YSI ProDSS - Digital Sampling System

The YSI ProDSS - Digital Sampling System - is the ultimate water quality field instrument for sampling and profiling. With the ProDSS, we have answered our customer's demands to produce a truly rugged, reliable and smart multiparameter handheld instrument.

  • Features
  • Advantages
  • Specifications
  • Ordering Guide
  • Documents

What are they all talking about?  The new YSI ProDSS - digital sampling system

The YSI ProDSS (digital sampling system) is a portable water quality multiparameter instrument for the measurement of several critical parameters - dissolved oxygen (optical), turbidity, pH, ORP, conductivity, specific conductance, salinity, TDS, resistivity, TSS, Chlorophyll, Blue Green Algae, ammonium, ammonia, chloride, nitrate, depth, temperature and GPS coordinates.

With digital sensor technology and the ability to measure 19 different parameters, the ProDSS is ideal for nearly any application - surface water, groundwater, coastal waters, aquaculture, and wastewater. Featuring turbidity, optical dissolved oxygen and depth sensors along with our durable field-ready design, the ProDSS will provide accurate data even in the harshest applications. Choose the ProDSS, when the environment demands it.

Featuring an easy-to-read backlit colour 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 allows for complete customization of the ProDSS.  Military spec connectors, IP67 waterproof, rubber over-molded case and 1-meter drop tests ensures durability to provide years of sampling even in the harshest field conditions.

The multiparameter ProDSS is loaded with many features that are truly revolutionary in spot sampling and profiling.

These features include:

• Single cable design with depth option - universal ports can accept any 4 sensors
• Long-life rechargeable lithium-ion battery to power handheld and sensors
• Colour display and backlit keypad allow for sampling in all lighting conditions
• Digital smart sensors are auto-recognized by the instrument and store calibration data
• User-replaceable cables and sensors provide versatility, reduce down time and reduce
overall cost of ownership
• Large memory (> 100,000 data sets) with site list and Data ID tag capabilities
• KorDSS, a powerful data management software with geo-mapping capability, is
included with the instrument
• USB On-The-Go connector for PC connection, recharging/powering the ProDSS and
connecting directly to a USB stick
• Global Positioning System (GPS) (optional)
• Cable lengths up to 100 meters available with or without a depth sensor
• 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 in handheld and KorDSS: English, Spanish, Portuguese, French,
German, Italian, Japanese, Norwegian, and Chinese (simplified and traditional)
• Warranty: 3-year instrument; 2-year cable assembly and sensors; 1-year pH and pH/
ORP sensor modules; 6-months ammonium, nitrate and chloride sensor modules.

The ProDSS has many advantages.

1) Digital instrument with smart sensors that retain calibration status.

2) True multiparameter instrument - turbidity, dissolved oxygen (optical- based), depth, pH, pH/ORP, conductivity, Chlorophyll, Blue-Green Algae, ammonium, nitrate, and chloride sensors plus other calculated parameters. Single cable design features universal ports which can accept any 4 sensors plus depth.

3) Color display, backlit keypad, GPS (optional), and a rechargeable lithium-ion battery make the ProDSS truly unique – no other handheld instrument has all of these features.

4) An extensive memory allows the user to save > 100,000 data sets with site list and data ID tag information plus 400 GLP (calibration) records. Data can easily be transferred to KorDSS, a powerful data management
PC program included with the instrument, or backed up to USB memory stick via the built-in, waterproof USB On-The-Go port.

5) Designed for demanding field work:

-Titanium sensors can easily be replaced in the field and have a 2 year warranty (pH and pH/ORP
sensing modules have a 1 year warranty, ISE sensing modules have a 6 month warranty).
-Instrument cables have an industry-leading 2-year warranty
-Rugged, waterproof military spec connectors
-Durable enclosure with rubber over-molded waterproof (IP-67) case

 ProDSS Instrument General Specifications

Barometer Built-in barometer
Certifications RoHS, CE, WEEE, FCC, IP-67, 1-meter drop test, UN Part III Section 38.3 test methods for lithium-ion batteries (class 9), Assembled in USA
Connectivity Built-in micro USB port
Connector MS (military spec) waterproof with quarter-turn bayonet lock (unsurpassed in regards to durability)
Data Management

KorDSS desktop PC software (included)

Data Memory >100,000 data sets; 400 GLP files
Dimensions 8.3 cm width x 21.6 cm length x 5.6 cm depth (3.25 in x 8.5 in x 2.21 in)
Display Color, LCD graphic display; backlit keypad
Cables With or without depth sensors in lengths of 1, 4, 10, 20, 30, 40, 50, 60, 70, 80, 90 and100-meters;  10, 20 and 30-meter cables include a cable management kit; all cables 10-meters and longer include a 1 lb weight
Flow Cell Yes; flow cell is available
GLP Compliance Yes; detailed GLP information is stored and is available to view, download or print
Languages English, Spanish, German, French, Italian, Norwegian, Portuguese, Japanese, Chinese (Simplified & Traditional)
Logging Modes Single point or Continuous
Operating Temperature 0 to 50°C (32 to 122°F)
Power Rechargeable lithium-ion battery pack providing ~48 hours of battery life (instrument only with backlight off)
Storage Temperature

