| 详细介绍： GT-WD2200点型气体检测仪GT-WD2200
GT-WD2200点型气体检测仪GT-WD2200
1 概述
GT-WD2200点型气体探测器（以下简称探测器）是我公司生产的新型气体检测仪器，本机采用高性能气敏元器件和微控制器技术，结合精良SMD工艺制造而成，具有良好的重复性和温湿度特性以及使用寿命长、操作方便等优点，适用于工业环境中检测气体浓度。
本探测器采用三线制4～20mA的电流信号，具有传输距离远、抗干扰性能好等特点。
本探测器广泛应用于石油、石化行业的炼油厂、化工厂、冶金行业、电力行业等可能产生对人体有害气体场所的气体检测。
主要特点：
4～20mA标准模拟量输出
2个开关量无源触点输出
免标定智能传感器模组
安全的免开盖红外遥控操作
自带声、光报警
隔爆式设计，适用于1区和2区危险场所
1.1 本产品设计、制造、检定遵守以下国家标准：
GB3836.1-2010《爆炸性环境 第1部分：设备 通用要求》
GB3836.2-2010《爆炸性环境 第2部分：由隔爆外壳“d”保护的设备》
GB15322.1-2003《可燃气体探测器第一部分：测量范围为 0～100％LEL的点型可燃气体探测器》
JJG693-2011《可燃气体检测报警器检定规程》
GB4208-2008 《外壳防护等级（IP 代码）》
GB/T13384-92《机电产品包装应用技术条件》
1.2 本产品经国家法定权威机关审查及检验，并通过防爆合格检验。
2 主要技术指标
*µmol/mol（备注：国外常用PPM替代表示）
*其他气体可咨询经销商或制造商
采样方式：自然扩散；
工作电压：DC 24V±6V；
功 耗：≤3W；
工作方式：连续检测；
全量程偏差：≤±3%LEL（可燃气体） ≤±5%F.S（毒性气体）
显示方式：液晶显示气体浓度和探测器状态；
状态指示：黄色指示故障、红色指示浓度报警、绿色指示正常工作；
操作方式：红外遥控；
响应时间（t90）：可燃气体≤30s 毒性气体≤60s；
工作温度：-40℃～70℃（催化燃烧式传感器）/-20℃～50℃（电化学式传感器）；
工作湿度：≤95%RH（非冷凝）；
防爆方式：隔爆型；
防爆等级：Ex d mb ⅡC T6 Gb；
防护等级：IP65；
环境压力：86kPa～106kPa；
输出信号：4～20mA 三线制；
防爆连接螺纹：G3/4（内管螺纹）；
使用电缆：≥1.5 mm2×3 屏蔽电缆线，电缆外径要求在6mm～9mm之间；
探测器与主机间最大距离：≤1000m；
传感器使用寿命：催化燃烧三年，电化学式二年（与具体使用环境有关）；
产品尺寸：210 mm×220 mm×105 mm；
重量：约2Kg。
1 Overview
GT-WD2200 type gas detector (hereinafter referred to as the detector) is a new type of gas company production andtesting instruments, the machine adopts high performancegas sensing components and micro controller technology,combined with sophisticated SMD technology and manufacture, has the advantages of good repeatability andtemperature and humidity characteristics and long service life, convenient operation, suitable for industrialenvironment in the detection of gas concentration.
The detector adopts three wire 4 ~ 20mA current signal,has a transmission distance, good anti-jamming performance characteristics.
The detectors are widely used in petroleum, petrochemicalindustry, refinery, chemical plant, metallurgical industry,power industry may produce harmful gas place gas detection.
Main features:
4 - 20mA standard analog output
The 2 switch passive contact output
The calibration free intelligent sensor module
Opened free cover infrared remote control operation safety
With sound, light alarm
Explosion isolation type design, can be used in zone 1 andzone 2 dangerous places
1.1 This product design, manufacturing, test follow national standards:
GB3836.1-2010 "explosive atmospheres - part first:equipment - General requirements"
GB3836.2-2010 "explosive atmospheres - Part second: by the flameproof enclosure" d "protection equipment"
GB15322.1-2003 "combustible gas detector part 1:measurement range of 0 ~ 100%LEL point typecombustible gas detector"
JJG693-2011 "flammable gas detection alarm verification regulation"
GB4208-2008 "shell protection grade (IP code)"
GB/T13384-92 "mechanical and electrical productspackaging technology"
1.2 this product by the national authority, authority for review and inspection, and the explosionproof qualificationtest.
2 main technical indexes
* µ mol/mol (Note: foreign common PPM alternative representation)
* other gases can consult the dealer or manufacturer
Sampling method: natural diffusion;
Working voltage: DC 24V ± 6V;
Power consumption: ≤ 3W;
Working mode: continuous detection;
Full scale deviation: ≤ ± 3%LEL (gas) ≤ ± 5%F.S (a toxic gas)
Display mode: liquid crystal display gas concentration anddetector status;
Status indication: yellow indicator fault, red indicatorconcentration alarm, green indicating normal;
Mode of operation: infrared remote control;
Response time (T90): combustible gas, toxic gas ≤ 60s ≤ 30s;
Operating temperature: -40 ℃ ~ 70 ℃ (catalysis combustion sensor) /-20 ~ 50 ℃ (electrochemical sensor);
Humidity: ≤ 95%RH (non condensing);
Methods: Flameproof explosion-proof;
Explosion-proof grade: Ex D MB C T6 Gb;
Protection grade: IP65;
Environmental pressure: 86kPa ~ 106kPa;
Output: 4 ~ 20mA three wire system;
Explosion proof connecting thread: G3/4 (internal thread);
The use of cable: ≥ 1.5 mm2 × 3 shielded cable, cable diameter in 6mm ~ 9mm;
The maximum distance between the detector and the host:≤ 1000m;
Service life of the sensor: the catalytic combustion of three years, two years (electrochemical type associated with the specific use of the environment);
Product size: 210 mm × 220 mm × 105 mm;
Weight: about 2Kg.
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