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.
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 |
