Portable Multi-parameter Water Quality Meter

1. Product Introduction
The SS03A portable multi-parameter water quality meter is an electrode-based water quality analysis instrument that uses fully digital electrode detection to detect water quality, water temperature, orp, and pH parameters. The instrument is equipped with a self-developed ftiot operating system, which is simple to operate, stable in performance, accurate in measurement, and has a wide detection range. It has a built-in high-capacity rechargeable lithium battery, which is convenient for users to conduct water quality testing at any time in the field or laboratory.

2. Host parameters
Charging input voltage 4.5V-5.5V
Charging current <2A
Screen size 3.5 inches
Screen resolution 480*800 ☆
Screen interface MIPI DSI ☆
USB interface 2 (supports external mouse, keyboard, 4G, etc.) ☆
Type-C 1 (supports external mouse, keyboard, 4G, etc.) ☆
RS485 2 (supports Modbus, json, asc input, etc.)
External sensor power supply voltage 12V
External sensor power supply current 1A
Operating system ftiot (based on Linux-5.4) ☆
CPU 2*Cotex-A7, 650Mhz ☆
RAM 512M DDR3 ☆
Flash 8G-64G
OpenGL ES 2.0 ☆
Wifi support
4G optional
Button support
Capacitive touch screen support
Software architecture B/S ☆
Web access support ☆
MTP mode support ☆
Multi-terminal login Support ☆
IPV6 Support ☆
Sensor communication mode RS485, TCP, UDP, Http ☆
Data forwarding mode RS485, TCP, UDP, Http ☆
Remote SSH Support ☆
Remote debugging Support ☆

Sensor parameters and configuration
No.        Name                  Measurement range              Principle                                             Measurement accuracy            Configuration             Remarks
1           Temperature         0~50℃                                  High-precision digital sensor                       ±0.3℃                                ✔     
2           pH                         0~14 (ph)                              Electrochemical (salt bridge)                        ± 0.1PH                              ✔
3           ORP                       -1500mv~1500mv                Electrochemical (salt bridge)                        ± 6mv                                 ✔
4           Conductivity          0~5000uS/cm,0~10000uS/cm Contact electrode method                        ± 1.5%

5           TDS                        0～20 μS/cm (TDS 0-10 mg/L) Contact electrode method                      ±1.5%

6           Salinity                   0-2.5ppt or 0-80ppt                 Contact electrode method                      ±0.05ppt or ±1ppt

7           Sludge concentration 0-20.000g/L                         Scattered light method                            ±5% (depending on sludge homogeneity)

8           Turbidity                0-40NTU (low turbidity)            Scattered light method                           ± 1%
                                                                                                                                                                                                                                    Optional
                                           0-1000NTU (medium turbidity) Scattered light method                            ± 1%
                                           0-3000NTU (high turbidity)       Scattered light method                            ± 1%
9           Dissolved oxygen  0-20mg/L                                   Fluorescence lifetime method                 ± 2%

10         Ammonia nitrogen 0-100mg/l                                 Ion selective electrode method               ±1mg

11         Suspended matter 0-2000mg/L                               Scattered light method                            ±5% (depending on sludge homogeneity)

12         Residual chlorine   0~5.00 mg/L                               Ion selective electrode method               ±5% of reading                          The best accuracy is achieved when the flow rate is 0.42m/s-0.85m/s
13         Chloride ion 0-3500.0mg/L                                       Ion selective electrode method ±5%
14         Total hardness       0～1000.0mg/L Ion selective electrode method                                          ±10% of reading
15          cod                       0~500mg/ L                                 UV254 absorption method                      ±5%                                             COD and chlorophyll are equipped with automatic cleaners to prevent biological attachment and avoid light window pollution to ensure long-term monitoring is still stable; the automatic cleaning time and cleaning times can be set, and the power consumption is 0.7W
16          Chlorophyll          0~400ug/L                                   Fluorescence method                                 R2>0.999

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