Automatic Chemical Agent Alarm

Figure 4. The Automatic chemical agent alarm (ACADA) system, also known as GID-3...

Two boxes of plastic bags. Four M8A1 automatic chemical agent alarms. 

M8A1 Automatic Chemical Agent Alarm System 7-18... 

The M8A1 Automatic Chemical Agent Alarm electronically monitors for hazardous levels of nerve agent vapor. While sensitive, it is also prone to false positive responses due to high concentrations of various organic compormds including some pesticides and vehicle exhausts. Operators must be trained to use care in emplacing the device to minimize the chance of false alarms. 

For the U.S. Army, one requirement that was further supported by lessons learned from the 1967 Six-Day War was the need for an automatic field-alarm system. In 1968, the army solved the 2-decades-old problem by standardizing the M8 Portable Automatic Chemical Agent Alarm. The 4-year development effort covered the gap that had left U.S. soldiers vulnerable to a surprise nerve agent attack. The unit consisted of the M43 detector unit and the M42 alarm unit. Additional alarms could be connected.3... 

Fig. 16-29. The M8A1 Automatic Chemical Agent Alarm system consists of (a) the M43A1 Detector and (b) the M42 Alarm. Reprinted from Brletich NR, Waters MJ, Bowen GW, Tracy MF. Worldwide Chemical Detection Equipment Handbook. Edgewood, Md Chemical Warfare/ Chemical and Biological Defense Information Analysis Center October 1995 411. Photographs Courtesy of US Army Edgewood Research, Development, and Engineering Center, Aberdeen Proving Ground, Md.

M22 automatic chemical agent alarm (ACADA) IMS Fielded by U.S. military Smiths detection... 

MONITORING Available monitoring equipment for agent GD is the Automatic Chemical Agent Detector Alarm (ACADA), bubblers (GC method), and Chemical Agent Monitor (CAM). 

Automated sequencing systems, 72 510 Automatic Chemical Agent Detector and Alarm, 5 830-831 Automatic discharging suspended magnets, 75 438-439 Automatic dishwashing (ADW), 70 285 Automatic dishwashing detergents (ADDs), 70 274, 285... 

Automatic Chemical Agent Detection Alarm (ACADA-M22). The M22 is an advanced, pointsampling, chemical agent alarm system employing ion mobility spectrometry. It is designed to detect standard nerve and vesicant agents. 

Harden and Blyth exchange results and meet, agreeing to develt IMS jointly. Eventually, the responsibility of the U.S. mihtary was to produce a continuous air monitor known as the ACADA (automatic chemical agent detector and alarm), and the United Kingdom was to develt a personal monitor, eventually called CAM, the chemical agent monitor, a handheld IMS analyzer. 

Programs to develop IMS-based detectors and monitors for CWAs were undertaken with the support of defense establishments in several governments, notably the United Kingdom and United States. In the United States, research toward the development of an automatic chemical agent detector and alarm (ACADA) was begun but later discontinued. Efforts were resumed by Smiths Detection, and the result has been placed into service as the GID-3 and its later models, like the GID-M." The intention for this analyzer is to continuously monitor the presence of CWAs in ambient air and sound the alarm when threshold values are exceeded. The GID-3 and all other IMS-based analyzers are regarded as point sensors and cannot determine chemical compositions at distances greater than a few meters in the absence of breezes. 

ACADA GID-3 Automatic Chemical Agent Detection Alarm, M-22... 

U.S. Department of the Army, ATCD-N, MEMORANDUM, Subject Joint Service Operational Requirement (JSOR) for the Automatic Chemical Agent Detector Alarm (AC AD A), Headquarters U.S. Army Training and Doctrine Command, Fort Monroe,... 

Improved (Chemical Agent) Point Detection System (IPDS) This detection system is a new shipboard point detector and alarm that replaces the chemical Agent Point Detection System. This system can detect nerve and blister agent vapors at low levels and automatically provides an alarm to the ship. 

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