0 to 45°C (32 to 113°F) with battery installed

0 to 60°C (32 to 140°F) without battery installed

Sites and Data ID 100 user-defined sites and 100 user-defined data ID tags
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 IP-67 (even with the battery cover off); floats

Meter Weight with Batteries

Bulkead Weight with 4 Sensors

567 grams (1.25 lbs)

680 grams (1.5 lbs) with sensor guard on; 589 grams (1.3 lbs) without sensor guard

GPS Optional internal GPS; coordinates are stored with measurement data and site lists
Sensor Ports 4 universal sensor ports on each cable; can accept and ProDSS sensor


ProDSS System Specifications (Instrument, Cables & Sensors)

Sensor Type Range Accuracy Resolution Units MaximumDepth Warranty
Dissolved Oxygen (%) 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) % saturation 100 m 2 years DO sensor
1 year DO sensor cap
Dissolved Oxygen (mg/L) (temp comp range -5 to 50°C) 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) mg/L, ppm 100 m 2 years DO sensor 1 year DO sensor cap
Temperature -5 to 70°C (23 to 158°F) ±0.2°C 0.1°C or 0.1°F (user selectable) °C, °F, K 100 m 2 years
Turbidity 0 to 4000 FNU 0 to 999 (0.3 or ±2% of reading, whichever is greater)1000 to 4000 (±15% of reading) 0.1 FNU FNU, NTU - 2 years
Conductivity* 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) µS, mS 100 m 2 years
Specific Conductance 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 µS, mS - -
Resistivity 0 to 2 Mohms ±0.1% Full Scale 0.001, 0.01, 0.1 ohms ohm-cm, kohm-cm, Mohm-cm - -
Salinity 0 to 70 ppt ±1.0% of reading or ±0.1 ppt, whichever is greater 0.01 ppt ppt, PSU - -
Water Density 0.0 to 50.0 sigma, sigma T - 0.1 sigma or sigma T Sigma, Sigma T - -
pH 0 to 14 units ±0.2 units 0.01 units mV, pH units 100 m 2 years for pH and pH/ORP sensors 1 year for pH and pH/ORP sensor modules
ORP --1999 to +1999 mV ±20 mV 0.1 mV mV 100 m 2 years for pH and pH/ORP sensors 1 year for pH and pH/ORP sensor modules
Ammonium** (ammonia with pH sensor) 0 to 200 mg/L NH4-N ±10% of reading or 2 mg/L, whichever is greater 0.01 mg/L NH4-N mg/L, NH4-N mV 20 m 2 years for ammonium sensor6 months for ammonium sensor module
Ammonia*** 0 to 200 mg/L NH4-N - 0.01 mg/L NH3-N mg/L - -
Nitrate** 0 to 200 mg/L NO3-N ±10% of reading or 2 mg/L, whichever is greater 0.01 mg/L NO3-N mg/L, NO3-N mV 20 m 2 years for nitrate sensor6 months for nitrate sensor module
Chloride** 0 to 18000 mg/L Cl ±15% of reading or 5 mg/L, whichever is greater 0.01 mg/L Cl mg/L, Cl mV 20 m 2 years for chloride sensor6 months for chloride sensor module
Total Dissolved Solids (TDS) 0 to 100 g/L User-Selectable TDS Multiplier (0.30 to 1.00; 0.65 default) 0.001, 0.01, 0.1g/L mg/L, kg/L, g/L - -
Total Suspended Solids (TSS) 0 to 30000 mg/L Calculated from Turbidity and User-Entered Correlation Points 0.01, 0.1 mg/L mg/L - -
Depth 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 m, ft - 2 years
Barometer 375 to 825 mmHg ±1.5 mmHg from 0 to 50°C 0.1 mmHg mmHg, inHg, mbar, psi, kPa, ATM - 3 years

