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
• 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.