ProDSS Multiparameter Water Quality Meter

This post is also available in: viVietnamese

The YSI ProDSS (digital sampling system) is a portable water quality multiparameter instrument for the measurement of several critical parameters – dissolved oxygen (optical), total algae, turbidity, pH, ORP, conductivity, specific conductance, salinity, TDS, resistivity, TSS, ammonium, ammonia, chloride, nitrate, depth (optional), temperature and GPS coordinates.
Designed for use in applications such as surface water, groundwater, coastal/estuarine, aquaculture, and wastewater, the rugged and reliable ProDSS allows for the measurement of water quality parameters with digital sensors. The ProDSS uses smart sensor technology that allows sensors to be automatically recognized by the handheld while retaining calibration data.
An easy-to-read backlit color display, large memory capacity, simple calibration procedures, rechargeable battery and powerful data management program (KorDSS) all help to make your sampling experience more convenient.
The optional GPS and depth along with a wide range of cables and sensors (sold separately) allows for complete customization of the ProDSS. Military spec connectors, IP-67 waterproof rating, rubber over-molded case and 1-meter drop tests ensures durability to provide years of sampling even in the harshest field conditions.

  • Technical Data
  • Parameters Measured
  • Features
  • Applications 
  • Video
Benchtop Yes, optical BOD probe for the lab is available
Buffer Recognition Yes, auto-buffer recognition for USA (4.00, 7.00, 10.00) and NIST (4.01, 6.86, 9.18) buffer sets. Calibration values are automatically compensated for temperature for both buffer sets.
Certifications CE, Assembled in USA, WEEE, UN Part III Section 38.3 test methods for lithium-ion batteries (class 9), 1-meter drop test, RoHS, FCC, IP-67
Connectivity / Communications Built-in micro USB On-The-Go port for PC connection, recharging/powering the ProDSS and connecting directly to a USB stick
Connector MS (military spec) waterproof with quarter-turn bayonet lock (unsurpassed in regards to durability)
Data Management KorDSS desktop PC software (included), >100,000 data sets
Desktop Software Compatible KorDSS desktop PC software (included)
Digital / Digital Sensors Yes
Flow Cell flow cell is available, Yes
GLP Compliance Yes, detailed GLP information is stored and is available to view, download or print
GPS Optional internal GPS, coordinates are stored with measurement data and site lists
Graphic Display backlit keypad, Color, LCD graphic display
Languages French, Spanish, English, German, Norwegian, Japanese, Italian, Portuguese, Chinese (Simplified & Traditional)
Logging Capabilities Yes, Single point or Continuous
Measurement Method / Channels Digital
Memory 400 GLP files, >100,000 data sets
Multiparameter Yes
Operating Temperature 0 to 50°C (32 to 122°F)
Parameters Measured Dissolved Oxygen (%), Dissolved Oxygen (mg/L), Temperature, Turbidity, Conductivity, Specific Conductance, Resistivity, Salinity, Water Density, pH, ORP, Ammonium, Nitrate, Chloride, Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Depth, Barometer
Power Rechargeable lithium-ion battery pack providing ~48 hours of battery life (instrument only with backlight off)
Sampling Yes
Security / Password Protection / UserID Yes
Size Instrument: 8.3 cm width x 21.6 cm length x 5.6 cm depth (3.27 in x 8.5 in x 2.21 in)
Bulkhead with sensors, without depth (no guard): 33.3 cm (13.11 in) length – the length with the ISE sensors is 34.04 cm (13.4 in)
Bulkhead with sensors, with depth (no guard): 35.84 cm (14.11 in) length – the length with the ISE sensors is 36.58 cm (14.4 in)
Bulkhead with guard, without depth: 42.82 cm (16.86 in) length and 4.75 cm (1.87 in) outer diameter
Bulkhead with guard, with depth: 45.36 cm (17.86 in) length and 4.75 cm (1.87 in) outer diameter
Smart Sensors / Ports 4 universal sensor ports on each cable, Yes, can accept any ProDSS sensor
Storage Temperature 0 to 45°C (32 to 113°F) with battery installed0 to 60°C (32 to 140°F) without battery installed
User Calibratable Yes
User Replaceable Yes
Warranty 3-year instrument; 2-year bulkhead, cable assembly, and sensors; 1-year pH and pH/ORP sensor modules, ODO (opticalDO) sensor caps, and Li-Ion battery pack; 6-months ammonium, nitrate, and chloride sensor modules
Waterproof floats, IP-67 (even with the battery cover off)
Sensor Type Range Accuracy Resolution
Dissolved Oxygen
(% saturation)
Optical Luminescence – Lifetime Method 0 to 500% 0 to 200% (±1% of reading or 1% air saturation, whichever is greater)
200% to 500% (±8% of reading)
0.1% or 1% air saturation (user selectable)
Dissolved Oxygen (mg/L, ppm)
temp comp range -5 to 50°C
Optical Luminescence – Lifetime Method 0 to 50 mg/L 0 to 20 mg/L
(±0.1 mg/L or 1% of reading, whichever is greater)
20 – 50 mg/L (±8% of reading)
0.1 or 0.01 mg/L (user selectable)
(°C, °F, K)
Thermistor; Combination Sensor with Conductivity -5 to 70°C (23 to 158°F) ±0.2°C 0.1°C or 0.1°F (user selectable)
Nephelometric – Optical, 90° Scatter 0 to 4000 FNU 0 to 999 (0.3 or ±2% of reading, whichever is greater)
1000 to 4000 (±5% of reading)
0.1 FNU
(µS, mS)
Four Nickel Electrode Cell 0 to 200 mS/cm 0 to 100 mS/cm (±0.5% of reading or 0.001 mS/cm, whichever is greater)
100 to 200 mS/cm (±1% of reading)
0.001, 0.01 or 0.1 µS/cm (range dependent)
Specific Conductance
(µS, mS)
Calculated from Conductivity and Temperature 0 to 200 mS/cm ±0.5% of reading or 0.001 mS/cm, whichever is greater 0.001, 0.01, 0.1 mS/cm
(ohm-cm, kohm-cm, Mohm-cm)
Calculated from Conductivity and Temperature 0 to 2 Mohms ±0.1% Full Scale 0.001, 0.01, 0.1 ohms
(ppt, PSU)
Calculated from Conductivity and Temperature 0 to 70 ppt ±1.0% of reading or ±0.1 ppt, whichever is greater 0.01 ppt
Water Density
(Sigma, Sigma T)
Sigma is Calculated from Salinity, Temperature, and Pressure
Sigma T is Calculated from Salinity and Temperature
0.0 to 50.0 sigma, sigma T 0.1 sigma or sigma T
(mV, pH units)
Glass Bulb Combination Electrode; Ag/AgCl Reference Gel 0 to 14 units ±0.2 units 0.01 units
Platinum Button; Ag/AgCl Reference –1999 to +1999 mV ±20 mV 0.1 mV
(NH4-N mg/L, NH4-N mV)
ammonia with pH sensor
Ion Selective Electrode 0 to 200 mg/L NH4-N ±10% of reading or 2 mg/L, whichever is greater 0.01 mg/L
(NH3-N mg/L)
Calculated from Ammonium, Temperature, Salinity and pH 0 to 200 mg/L NH4-N 0.01 mg/L
(NO3-N mg/L, NO3-N mV)
Ion Selective Electrode 0 to 200 mg/L NO3-N ±10% of reading or 2 mg/L, whichever is greater 0.01 mg/L
Chloride** Ion Selective Electrode 0 to 18000 mg/L Cl ±15% of reading or 5 mg/L, whichever is greater 0.01 mg/L
Total Dissolved Solids (TDS)
(mg/L, kg/L, g/L)
Calculated from Conductivity and Temperature 0 to 100 g/L User-Selectable TDS Multiplier (0.30 to 1.00; 0.65 default) 0.001, 0.01, 0.1g/L
Total Suspended Solids (TSS)
Correlated from Turbidity Field Measurements and Lab TSS Measurements from Grab Samples 0 to 30000 mg/L Calculated from Turbidity and User-Entered Correlation Points 0.01, 0.1 mg/L
(m, ft)
Pressure Transducer 0 to 100 m (0 to 328 ft) ±0.004 m (±0.013 ft) for 1, 4 and 10-m cables
±0.04 m (±0.13 ft) for cables 20-m and longer
0.001 m or 0.01 ft
(mmHg, inHg, mbar, psi, kPa, ATM)
Piezoresistive 375 to 825 mmHg ±1.5 mmHg from 0 to 50°C 0.1 mmHg

