在许多领域，压力可能会对生产和工业成果以及产品质量产生重大影响。这使得对其进行测量的能力变得更加重要。然而，由于测量结果并非总能被电子仪器所使用，因此可以使用一个差压传感器。压差测量涉及不同压力水平之间的差异。数值由差压变送器进行转换。例如，它们可以转换成4-20 mA或0-10 V的范围。
差压压力变送器功能：
- 自动调零
- 简单集成能力
- 压差测量
- 在某些情况下，配备湿度和温度测量仪
德图差压变送器及其功能
德图差压变送器产品一览
测量压差的压力变送器
应用于工业领域的差压变送器
可以进行流量计算的差压变送器
适用于洁净室的差压变送器
有必要深入讨论该主题，以确保有效使用压差变送器。无论被测压力类型如何，压差变送器都可以提供电气测量并转换成具体范围。有各种不同的效应可以支持和影响测量。这意味着测量仪可以采用不同的原理工作，具体取决于制造商。所采用的要素包括电阻变化，电压变化或电容变化。
有针对不同压力类型的差压压力变送器。在这方面有一种特别常见的差压变送器设计。对于该种版本来说，需要测量两个不同压力水平的差异。为了能够做到这一点，存在对传感器具有影响的不同压力。其结果就是数据信号可以4-20 mA 或以 0-10 V显示。原则上，还可使用压差变送器测量和配置相对压力。
差压传感器的应用领域是一个令人感兴趣的话题。这里有许多不同的版本。因此，测量仪可以用来监测过滤器系统、通风系统以及风扇。也可以检查加压容器及其填充水平。然而，还可以选择在房间内进行测量。此时可能需要一种可以进行其他测量的测量仪，比如流量测量。与其他测量仪进行组合可能也有帮助。
Differential pressure transducers – a look at the equipment features
Whether the search for an instrument involves temperature transducers or pressure transducers, it comes down to what features the instruments have. You can find a variety of designs at Testo which also means they can be used in various fields. For differential pressure, you therefore have the option of using a classic pressure transducer with a display. There are also models available without a display.
If you need even more detailed designs, you can check which additional features the transmitters have. The measuring range is for example an indication of the precision here. If the measuring range is kept particularly low, you benefit from very accurate measurement even at low pressure. On the other hand, where there are higher measuring ranges, discrepancies may occur.
The optimum features to ensure differentiated and precise measurement are:
- low measuring range
- additional measurements of flow velocities and volumes
- accuracy, irrespective of the temperature
Ordering differential pressure transmitters from Testo
Do you need a differential pressure transducer and would you like to be able to choose from a wide selection of instruments? Testo offers you this possibility. We have a variety of instruments on offer which are differentiated by the features they have. This starts with the display itself. Not every transmitter has a display. Configurable alarm systems are also only used in individual models. You can identify precise measurements by the measuring ranges. In addition, you can check whether instruments are capable of carrying out other measurements. Some differential pressure transducers are designed in such a way that they enable additional measurement of volume flow or flow velocity.
Transducers with alarm management
Instruments which have an alarm fitted are often particularly well-used in production. This does not just apply to transmitters. Temperature measuring instruments or instruments for checking humidity may have alarm management. This provides several advantages straight away. As a user, you have the possibility of specifying values within a defined framework here. If these values are reached or exceeded, an alarm is triggered. Further advantages are:
- monitoring without constant checking
- alarm signals when there are major changes
- possibilities to respond quickly when there are changes
- complex monitoring options for large systems
Transducer with reconciliation and alarm
Not every instrument is capable of carrying out a reconciliation or an analysis. However, pressure transducers which have this facility form very good foundations for accurate results and the possibility of responding quickly in this area. Above all, this enables you to save a lot of time when carrying out an analysis or a reconciliation with the pressure transmitter. In this case, you do not need to take time to carry out an analysis yourself, leaving it instead to the instrument. The reconciliation of the data can also provide time savings during maintenance.