NBL-TPS-206 Online Transparency Water Quality Sensor

Many substances suspended in water can absorb or block visible light, which reduces the transparency of water. Therefore, the transparency of water can be calculated by measuring the absorbance of light, and the transparency sensor is designed according to this principle. When the transparency sensor is immersed in the liquid to be measured, it will read and measure the absorbance of the liquid to a specific wavelength of light beam, and then complete the measurement of transparency data through specific curve fitting and calculation. Product features: No pollution, economic and environmental protection Small size, convenient installation, on-line continuous water quality monitoring Transparency and water temperature parameters can be measured With a cleaning brush to prevent impurities and microorganisms from adhering Small drift, fast response, accurate measurement The long-term monitoring data has small drift and good stability Maintenance-free, long life cycle, low cost Low power consumption design, anti-interference design.

NBL-TPS-206 Online Transparency Water Quality Sensor Technical Specifications

1. Working principle

Many substances suspended in water can absorb or block visible light, which is manifested as the decrease of the transparency of water.Therefore, the transparency of water can be calculated by measuring the absorbance of a substance in water to light. The transparency sensor is designed according to this principle.When the transparency sensor is immersed in the liquid to be measured, it will read and measure the absorbance of the liquid to a specific wavelength beam, and then complete the measurement of the transparency data through specific curve fitting and calculation.

Pollution-free, economic and environmental protection

Small size, convenient installation, non-stop for online water quality monitoring

Can measure the transparency and temperature parameters

With cleaning brush, can prevent the impurity and microbial adhesion

Drift is small, fast reaction, precise measurement

Long-term monitoring data of drift small, stability is good

Free maintenance, use cycle is long, using cost is low

Digital signal output, the RS - 485 interface, Modbus/RTU protocol

Low power design, anti-jamming design

2. Electrical connection

The cable is a 4-core twisted-pair shielded wire, and the line sequence is defined:

Red line—power cable（12～24VDC）

Black line—Ground wire（GND）

Blue line—485A

White line—485B

Check wiring sequence carefully before power-on to avoid unnecessary losses caused by wiring errors.

Wiring instructions: considering that the cables have been immersed in water (including sea water) or exposed to air for a long time, all wiring points are required to be waterproofed, and the user's cables should have certain corrosion resistance.

3. Maintenance and maintenance

3.1.Maintenance schedule and method

1.1Maintenance schedule

To ensure accurate measurements, cleaning is important, and regular sensor cleaning helps data stability.

Note: The maintenance frequency in the above table is only a recommendation. Please maintain the sensor according to the actual usage of the sensor.

1.2 Maintenance method

1）Sensor outer surface: Clean the outer surface of the sensor with tap water. If there is still debris left, wipe it with a soft, damp cloth. For some stubborn dirt, add some household washing liquid to the tap water to clean it.

2）Check the cable of the sensor: the cable should not be tightened during normal operation. Otherwise, the cable inside the cable may be broken, causing the sensor to malfunction.

3) Check if the sensor's measurement window is dirty and the cleaning brush is normal.

4) Check the sensor's cleaning brush for damage.

5) For 18 months of continuous use, it is necessary to return to the factory to replace the dynamic sealing device.

1.3 Precautions

The probe contains sensitive optical and electronic components. Make sure the probe is not subject to severe mechanical shock. There are no parts inside the probe that require user maintenance.

4.Sensor calibration

4.1 The first calibration point: measure an appropriate amount of deionized water with a large beager, place the sensor vertically in the water to ensure that the liquid level does not pass the measured area, wait for 3-5 minutes and perform the first calibration when the value is stable.Instructions refer to appendix.

4.2 Second calibration point: The sensor is placed in a standard solution with specific transparency (50 ~ 500mm) and waited for 3-5 minutes for the value to stabilize before the second calibration point.Instructions refer to appendix.

Note: When the sensor is calibrated, the liquid should not pass through the measuring area at all. When calibrating, first calibrate the temperature, then calibrate the transparency.

5.Precautions

Avoid the sun exposure of the sensor

Please do not touch the sensor by hand

Avoid contact with the sensor surface during measurement and calibration

Avoid using any mechanical stress (pressure, scratches, etc.) directly on the sensor during use.

NBL-TPS-206 Online Transparency Water Quality Sensor Data Sheet

NBL-TPS-206 Online Transparency Water Quality Sensor.pdf