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用途：
自动扫描铁道车辆车载物的γ辐射及中子，主要用于监测U235及Pu239的低能辐射。
构件：
①二根立柱；
②探测器，每根立柱上安装2个有机塑料闪烁探测器，每个探测器尺寸为48″（高）x12″（宽）x1.5″（厚）（121.9x30x3.8cm3），全系统总γ探测器体积为3456吋3（约55.6升），每个立柱上还装有4个Φ2″x36″（Φ5x91cm）He3中子探测器；
③一台SC-770控制器，带256K存储器，可至少存储3个月的数据，带有一个LCD（液 晶显示屏）4行x16字符，带有数字键盘和RS-232通讯端口；
④一台SCA-775单道分析仪；
⑤远红外位置探测器一个；
⑥提供声音和视觉报警指示；
⑦内置电池，可连续供电，供系统连续运行24小时；
外形尺寸：120″（高）x48″（宽）x10″（厚）（305x122x25.4cm）
重 量：每柱约600磅（273kg）
选 购 件：AM-270报警器，可提供远距（距监测器最大距离300呎-约90米）的声音和视觉报警。
产 地：美国TSA公司
其他说明：
车载物质放射性检测系统由检测探头（两个）及一个核素识别器（可选）、系统控制器、操作人员辐射防护仪（可选）、操作终端、红绿灯控制器（可选）、监视录像系统（可选）及应用软件（可选）组成。检测探头分别布置在卡车通道的两侧，检测出的信号送至系统控制器进行处理。若检测出有放射性物质时，在操作终端上可显示相应的报警信号、报警数据，并可对检测数据自动进行记录和打印，同时红绿灯控制器发出车辆禁止通行的信号。配备个人辐射监测仪器的专业人员根据核素识别器分析何种放射性物质，进行后续处理。
数据传送方式：车载物质放射性检测系统（配有网络通讯卡与EMS的网络相联，可将放射性检测装置的检测、报警信号通过EMS网络可与EMS的环保系统连接。）
TSA's train monitor TM-850 consists of two self-contained, weather resistant pillars placed on either side of the railroad track to be monitored.
Each pillar contains two plastic scintillator detectors, four neutron detector blocks, occupancy sensors, and an SCA-775 amplifier/controller. The master pillar also has a battery, power supply/battery charger and an SC-770 system controller.
These systems require two conduits, one to provide ac power to the battery charger, and one for the inter-pillar connections. A third conduit may be required to route signals to TSA's AM-270 alarm monitor.
TSA's train monitor is designed to automatically scan railroad traffic without the need for frequent calibration.
It is intended for applications where the relatively low energy emissions from 235U and 239Pu are the main concern.
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SENSITIVITY:
Preliminary
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DETECTORS:
Two, 48"h x 12"w x1.5"d (121.9 x 30x 3.8cm) organic plastic scintillator detectors per pillar; Eight, 2"diameter x 36" (5 x 91.4cm) He3 tubes per pillar
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FALSE ALARM RATES:
Typically less than 1 in 1,000 passages
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ALARM INDICATION:
Alarms are indicated by a red strobe light mounted on the master pillar. High and low alarms along with other foult conditions are indicated by an amber llight. Neutron alarm is indicated by a blue strobe lilght.
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DISPLAY:
Alphanumeric LCD, 4 lines x 16characters
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COMMUNICATIONS:
RS-232 and Ethernet communications capability
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DATA STORAGE:
256k bytes of battery backed RAM is used to store average hourly background data and alarm data. Under normal conditions the memory should be adequate to store data for at least 3 months of operation.
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POWER REQUIREMENTS :
90 - 250 Vac, 47 - 63 Hz, less than 100 VA128k bytes of flash memoryis used to store average hourly background data and alarm data. Under normal conditions the memory should be adequate to store data for at least 3 months of operation.
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BATTERY LIFE:
Greater than 24 hours of normal operation
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DIMENSIONS:
120"h x 48"w x 10"d (305 x 122 x 25.4cm)
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WEIGHT:
~ 600 lb (273kg) per pillar
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ENVIRONMENTAL:
-30° to 122°F (-34° to 50°C) Designed for outdoor use in most climates. For extreme conditions, optional heating/cooling is available.
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OPTIONAL COMPONENTS:
Heaters and Insulation, AM-270
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