Ordering Guide

Step 1: Order Instrument
Item # Description
626870-1 Instrument without GPS; includes rechargeable lithium-ion battery (pre-installed), hand strap, USB cable, universal AC adapter, micro USB to USB adapter cable, ProDSS quick start guide, and USB memory stick containing KorDSS software and digital copy of the entire manual
626870-2 Instrument with GPS; includes rechargeable lithium-ion battery (pre-installed), hand strap, USB cable, universal AC adapter, micro USB to USB adapter cable, ProDSS quick start guide, and USB memory stick containing KorDSS software and digital copy of the entire manual 
Step 2: Order Cable(s)
Cables do not include temperature sensor; all cables include 4 sensor ports and a maintenance kit (3 port plugs, tube of Krytox lubricant, brush for conductivity probe, syringe for depth sensor cleaning, and sensor installation/removal tool). A 1 lb weight is included with all cables 10 meters and longer while 10, 20 and 30-meter cables include a cable management kit.
626909 No depth sensor; 1, 4, 10, 20, 30, 40, 50, 60, 70, 80, 90 or 100-meters (indicate cable length when ordering, example 626909-10 to indicate the 10-meter option)
626910 Depth sensor integrated; 1, 4, or 10-meters (indicate cable length when ordering, example 626910-4 to indicate the 4-meter option)
626911 Depth sensor integrated; 20, 30, 40, 50, 60, 70, 80, 90 or 100-meters (indicate cable length when ordering, example 626911-50 to indicate the 50-meter option)
Step 3: Order Digital, Smart Sensors
626900 digital, smart optical dissolved oxygen sensor
626901 digital, smart turbidity sensor
626902 digital, smart combination conductivity/temperature sensor (for highest accuracy always install a conductivity/temp sensor to compensate all measurement data for temp and DO data for conductivity)
626903 digital, smart pH sensor with replaceable module attached
626904 digital, smart combination pH/ORP sensor with replaceable module attached
626905 digital, smart nitrate sensor with replaceable module attached
626906 digital, smart ammonium sensor with replaceable module attached
626907 digital, smart chloride sensor with replaceable module attached
Step 4: Order Solutions
065270 Conductivity calibrator, 1000 µmhos/cm (quart, glass); ideal for fresh water
065272 Conductivity calibrator, 10000 µmhos/cm (quart, glass); ideal for brackish water
065274 Conductivity calibrator, 100000 µmhos/cm (quart, glass); ideal for supersaturated sea water
060907 Conductivity calibrator, 1000 µmhos/cm (8 each, pint, plastic); ideal for fresh water
060906 Conductivity calibrator, 1413 µmhos/cm, ±1%, 0.01 M KCl (8 each, pint, plastic)
060911 Conductivity calibrator, 10000 µmhos/cm (8 each, pint, plastic); ideal for brackish water
060660 Conductivity calibrator, 50000 µmhos/cm (8 each, pint, plastic); ideal for sea water
603824 pH buffers, 2 pints each of 4, 7, and 10 buffers (plastic)
003821 pH buffer, 6 pints of 4 buffer (plastic); ideal for storage solution for pH sensor
003822 pH buffer, 6 pints of 7 buffer (plastic)
003823 pH buffer, 6 pints of 10 buffer (plastic)
061320 ORP (mV) calibrator, Zobell solution, powder - needs hydrated (125 mL bottle)
608000 Turbidity standard, 0 FNU (1 gallon, 3.78 l)
607200 Turbidity standard, 12.4 FNU (1 gallon, 3.78 l)
607300 Turbidity standard, 124 FNU (1 gallon, 3.78 l)
607400 Turbidity standard, 1010 FNU (1 gallon, 3.78 l)
003841 Ammonium standard, 1 mg/L (500 mL)
003842 Ammonium standard, 10 mg/L (500 mL)
003843 Ammonium standard, 100 mg/L (500 mL)
003885 Nitrate standard, 1 mg/L (500 mL)
003886 Nitrate standard, 10 mg/L (500 mL)
003887 Nitrate standard, 100 mg/L (500 mL)
005580 Confidence Solution to verify pH, ORP and conductivity data (not for calibration)
Step 5: Order Accessories
626946 Large, hard sided carrying case 
603075 Large, soft-sided carrying case
626945 Small, hard-sided carrying case (1- and 4-meter cables)
599080 Flow cell
603056 Flow cell mounting spike
063507 Tripod (screws into back of meter)
063517 Ultra clamp (screws into back of meter)
603070 Shoulder strap
603069 Belt clip (screws into back of meter)
626942 USB car charger
626943 Small external battery pack. Will typically recharge battery to ~50% when completely discharged.
626944 Large external battery pack. Will typically recharge battery and charge second battery to ~20%.
626940 AC charger (USA). Includes power supply and USB cable. (included with ProDSS meter)
626941 AC charge (international). Includes power supply, USB cable and outllet adapters. (included with ProDSS meter)
626846 Replacement Lithium-ion battery pack
626969 ProDSS USB flash drive (included with ProDSS meter)
626991 Cable for charging and PC connection (included as part of 626940 and 626941 and included with ProDSS meter)
626992 Cable for connection to USB drive (included with ProDSS meter)
626990 Cable maintenance kit; 3 port plugs, 1 Krytox tube, 1 brush, 1 syringe, 1 sensor install/removal tool, 6 o-rings (included with all cables)
626919 Probe guard kit
599786 Calibration/storage cup
603062 Cable management kit (included with any cable 10, 20, or 30-meters long
626918 1 lb weight (included with any cable 10-meters and longer)
605978 4.9 oz weight
626890 Replacement optical DO sensor cap
626963 Replacement pH electrode module
626964 Replacement pH/ORP electrode module
626965 Replacement nitrate electrode module
626966 Replacement ammonium electrode module
626967 Replacement chloride electrode module