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AccuSense Chemical Recognition System from SEER Technology

Contact AFC for a demo of the AccuSense.



AccuSense gives First Responders the power of a laboratory-grade, gaseous chemical detection system in a field-portable unit. It’s like having the entire GC lab and technicians with you in a simple to use one button system. It is the perfect portable device for the detection, identification, and quantification of Toxic Industrial Chemicals (TICs).

AccuSense uses Dual-Hyphenated Gas Chromatography (DHGC) technology for the separation of chemicals and a proprietary thermal detection system to display concentration levels of multiple chemicals simultaneously. The chemicals and concentration levels are displayed via wireless links to a laptop computer. Identified chemicals and concentrations are automatically displayed relative to published IDLH (Immediately Dangerous to Life and Health) values and displayed on the screen for decision analysis.

Typical GC-based solutions require the use of an inert elute gas, such as argon or nitrogen. Products which rely on these “consumables” cannot be deployed for continuous field operations or hazardous areas where humans should not be exposed.

AccuSense solves the “consumables” problem by using internally conditioned ambient air as its elute gas source. This results in uncompromised continuous operation capabilities and lack of human intervention during unit deployment.

Each AccuSense chemical signature is a three dimensional “fingerprint” that is highly distinguishable from all other chemicals and from “confuser” chemicals which create “false positives/negatives.” The patented detection and identification systems of AccuSense are a technology breakthrough for the industry, giving superior accuracy compared to competitive products and solutions.

In the chemical detection business, it is critical to detect, identify, and in the case of AccuSense, provide the concentration levels of the chemicals present. All of this information needs to be provided without the appearance of false positives or false negatives. A false positive is a case in which a device indicates that a chemical is present when in fact it is not, while a false negative is a case in which a devices indicates that no chemicals are present when in fact they are. Unnecessary response to chemical detectors that are reporting false positives is costly and time-consuming, adding to the overall cost of the instruments. The cost of a false-positive reading in an area such as an airport or convention center can be extremely costly due to the unnecessary evacuation of the public and deployment of a HAZMAT team. Continual response to false-positives is unacceptable and the ability of AccuSense to distinguish between chemicals of interest and confusers will significantly limit the cost of unnecessary response actions.

SEER has created a unique state-of-the-art chemical separation and classification algorithm based partly on an artificial neural network algorithm. Because the neural network is trained only on known valid chemical signatures validated against an Agilent™ mass spectrometer, it is inherently robust with respect The SEER “Picasso” is actually a 3D surface plot produced with Matlab™ scientific software on the Cray™ supercomputer. It is used as a quick visual check of the performance of a trained neural network chemical separation algorithm.

SEERID is an intuitive, easy to use software platform that provides chemical concentration results for multiple units back to one command post outside of the release area.

The color-coded data sets that automatically refresh every three minutes alert the user when concentrations approaching or exceeding IDLH values exist. The operator can then link to the National Institute of Occupational Safety and Health (NIOSH) Pocket Guide to Chemical Hazards to procure additional information about specific chemicals such as exposure limits, chemical properties, and personal protection techniques.


  • Industrial
  • Transportaton – Mass transit systems including subways, airports and train stations
  • HazMat
  • Shipping
  • Law Enforcement
  • Perimeter Protection
  • Sports Venues


Technology Dual-Hyphenated Gas Chromatography (DHGC)
Sampling Continuous air monitoring of chemicals with boiling points between 50°C to 115°C
Gas Sample Introduction Volumetric Collection @ 180ml/min via internal sample pump
Detected Toxic Industrial Chemicals (TICs)
Threats VOCs with a PID connection option. CWM & Radiation with IMS and RAD detector option
Start Up Time 20 – 45 minutes
Calibration Advanced Environmental Calibration (AEC) with Environmental Calibration Bypass Mode
Carrier Gas Ambient Air
Software SEERID Decision Software
Platform PC with MS Windows NET 3.5 SP2, WIN
Interface Identification, Concentration & % IDLH
NIOSH Pocket Guide
HazMat IQ Decision Guide
Data Reporting with date and time stamp
Unit Operational Information
Analysis Date Recorded
Graphical Chemical Signature
AccuSense Resident HyperSignature Database
Connectivity 900 MHz radio, Network TC/IP Connection
Alarm Display Green, Yellow and Red LED Warning
Power Rechargeable Li-Ion Battery & Line AC 85-250V
Run Time 8 hour internal, plus 8 hour removable
Decon Exterior: Wet wash with bleach and water
Interior: System purge to evacuate contaminates
Operating Temperatures -20°F to 104°F
Humidity 10-95%
Size 17″ x 4.5″ x 11″
Weight 23 pounds
Certification EN ISO 12100:2010, EN ISO 12100:2010, CE


Ordering Information

For pricing, please call AFC International at 1-800-952-3293, 219-987-6825 or fax 219-987-6826 or email


AccuSense Chemical Recognition System literature

Using the AccuSense during a Lithium Battery Fire

List of chemicals detechable with the AccuSense


AccuSense Origins literature

AccuSense Value Proposition literature



Chemical List Highlighted

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