KBG602 Online Blue Green Algae Sensor Support RS-485 Modbus/RTU
Protocol Monitoring Red Algae
1.Working Principle
The blue green algae sensor utilizes the characteristic that the
blue green algae has an absorption peak and an emission peak in the
spectrum. The spectral absorption peak of the blue green algae
emits monochromatic light to the water, and the blue green algae in
the water absorbs the energy of the monochromatic light, releasing
another wavelength. The monochromatic light of the emission peak,
the light intensity emitted by the blue green algae is proportional
to the content of blue green algae in the water.
2.Feature
- Monitoring the concentration of micro algae in the ocean harbor
- Monitoring green algae and blue algae such as rivers and lakes
- Determination of green algae concentration in the treatment of
green algae cultivation equipment
- Support RS-485 (Modbus/RTU protocol)
- Convenient, fast, stable and easy to maintain
3.Technical Specifications
| Item | Value |
| Measuring range | 0—300.0 K cells/ml |
| Resolution | 0.1 K cells/ml(100 cells/ml) |
| Accuracy | ±3% |
| Calibration | Two-point calibration |
| Protection grade | IP68 |
| Deepest depth | Underwater 20 meters |
| Storage temperature | -15～65℃ |
| Sensor interface | RS-485(Modbus/RTU) |
| Power information | 12～24 V DC ±10% |
| Power consumption | <0.3 W@12 V |
| Cable length | 5 meters, other lengths can be customized |
| Shell material | PVC |
| Item | Value |
| Conditional requirements | The distribution of blue green algae in water is uneven, and it is
recommended to monitor more;
The water turbidity is less than 50 NTU. |
4.Dimensional Drawing
5. Installation and Electrical Connection
5.1 Installation
Installation distance requirement: keep more than 5 cm with the
side wall and 20 cm or more with the bottom.
5.2 Electrical Connection
a) Red line - power cord (12 ~ 24 V DC)
b) Black line - ground (GND)
c) Blue line - 485 A
d) white line - 485 B
e) bare wire - shielded wire
After wiring is completed, it should be carefully checked to avoid
incorrect connections before powering up.
Cable specification: Considering that the cable is immersed in
water (including sea water) for a long time or exposed to the air,
the cable has certain corrosion resistance. The outer diameter of
the cable is Φ6 mm and all interfaces are waterproof.
6 Maintenance
6.1 Maintenance Procedures and Methods
6.1.1 Maintenance Schedule
The cleanliness of the measurement window is very important to
maintain accurate readings.
Calibrate the sensor (if required by the competent authority)
according to the maintenance schedule required by the competent
authority
| Maintenance task | Recommended maintenance frequency |
| Calibrate the sensor (if required by the competent authority) | According to the maintenance schedule required by the competent
authority |
6.1.2 Maintenance Methods
- 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.
- Check the cable of the sensor: the cable should not be tightened
during normal operation. Otherwise, the internal cable of the cable
may be broken and the sensor may not work normally.
- lCheck the sensor's measurement window for dirt.
6.1.3 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.
6.2 Sensor Calibration
a) Zero calibration: Take a proper amount of distilled water in a
large bucket and place the sensor vertically in the solution. The
front end of the sensor is at least 20 cm away from the bottom of
the beaker. After 3 to 5 minutes, the value is stabilized and the
zero point is calibrated. The instructions refer to the appendix.
b) Slope calibration: Place the sensor probe in the standard
solution. The front end of the sensor is at least 20cm away from
the bottom of the beaker. After 3 to 5 minutes, the slope is
calibrated after the value is stable. The instructions refer to the
appendix.
6.3 Frequently Asked Questions
| Error | Possible Reason | Solution |
| The operation interface cannot be connected or the measurement
result is not displayed. | The measured value is too high, too low or the value is
continuously unstable | Reconnect controller and cable
|
| Cable failure | Please contact us |
| The measured value is too high, too low or the value is
continuously unstable | The sensor window is attached by a foreign object | Cleaning the sensor window surface |
7.Quality and Service
7.1 Quality Assurance
- The quality inspection department has standardized inspection
procedures, advanced and perfect
testing equipment and means, and strictly in accordance with the
regulations, to do 72-hour aging test and stability test on the
product, and not to allow one unqualified product to leave the
factory.
- The receiving party directly returns the product batch with a
failure rate of 2%, and all the costs incurred are borne by the
supplier. The reference standard refers to the product description
provided by the supplier.
- Guarantee the quantity of goods and the speed of shipment.
7.2 Accessories Spare and Parts
This product includes:
- 1 sensor
- Calibration powder 3 packs
- 1 copy of the manual
- 1 certificate
7.3 After-sales Service Commitment
The company provides local after-sales service within one year from
the date of sale, but does not include damage caused by improper
use. If repair or adjustment is required, please return it, but the
shipping cost must be conceited. Damaged on the way, the company
will repair the damage of the instrument for free.
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
