How To Maintain Wastewater Continuous Nitrate Monitoring UV NO3 Nitrate Sensor?

Debugging and maintenance of UV NO3 Nitrate Sensor PUVNO3-900

1. Unpack and check the packing list

Take out the equipment to check the probe model and quantity to ensure that the contents are consistent with the packing list

Dust-free cloth, M4 combination screws, hexagonal wrench, 

cleaning tools, scraper, mounting bracket, host

2. Connect the probe and power it on to ensure that the data is displayed normally.

First, turn off the power of the controller.

Then align the protrusion of the probe cable with the concave point of the controller.

Insert it to the bottom and tighten it.

Then power on the controller.

The initial value displayed when it is connected is 0.01.

The normal value in the air is below 1.

3. Data is normal. Install the equipment.

Installation completed.

Use M4 combination screws to connect the sensor to the bracket.

First install the rubber ring.

Then put it into the corresponding groove and tighten it in sequence.

Then adjust the tightness of the nut according to the depth of the pool on site to fix the probe at a suitable height.

4. Menu Introduction

Enter the probe configuration

You can see mg/L or PPM

The measurement mode can be selected from standard sample mode and water sample mode

The shortest measurement time interval is once every 15 seconds

You can adjust the time according to the needs of the site

The cleaning cycle is the scraper cleaning cycle

The default is to clean once an hour

You can adjust the time according to the needs

It is recommended that the time should not be less than one hour

The scraper is easily damaged if the cleaning time is too frequent

Detection/Maintenance

Fault analysis can view the fault reported by the probe

There is a wipe in the maintenance step to allow the scraper to drive out bubbles

Remove the wipe to remove the scraper and replace the scraper

Signal can view the signal value of the probe in standard samples or water samples of different concentrations

5. Cleaning and maintenance of the instrument

1). Clean the scraper

Clean the scraper with the scraper removed

Rinse the inside of the measuring window with pure water

Put an iron sheet in the cleaning bag

Wrap it with a dust-free cloth and insert it into the measuring window to clean the lens

Reset the scraper after cleaning

2). Replace the scraper brush

Loosen and remove the small screw

Then remove the main shaft

Move out the scraper brush

Remove the scraper brush

Replace with a new scraper brush

Screw the scraper brush back

Finally screw on the main shaft and nut

6. Zero point calibration

Click the menu button

Probe configuration

Calibration

Absorbance calibration

Zero point calibration

Put the probe in pure water

Select wipe

The scraper will start to work

Wait for stability and click OK to complete the zero point calibration

7. Standard solution calibration

Prepare two standard solutions with known concentrations

Click to enter the menu

Nitric nitrogen

Probe configuration

Calibration

Standard sample calibration

Two standard sample parameters can be set

1). Low-concentration standard sample calibration

Pour the low-concentration standard solution into the measuring cup

The measuring window needs to be submerged in water

Use the scraper to remove the bubbles

Return to the controller to continue the operation

Set the low-concentration standard solution in "1"

2). High-concentration standard calibration

Now use 40% concentration standard solution for calibration

Pour the standard solution into the container

It also needs to cover the measurement window

Use the scraper to remove the bubbles in the measurement window

Set the high-concentration standard solution in "2"