Municipal and industrial wastewater treatment uses the wall-mounted suspended solids sludge concentration meter S-730. It accounts for ambient interference and pollutant deviation with four beam measurement. The LCD widescreen multi data display monitors suspended solids, sludge concentration, and turbidity. Features include RS485 interface, 4-20mA output, and dual relay alarm. It delivers continuous and accurate activated sludge concentration data during biochemical treatment by bracket immersion or pipeline insertion. The sewage treatment industry online monitoring equipment is reliable.a
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Features
- Multi beam measurement technology, compensating for the impact of the environment
- Simultaneous display of multiple parameters: measured value, output current, time, concentration percentage, etc
- Various variable outputs such as 4-20mA transmission output, relay high and low alarm control output, RS485 communication output, etc. are intelligently controlled by the system
- Using two-point calibration method, sensor errors can be corrected
- Multiple installation methods and measurement units to choose from
- Chinese and English operation interface, easy to operate
Parameters
| Category | Specifications |
|---|---|
| Measurement Parameters | Suspended Solids (SS), Sludge Concentration (MLSS), Turbidity |
| Range & Accuracy | Measurement range: 0-30g/L; Accuracy: ±1.0%FS; Repeatability: ±1.0%FS |
| Core Performance | Resolution: 0.001g/L or 1mg/L; Measuring units: g/L, mg/L, NTU (selectable); 4-beam measurement technology |
| Power & Signal | Power supply: AC220V±10% or DC24V; Analog output: 4-20mA (load 750Ω); Digital output: RS485 Modbus-RTU (optional) |
| Alarm Output | 2 groups of relays (support high/low point alarm); 2 additional backup relays |
| Physical Specifications | Dimension: 242×183.5×121.5mm; Protection class: Transmitter IP65 / Sensor IP68 |
| Sensor Parameters | Material: 316 stainless steel; Temperature range: 0-60℃; Pressure resistance: 1.0MPa; Process connection: 3/4NPT |
| Standard Configuration | Host: S-730; Sensor: TD-30; Submersible sheath: PP1020-100; Shielded cable: 10m (extendable) |
Core Highlights
- Four beam technology: eliminates interference, compensates for environmental effects, and achieves more stable measurements;
- Multi display and multi adaptation: multiple parameters are displayed on the same screen, and three measurement units can be freely switched;
- Easy installation operation: wall mounted host, dual sensor installation mode, user-friendly interface in both Chinese and English;
- Calibration correction spirit: two-point calibration+measurement value correction to ensure accurate data;
- Output control: 4-20mA+RS485+dual alarm relay, meeting the requirements of intelligent system control.
Featured Applications
- Municipal sewage treatment: monitoring of activated sludge concentration (MLSS) in biochemical reaction tanks, control of suspended solids (SS) concentration in secondary sedimentation tanks, and compliance monitoring of inlet and outlet water quality;
- Industrial wastewater treatment: monitoring of suspended solids concentration in wastewater from industries such as chemical, printing and dyeing, and papermaking, regulating the concentration of sludge return pipes, and optimizing treatment processes with data support;
- Environmental Protection Engineering: Real time tracking of water quality at the centralized sewage treatment station in the park, monitoring of suspended solids concentration during the treatment of leachate from garbage.
Daily maintenance and precautions
Installation and operation points
- Installation requirements: The host should avoid direct sunlight and vibration and be located in an easy-to-operate and maintain location. Sensors should be installed away from bubble accumulation. Fix and seal the bracket for immersion. Base should be welded to pipeline for insertion installation, and cable extension should not exceed recommended distance.
- Specifications for wiring: The sensor’s blue wire is connected to IN1, the green wire to IN2, the yellow wire to V -, and the red wire to V+; the 4-20mA output I1+ is connected to the corresponding terminal, and I1- is connected to the common terminal; RS485 communication A is connected to terminal A, and B to terminal B; and the AC220V power supply L to the corresponding terminal, N to the neutral wire, ground the PG terminal, and turn o.
- Method of operation: Enter measurement mode to view real-time data after booting; calibration required sensor cleaning. Before calibration, stabilize the low point in a black container with distilled water for 15 minutes and the high point with a standard solution. Set language, unit, range, relay alarm value, and other parameters through the menu with a default password of 1001.
Daily maintenance and troubleshooting
- Thoughts on maintenance: To keep things clean, clear the input and exit pipes, as well as the electrode light window and flow cell. If the measurement mistake is big, you should calibrate quickly. Some connections keep interference from happening.
- Troubleshooting: LCD doesn’t light up? Check power and polarity; current output doesn’t need wiring or calibration; communication failure requires parameter matching and cable quality; aberrant relay alarm requires alarm type and threshold settings.
Technical Support
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The S-730 is ideal for monitoring suspended particles and sludge concentration in sewage treatment due to its exact four beam measurement, multi scene adaptability, and easy operation. Strong anti-interference, flexible calibration, and rich output can be easily integrated into intelligent control systems to provide reliable data support for optimizing municipal and industrial wastewater treatment processes and water quality compliance, helping to efficiently achieve water quality management goals.
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