1. Take the commonly used CM442-3PQ7/0 as an example
CM442: the main board of CM442 shows that the power supply is 220V AC. here we use CPS glass electrode, digital sensor and no additional power supply. we use CYK10 digital electrode cable, and the wiring is 87 brown, 88 white, 97 green and 98 yellow.
2. After power on, the instrument display interface. As can be seen in the figure below, there are 4 buttons and a knob. The knob can be adjusted left and right. The middle of the knob is the OK key. Press the OK key to enter the system menu.
3. Modify the language, find the language in the menu, and press the middle key knob to modify the language that the user needs to display. Therefore, when purchasing CM442, the choice of language is not necessary, but can be adjusted manually.
4. regular settings can be found in the menu interface. The digital sensor has built-in electronic components and stores calibration parameters and other information. Once the sensor is successfully connected to the transmitter, the sensor parameters are automatically transmitted to the transmitter to calculate the current measurement value. Users can select the temperature unit and current output range according to their needs.
5. Find the settings in the menu interface and press the middle key button to enter the output interface.
6. The following figure can see the current output 1:1 and current output 1:2, press the middle key to enter respectively.
7. Knob to select the data source and press the middle key of the instrument.
8. As shown in the figure below, the glass electrode is selected. The user can select the data source according to the different sensors.
9. When the data source is selected, the measured value will appear on the display interface. Users can select the measured value they need according to their needs. The setting of current output 1:2 is basically the same as that of current output 1:1. Users can set it according to the steps of current output 1:1.
