined test; will pass condition dependent
‡ Oleophobic Grade 8, AATCC TM 118
Properties are typical and not meant for specifications.
Properties for membrane only, selected options and adhesives may affect properties.
Testing results available upon request

 

POREX® Virtek™ PTFE Vent Plugs — Typical Properties
Part # Diameter mm Thickness mm WEP mbar IP Rating † Vent Airflow l/hr/cm² @70mbar Max Operating Temp °C UL-94 Rating
PD103032 3.2 3 450 64,67,68 1 260°C 5VA, f1
Plugs meet UL-94 5VA and F1 rating.
Assembly methods include: press fit, over-moulding, compression seal, or flange welding.

 

Adhesive Vent Available Sizes
Available Sizes
OD (in mm) ID (in mm)
7 3
10 7
10.2 6.5
11 7
12.7 7.1
13 10
14.8 11
14.8 7
15.8 9
16 11
18 13
18.6 10.6
19.1 11.5
20 13
25.4 19
50 30
   

*Highlighted rows indicate stock items.

Custom sizes available upon request

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


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.

Related Resources:

pdf Icon Brochure: Electrochemical Gas Sensor Components

pdf Icon Brochure: Sensor Components


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.
POREX® Virtek™ PTFE Materials for Sensors
Product # WEP mbar Airflow l/hr/cm2 @70mbar Thickness (mm) Filtration Efficiency** >99.99% Hydrophobic Typical Application
PMV10 270 125 0.13 0.50 μ Yes Dust Filter
PMV10L 270 85 0.3 0.50 μ Yes Dust Filter
PMG15 400 70 0.18 0.40 μ Yes Catalyst Carrier
PMG20 750 15 0.1 0.20 μ Yes Catalyst Carrier
PMG25 1000 5 0.19 0.19 μ Yes Catalyst Carrier
WEP = Water Entry Pressure
RoHS, WEEE, REACH COMPLIANT
**Testing results available upon request
Properties are typical and not meant for specifications. Properties for membrane only, selected options and adhesives may affect properties.

Related Resources:

pdf Icon Brochure: Electrochemical Gas Sensor Components

 pdf Icon Brochure: Sensor Components


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

Reflectivity Gap

Related Resources:

pdf Icon Datasheet: LED Reflectors

pdf Icon Datasheet: High Reflectivity Components

 Video Icon Demonstration video: Porex high efficiency diffuse reflector