Metal Oxide Semiconductor Sensors

Semiconductor gas sensors combine thermal, chemical and electrical effects. A sensing layer, composed of SnO2, is heated by a heater structure. While chemicals are absorbed on its surface, the electrical conductivity changes locally; leading to a change in the electrical resistance. Analyzing the modifications of the resistance over time, compared with reference values, gives information about variable gas concentrations.

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Availability: Commercially Available

figarousa@figarosensor.com
+1 847 832 1701
121 South Wilke Road Suite 300
Arlington Height, IL 60005
www.figarosensor.com/
Manufacturer
Figaro Engineering
Product Name
Metal Oxide Semiconductor Sensors
Detection Category
Chemical
Detection Principle
Sensors;
Detection Method
Metal Oxide Semiconductor;
Application
Gas Analysis;
Equipment Type
Sensor
Product Synopsis
Semiconductor gas sensors combine thermal, chemical and electrical effects. A sensing layer, composed of SnO2, is heated by a heater structure. While chemicals are absorbed on its surface, the electrical conductivity changes locally; leading to a change in the electrical resistance. Analyzing the modifications of the resistance over time, compared with reference values, gives information about variable gas concentrations.
Availability
Commercially Available
Technology Readiness Level (TRL)
9
User Feedback Sources
Indifferent/No user feedback
Dimensions
0.67 x 0.87 in (17 x 22 mm)
Weight
<1 lb.; 0.07 oz (2 grams)
Power Requirements
AC/DC Line Power; 5 V
Transportability
Pocket Size
Ruggedness
None; Needs protection from moisture and dust
Operating Conditions
-30 to 85°C, 5 to 95% RH (non-condensing)
Calibration Schedule
Yes, by using the appropriate target gas concentrations
Communications Interface
Yes
Shelf Life
<5 years; 2 years
Unit Cost
$16.00
Other Chemical Targets
Sensor are available to measure: LP, propane, natural gas, methane, hydrogen, combustible gas, carbon monoxide, ammonia, hydrogen sulfide, alcohol, toluene, xylene, VOCs, R-22, R-113, R-21, R-134a, carbon dioxide, gas exhaust, diesel exhaust, oxygen
Sample Introduction
Vapor/Gas
Sensitivity/Detection Limits
ppm
Known Interferents/Inhibitors
Easily poisoned. Avoid exposure to organic solvents, ammonia, silicone vapors, freezing, HMDS or cigarette smoke
Start Up Time (From Cold Start To Sample Ready)
Pre-heating time unknown
Response Time (Sample Application To Output)
<5 minutes
Alarm Capability
Yes
Software Control
Dependent on circuit platform used
Training Required
<1 week training
Manuals Available
Yes
Warranties
Yes
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