HTO DISCRIMINATION
(MODEL 400SBDγC-HTO)
HTO识别（型号400SBDγC-HTO）便携式氚测量仪
通过添加干燥柱，此款监测器将专门用于有其它辐射气体和本底伽马
在场的情况下测量HTO。干燥剂可以反复再生以便重新使用。
MEASUREMENT RANGE 1 – 19,999 μCi/m3, basic sensitivity of the order of 1 μCi/m3
测量范围 1 – 19,999 μCi/m3，基本灵敏度1 μCi/m3
DISPLAY 0 – 19,999 digits, LCD panel meter
显示 0 – 19,999 digits, LCD测量仪表
ACCURACY, SPAN ±10 % reading, ±1 μCi /m3, whichever is greater
精度，量程 读数的±10 % ，±1 μCi /m3,取较大者
NOISE LEVEL ± 1 μCi/m3, 1 S.D. (10 second electronic time constant
噪音值 ± 1 μCi/m3, 1 S.D.（10秒电子时间常数）
ZERO STABILITY ±1 μCi /m3 long term
零点稳定 长期±1 μCi /m3
GAMMA COMPENSATION Four chambers in a cruciform pattern to reduce errors due to
external gamma radiation.
伽马补偿 十字排列四电离室减少因外部伽马辐射影响产生错误
ALPHA PULSE SUPPRESSION a circuit provides recognition and cancellation of undesirable
noise spikes attributed to airborne radon
α脉冲抑制 电路识别并取消因气溶胶氡存在而产生的不想要噪声尖峰
RESPONSE RATE 30 seconds to reach 90% of final reading
响应率 30秒秒内仪表读数将达到终值的90%，
ALARM (ACOUSTIC) 1. Ten position stepped attenuator set point for signal alarm
报警（声音） 2 - 1,000 μCi/m3, steady tone. An OFF position is included.
十位阶式减光板设定点用于信号报警，2 - 1,000 μCi/m3,稳定音，包
含OFF位置
2. Low flow produces an intermittent tone
低流产生间歇声
3. Mute switch silences audible tone
*开关关闭响音
ALARM (VISUAL) signal level: red LED 信号水平：红LED
报警 （视频） low flow: yellow LED, flashing 低流：黄LED
low battery: red LED 低电：红LED
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