Televac Active Digital Vacuum Sensors and Gauges
Televac有源数字真空计
The Fredericks Company’s Televac® vacuum pressure measurement brand designs and manufactures active gauges (also called analog or digital gauges) that combine Televac®’s passive gauges (also called digital vacuum sensors) and controlling electronics into one compact unit for pressure measurement.
Our active gauges cover the entire practical vacuum range from 10-11 Torr to 1000 Torr and feature bright OLED displays and easy to use touch controls, in addition to RS-485 communications, allowing the user to adjust settings such as measurement units, set points, and calibration directly through the unit’s display or remotely through digital communications.
These active gauges are compact, easy to use, and cost effective solutions for a wide range of vacuum measurement applications, the most common being heat treat and vacuum furnaces, vacuum distillation, thin film deposition, and semiconductor manufacturing equipment.
Looking for full-range vacuum measurement and not sure where to start? Check out our MX4A active convection gauge and our MX7B active cold cathode gauge (also sometimes called a CC gauge), when used together these units provide a measurement range of 10-8 Torr to 1000 Torr. Click here to learn more!
What’s an active vacuum gauge?
不同制造商的术语各不相同，但在Televac®，我们区分了被动式仪表和主动式仪表（查看我们的术语参考）。
A passive gauge (sometimes referred to as a digital vacuum sensor), such as our 2A thermocouple gauge or our 7B cold cathode gauge, needs controlling electronics to convert the electrical signal from the gauge into a vacuum measurement. This conversion can be done by a vacuum controller, which can control multiple gauges at a time, or by an active gauge, where the control electronics are integrated into an assembly which is directly attached to the passive gauge.
Active gauges are also sometimes called digital vacuum gauges or analog vacuum gauges, because they have a digital display and digital communications, along with an analog 0 to 10 V DC output.
主动式仪表与真空控制器--为什么我会选择一个而不是另一个？
真空控制器方案与有源仪表方案的主要区别在于控制电子装置（和显示器）的定位，以及真空控制器能够同时连接和显示多个无源仪表的读数。
With a vacuum controller, the passive gauges are connected by cables to the vacuum controller, allowing separation of the control electronics and digital vacuum sensors by anywhere from 10 feet to 300 feet. This is particularly useful for environments where radiation is present (electronics are quickly and damaged by radiation), or in applications where measurements must be displayed remotely or in a different location from the digital vacuum sensors.
有源真空计为某些应用提供了节省空间的机会（如真空炉的控制柜空间有限）。有源真空计还提供了真空控制器在校准方面有时缺乏的灵活性。
- NIST可追溯校准，无需归还电缆（意味着电缆无需从系统中移除）。
- 分开的低空压力表和高空压力表允许您以不同的校准间隔返回压力表。
- 这对于遵守NADCAP和AMS标准的终端用户来说尤其重要，因为在这些标准中，高真空计（如MX7B主动冷阴极计）必须每3个月校准一次，而粗真空计（如MX4A主动对流计）必须每年校准一次。
- 无真空控制器箱返回校准
- 大大节约了成本，减少了校准的停机时间和维护费用。
还不知道选择哪个主动仪表？以下是关于我们的主动式仪表的一些额外细节。
MX2A有源热电偶数字真空计
MX2A主动式热电偶真空计采用Televac®被动式2A热电偶真空计（有时也称为皮拉尼真空计），由于其灯丝设计和工作温度，是我们最坚固和抗污染的低真空计之一。这款紧凑的设备测量范围从10-4 Torr到1000 Torr，标配彩色OLED显示屏、触摸控制、RS-485通信以及对应其真空测量的0-10 V DC模拟输出。传感器更换快速简单，无需拆卸螺丝。
MX4A主动对流式数字真空计
MX4A主动式对流计利用Televac®被动式4A对流计（有时也称为皮拉尼真空计），测量范围从10-4Torr到1000 Torr，在其工作范围内提供±10%的精度。这款成本低、结构紧凑的设备具有彩色OLED显示屏、触摸式控制、RS-485通信、可编程设定点以及与测量值相对应的0-10 V DC模拟输出（也使其成为模拟真空计）。传感器更换快速简单，无需拆卸螺丝。
MX7B主动式冷阴极数字真空计
MX7B主动式冷阴极真空计采用Televac®被动式7B冷阴极真空计，测量范围从10-8Torr到10-3 Torr，与MX4A主动式对流真空计结合使用时，可提供全方位的真空测量。与同类竞争技术相比，我们的专利技术潘宁冷阴极技术具有卓越的抗污染能力。与我们的其他MX系列有源真空计一样，MX7B也配备了易读的OLED显示屏、触摸控制、RS-485和USB通信以及0-10 V直流模拟输出（也使其成为模拟真空计）。7B传感器拆卸快捷简单（只有一个螺丝），便于清洗或更换，以延长真空计的使用寿命。
MX7M主动式冷阴极数字真空计
MX7M有源冷阴极测量仪采用Televac®7M冷阴极电离测量仪，它的工作范围很宽，从5*10-11到1*10-2Torr。这是市场上唯一一款可清洗的冷阴极，测量范围为10-11Torr。全新的三层倒置磁控管设计，在提高线性度的同时，大大降低了杂散磁场，提高了真空计的整体精度。
CC-10有源宽量程数字和模拟真空计
CC-10有源宽量程压力表是一款宽量程有源压力表，采用双传感器技术，提供从10-9 Torr到990 Torr的无缝测量。晶体传感器可测量大气压至10-3Torr，而我们的专利双反磁控冷阴极压力表则用于测量10-2至10-9Torr。CC-10具有易于使用的前面板和LED显示屏，因此可以使用触摸控制或通过RS-485通信来设置选项。它还具有内置的设定点，并具有与真空读数相对应的0至10 V DC模拟输出（也使其成为模拟真空计）。
MX主动仪表以太网IP网关
正在寻找具有以太网/IP通信功能的数字真空计？新的MX有源真空计EthernetIP网关为最多4台Televac®MX有源真空计和1台电容式隔膜真空计（CDG）提供EthernetIP通信和电源连接。所有的MX有源压力表功能都可以通过EthernetIP访问，允许你将校准和改变气体类型等功能集成到PLC和HMI中。