  • Single cable design with lengths up to 100 meters
  • User-replaceable cables provide versatility, reduce down time and reduce overall cost of ownership
  • 4 port cables feature user-replaceable sensors; universal ports can accept any 4 sensors; optional depth sensor available (with depth and no depth)
  • ODO/CT probe and cable assemblies feature integral (built-in) optical DO and conductivity sensors; rugged ODO sensor cap with 2-year warranty is pre-installed on new assemblies; kits with an ODO/CT assembly and a ProDSS handheld are available
  • Long-life rechargeable lithium-ion battery to power handheld and sensors
  • Color display and backlit keypad; menu-driven operation
  • Digital smart sensors are automatically recognized by the instrument and store calibration data
  • Large memory (>100,000 data sets) with extensive site list and Data ID tag capabilities
  • KorDSS software (included) and USB on-the-go connector assist with data management
  • Global positioning system (GPS) (optional)
  • Rugged, waterproof case (IP-67 rated) with rubber over-mold and metal, military-spec (MS) cable connectors as well as rugged titanium sensors
  • Multiple languages: English, Spanish, Portuguese, French, German, Italian, Japanese, Norwegian, Chinese (simplified and traditional), Korean, and Thai


Check Also

Pro1020 Dissolved Oxygen and pH or ORP Instrument

This post is also available in: VietnameseThe Pro1020 provides everything you need in a handheld …

Leave a Reply

Your email address will not be published. Required fields are marked *