检测测量
概要：
四个标准范围提供高分辨率和精确的液体电导率直接测量，从每米0.01到20万微微欧（pS/m） 能够被修改以提供更高的导电范围 测量样品温度的可选能力 传导性（KSLA）电池的机械设计允
四个标准范围提供高分辨率和精确的液体电导率直接测量，从每米0.01到20万微微欧（pS/m）
能够被修改以提供更高的导电范围
测量样品温度的可选能力
传导性（KSLA）电池的机械设计允许对测试样品体积（100毫升）进行精确的自我测量
电子线路自动采集并保持读数
大五位液晶显示器
所有电子电路的内部自检校准
易于拆卸和清洁导电电池
完全独立，由6个标准9伏电池供电，由低电量指示器监控
应用
许多应用要求对流体的“静止”电导率进行高精度测量，测量范围从小于1 pS/m到几千pS/m不等。“剩余”导电率是在电极间施加直流电压（在没有离子耗尽或极化的情况下，不带电流体的电阻的倒数）后，电流测量初始瞬间的导电率。精密电导率仪最初设计用于精确测量碳氢燃料的电导率。限制因素是流体的粘度和要测量的电导率水平。但是，可以测量其他液体的电导率，并且/或者可以由Emcee修改仪器的范围，以适应比所提供的标准更高的电导率值。
操作理论
在电池的两个同心电极之间引入比体积（100毫升）的试样。使用三轴电缆，电池连接到控制台中的敏感直流电流表，并在两个电极之间施加直流电压。由于电池的物理几何结构，电池常数是稳定的和可计算的。因此，合成的峰值电流很容易被转换，并以每米微微西门（pS/m）的形式进行数字显示，也称为电导单位（CU）。如ASTM标准试验方法D 4308中所定义，铜等于每米一皮西敏（1铜=1 pS/m）。电池采用的封闭技术排除了杂散电场对外部屏蔽的需要。
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EMCEE水分离注射器840-99-5944水分离注射器
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EMCEE水分离指数注射器840-99-5....水分离指数注射
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EMCEE水分离指数测定仪140-00-0...水分离指数测定...
EMCEE连接件001-90-7903 9-09....连接件
EMCEE聚结器840- 99 - 5946聚结器
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EMCEE传感器传感器
EMCEE测试仪 MODEL..测试仪
Four standard ranges provide high resolution and accurate direct measurement of electrical conductivity of fluids from.01 to 200,000 picosiemens per meter (pS/m)
Capable of being modified to provide higher conductivity ranges
Optional capability to measure sample temperature
Mechanical design of the Conductivity (KSLA) Cell allows accurate self measuring of the test sample volume (100 mL)
Electronic circuitry automatically samples and holds the reading
Large five digit liquid crystal display
Internal self check calibration of all electronic circuits
Ease of disassembly and cleaning of the Conductivity Cell
Completely self contained powered by 6 standard 9 volt batteries monitored by a low battery indicator
Applications
Many applications require highly accurate “rest” electrical conductivity measurements of fluids ranging in values from less than one pS/m to several thousand. “Rest” conductivity is the electrical conductivity at the initial instant of current measurement after a dc voltage is impressed between electrodes (reciprocal of the resistance of uncharged fluid in the absence of ionic depletion or polarization). The Precision Conductivity Meter was originally designed to precisely measure the conductivity of hydrocarbon fuels only. Limiting factors are the viscosity of the fluid and the conductivity level to be measured. However, electrical conductivity of other fluids can be measured and/or ranges of the instrument can be modified by Emcee to accommodate higher conductivity values than the standards offered.
Theory of Operation
A specific volume (100-mL) of test sample is introduced between the two concentric electrodes in the Cell. Using a triaxial cable, the Cell is connected to a sensitive dc ammeter in the Console and a dc voltage is applied between the two electrodes. Due to the physical geometry of the Cell, the Cell constant is stable and calculable. Thus, the resultant peak current is readily transformed and digitally displayed as picosiemens per meter (pS/m), also commonly known as conductivity units (CU). As defined in ASTM Standard Test Method D 4308, a CU is equal to a picosiemen per meter (1 CU = 1 pS/m). The enclosure technique employed in the Cell precludes the need for external screening from stray electrical fields.
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