CW Sentry 3G
The CW Sentry 3G uses a surface acoustic wave (SAW) sensor array with a thermally modulated sample collector to detect CWAs and avoid false positives. To expand the CW Sentry’s capabilities, an electrochemical sensor array is added to detect TICs. Analysis data can be reported via RS232, Ethernet, fiber optic, or switch closures.
Availability: Commercially Available
| Manufacturer |
| Mine Safety Appliances Company (MSA) |
| Product Name |
| CW Sentry 3G |
| Detection Category |
| Chemical |
| Detection Principle |
| Sensors; |
| Detection Method |
| Electrochemical Detection;Surface Acoustic Wave Detection; |
| Application |
| Emergency Response; Gas Analysis; |
| Equipment Type |
| Instrument |
| Product Synopsis |
| The CW Sentry 3G uses a surface acoustic wave (SAW) sensor array with a thermally modulated sample collector to detect CWAs and avoid false positives. To expand the CW Sentry’s capabilities, an electrochemical sensor array is added to detect TICs. Analysis data can be reported via RS232, Ethernet, fiber optic, or switch closures. |
| Availability |
| Commercially Available |
| Technology Readiness Level (TRL) |
| 9 |
| User Feedback Sources |
| Indifferent/No user feedback |
| Dimensions |
| 24.75 × 19.5 × 9.5 in (630 x 500 x 240 mm) |
| Weight |
| <50 lbs.; 40 lbs (18 kg) |
| Power Requirements |
| AC/DC Line Power; 90 to 240 V, 50/60 Hz (60 W) |
| Transportability |
| Benchtop/Fixed |
| Ruggedness |
| Extreme Temperatures/Humidity; Designed to operate in a controlled environment. |
| Operating Conditions |
| -20 to 50°C (-4 to 122°F), 10 to 95% RH |
| Consumables |
| <$1,000/year; Particulate filters. Designed to be low maintenance. |
| Calibration Schedule |
| SAW sensors require no calibration. Electrochemical cells require recalibration every 6 months (sold as an option). |
| Suggested Routine Maintenance |
| Replace electrochemical sensor every 1 year |
| Communications Interface |
| RS232, Ethernet and fiber optic ports (optional). Designed to integrate with common surety and fire systems. |
| Expected Operational Life |
| Indefinite |
| Shelf Life |
| >5 years |
| Unit Cost |
| $28,968.00 |
| Maintenance Cost |
| Est. $350 to $500 per year |
| Tested For Chemical Agents |
| GA, GB, GD, GF, VX, HD, HN3 |
| Tested For ITF-25 TIC/TIMs |
| Hydrogen cyanide, phosgene, arsine, chlorine, diborane, fluorine, sulfur dioxide, ethylene oxide, cyanogen chloride |
| Sample Introduction |
| Vapor/Gas |
| Sensitivity/Detection Limits |
| ppm |
| Known Interferents/Inhibitors |
| SAW sensor have greater than 95% resistance to interferents. Electrochemical cells are less selective, depending on the selected cell. |
| Start Up Time (From Cold Start To Sample Ready) |
| < 5 minutes |
| Response Time (Sample Application To Output) |
| Continuous (<30 seconds); 30 seconds for SAW sensor; 5 seconds for electrochemical cell array |
| Total Run Time |
| Seconds |
| Alarm Capability |
| Audible and visual |
| Software Control |
| Yes |
| Other Operational Parameters |
| Simultaneous detection of nerve, blister, blood, and choke agents and class identification of TICs |
| Training Required |
| <1 week training |
| Training Available |
| 30 minutes training |
| Manuals Available |
| Operator’s manual |
| Warranties |
| 1 year parts and labor |
