Home > Chemical Detection > Technology > Sensors > Surface Acoustic Wave Detection (SAW)

SAW detectors rely on chemically selective polymers that absorb target gases, producing a measurable change in a property of the polymer (resistance, capacitance, etc.). SAW sensors are piezoelectric crystals that detect the mass of chemical vapors absorbed into chemically selective coatings on the sensor surface. This absorption causes a change in the resonant frequency of the sensor. Many SAW sensor coatings have unique physical properties that allow reversible adsorption of chemical vapors.

Manufacturer
Biosensor Applications Sweden AB (1)
Defiant Technologies (3)
Electronic Sensor Technology, Inc. (2)
Mine Safety Appliances Company (MSA) (4)
SenGenuity (1)
Transportability
Pocket Size (3)
Handheld (2)
Person-Portable (3)
Benchtop/Fixed (3)
Availability
Commercially Available (7)
Discontinued (4)
Unit Cost
$5,000 - $10,000 (3)
$10,000 - $20,000 (1)
$20,000 - $50,000 (4)
$50,000 - $100,000 (1)
N/A (2)
Sample Introduction
Solid (2)
Vapor/Gas (9)
Sensitivity / Detection Limit
ppm (5)
ppb (4)
ng (1)
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4500 zNose

4500 zNose

Electronic Sensor Technology, Inc.

Employing a trap and helium carrier gas, the Model 4500 injects samples into a heated column where s...

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Biosens

Biosens

Biosensor Applications Sweden AB

Biosens instruments are based on an immunoassay combined with Surface Acoustic Wave (SAW) detection ...

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Canary-0

Canary-0

Defiant Technologies

Canary-0 provides a gas detection module similar to that found in the other Canary models, but minim...

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Canary-One

Canary-One

Defiant Technologies

Canary-One™ combines two micro-fabricated components: a chemical pre-concentrator and a SAW micro-ba...

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Canary-Two

Canary-Two

Defiant Technologies

Defiant’s Canary-Two™ combines three micro-fabricated components: a chemical pre-concentrator, a gas...

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CW Sentry

CW Sentry

Mine Safety Appliances Company (MSA)

The CW Sentry Chemical Warfare Agent Detector measures the presence of CWAs and select TICs. The wal...

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CW Sentry 3G

CW Sentry 3G

Mine Safety Appliances Company (MSA)

The CW Sentry 3G uses a surface acoustic wave (SAW) sensor array with a thermally modulated sample c...

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HazmatCAD Plus

HazmatCAD Plus

Mine Safety Appliances Company (MSA)

The HazmatCAD Plus combines the SAW and electrochemical sensors to monitor for CWAs and selected TIC...

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SAW MiniCAD mk II™ Miniature Chemical Agent Detector

SAW MiniCAD mk II™ Miniature Chemical Agent Detector

Mine Safety Appliances Company (MSA)

The SAW MiniCAD mk II Detector uses a pair of Surface Acoustic Wave (SAW) microsensors. SAW sensors ...

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Wireless SAW Temperature Sensor System

Wireless SAW Temperature Sensor System

SenGenuity

SenGenuity offers a passive (no batteries and no energy harvesting), wirelessly interrogated, SAW b...

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zNose Series

zNose Series

Electronic Sensor Technology, Inc.

The Model 4300 zNose is a fully portable GC/SAW that can detect and analyze all types of vapors and ...

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