Explosion-proof split ultrasonic level gauge

1. Technical indicators and selection codes

   
   

2.Parameter setting

2.1 Instrument calibration steps

1) The meter is powered on, the meter enters the measurement, and the LCD displays

Display the liquid level value, as shown on the right, and the measured liquid level

Picture keywords

It is 3.320m, the calibration method is introduced below.

2) Click the Mode button, the meter

You can enter the parameter setting menu, first enter

The P01 (Level) level calibration menu.

3) Click the OK button to enter the level calibration input

Interface, input the measured liquid level value 3.320m,

As shown on the right, press the Mode button to return after setting

Level menu.

4) Click the Mode button again as shown on the right.

Mode key to return to the parameter setting menu, click OK

Press to exit the parameter setting menu.

5) The meter displays the measured liquid level, after which the meter reads

The number will correctly reflect the actual liquid level on site.

2.2 Parameter 4 ～ 20mA setting

1) When the meter works normally, click the Mode button to enter the parameters

After setting the menu, press the ▼ key to select the P02 (4-20mA) setting menu, as shown on the right.

2) 20mA setting

a) Click the OK button to enter the 20mA parameter setting

Set the menu, the LCD display is as shown on the right.

b) Click OK to enter the 20mA value input

Enter the interface, enter the value, as shown on the right, table

Output 20mA when the liquid level reaches 5m, set the picture keywords

Then press the Mode key to exit.

3) 4mA setting

In the 20mA parameter setting menu point ▼ key to enter

Enter the 4mA parameter setting menu, click OK

Enter the setting, the method is the same as above.

2.3 Relay parameter setting

1) When the meter works normally, press the Mode key to enter

After entering the parameter setting menu, click the ▼ key to select to

P03 (Relay) relay setting menu, such as

Shown on the right.

2) Click OK to enter the relay 1 setting

    Menu as shown on the right.

3) Click ▼ to select other relays.

OK key to enter the relay 1 setting interface, such as

Right, the formula in the interface represents relay 1.

Closed when the liquid level is greater than 4m and less than 8m. Thesymbol positions in the interface can be selected as "<"> two types of symbols, and the position of the & symbol can be selected as "&", "|", "N" and "change". The symbol to be modified flashes. Press the ▲ key or the ▼ key to select the desired symbol. The numbers are modified as before.

Meaning of symbols:

<: Less than sign

>: Greater than sign

&: And, means that both conditions need to be met;

|: Or, it means that one of the two conditions is met;

N: Only the previous condition, the latter is not displayed;

∧: The former condition is the relay pull-in condition (usually used to open the pump), and the latter condition is the relay

Open condition (usually used to stop the pump), mainly used for drainage well and inlet well control.

4) If the relay is set as shown on the right, it means the relay

The device is closed when the liquid level is less than 1m. If "<"

The symbol changes to a ">" symbol, which means that

The appliance closes when the liquid level is greater than 1m.

If the relay is set as shown on the right, the relay is closed when the liquid level is less than 1m or greater than 9m.

5) There is also a more complex logic, such as drainage

Well, when the water level rises to 8m, the pump needs to be opened for drainage,

Stop the pump when the water is discharged to 2m, this logic setting

As follows:> 08.00∧<02.00, as shown on the right.

At this time, it means that the water level is greater than 8m

Stop the pump when the position is less than 2m.

In the case of inlet wells, for example when the water level drops

At 1m, the pump needs to be turned on to enter the water. When the water level reaches 6m

Stop the pump. This logic is set as follows:

<01.00∧>06.00, as shown on the right.

6) After setting the parameters of relay 1

Mode key returns to Relay relay setting

Setting menu, click ▼ button to select the desired setting

Other relays: for example,

Indicates that relay 2 is set. Click OK

Enter the setting, the method is the same as above.

2.4 Transducer height setting

The P04 (TH) menu does not need to be set when the liquid level has been set using the Level menu. You can refer to the transducer height at this time.

2.5 Display mode setting

P05 (Xstyle) menu can set the display mode, where

1. The Level option displays the liquid level and relay status on the LCD.

2. The AirH option displays the spatial distance and temperature on the LCD.

3. The LevelT option displays the liquid level and temperature on the LCD.

Click OK to select.

2.6 Window menu

The P06 (Window) menu is set at the factory and generally does not need to be changed.

2.7 Address ID number setting

P07 (ID) menu is used for communication, especially for multi-machine communication, the default is 01.

2.8 Baud rate setting

For P08 (BUAD) menu communication, there are three options of 2400, 4800 and 9600. Click OK to confirm. The default is 4800.

2.9 PWDB settings

The P09 (PWDB) menu is set at the factory and generally does not need to be changed.

2.10 4 ～ 20mA setting output

P10 (T4 ~ 20mA) menu point, the displayed value is the output current value after entering the OK button.

Use the ▲ key or the ▼ key to select different current outputs, which can be used for field verification or mutual correction with the control room current input equipment.