一(yi)、 產品(pin)用途和適用范圍
用途：
CD4多參(can)數氣體(ti)測定(ding)器(qi)（以(yi)下簡稱測定(ding)器(qi)）可(ke)同(tong)時連續檢測CH4、O2、CO、H2 ;S共4種氣體(ti)的濃度，并可超限報警，測定器(qi)采用8位微控制器(qi)作為(wei)控制單元，
采用(yong)高精度檢測(ce)元件，靈敏度高、響應速度快，屏幕采用(yong)寬溫范圍(wei)的128*64液晶，顯(xian)示清晰可靠。當環境中(zhong)檢測(ce)到(dao)(dao)待測(ce)氣體(ti)的濃度達到(dao)(dao)或超過或低于預置報(bao)警值時，
測(ce)定器立即發出(chu)聲光報警。
適用于：
CD4多參(can)數(shu)氣體測定器 總結構圖
1：液晶2：載體(ti)催(cui)化元件 3：功(gong)能(neng)鍵4：硫化氫傳(chuan)(chuan)感器5：一(yi)氧化碳傳(chuan)(chuan)感器 6：LED報警透明窗 7：氧氣傳(chuan)(chuan)感器 8：開(kai)機(ji)鍵 9：充電(dian)口
二(er)、 產品(pin)特(te)點
配(pei)備硅膠套，跌落(luo)性能好
三(san)、 技(ji)術(shu)原理(li)
測定器(qi)工(gong)作(zuo)原理(li)如下：環境中的被測氣體及溫濕(shi)度經過測定器(qi)陣列，轉化為數字信號，該信號送至MCU內部進行運算處(chu)理(li)和補償，最終顯示在240×64點(dian)陣液晶上(shang)。根據測定器(qi)的測量結果(guo)，測定器(qi)作(zuo)出相(xiang)(xiang)應(ying)的動(dong)作(zuo)，同時控制狀(zhuang)態指示、語音(yin)提示、電池電壓(ya)、報警輸(shu)出以及鍵盤輸(shu)入并(bing)做(zuo)出相(xiang)(xiang)應(ying)的處(chu)理(li)。
采用專用的(de)充電(dian)(dian)芯片，配合CPU全(quan)程(cheng)監控，并(bing)采用不間斷電(dian)(dian)源切換(huan)方式，實現系統的(de)斷電(dian)(dian)后(hou)連續運(yun)行。
四、 技術(shu)參數
O2：0.0～30.0%vol
報警設定值：四種氣體全量程之內均可設置報警點
報警精度：±1%（設定值）
響應時間：< 45 秒（H2S 流量 500ml/min,其它流量 200ml/min）
工作溫度范圍：0 ～ 40 ℃
儀器連續工作時間> 10 小時（非報警狀態）
重量≤300 克左右
錳酸鋰電池3.7V 1500mAh
★擁有制造計量許可證書。
Applications:
CD4 portable Multi-gas detector is an intrinsically safe and explosion-proof instrument and is designed to deter the gases.
It can simultaneously monitors up to four atmospheric hazards including carbon monoxide (CO), oxygen (O2),
combustible gas (%LEL), and hydrogen sulphide(H2S). Compact and lightweight, CD4 portable Multi-gas detector activates audible, visual and vibrating alarms in the event of a low or high alarm condition.
CD4 portable Multi-gas detector is unparalleled in its versatility, capability and overall value. Water-resistant line of portable gas detectors has transformed the market with its matchless array of features.
It is used at the underground coal mine and mine safety inspection mainly.
Certainly, it is also applied to fire fighting, confined space, chemical industry,
oil and all kinds of environment that needed to measure the hazardous and toxic gases
Technical specification:
Sensor | Catalytic combustion sensor (combustible gas);Electrochemical sensors (CO,O2,H2S) |
Measurement of Gas | combustible gas (CH4), carbon monoxide (CO),oxygen (O2), hydrogen sulfide (H2S) |
Range | CH4: 0~4.00%(v/v)； combustible gas 0-100%（LEL） |
O2: 0~25.0%VOL | |
CO: 0~1000ppm | |
H2S: 0~100ppm | |
Accuracy | CH4: +10% (1%LEL) |
O2: +0.7%VOL | |
CO: +5% | |
H2S: +5% | |
Resolution | CH4: 0.1%CH4 (1%LEL) |
O2: 0.1%VOL | |
CO: 1ppm | |
H2S: 1ppm | |
Alarms | Visual,audible(75 dB) |
Typical battery life | ≥10 hours |
Explosion protection | Exibd I |
Protection grade | IP54 |
External Dimensions/ Weight | 105（L）×56（W）×28（H） mm/250g |
Accessories:
battery, Carrying case and Operate guidebook
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