PRM-470系列便携式中子、γ线巡测仪分为PRM-470CG、PRM-470CN、PRM-470CGN三种型号：

      1、PRM-470CG只能检测γ线（PRM-470CG Hand Held Monitor(gamma only)），通过LED指示器闪光颜色识别γ源

      2、PRM-470CN只能检测中子线（PRM-470CN Hand Held Monitor(neutron only)），通过LED指示器闪光颜色识别中子源

      3、PRM-470CGN既能检测γ线又能检测中子线（PRM-470CGN Hand Held Monitor(gamma neutron)），通过LED指示器闪光颜色识别中子和γ源（γ源：红色LED；中子源：蓝色LED）。

        PRM-470系列便携式中子、γ线巡测仪是一台定位放射源和测量辐射场强度的手持式仪表。
它采用CMOS电路和可充电电池，在开机后自动进行状态检查和本底计数，用户可由前面板或一台个人电脑的RS-232串行口进行报警阈值设定，仪器上参数和计数情况由一个四行十六字的显示器提供给用户。
         PRM-470系列的仪器设有一个运动开关，在仪器移动时，自动由本底转向搜索模式。仪器在放置一段时间后将自动更新本底。 
         仪器可采用CPS、msv/hr、mr/hr显示。
          仪器有声光搜索功能，通过发声和闪光频率的增加，帮助定位放射源位置。LED指示器也通过闪光颜色识别中子和γ源（γ源：红色LED；中子源：蓝色LED）。 体积小、重量轻、功耗低使PRM-470系列仪器成为理想的巡测仪。 

用途：
●寻找特殊核材料(SNM）
●搜索车辆
●执法检查
● 应急响应
●供第一响应者使用
●危险品监控

技术规格

灵敏度：
按照ASTM美国材料试验学会标准C1237测试，本仪器可探测10g浓缩铀（HEU）或1gPu-239
探测器：
PM-470CG：一个3.5〞（高）×2.88〞（宽）×1.24〞（长）（8.8×7.2×3.1cm）有机塑料探测器，探测器体积约为12.6英寸3（206cc）
PM-470CN：一个He-3管，活性长度4〞（10.2cm），4个大气压
PM-470CGN：一个3.5〞（高）×2.88〞（宽）×1.24〞（长）（8.8×7.2×3.1cm）有机塑料闪烁体，探测器体积约为12.6英寸3（206cc），以及一个He-3管，活性长度4〞（10.2cm），4个大气压
报警水平：
由0.1-9.9σ，用户可调
报警指示：
声音报警和LED指示
计数时间：
γ搜索模式：0.05秒，计数0.4秒钟，动态平均
中子搜索模式：1秒钟计数时间
本底测量时间：用户自行调整
显示器：
字母LCD，4行×16字符串，带背景光
所需电源：
内置充电电池盒
尺寸：
PM-470CG：8〞（高）×5〞（宽）×3〞（长）（20×12.5×7.5cm）
PM-470CN：7.5〞（高）×5〞（宽）×2.25〞（长）（19×12.7×5.7cm）
重量：
带电池2.4磅（1.1kg）
工作温度：
32-100○F（0-38℃）
产地：TSA SYSTEMS, USA 

TSA's PRM-470C hand held series is a popular choice for locating radioactive sources and measuring intensity in the field. It uses low power CMOS electronics to provide extended operation from the rechargeable batteries. The versatile, easy to operate PRM-470CGN also features a self-test during power up, automatic background count and user determined alarm settings. Settings may be configured from the front panel, or from a personal computer using RS-232 communications. Count information and unit parameters are presented to the user on an alphanumeric 4 line, 16 character display.
The PRM-470C series utilizes a motion switch to automatically switch from background to search mode when the instrument is moved. After the instrument has been at rest for a preset duration, it will revert to background update. The unit may be programmed by the user to scale the display to CPS, μsv/hr or mR/hr.
This conversion is not energy compensated. Therefore, the value displayed is only an approximation of actual dose rate.
Due to popular demand, the PRM-470C series now features an audio and visual search/find mode to assist in locating radioactive sources. As detected counts increase, so does the frequency of the audio signal, helping to pinpoint the location of the radioactive source. LED indicators respond in similar fashion, flashing faster as counts increase. On gamma and neutron instruments, the LED indicators also assist to identify the type of radiation being detected (a red LED for gamma, and blue LED for neutron radiation).
TSA Systems offers the following line of PRM-470C series hand held monitors:
PRM-470CG - Gamma only search/find instrument
PRM-470CN - Neutron only search/find instrument
PRM-470CGN - Gamma & Neutron (simultaneous) search/find instrument
 
 
 
Applications include special nuclear material (SNM) searches at plant exits and material access areas, as well as contamination and background monitoring. The small size, light weight, and long battery life make it ideal for searching vehicles that require extended search times.
SENSITIVITY:
Will detect 10g 235U (HEU) or 1g239Pu when tested in accordance with ASTM Standard C 1237*.
 
. DETECTORS:
PM-470CG: One, 3.5"h x 2.88"w x 1.24"d (9 x 7 x 3cm) organic plastic scintillator detector; provides approximately 12.6 in3(206cc) of detector volume per instrument.
PM-470CN: Two, 3Hetubes, 4" (10cm) active, 4 ATM.
PM-470CGN: One, 3.5"h x 2.88"w x 1.24"d (9 x 7 x 3cm) organic plastic scintillator detector and one, 3Hetube, 4" (10cm) active, 4 ATM; provides approximately 12.6 in3(206cc) of detector volume per instrument.
 
ALARM LEVEL:
User configurable from 0.1 to 9.9 sigma
ALARM INDICATION:
Audible tone and LED
COUNT TIME:
Gamma search mode: 0.05 sec. count with 0.4 sec. moving average.
Neutron search mode: 1 sec. count time.
Background time: user configurable
DISPLAY:
Alphanumeric LCD, 4 lines x 16 characters, with backlight
POWER REQUIREMENTS:
Internal rechargeable battery pack
DIMENSIONS:
Box = 7.75"h x 4.75"w x 3.5"d (20 x 12 x 9cm)
Handle = 4.75"h x .75"w x 2.75"d (12 x 2 x 7cm)
WEIGHT:
2.4 lb (1.1kg) with batteries
ENVIRONMENTAL:
32° to 100°F (0° to 38°C)