- Multi-parameter Water Analyzer
- Single-Parameter Water Aalyzer
- DO Sensor
- Trace DO Sensor
- CO₂ Sensor
- COD Sensor
- EC TDS Sensor
- Salinity EC TDS Sensor
- TSS Sensor
- Turbidity Sensor
- PH Sensor
- ORP
- Ion Selective Sensor
- Ammonia Nitrogen Sensor
- Oil in Water Sensor
- Blue-Green Algae Sensor
- Chlorophyll Sensor
- Residual Chlorine Sensor
- Marine Current Sensor
0102030405
High-Precision RS485 PH Sensor for Water Quality Monitoring - China Suppliers & Factory Direct Quality
Product Parameters
| Product Name | PH Sensor |
| Range | 0-14 PH |
| Accuracy | ±0.02 PH |
| Power | DC 9-24V, current <50 mA |
| Material | Polymer Plastic |
| Size | 31mm × 140mm |
| Output | RS-485, MODBUS Protocol |
Product Features
①
Isolated Power Supply & Anti-Interference
The sensor's isolated power design minimizes electrical noise, ensuring stable data transmission in environments with strong electromagnetic interference.
②
Dual Temperature Compensation
Supports automatic or manual temperature compensation to maintain accuracy across varying operating conditions (0-60°C).
③
Multi-Calibration Compatibility
Calibrate effortlessly using USA, NIST, or custom pH/ORP solutions for tailored measurement scenarios.
④
Flat Bubble Structure
The smooth, flat surface prevents air bubble accumulation and simplifies cleaning, reducing maintenance downtime.
⑤
Ceramic Sand Core Liquid Junction
A single salt bridge with a ceramic sand core ensures consistent electrolyte flow and long-term measurement stability.
⑥
Compact & Durable Design
Constructed from corrosion-resistant polymer plastic, the sensor withstands harsh chemicals and physical stress while occupying minimal space.
Application
1. Water Treatment Plants
Monitor pH levels in real time to optimize neutralization, coagulation, and disinfection processes.
2. Environmental Monitoring
Deploy in rivers, lakes, or reservoirs to track acidity changes caused by pollution or natural factors.
3. Aquaculture Systems
Maintain optimal pH for aquatic life health and prevent stress or mortality in fish and shrimp farms.
4. Industrial Process Control
Integrate into chemical manufacturing, pharmaceuticals, or food production to ensure compliance with quality standards.
5. Laboratory Research
Deliver precise pH data for scientific studies on water chemistry, soil analysis, or biological systems.
6. Hydroponics & Agriculture
Manage nutrient solutions and irrigation water to enhance crop growth and yield.
Digital RS485 Water Quality Sensors Technical Data
| Parameter | Model | Range | Accuracy |
| DO sensor | LMS-DO10B | 0-20mg/L, 0-60℃ | ±0.1-0.3mg/L |
| DO sensor | LMS-DO10C | 0-20mg/L, 0-60℃ | ±0.3mg/L |
| Trace DO sensor | LMS-TDO100 | 0-2000ppb, 0-50℃ | ±1ppb |
| PH sensor | LMS-PH100 | 0-14pH | ±0.02pH |
| ORP sensor | LMS-ORP100 | ±1000.0 mV | ±0.2 mV |
| EC/TDS sensor | LMS-TDS102 | CT: 0-9999uS/cm; 0-100mS/cm; TDS: 0-10000ppm |
±2.5%FS |
| Salinity/EC/TDS sensor | LMS-SAL104 | Conductivity: 0.1-500 mS/cm TDS: 0-60000ppm Salinity: 0-500.00ppt |
±1.5%FS |
| COD sensor | LMS-COD100 | COD: 0.1-1500mg/L TOC: 0.1-750mg/L BOD: 0.1-900mg/L Turbidity: 0.1-4000NTU Temperature range: 0-50℃ |
±5% equiv.KHP Temperature: ±0.5℃ |
| TSS sensor | LMS-TSS100 | 0-50000mg/L / 0-120000mg/L | ±10%FS or 10 mg/L |
| Turbidity sensor | LMS-TUR10L | 0-100NTU | ±10%FS or 0.3 NTU |
| Turbidity sensor | LMS-TUR10H | 0-3000NTU | ±10%FS or 0.3 NTU |
| CO2 sensor | LMS-CO2100 | 2000PPM / 10000PPM / 50000PPM | ±5%FS |
| Ammonia Nitrogen sensor | LMS-NH4100 | 0-1000 mg/L | ±5%FS |
| Ion Selective sensor | LMS-ION100 | 0-1000 mg/L | ±5%FS |
| Oil in Water sensor | LMS-OIL100 | 0-50 mg/L; 0-5 mg/L | ±3%FS |
| Chlorophyll sensor | LMS-CHL100 | 0-500ug/L | ±3%FS |
| Blue-Green Algae sensor | LMS-BGA100 | 0-2,000,000 cells/ml | ±3%FS |
| Residual Chlorine sensor | LMS-HCLO100 | 0-20.00 ppm | ±5%FS |
| Marine Current sensor | LMS-Current100 | Temperature: -3℃ - 45℃ Velocity of flow: 0-500 cm/s Flow direction: 0-359.9° |
±0.05℃ ±1 cm/s or ±2% ±2° |
Frequently Asked Questions (FAQ)
What is the measurement range of this PH sensor?
The PH sensor (model LMS-PH100) covers a full measurement range of 0-14 pH with an accuracy of ±0.02 pH, making it suitable for both acidic and alkaline environments.
What communication protocol does the PH sensor use?
The sensor outputs data via RS-485 interface using the MODBUS protocol, enabling easy integration with PLCs, data loggers, and industrial control systems.
Does the PH sensor support temperature compensation?
Yes. The sensor supports both automatic and manual temperature compensation, maintaining measurement accuracy across a wide operating temperature range of 0-60°C.
What calibration solutions are compatible with this sensor?
The sensor is compatible with USA standard, NIST standard, and custom pH/ORP calibration solutions, providing flexibility for various application requirements.
What are the typical applications for this PH sensor?
This sensor is widely used in water treatment plants, environmental monitoring, aquaculture systems, industrial process control, laboratory research, and hydroponics or agricultural water management.
What is the power supply requirement for the PH sensor?
The sensor operates on a DC power supply ranging from 9V to 24V, with a current consumption of less than 50 mA, making it energy-efficient and compatible with most industrial power systems.