HTO DISCRIMINATION
(MODEL 400SBDγC-HTO)便攜式氚檢測儀 SModel 400SBDγC
HTO識別（型號400SBDγC-HTO）便攜式氚測量儀
便攜式氚檢測儀 SModel 400SBDγC通過添加干燥柱，此款監測器將專門用于有其它輻射氣體和本底伽馬
在場的情況下測量HTO。干燥劑可以反復再生以便重新使用。
MEASUREMENT RANGE 1 – 19,999 μCi/m3, basic sensitivity of the order of 1 μCi/m3
測量范圍 1 – 19,999 μCi/m3，基本靈敏度1 μCi/m3
DISPLAY 0 – 19,999 digits, LCD panel meter
顯示 0 – 19,999 digits, LCD測量儀表
ACCURACY, SPAN ±10 % reading, ±1 μCi /m3, whichever is greater
精度，量程 讀數的±10 % ，±1 μCi /m3,取較大者
NOISE LEVEL ± 1 μCi/m3, 1 S.D. (10 second electronic time constant
噪音值 ± 1 μCi/m3, 1 S.D.（10秒電子時間常數）
ZERO STABILITY ±1 μCi /m3 long term
零點穩定 長期±1 μCi /m3
GAMMA COMPENSATION Four chambers in a cruciform pattern to reduce errors due to
external gamma radiation.
伽馬補償 十字排列四電離室減少因外部伽馬輻射影響產生錯誤
ALPHA PULSE SUPPRESSION a circuit provides recognition and cancellation of undesirable
noise spikes attributed to airborne radon
α脈沖抑制 電路識別并取消因氣溶膠氡存在而產生的不想要噪聲尖峰
RESPONSE RATE 30 seconds to reach 90% of final reading
響應率 30秒秒內儀表讀數將達到終值的90%，
ALARM (ACOUSTIC) 1. Ten position stepped attenuator set point for signal alarm
報警（聲音） 2 - 1,000 μCi/m3, steady tone. An OFF position is included.
十位階式減光板設定點用于信號報警，2 - 1,000 μCi/m3,穩定音，包
含OFF位置
2. Low flow produces an intermittent tone
低流產生間歇聲
3. Mute switch silences audible tone
開關關閉響音
ALARM (VISUAL) signal level: red LED 信號水平：紅LED
報警 （視頻） low flow: yellow LED, flashing 低流：黃LED
low battery: red LED 低電：紅LED
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