SBG-200 Wall-Mounted Gas Monitor
A semi-conductor is applied to a non-conductor between two electrodes. The system is heated to a point where the gas of interest will cause a change in the conductivity of the semi-conductor. As the concentration of the gas of interest increases, the resistance of the semi-conductor drops. A relay contact is provided to allow the SBG-200 to connect with a central alarm system or turn on emergency apparatus.
Availability: Commercially Available
| Manufacturer |
| American Gas & Chemical Company |
| Product Name |
| SBG-200 Wall-Mounted Gas Monitor |
| Detection Category |
| Chemical |
| Detection Principle |
| Sensors; |
| Detection Method |
| Electrochemical Detection ; |
| Application |
| Emergency Response; Gas Analysis; |
| Equipment Type |
| Sensor |
| Product Synopsis |
| A semi-conductor is applied to a non-conductor between two electrodes. The system is heated to a point where the gas of interest will cause a change in the conductivity of the semi-conductor. As the concentration of the gas of interest increases, the resistance of the semi-conductor drops. A relay contact is provided to allow the SBG-200 to connect with a central alarm system or turn on emergency apparatus. |
| Availability |
| Commercially Available |
| Technology Readiness Level (TRL) |
| 9 |
| User Feedback Sources |
| Indifferent/No user feedback |
| Dimensions |
| 6.75 x 4.875 x 2 in (172 x 124 x 51 mm) |
| Weight |
| <5 lbs.; 2 lbs (.91 kg) |
| Power Requirements |
| AC/DC Line Power; Can be ordered to plug into a standard 110 V outlet or ordered for 12/24 VDC. |
| Transportability |
| Benchtop/Fixed |
| Operating Conditions |
| 50-90°F, 30-70% RH |
| Consumables |
| <$1,000/year; Calibration gas |
| Calibration Schedule |
| Yes, initial calibration is used to set the alarm level performed by the manufacturer |
| Data Analysis Support Equipment |
| Optional chart recorder and sensor extension wire. Also optional sound and light alarm. |
| Communications Interface |
| Relay Circuit |
| Unit Cost |
| $945.00 |
| Maintenance Cost |
| Calibration cost ~$100 |
| Other Chemical Targets |
| Yes, see table at the bottom of survey for list of commonly detected chemicals with detection levels |
| Sample Introduction |
| Vapor/Gas |
| Known Interferents/Inhibitors |
| Electrochemical cells are vulnerable to organic solvents. Catalytic beads are poisoned by silicones, fluorides and chlorides. IR has little to no interferences, but cannot see hydrogen. |
| Start Up Time (From Cold Start To Sample Ready) |
| If powered off for a long time, the sensor oxidizes, it will take a full hour to warm up. If used regularly, it will warm up within seconds. |
| Response Time (Sample Application To Output) |
| Continuous (<30 seconds); 12 seconds (the alarm activates after reading an alarm condition for 12 seconds) |
| Alarm Capability |
| Yes, sound and light alarm |
| Training Required |
| <1 day training |
| Training Available |
| Yes |
| Manuals Available |
| Yes |
| Warranties |
| Yea, 1 year limited |
