OMA-300-in-Fiberglass-Enclosure

CVA-100

华伯指数分析仪


从天然气火把烟囱,CVA-100是用于监测碳氢化合物过程热值的理想仪器。

性能与使用

残氧分析简单直接
使用样品炉
固态TDL氧分析
无移动部件和耗品
一个统一的操作界面
中央HMI集中处理所有读数

可靠性与安全性

无人监管下全自动化运行
自动吹扫清零功能;可选远程自动化控制
固有的安全性设计
样品从不会与分析仪机箱接触或进入其内部
个性化设置各种报警及通信输出
4-20mA 模拟输出,MODBUS;Hart 等

The Wobbe Index (WI) expresses the heating value (known as calorific value) of gases used as fuels, taking into account the proportionality of calorific value to the specific gravity, or the density ratio between the given fuel gas and air. More precisely, the specific gravity is proportional to flow velocity through a constant orifice size at a constant pressure, and thus proportional to gas calorific value.

The CVA-100 puts continuous Wobbe Index monitoring and control in the hands of fuel gas producers, distributors, or anyone requiring WI readings for process optimization.

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监测原理

The CVA-100 uses VCSEL tunable diode laser technology to measure the residual oxygen value of sample combustion.

OMA在线过程分析仪

安全性能

The CVA-100 has an inherently safe design because the toxic sulfur-laden sample does not enter the analyzer enclosure. The sample circulates through the external flow cell, which receives the signal via fiber optic cables.

The primary purpose of the CVA-100 sample conditioning panel is to pyrolyze the sample (i.e. controlled combustion).

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  • 36”x36”x12” NEMA 4X carbon steel enclosure
  • Industrial pyrolyzing furnace
  • Two mass flow controllers for sample gas and air supply
  • Optional density transmitter
  • Oxygen sensor
  • Backpressure regulator to control the pressure of the gas flow
  • Two air-actuated 3-way valves
  • Includes 15 µm particulate filter and coalescing filter
  • Fast loop flow meter

以下技术参数以所有部件与样品系统均由AAI公司提供并且系统安装受AAI公司核准为前提。对于其它前提下的技术参数,请直接咨询AAI公司销售。

通用

测量原理 tunable diode laser spectroscopy
光源 VCSEL
Path Length Application-dependent
样品预处理 Complete system utilizes mass flow controllers to continuously mix sample gas with oxygen at a precise fuel:air ratio and pass the resultant mixture through a furnace tube heated to 1100 °C; after combustion, the sample is routed to the flow cell for residual oxygen measurement.
分析仪校准 一般情况下,出厂前由工厂通过认证的标准校准气校准;用户无需再次校准;系统的精确性由自动清零功能实现
读数确认 Simple verification with samples
HMI 工业控制器,配有LCD触摸屏及ECLIPSE™操作软件件
数据储存 16GB纯固态硬盘
运行环境
分析仪环境条件 室内,室外均可,无需分析小屋
环境温度 标准: 0 to 35 °C (32 to 95 °F)
可选: -20 to 55 °C (-4 to 131 °F)
为了避免热辐射,在太阳直射的环境下推荐将分析仪安装在遮阳罩下面。
样品温度 最高: 1300 °C (32 to 95 °F)
样品压力 最大: 10 bar abs.
电力要求
采样探头: 0-100 bar (0-1470 psig)
电力 85 to 264 VAC 47 to 63 Hz
电耗功率 45 瓦
输出
标准输出 一种被测物质对应一路4-20毫安模拟输出(最多可有三路;升级后,别的可选)
两路数字输出对应报警和预处理控制
可选输出 Modbus TCP/IP; RS-232; RS-485; Fieldbus; Profibus; HART;
外观特点
尺寸 分析仪:24" H x 20" W x 8" D (610 x 508 x 203 mm)
重量 分析仪:32 lbs. (15 kg)
机箱 标准: 壁挂式碳钢 NEMA 4 机箱

性能

精确度
(wobbe index)
45-50 range: ±0.2%
精确度
(CARI)
13-16 range: ±0.2%
分辨率< 0.02%
线性 Better than 1%
量程漂移 < 2% of measurement range
零点漂移< 1% per year

证书

以下为典型防爆证书,更多其它种类可选:

NEC Class I, Division 1, Groups C & D; AEx d IIB T3
CEC Class I, Division 1, Groups C & D; AEx d IIB T3
ATEX Exp II 2(2) GD
GOST Russian Gosstandart Pattern Approval
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