Product Introduction
The DS500 is an in-situ water quality sonde based on advanced sensor technology. It can be used portably in the field or deployed long-term for online monitoring of various parameters, including temperature, depth, conductivity (specific conductivity, salinity, TDS, resistivity, density), pH, ORP (oxidation-reduction potential), dissolved oxygen, turbidity, chlorophyll, blue-green algae, oil in water, ammonium ions, and more. With a compact diameter and a wide range of measurement parameters, it is widely applicable in various water quality testing scenarios, including marine, surface water/groundwater, aquaculture, environmental protection, and water supply and drainage.
Product Features
Titanium alloy material for higher hardness, lighter weight, and better corrosion resistance.
Replaceable battery design with indicator light, especially convenient for field operations.
Single cable multi-host cascading allows simultaneous measurement of more water quality parameters or those at different water profiles.
The same instrument has measurement/storage/calibration modes.
Bluetooth connection to a mobile app (with accompanying app).
Equipped with a low-flow sampling system for groundwater and profile monitoring sampling functions.
High reliability testing and evaluation system, stable measurements, and strong anti-interference capability.
Uses RS485 interface and standard Modbus RTU protocol for real-time data transmission.
Strong expandability, with interchangeable sensors that can be freely combined and easily replaced, plug-and-play, allowing multiple sensors to be installed simultaneously.
Customizable high-strength cables with quick-release twist-lock connectors for efficient field operations.
Electric cleaning brush ensures the measurement window is clean, preventing microbial growth and reducing labor costs.
Compact structure with strong portability, minimum diameter of 49 mm, suitable for installation in smaller spaces.
Wide application range, suitable for portable field use or long-term deployment for online monitoring.
Sensor | Measurement Method | Applicable water depth | Measurement Range | Accuracy | Resolution | Display Units |
Temperature | Thermistor Method | 0-100 m | -5 to +70°C | ±0.1°C | 0.01°C | ℃、℉ |
Depth | Piezoresistor Method | 0-100 m | 0-100 m (can be 20 m, 20 m, 30 m) | ±0.25%F.S | 1mm | μs/cm,mS/cm |
Conductivity/Temperature | Four-electrode Method | 0-100 m | 0-200,000 µS/cm; 0-300,000 µS/cm(typical value) | ±0.5% of reading or ±1μS/cm | 0.01μS/cm | μS/cm,mS/cm |
Salinity | Export/Calculate Parameters | 0-180PSU | ±1% or ±0.1, whichever is greater | 0.01ppt | ppt,PSU | |
Total Dissolved Solids | 0-130ppt | ±1% of reading | 0.01ppt | ppt,ppm | ||
Density | - | ±1% of reading | - | g/L,kg/L | ||
Resistivity | 0-2000,000Ωcm | ±1% of reading | 0.01Ωcm | MΩcm,KΩcm,Ωcm | ||
Dissolved Oxygen/Temperature | Fluorescence Quenching Method | 0-50m | RDO Concentration：0-50 mg/L | 0-20mg/L:±0.2mg/L 20-50mg/L:±5%(typical value) | 0.01mg/L | mg/L |
| 0-50m | RDO Saturation:0-500% | 0-200%:±1% 2005-500%:±5%(typical value) | 0.01% | % | ||
Turbidity | ISO-7027 Method | 0-100m | 0-4000 NTU | 0-10NTU:±0.1 NTU 10-100NTU:±2% of reading or ±1NTU 100-4000NTU:±5% of reading | 0.01NTU | NTU,FNU,ppt |
Total Suspended Solids | Export/Calculate Parameters | 0-1500mg/L | ±5% of reading | 0.1mg/L | mg/L,ppt | |
pH | Electrode method | 0-50m | 0-14 | ±0.1 | 0.01 | - |
ORP | Electrode Method | 0-50m | -200 ~ +2000 mV | ±5 mV (standard solution) | 0.01mV | mV |
