Vaisala Indigo500 Series, Руководство пользователя, Страница: 78 / 124

6.3.1 Analog output configuration example
This example shows how to configure analog output channel 1 to use the following settings
when a relative humidity probe is connected to the transmitter as Probe 1:
• 4 … 20 mA current output
• Error output 3.6 mA
• Relative humidity measurement scaled to 0 … 100 %RH
To configure the analog output, use the following values:
• In the General tab:
• Output mode : 4 … 20 mA
• In the Output 1 tab:
• Output off/on : Set output off to edit settings.
• Parameter : Probe 1, Relative humidity
• Scale low end : 0
• Scale high end : 100
• Error output : 3.6
• Low clipping limit : 3.8
• High clipping limit : 20.5
• Output off/on : Set output on to activate settings.
6.3.2 Testing analog outputs on touchscreen
To test that the analog output of the transmitter is accurate, you can set the probe to output a
fixed level of current and view the reading to verify the output.
1. Select the configuration menu symbol at the upper right corner of the touchscreen.
2. Select Inputs and outputs > Analog outputs .
3. In General > Output mode select the current or voltage range for the outputs.
4. In the Test mode tab, configure test mode settings.
a. In Test mode , set the test mode on for the analog output you want to test.
b. In Force output to , enter the current level that you want the transmitter to output or
choose Output error to use the transmitter's error state output level.
5. Read the analog output and verify that the output is correct.
6. After verifying the output, go back to Menu > Inputs and outputs > Analog outputs >
Test mode and turn the test mode off.
7. Repeat step 3 … step 6 for all the analog output channels you want to test.
To read the analog output, select . Then use the left and right arrows at the
bottom of the touchscreen to navigate to the I/O status view.
Indigo510, Indigo520 User Guide M212287EN-N
78