KTU310 Online Turbidity Sensor 90 ° Angle Scattering Principle
Fiber Structure, Strong Anti-Interference Ability
The KTU310 integrated on-line turbidimeter is designed and made by
the principle of scattering light turbidimeter. When a beam of
light enters a water sample, the light is scattered by the
turbidity material in the water sample. The turbidity in the water
sample can be calculated by measuring the intensity of the
scattered light in the vertical direction of the incident light and
comparing it with the internal calibration value, the final value
is output after linearization.
90 ° angle scattering principle, built-in temperature sensor
Support RS-485, Modbus/RTU protocol
Fiber structure, strong anti-interference ability of external light
Infrared LED light source, high stability
IP68, shield, water depth, 20 meters
Convenient, fast, stable and easy to maintain
| Model number | KTU310 |
| Measuring principle | Scattering method |
| Range | 0 ~ 100 NTU |
| Resolution | 0.1 NTU, 0.1 °C |
| Precision | ± 3% or ± 2 NTU ± 0.5 °C |
| Calibration mode | Two-point calibration |
| Temperature compensation | Automatic temperature compensation (PT1000) |
| Output mode | RS-485(Modbus/RTU) |
| Working conditions | 0ー50 °C, < 0.2 mpa |
| Storage temperature | - 5 ~ 65 °C |
| Installation mode | Immersion mounting, 3/4 NPT thread |
| Power consumption | < 0.05 W |
| Power supply | 12 ~ 24 VDC ± 10% |
| Protection level | IP68 |
Installation distance: 5 cm above the side wall and 10 cm above the
bottom.
The cable is a 4-core twisted pair shielded wire defined in line
sequence:
Red wire -- power cord (12V-24VDC)
Black line (GND)
Blue Line -- 485a
White line -- 485b
Before electrification, the wiring sequence should be carefully
checked to avoid unnecessary losses caused by wiring errors.
Wiring instructions: Consider the cable long-term immersion in
water (including seawater) or exposed to air, all wiring are
required to do waterproof treatment, customer cable should have a
certain anti-corrosion ability.
6.1.1 Maintenance Schedule
Measuring the cleanliness of windows is important for maintaining
accurate readings.
| Maintenance task | Recommended maintenance frequency |
| Calibration of sensors (if required by competent authority) | According to the maintenance schedule required by the competent
authority |
6.1.2 Maintenance Methods
Sensor outer surface: clean the sensor outer surface with tap
water, if there is still debris residue, wipe with a damp soft
cloth, for some stubborn dirt, you can add some household cleaning
liquid in tap water to clean.
Check the wire of the sensor: the wire should not be taut when
working normally, otherwise it is easy to break the wire inside the
wire and make the sensor can not work normally.
Check if the measuring window of the sensor is dirty and the
cleaning brush is normal.
6.1.3 Points to Note
The probe contains sensitive optical and electronic components.
Make sure the probe doesn’t get hit by any heavy machinery. There
are no parts inside the probe that require user maintenance.
Zero-point calibration: take a proper amount of zero-turbidity
liquid with a large beaker and place the sensor vertically in the
solution. The front of the sensor should be at least 10 cm from the
bottom of the Beaker. zero-point calibration should be carried out
after 3 ~ 5 minutes of numerical stabilization. Instruction
Reference Appendix.
Slope calibration: the sensor probe is placed in standard solution,
the sensor front end is at least 10 cm from the bottom of the
Beaker, and slope calibration is carried out after 3 ~ 5 minutes of
numerical stabilization. Instruction Reference Appendix.
| Questions | Probable cause | Solution |
| The interface can not be connected or the measurement results are
not displayed | Measurement value is too high, too low or value continues to be
unstable | Reconnect the controller to the cable |
| Cable failure | Please contact us |
| Measurement value is too high, too low or value continues to be
unstable | The sensor window is attached to something | Clean the surface of the sensor window |
Quality inspection departments have standardized inspection
procedures, with advanced and perfect testing equipment and means,
and in strict accordance with the rules of inspection, 72-hour
aging of products to do experiments, stability experiments, do not
let a unqualified product factory.
The consignee will return the lot of the product with 2%
nonconformity rate, and all the cost will be borne by the supplier.
The standard of consideration refers to the product description
provided by the supplier.
Guarantee the quantity and speed of delivery.
This product includes:
1 sensor
1 copy of instruction manual
Certificate 1
Our company provides after-sale service for one year from the date
of sale, but does not include damage caused by improper use. If
repair or adjustment is needed, please return it at your own
expense, the company will repair the damage of the instrument free
of charge.
