Televac AN 3028: Televac® 模拟器。

宗旨

Simulators mimic the electrical signal from a typical vacuum gauge at various vacuum levels/pressures. Their most common use is troubleshooting vacuum systems and identifying potential setup issues. This application note outlines simulators offered by Televac® and how they can be used.

Simulator Types

Televac® offers simulators for many of our most popular vacuum sensors. These simulators come in two different types:

1.零点模拟器模拟典型的真空计输出在0micons/mTorr时的情况。

2.多点模拟器模拟典型真空表在多个压力下的输出。

现有的模拟器如下。

传感器型号 模拟压力 零件编号
2A 热电偶 零(红线,0微米)
3点(0、100、1000微米)
2-2100-237
2-2100-242
2A微型热电偶 零(红线,0微米)
3点(0、100、1000微米)
2-2100-240
2-2100-241
4A对流 零(红线,0微米)
3点(0、1、760托尔)
2-2119-000
2-2119-003
7B 潘宁磁控管 2分(10-3, 10-5Torr)
4分(10-3, 10-4, 10-5, 10-6Torr)
2-2100-93
2-2100-108
7E双反磁控管 2分(10-2, 10-5Torr) 2-2142-000
7F双反磁控管 2分(10-3, 10-5Torr) 2-2145-000

Using Simulators to Troubleshoot

If the vacuum readings on your Televac® controller are incorrect, it can be challenging to determine which part of the setup is causing the issue. Several troubleshooting methods are described below:

1.因为模拟器代表了典型真空计的电信号,所以可以用来测试是否是真空计引起的问题。为了测试这一点,用模拟器替换真空计,看看控制器的输出是否在合理的公差范围内。如果不是,可能需要更换真空计。

2.我们几乎所有的冷阴极压力表都可以清洗,这样可以解决这些压力表的任何问题。更多信息和清洁程序请参见应用说明3002(7B和7E)和应用说明3004(7FC和7FCS)。

3.如果更换压力表不能解决问题,也可以用模拟器来测试其他系统部件,而不拉真空。例如,可以用不同的电缆与模拟器一起测试,看它是否能解决问题读数。

A Note on Using Simulators For Calibration

Calibration is a common step in the set up of a vacuum controller. It ensures that the controller readings with a corresponding vacuum gauge are in tolerance. Simulators don’t account for gauge to gauge variation because a simulator is representative of a typical vacuum gauge. Therefore, calibrating with a simulator can cause incorrect readings when a vacuum gauge is connected. Because of this, Televac® does not recommend attempting to calibrate a vacuum controller using a simulator.

For more information on Televac®’s recommended practices for field calibration of vacuum systems, please see Application Note 3015.

相关产品

真空测量仪模拟器

Televac® Simulators

• Sensor simulators are designed to electrically simulate Televac sensors at specific pressures. These units allow for simple troubleshooting of issues relating to cabling, sensors, and electronics.