KNT601 Online Turbidity Sensor
1.Working Principle
KNT601 integrated online turbidity sensor is designed and
manufactured using the principle of scattered light turbidity
measurement. When a beam of light is incident on a water sample,
the light is scattered by the turbidity substance in the water
sample, and the intensity of the scattered light in the direction
perpendicular to the incident light is measured and compared with
the internal calibration value to calculate the turbidity in the
water sample. Degree, linearized to output the final value.
2.Feature
- 90° angle scattered light principle, built-in temperature sensor
- Support RS-485, Modbus/RTU protocol
- Optical fiber structure, strong resistance to external light
interference
- Infrared LED light source with high stability
- IP68 protection, water depth within 20 meters
- Convenient, fast, stable and easy to maintain
3.Technical Specifications
| Model | KNT601 |
| Measuring principle | Scattering light method |
| Measuring range/Resolution | 0～1000NTU/0.1NTU /0.1℃ |
| 0～100NTU /0.1NTU /0.1℃ |
| 0～20NTU /0.01NTU/0.1℃ |
| Accuracy | ±5% or ±3NTU(0～1000NTU)
±3% or ±2NTU(0～100NTU)
±3% or±1.5NTU(0～20NTU)
±0.5℃ |
| Calibration mode | Two-point calibration |
| temperature compensation | Automatic temperature compensation(Pt1000) |
| Output mode | RS-485( Modbus /RTU) |
| Working conditions | 0～50℃,<0.2MPa |
| Storage temperature | -5～65℃ |
| Installation mode | Immersive installation, 3/4NPT thread |
| Cable length | 5 meters, other lengths customizable |
| power dissipation | ＜0.3 W@12 V |
| source | 12～24 VDC ±10% |
| levels of protection | IP68 |
4.Dimensional Drawing
Note:The sensor connector is m16-5 core waterproof connector male.
5.Installation and Electrical Connection
5.1 Install
Installation distance requirements: keep above 5 cm with side wall
and above 10 cm with bottom.
5.2 Electrical Connection
- Red wire-power cord(12～24 V)
- Black wire-ground wire(GND)
- Blue Line-485 A
- White Line-485 B
- Bare wire-shield line
After the wiring is completed, it should be carefully checked to
avoid the wrong connection before the power is turned on.
Cable specification: considering that the cable is immersed in
water (including sea water) or exposed to air for a long time, the
cable has a certain corrosion resistance. All interfaces of cable
outer diameter Φ6mm, have been waterproof.
6.Maintenance
6.1 Maintenance Procedures and Methods
6.1.1 Maintenance Schedule
The cleanliness of the measuring window is very important for
maintaining accurate readings.
| Maintenance task | Recommended maintenance frequency |
Calibrate sensors (If required by the competent authority) | According to the maintenance schedule required by the competent
department |
6.1.2 Maintenance Method
- Sensor outer surface: clean the outer surface of the sensor with
tap water, if there is still debris residue, wipe with wet soft
cloth, for some stubborn dirt, you can add some household washing
liquid to tap water to clean.
- Check the cable of the sensor: the cable should not be tightened
when it is working properly, otherwise it is easy to break the wire
inside the cable and make the sensor unable to work properly.
- Check the sensor measurement window if there is any dirt, cleaning
brush is normal.
6.1.3 Matters Need Attention
The probe contains sensitive optical and electronic components.
Make sure the probe is not subjected to severe mechanical impact.
There are no components inside the probe that need to be maintained
by the user.
6.2 Calibration of Sensors
a) Zero calibration: take proper amount of zero turbidity solution
with large beaker, put the sensor vertically in the solution, the
front end of the sensor is at least 10 cm from the bottom of the
beaker, and the zero calibration will be carried out after the
value is stabilized for 3 minutes. The instructions refer to the
appendix.
b) Slope calibration: the sensor probe is placed in the standard
solution, the front end of the sensor is at least 10 cm from the
bottom of the beaker, and the slope calibration is carried out
after 3 ≤ 5 minutes of numerical stability. The instructions refer
to the appendix.
6.3 Frequently Asked Questions
| Wrong | Probable Cause | Solution |
| The operating interface cannot connect or does not display the
measurement results | The measured value is too high, too low, or the numerical value
remains unstable. | Reconnect the controller and cable. |
| Cable failure | Please contact us. |
| The measured value is too high, too low, or the numerical value
remains unstable. | The sensor window is attached to the external object. | Clean the window surface of the sensor. |
7.Quality and Service
7.1 Quality Assurance
- The quality inspection department has a standard inspection
procedure, with advanced and complete detection equipment and
means, and according to the procedure inspection, the product is
subjected to 72-hour aging experiment and stability experiment, so
that a non-conforming product is not allowed to leave the factory.
- The consignee shall refund directly the product batches with a
failure rate of 2%, and all expenses incurred shall be borne by the
supplier. Consider the standard reference to the product
description provided by the supplier.
- Ensure the quantity of goods and the speed of shipment.
7.2 Spare Parts
This product includes:
- One transmitter
- One copy of explanation
- One certificate of quality
7.3 After-sales Service Commitment
The Company has provided the local after-sales service within one
year from the date of sales, but does not include the damage caused
by improper use. If it is necessary to repair or adjust it, please
return it, but the freight is required to be self-contained. When
it is returned, it shall be confirmed that the package is good to
avoid damage during transportation. The Company will repair the
damage of the instrument free of charge.
Contact Us
Website www.kacise.com
Phone +86-17719566736
Email sales@kacise.com
Location Tangyan South Road, High-tech Zone, Xi'an City, Shaanxi
Province, China
