Overview
The water contains soil, dust, fine organic matter and Miscellaneous microorganisms and colloids, which can make the water turbid. After the light wave sent by the transmitter on the Sensor is absorbed, reflected and scattered by the measured object during transmission, a part of the transmitted rays of light can be irradiated on the 180 ° direction Detector, and a part of the scattered light is scattered on the 90 ° direction Detector. The intensity of the rays of light received on the 180 ° and 90 ° direction Detector has a certain relationship with the suspended solids of the measured sewage, so the suspended solids of the sewage can be calculated by measuring the intensity of the transmitted light and the scattered light. This product uses RS485 interface to communicate with Digital Sensor, High Data Precision, Strong Anti-interference, and can directly control the calibration and automatic cleaning of Digital Sensor.
Features
1. Large-screen dot matrix LCD display, support Chinese and English menus (switch between each other).
2. Built-in bubble elimination system (flow type), improve Measurement accuracy and Stability.
3. Good reproducibility, not affected by sample flow rate and pressure (immersion type).
4. Using a stable invisible near-monochrome Infrared source avoids the interference of chroma in the liquid and external visible light on Sensor measurement; and built-in photometric compensation to improve Measurement accuracy.
5. With water storage function, ensure that the water sample (circulation type) is left in the internal circulation tank of the Sensor for 24 hours.
6. Adopt new detection technology to avoid external light interference and have strong anti-interference ability (immersion type).
7. The quartz Glass lens with extremely high light transmitance is used on the optical path, and the emission and reception of infrared light waves are more stable.
8. Communication function (optional): With RS-485 communication interface (MODBUS protocol is partially compatible), the corresponding value of 4-20 mA current output can be set arbitrarily.
9. Photoelectric isolation 4-20mA current output.
10. The function of setting the lag amount arbitrarily avoids frequent operation of the switch relay, and has the function of setting the switch amount off and off.
11. Adopt the multi-point correction method.
12. The automatic cleaning interval can be set freely (Sensor support is required).
13. Watchdog function: Ensure that the meter does not crash.
14. The core components are all from foreign brands.
15. Power failure protection > 10 years.
Principle
After the light wave sent by the transmitter on the Sensor is absorbed, reflected and scattered by the measured object during transmission, a part of the transmitted rays of light can be irradiated to the Detector in the 180 ° direction, and a part of the scattered light is scattered to the Detector in the 90 ° direction. The intensity of the rays of light received by the Detector in the 180 ° and 90 ° directions has a certain relationship with the suspended solids of the tested sewage, so the suspended solids of sewage can be calculated by measuring the intensity of transmitted light and scattered light.
Applications
Wastewater monitoring, water quality analysis
Notice
• Make sure that the water sample (circulation type) is left in the internal circulation slot of the Sensor for 24 hours.
• Sensor support is required for automatic cleaning function.
Working conditions: environment temperature is 0~ 60 ℃, relative humidity ≤ 90%.
Output load: load < 500Ω (0-10mA), load < 750Ω (4-20mA).
• Operating voltage: 220VAC +/- 10%, 50/60Hz or book DC24V.
• Protection Rating: IP65 (meter); IP67 (Sensor).
