XM21 REMOTE SENSING CHEMICAL AGENT ALARM RSCAL 28 NOV 90

File: 090496_jul96_decls49_0002.txt
Page: 0002
Total Pages: 7
Subject: XM21 REMOTE SENSING CHEMICAL AGENT ALARM RSCAL  28 NOV 90       

Box  ID: BX000420

Document Number:         96

Folder Title: HISTORIANS BACKGROUND MATERIAL FILES - G3 NBC MIS 2  OF 4                                       

Folder Seq #:          3

Unit: ARCENT      

Parent Organzation: CENTCOM     



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                                                                 AMCPM-NN-TM
                                                                 70B
                                                                 28 Nov 90

                                       INFORMATION PAPER


             SUWECT: XM21 Remote Sensing Chemical Agent Alarm
             1. Purpose: To provide information on XM21 Alarm Engineering
             Development (ED) hardware

             2. Facts.

                 a. The XK21 Remote Sensing chemical Agent Alarm is an
             automatic scanning, passive infrared (IR) sensor which detects
             nerve and blister agent vapor clouds based on changes in the
             infrared spectrum caused by the agent cloud. The XM21 Alarm is
             effective at line-of-sight distances out to five kilometers. It
             scans a 60 degree field of view (FOV), in seven discrete
             segments, within one minute. The XM21 presents no health or
             safety hazard to the operator or adjacent areas. The XM21 Alarm
             system consists of a detector, tripod, and a transit case.
             Independent power sources as well as vehicle power through the
             use of a NATO adapter may be used for the xm2l Alarm. The XM21
             Alarm will be used for point and area surveillance missions in
             both vehicle-mounted and tripod-mounted roles. The vehicle
             mount for the XM21 is being developed under the NBCRS program.
                 b. currently five of the (ED) test prototypes are available
             for Army use in Operation Desert Shield (ODS). Five ED systems
             were also provided to the U.S. Marine Corps (USMC) for their use
             in ODS. These systems were used in the development test program
             where a combined total of over 4500 hours of testing were
1 systems. All of the ED prototypes were
             inspected by the development contractor and then assembled into
             20 systems and 2 sets of spare/repair parts. Each service has a
             set of spare/repair parts for their five XM21s. Each ED XM21
             system includes a detector, transit case, tripod with
             accessories, battery cables for 4HN (24v) lead-acid batteries
             (NSN 6140-00-059-3528) and a NATO adapter for vehicle power.
                C. The XM21 Alarm has completed the technical and
             operational test program and is scheduled for a type
             classification/production decision in Apr 91. Technical testing
             was conducted at various U.S. Army Test and Evaluation Command
             sites while operational testing was conducted at Camp LeJeune,
             NC using USMC operator= a7'.Cl Ai:iLty aiia USMC: maintainers.



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