6517B静电计

吉时利5位半6517B静电计/高阻表提供的精 度和灵敏度指标高于其他同类型仪表。它还具有 完备的功能，使测量高阻和绝缘材料电阻率变得 简单。6517B具有425读数/秒的测试速率，比同 类型的静电计快很多，可以提供快速、简易的弱 电流测量能力测量弱电流。

主要特点:

• 电阻测量可达1016 Ω

• 电流测量范围1fA - 20mA

• 最小电流量程输入端压降<20μV

• 200TΩ 输入阻抗

• <3fA 偏置电流

• 测试速率高达425 rdgs/s

• 噪声0.75fA p-p

• 内置±1kV电压源

• 的高电阻测量电压反接方法

• 可选的插件式扫描卡

出众的性能指标

半机架型6517B静电计/高阻表具有特殊的低 电流输入放大器，其输入偏置电流<3fA，噪声仅 0.75fA p-p (峰-峰) ，输入端压降<20μV。对于 接近理想的电路负载，其电压和电阻测量的输入 阻抗是200TΩ。这些性能指标确保物理、光学、纳米技术和材料科学等研究领域低电流和高阻抗电压、电阻和电荷测量所需的准确 度和灵敏度。内置±1kV的电压源具有扫描能力，从而简化漏流测试、击穿电压测试 和电阻测试，以及绝缘材料的体电阻率(Ω-cm) 及表面电阻率(Ω/square) 的测量。

测量范围宽

6517B型静电计/高阻表具有全自动量程，超过电流、电阻、电压和电荷测量满量程：
• 电流测量范围：1fA - 20mA
• 电压测量范围：10μV - 200V
• 电阻测量范围：50Ω - 1016Ω
• 电荷测量范围：10fC - 2μC

改进的高灵敏度测量

许多测试应用要求测量高级别材料的电阻率（面电阻率和体电阻率）。传统测 量方法是对样本施加足够高的电压，测量流经样本的电流，然后利用欧姆定律(R=V /I)计算其电阻。虽然高阻材料和器件产生很小的电流，很难准确进行测量，但利用 吉时利静电计和皮安计则可以成功地进行这种测量。

即使利用高精度仪器，材料中固有的背景电流使得进行准确测量较为 困难。由于压电效应、电容效应和偏振效应，绝缘材料、聚合物和塑料通 常都显示出背景电流。这些背景电流一般等于或大于施加电压产生的电流。 在这些情况下，其测量结果往往是不稳定的，生成不准确的电阻或电阻率 读数甚至错误的负值。吉时利6517B型静电计/高阻表旨在解决这些问题， 并为各种材料和元件提供一致、可重复和精准的测量，特别是与8009型电 阻测试夹具一起使用时。

The precision and sensitivity of the giselli 5-bit half-6517b electrometer/high-resistance meter is higher than other instruments of the same type. It also has complete functions, making it easy to measure high resistance and insulation material resistivity. The 6517B has a test rate of 425 readings per second, which is much faster than the same type of electrometer and provides fast and easy low-current measurement capability.

Main features:

Resistance measurement of up to 1016 Ω

The current measurement range is 1fa-20ma

Minimum current range input voltage drop <20 V

200 t Ω input impedance

<3fA bias current

Test rate as high as 425 RDGS /s

Noise fA p - 0.75 p

Built-in 1kV voltage source

Unique high resistance measurement voltage reverse connection method

Optional plug-in scan card

Superior performance metrics

The semi-chassis 6517B electrometer/high-resistance meter has a special low-current input amplifier with input bias current <3fA, noise only 0.75fA p-p (peak-to-peak), and input voltage drop <20 V. For close to ideal circuit load, the voltage and the resistance measurement of input impedance is 200 t Ω. These performance indicators ensure the accuracy and sensitivity required for low current and high impedance voltage, resistance and charge measurements in the fields of physics, optics, nanotechnology and materials science. Built-in plus or minus 1 kv voltage source with scanning capabilities, so as to simplify the leakage flow testing, testing and breakdown voltage resistance test, and the volume resistivity of insulating materials (Ω - cm) and surface resistivity (Ω/square) measurement.

Range of measurement

Type 6517B electrometer/high-resistance meter has a fully automatic range that exceeds the full range for current, resistance, voltage and charge measurements:

• current measurement range: 1fa-20ma

• voltage measurement range: 10 v-200v

• resistance measurement range: Ω Ω 50-1016

• charge measurement range: 10fc-2 C

Improved high sensitivity measurement

Many test applications require the measurement of the resistivity (surface and volume resistivity) of high grade materials. The traditional measurement method is to apply a high enough voltage to the sample, measure the current flowing through the sample, and then calculate its resistance using ohm's law (R=V /I). Although very small currents are generated by high-resistance materials and devices and are difficult to measure accurately, such measurements can be made successfully with the keithley electrometer and picoammeter.

Even with high-precision instruments, the background current inherent in the material makes accurate measurements difficult. Because of piezoelectric effect, capacitance effect and polarization effect, insulating materials, polymers and plastics usually show background current. These background currents are generally equal to or greater than the current produced by applying a voltage. In these cases, the measurement results are often unstable, generating inaccurate resistance or resistivity readings or even erroneous negative values. The keesley 6517B electrometer/high resistance meter is designed to address these issues and provide consistent, repeatable and accurate measurements for a variety of materials and components, especially when used with the type 8009 resistance test fixture.