如何将汽化的过氧化氢探针连接到靛蓝发射机
Previously, we have published two video tutorials on connecting Vaisala'sVaporized Hydrogen Peroxide HPP270 probes:
In this video, we show how to connect the HPP270 probe to theIndigo500 transmitter。
Transcription below
嗨，我是Joni Partanen。在此视频中，让我们看一下HPP272过氧化氢探针如何连接到Indigo500发射器。
Indigo500发射器中的其他功能包括更多模拟输出。Indigo520具有四个模拟输出，而探针只有两个。Indigo500还提供了进一步的电源选择。在这里，我们在本单元中具有主要力量。您还可以使用Modbus TCP协议来适用于您喜欢以太网通信的情况。
在这里，我有一些示例过程连接，您可以在应用程序中使用。让我们使用这两个连接并安装HPP270探针。
Now, it's time to connect the instrument with the transmitter. It’s worth that this Indigo520 supports two probes simultaneously. But in this setup, I will use only one probe. The probe is now connected, and it's time to start setting up the display.
请注意，HPP270探针要做的第一件事是清除过程。清除现在已激活，我们可以从主动通知中看到它。我们要设置的第一件事是显示屏中的一些读数。
转到家庭设置：使用HPP270探针，我们对过氧化氢浓度感兴趣。让我们把它作为第一个参数，第二个可以是相对饱和，第三个可以是温度。
Now we can put something in the graph view as well. For example, hydrogen peroxide concentration and relative saturation. And graph scale, 15 minutes. Now we can see some readings but note that we see only the temperature. That’s because the purge process is now active.
The next thing we probably want to do is output this measurement data into a control or data acquisition system. Go to Menu and Outputs, and we will use analog outputs. For channel output number one, let's set hydrogen peroxide concentration with a minimum value of zero, and a maximum value of 2000 ppm for this application.
We also have the Error output. If something is wrong, say the probe is disconnected or something like that happens, the transmitter will output 3.6 milliamps. We will do the same for the second output and use relative saturation here as an output parameter. With 4 milliamps meaning 0% relative saturation and 20 milliamps meaning 100%. The error and low clipping limit can be the same. We want to know the temperature as well so that shall be our third output. Let’s say that temperature in our application from zero to 60 degrees C.
现在配置了输出，现在该检查控制系统是否读取与发射器输出相同的值了。我们测试模拟输出按预期进入系统。Indigo500发射器具有测试模式功能。我们将首先测试通道第一，并通过激活测试模式来做到这一点，该测试模式迫使模拟输出达到4毫安。
Now, I will use a multimeter to demonstrate the analog output. So, let's switch it to milliamp mode and make sure that we are measuring DC amperes here. We open the lid and find the analog output terminals, number one, two and three. We are simulating the value of 4 milliamps in the first channel. So, if I put the probes here in plus and minus, I can read 4.01 milliamps. Looking good.
我们还测试跨度值，即20毫安。它是20.01。看起来也不错。因此，现在，我们重复所有三个通道的测量。所有三个通道都已测试，现在该关闭盖子和停止测试模式了。请注意，这很重要，因为当实际过程开始运行时，我们不想将设备留在测试模式下。
现在我们返回主屏幕，在这里我们可以看到读数：目前2 ppm的蒸发过氧化氢，相对饱和为10％Rs，温度为23.2°C，这里可以在图表显示中看到HPP272探针现在已连接到发射器并安装到该过程中。我们测试了模拟输出已正确配置，并且按预期的是读取输出。因此，我们已经准备好进行测量。感谢您的观看！
接触us if you have any questions!
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