M90 Chemical Agent Detector

ęBrooke Clarke 2011
M90 Chemical Agent Detector


Background

Provides stand alone nerve and blister agent detection. 

There is a newer version called the M90-D1.

Description

Uses Ion Mobility Spectrometry (IMS, Wiki)) to determine the presence of toxic vapors.  There is an Americium-241 (Wiki) radioactive source that's used to ionize the incoming vapor so that the drift times of the various compounds can be measured.

Weight with battery 15 pounds. 
Dimensions: 11"L x 4"W x 11"H.

Components

M90 Detector Unit

Battery Case

M90-RH2 Remote Alarm Unit

M90-MP1 Main Power Supply

M90-BC Battery Charger (Ni-Cad only)

M90-MP1 Vehicle Power Supply

M90-IT2 Inlet Tube

M90-FT/S Filter Tool

M90-CC Communications Cable

Sample kit containing 2 stimulants (nerve & blister)

M90-CB Carrying Bag



M90 Chemical Agent
                  Detector


M90 Chemical Agent
                  Detector


M90 Chemical Agent
                  Detector


DC Power

Uses the same batteries as the PRC-25 or PRC-77, or the 257477BA 10 "D" cell Battery Adapter.
M90 p/n
Common p/n
Hours
M90-LB
BA-5598/U
16
M90-NB
Ni-Cad Battery ___???___
8
M90-MB
BA-4386
16

Patents

5047723 Method for detection of foreign matter contents in gases, Pertti Puumalainen, Sep 10, 1991, 324/464, 73/28.02, 324/71.3, 250/287, 324/459
Marked inside the M90.
Works in a way similar to an ionization smoke detector, but instead of just measuring the current in a single ionization chamber there are input and output chambers and the current is read in all of them to figure out what chemicals are in the gas.
7071465 Ion mobility spectrometry method and apparatus, H Henderson Hill, Jr., M Tam (Washington State U), Jul 4, 2006, 250/286 ; 250/281; 250/282; 250/288

Links

Temet - Environics -

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