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工作原理: Jerome 651的核心分析部件是Jerome 631-X,后者是基于威氏桥平衡原理进行测量的。当Jerome 631-X运行时,其内置气泵会精确地抽取一定体积的空气样品通过传感器,此时,样品中的硫化氢会被传感器吸收,仪器记录硫化氢被吸收后电阻的相应变化,然后通过计算,得到样品中硫化氢的浓度。此外,系统内还配备了测试软件、数据采集和记录部件、风速风向监测仪、温度测试模块及无线电遥测功能等,数据下载简单便捷。
仪器应用: Jerome 651硫化氢在线监测系统是监测硫化氢排放问题的理想工具,可被安装在任何需要监测的地点进行长期监测,即使在极端恶劣的天气状况下也能实现无人监测。多台Jerome 651还可以联机,形成一个区域性的监测系统。主要应用于: ü 无线电监测 ü 环境空气分析 ü 法规遵循和许可 ü 有害恶臭气味监测 仪器性能: ü 用户可选时间加权平均值(TWA)的记录模式和电子邮件提醒服务 ü 为适合法规需求,增强了记录功能 ü 维护选项,方便用户进行系统验证和校正提醒 ü 地点选项,用户可以同时监测所有的站点,显示最后的结果和时间加权平均值(TWA)读数 ü 具有数据记录功能 ü 墙式或柱式安装 ü 界面友好的软件 ü 环境温度监测 ü 性能稳定的金箔传感器 ü 风速风向监测 ü 可设置警报数据点,同时具有电子邮件提醒服务 ü 内部温度稳定,提高了测试精确度 ü 在可测浓度范围内,传感器均能线性响应
技术参数
Detection Range: | 3 ppb (0.003 ppm) to 50 ppm | Resolution: | 0.001, 0.01, 0.1, and 1 ppm | Accuracy: | ±0.005 ppm at 0.05 ppm
±0.05 ppm at 0.5 ppm
±0.5 ppm at 5 ppm
±2 ppm at 25 ppm | Sample Intervals: | 1, 2, 5, 10, 15, 30, 60 or 120 minutes | Regeneration Intervals: | 6, 12, 24 and 48 hours | Flow Rate: | 150 mL/min | Operating Environment: | -40 to +55°C, non-explosive, 0-100% relative humidity | Results: | ppm, ppb | Data Storage Capacity: | 50,000 readings | Power Requirements (651 Unit): | 100-120 VAC, 50/60 Hz, 7 A or
210-240 VAC, 50/60 Hz, 4 A | Control Board Fuse: | Fast-acting IEC 1.6 A 250 V, 5 mm x 20 mm | Case Construction: | Polyester with insulation to reduce heat transfer | Battery (631-X Unit): | Rechargeable NiCad
6 hour life, charges in 14 hours
*only applicable when 631-X unit is not attached to 651 | Estimated Sensor Life: | 3 to 6 months depending on operating conditions | Display: | 8 digit alphanumeric LCD | Output: | Spectra Radio
Analog: 4-20 mA current loop | Dimensions: | 26″ W x 25″ H x 9″ D
(67 cm W x 64 cm H x 23 cm D) |
Weight: | 52 lbs. (24 kg) | Warranty: | 1 year, factory parts and labor except for 631-X sensor | Spectra Radio Modem SpecificationsFrequency: | 2.4 – 2.4835 GHz (2400 MHz)
49 selectable channels | Serial Interface: | RS-232 | Power Requirements: | 10-30 VDC, 450 mA | Operating Temperature: | -40°C to 75°C | Range: | Up to 4 miles (6.4 km) “line of sight.”
Longer distances may be obtainable
through use of a high gain antenna
or by using the optional Radio Repeater |
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