Products
Model：
HD-DJ20
Introduction：
Online Transparency Sensor measures water transparency using light scattering or absorption with high sensitivity and RS485 output. Widely used for water quality monitoring and wastewater treatment....
The HD-DJ20 online transparency sensor measures water transparency using the scattering or absorption characteristics of light. With high sensitivity, fast response and real-time monitoring capability, it is widely used in water quality monitoring and wastewater treatment.
1. RS485 (MODBUS-RTU) signal output with an infrared LED light source for strong interference immunity.
2. Measuring range 50–1000 mm with a resolution of 1 mm.
3. Internal signal isolation technology for strong interference immunity.
4. Good reproducibility, thermal stability and low drift, with a compact body and fast response.
5. 3/4 NPT pipe thread for simple immersion mounting, with stable performance and long service life.
6. IP68 waterproof rating.
7. Two-point calibration and an optional 4–20 mA current output.
| Measurement principle | Scattered-light method |
| Signal output | RS485 (MODBUS-RTU) |
| Measurement range | 50–1000 mm |
| Resolution | 1 mm |
| Accuracy | ±5% (depending on sample homogeneity) |
| Housing material | Glass and ABS |
| Cable length | 5 m standard |
| Power supply | 12–24 VDC (approx. 0.4 W at 12 V) |
| Calibration | Two-point calibration |
| Operating environment | 0–50 °C (non-freezing), < 0.2 MPa |
| Waterproof rating | IP68 |
| Mounting | Immersion mounting, NPT 3/4 thread |
Do not install the sensor upside down or horizontally; install it at an angle of at least 15° to the horizontal.
The cable is a 5-core shielded cable: brown - power supply (12–24 VDC), black - ground (GND), blue - RS485-A, green - RS485-B, yellow - 4–20 mA current output (may be left floating if unused). Check the wiring order carefully before powering on, to avoid unnecessary losses caused by incorrect connection. Cable colours may differ slightly between production batches; the colour print on the cable always prevails.
Electrodes require periodic cleaning and calibration; the interval depends on the actual working conditions. Standard cleaning procedure: remove deposits with a soft brush (do not scratch the electrode surface), rinse with distilled water, then calibrate.
Products
Services
About
Contact
Copyright © Shandong Horde Electronic Technology Co., Ltd. All Rights Reserved.
Disclaimer: This website cannot identify the intellectual property rights of uploaded images or text. If there is any infringement, please notify us in a timely manner, and this website will review and delete it as soon as possible.
008619053605658
Agricultural Testing
Packaging Testing
Water Quality Testing
Physical Performance Testing
Microbiological Testing
Cleanliness Analysis
Gas Detection
Sample Pretreatment
Spectral Analysis
Laboratory Analysis
Food Rapid Test
Atmospheric Environment Analysis
Biochemical Analysis
Chromatography Analysis
Hydrological Measurement
Surveying & Mapping
Other Specialized
+86 19053605658
WhatsApp
