Online PH Meter

1. Online PH Meter Product Introduction

The Online PH Meter is an analytical instrument designed to continuously measure pH in industrial processes with fast response and good stability.ZS3Online PH Meter is an instrument capable of online monitoring of PH. It integrates PH sensor and measurement module communication storage, and can quickly and accurately record key parameters in water bodies. At the same time, the instrument supports the expansion of water quality multi-parameter sensors, including but not limited to pH value, dissolved oxygen (DO), conductivity, turbidity, temperature, ammonia nitrogen, etc., which can be combined and configured according to different needs and applications, record and store historical monitoring data, alarm history records, and support historical data export.xlsx. The RS485 interface supports MODBUS-RTU communication protocol to facilitate users to freely communicate with PLC, DCS, configuration software, DTU and other devices to connect and transmit data.

2. Online PH Meter Application Fields

Online multi-parameter water quality detectors are widely used in the monitoring and control of various water bodies, including but not limited to the following areas:

1. Water plant: used to monitor the pH value, dissolved oxygen, turbidity and other parameters of tap water to ensure the safety and hygiene of tap water.

2. Groundwater monitoring: used to monitor groundwater parameters such as pH value, conductivity, temperature, etc., so as to detect and solve water quality problems in time.

3. River and lake monitoring: used to monitor the water quality of rivers and lakes, such as dissolved oxygen, turbidity, ammonia nitrogen and other parameters, so as to take timely pollution control measures.

4. Ocean monitoring: used to monitor the water quality of the ocean, such as salinity, dissolved oxygen, temperature and other parameters, so as to timely detect and control marine pollution.

5. Sewage treatment: used to monitor sewage water quality parameters, such as pH, COD, ammonia nitrogen, etc., in order to control and adjust the sewage treatment process.

6. Industrial production: used to monitor water quality in industrial production processes, such as pH, conductivity, dissolved oxygen and other parameters, so as to adjust the process in time and ensure product quality.

7. Scientific research: used for water quality monitoring in the field of scientific research, such as lake eutrophication, climate change, etc.

3. Technical Features of Online PH Meter

1. High reliability: suitable for long-term work in the field environment, stable measurement and strong anti-interference ability.

2. Flexible and portable: Each probe can be freely combined, replaced independently, and plug and play.

3. Scalability: Various sensors can be freely combined.

4. Multiple applications: on-site rapid measurement, emergency monitoring, or long-term online monitoring of groundwater, river water, lake water, and urban pipe network water.

5. Tough shell: ABS+PC material, corrosion-resistant, can work normally for a long time.

6. Compact structure: can be installed in small places.

7. Communication connection: RS485 expansion interface, master/slave interface isolation and independent communication.

4. Online PH Meter Technical Parameters

5. Online PH Meter Product Size

Dimensions

6. Online PH Meter Sensor Configuration (optional)

PH	Measuring principle: electrochemical (salt bridge) Signal mode: RS485 (MODBUS-RTU) Measuring range: 0~14 (PH) Resolution: 0.01 Measurement accuracy: ± 0.1PH ± 0.1℃ Cable length: 5 meters as standard Measuring environment: Temperature 0~50℃ (no freezing), <0.2Mpa Waterproof grade: IP68 Installation method: Immersion installation, NPT3/4 thread
ORP	Measuring principle: electrochemical (salt bridge) Signal mode: RS485 (MODBUS-RTU) Measuring range: -1500~+1500 (mV) Resolution: 1mV Measurement accuracy: ± 6 mV Cable length: 5 meters as standard Measuring environment: Temperature 0~50℃ (no freezing), <0.2Mpa Waterproof grade: IP68 Installation method: Immersion installation, NPT3/4 thread
COD	Measuring principle: UV 254 absorption method dual light source measurement Signal mode: RS485 (MODBUS-RTU) Measuring range: 0~200mg/L 0~500mg/ LResolution: 0.1mg/LMeasuring accuracy: ± 5% ±0.3℃ Cable length: 5 meters as standard Measuring environment: temperature 0~50℃ (no freezing), <0.2MpaWaterproof level: IP68Installation method: immersion installation, NPT3/4 threadSelf-cleaning function: with automatic cleaner to prevent biological attachment and avoid light window pollution to ensure long-term monitoring is still stable; automatic cleaning time and cleaning times can be set, power consumption 0.7W
Electrical conductivity EC	Measuring principle: contact electrode method Signal mode: RS485 (MODBUS-RTU) Measuring range: 0~5000 us/cm Resolution: 1 us/cm Measuring accuracy: ± 1.5% ±0.1℃ Cable length: 5 meters as standard Measuring environment: Temperature 0~50℃ (no freezing), <0.2Mpa Waterproof level: IP68 Installation method: Immersion installation, NPT3/4 thread
Dissolved oxygen DO	Measuring principle: fluorescence lifetime method Signal mode: RS485 (MODBUS-RTU) Measuring range: 0~20mg/LResolution : 0.01mg/LMeasuring accuracy: ± 2% ±0.3℃ Cable length: 5 meters as standard Measuring environment: Temperature 0~50℃ (no freezing), <0.2MpaWaterproof level: IP68Installation method: Immersion installation, NPT3/4 thread
Suspended solids SS	Measuring principle: scattered light method Signal mode: RS485 (MODBUS-RTU) Measuring range: 0~2000mg/LResolution : 0.1mg/LMeasuring accuracy: ± 5% (depending on sludge homogeneity) Cable length: 5 meters as standard Measuring environment: temperature 0~50℃ (no freezing), <0.2MpaWaterproof level: IP68Installation method: immersion installation, NPT3/4 thread
TurbidityTU	Measuring principle: scattered light method Signal mode: RS485 (MODBUS-RTU) Measuring range: 0~40NTU 0~1000NTU 0~3000NTU Resolution: 0.1NTU Measuring accuracy: ± 1% ±0.3℃ Cable length: standard 5 meters Measuring environment: temperature 0~50℃ (no freezing), <0.2Mpa Waterproof level: IP68 Installation method: immersion installation, NPT3/4 thread
Ammonia nitrogen	Measuring principle: ion selective electrode method Signal mode: RS485 (MODBUS-RTU) Measuring range: 0-100mg/l Resolution: 0.01mg/l Measuring accuracy: ±1mg Cable length: 5 meters as standard Measuring environment: Temperature 0~50℃ (no freezing), <0.2Mpa Waterproof level: IP68 Installation method: Immersion installation, NPT3/4 thread
Chlorophyll	Measuring principle: fluorescence method Signal mode: RS485 (MODBUS-RTU) Measuring range: 0-400ug/LResolution : 0.01ug/LMeasuring accuracy: R2>0.999Cable length: 5 meters as standard Measuring environment: temperature 0~50℃ (no freezing), <0.2MpaWaterproof level: IP68Installation method: immersion installation, NPT3/4 threadSelf-cleaning function: with automatic cleaner to prevent biological attachment and avoid light window pollution to ensure long-term monitoring is still stable; automatic cleaning time and cleaning times can be set, power consumption 0.7W