Chlorophyll a | Fluorescence Method | 0-100m | 0-500 μg/L | Serial dilution of chlorophyll a equivalent concentration from 0-500 μg/L of Rhodamine WT solution, R² > 0.999. | 0.01μg/L | μg/L,cell/L |
(Blue-green algae) | Fluorescence Method | 0-100m | 0-100 µg/L | Serial dilution of Rhodamine WT solution with an equivalent concentration of 100μg/L PE, R² > 0.999 | 0.01μg/L | μg/L,cell/L |
(Blue-green algae) phycocyanin | Fluorescence Method | 0-100m | 0-100 µg/L | Serial dilution of Rhodamine WT solution with an equivalent concentration of 100μg/L PC, R² > 0.999. | 0.01μg/L | μg/L,cell/L |
Suspended Solids | Backscatter 45° | 0-100m | 0-1000 mg/L | 0-100mg/L:0.1mg/L or ±2% ,whichever is greater 100-1000mg/L: ±5% of reading | 0.01mg/L | mg/L,NTU |
fDOM | Fluorescence Method | 0-100m | 0-500 ppm | Serial dilution of 0 - 200 ppm quinine sulfate solution, R² > 0.99 | 0.01ppm | ppm |
COD | UV Method | 0-100m | 0.1-200 mg/L (equiv. KHP) | ±2% of reading or 0.5mg/L (equiv. KHP), whichever is greater | 0.01mg/L (equiv. KHP) | mg/L |
Oil in water | Fluorescence Method | 0-100m | 0-200 ppm | ±3% full scale | 0.01ppm | ppm |
Silver Ion | Ion Electrode Method | 0-15m | 0-100,000 ppm | ±10% of reading or 2mg/L, whichever is greater | 0.01ppm | mg/L,ppm |
Sulfide Ion | Ion Electrode Method | 0-15m | 0-30,000 ppm | ±10% of reading or 2mg/L, whichever is greater | 0.01ppm | mg/L,ppm |
Fluoride Ion | Ion Electrode Method | 0-15m | 0-1000 ppm | ±10% of reading or 2mg/L, whichever is greater | 0.01ppm | mg/L,ppm |
Ammonium Ion | Ion Electrode Method | 0-15m | 0-1000 ppm | ±10% of reading or 2mg/L, whichever is greater | 0.01ppm | mg/L,ppm |
Ammonia Nitrogen | Export/Calculate Parameters | 0-15m | 0-200mg/L | ±10% of reading or 2mg/L, whichever is greater | 0.01ppm | mg/L,ppm |
Sulfate Ion | Ion Electrode Method | 0-15m | 0-1000ppm | ±10% of reading or 2mg/L, whichever is greater | 0.01ppm | mg/L,ppm |
Bromide Ion | Ion Electrode Method | 0-15m | 0-1000ppm | ±10% of reading or 2mg/L, whichever is greater | 0.01ppm | mg/L,ppm |
Iodide Ion | Ion Electrode Method | 0-15m | 0-1000ppm | ±10% of reading or 2mg/L, whichever is greater | 0.01ppm | mg/L,ppm |
Cadmium Ion | Ion Electrode Method | 0-15m | 0-10,000ppm | ±10% of reading or 2mg/L, whichever is greater | 0.01ppm | mg/L,ppm |
Lead Ion | Ion Electrode Method | 0-15m | 0-20,000ppm | ±15% of reading or 5mg/L, whichever is greater | 0.01ppm | mg/L,ppm |
Chloride Ion | Ion Electrode Method | 0-15m | 0-1000ppm | ±10% of reading or 2mg/L, whichever is greater | 0.01ppm | mg/L,ppm |
Potassium Ion | Ion Electrode Method | 0-15m | 0-1000ppm | ±10% of reading or 2mg/L, whichever is greater | 0.01ppm | mg/L,ppm |
Copper Ion | Ion Electrode Method | 0-15m | 0-5000ppm | ±10% of reading or 2mg/L, whichever is greater | 0.01ppm | mg/L,ppm |
Calcium Ion | Ion Electrode Method | 0-15m | 0-1000ppm | ±10% of reading or 2mg/L, whichever is greater | 0.01ppm | mg/L,ppm |
Cyanide Ion | Ion Electrode Method | 0-15m | 0-250ppm | ±10% of reading or 2mg/L, whichever is greater | 0.01ppm | mg/L,ppm |
Model | Outer Dimensions | Weight | Operating Temperature | Storage Temperature | Waterproof Rating | Communication Protocol | Power Supply Voltage | Plug and play Sensor Slots | Power Consumption |
DS500 | Diameter 4.9 cm, Length 49 cm
| 1.25 kg | -5 to +70°C
| -40 to +70°C | IP68
| RS485,Bluetooth
| 12-24V
| 4 | Measurement:60 mA typical,120 mA Max |
DS501 | Diameter 5,7cm, Length 49 cm | 1.50kg | -5 to +70°C
| -40 to +70°C | IP68
| RS485,Bluetooth
| 12-24V
| 5 | Measurement:65 mA typical,120 mA Max |
DS502 | Diameter 7.5 cm, Length 49 cm | 2.30kg | -5to+70°C
| -40 to +70°C | IP68
| RS485,Bluetooth
| 12-24V
| 6 | Measurement:80 mA typical,120 mA Max |
