General Description
The ThreatShield-C™ is an automated chemical vapor detector designed to detect toxic industrial chemicals (TICs) and chemical warfare agents (CWAs) in fixed-site applications. Multiple ThreatShield-C™ detectors provide an integrated chemical warning system. The simple mounting characteristics, continuous operation, low maintenance requirements, and broad detection capabilities make the ThreatShield-C™ ideal for the protection of buildings, public venues and critical transportation hubs from chemical attack. High sensitivity and a low false alarm rate provide reliable Detect-to-Warn capability.
Technical Description
The ThreatShield-C™ detects toxic vapors by sampling ambient air through a proprietary inlet system. This inlet system selectively transfers TICs and CWAs into an analyte gas flow that sweeps target vapors through an ionization region and into the Differential Mobility Spectrometer-Ion Mobility Spectrometer (DMS-IMS2) sensor. The DMS acts as a pre-filter for subsequent IMS analysis, greatly reducing chemical background noise and the associated false alarm responses. Two IMS drift tubes allow the simultaneous detection of both positive and negative ions, broadening the types of compounds detected and decreasing the time for alarm response.
Evaluation Criteria
THROUGHPUT:
- 2 minutes or less for detection
- Multiple samples, multiple tests/sample per run
- 349-96 samples every 2 hours
- The system or device is currently fully automated
- Device or system is intended for multiple detection assays
- 0-1 solutions, buffer, eluents, and/or reagents
- 0 components
- Greater than 20 minutes is required for set-up
- Automatic detection
LOGISTICS:
- An afternoon of training and some technical skills required
- Approximately the size of a carry-on luggage suitcase
- Between 5 and 25 kg
- Wired connections are available
- System or device has 110V electrical requirement
OPERATIONS:
- Can be used from < -21°C to > 42°C (All temperatures)
- Performance is not influenced by relative humidity
- Greater than 3 years shelf life
- Greater than 10 years expected life
- Results can be viewed in real-time
- The system could be adapted to a fully autonomous system with some effort
- The system software is closed and not available for modification
- The system hardware is closed and not available for modification
DETECTION:
- This system does not test liquids
- > 1x10-3 mg/m3
- System currently can identify aerosolized chemical agent
- System currently can identify liquid chemical agent
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