YSI ProDSS Multiparameter Digital Water Quality Meter

Area Monitoring Datalogging
Water Quality Meter Manufacturer: YSI
YSI ProDSS Multiparameter Digital Water Quality Meter
YSI ProDSS Multiparameter Digital Water Quality Meter
YSI ProDSS Multiparameter Digital Water Quality Meter

COMING SOON! Please call 866-736-8347 to coordinate rental and confirm lead times.

The YSI ProDSS is a rugged, user-friendly handheld multiparameter water quality meter built around a 4-port cable assembly. The conductivity and temperature sensor is required on every rental and ships installed in one port, leaving three ports open for any combination of optical dissolved oxygen, pH/ORP, turbidity, and ion selective smart sensors. Each sensor stores its own traceable calibration, so it can be moved between ports or instruments without recalibrating.

YSI specifies that a conductivity and temperature sensor must be installed for accurate measurement of every ProDSS parameter except turbidity. Temperature compensation depends on it, and the salinity value it produces is what the instrument uses to calculate dissolved oxygen in mg/L and to run the ammonium, nitrate, and chloride algorithms. Every ProDSS rental from RAECO Rents includes it as standard, whatever else you are measuring.

This unit has a rechargeable lithium-ion battery pack delivering roughly 48 hours of run time and over 100,000 data sets of onboard memory alongside 400 GLP files. Data moves to Kor Software for Windows or Kor Mobile for iOS and Android over built-in micro USB.

Contact Us for Rental Information
This equipment is part of a specialized system and may not be available for individual rental. Please contact our rental specialists to discuss your project requirements and available options.
Call 866-736-8347
See more product details
Can I use the ProDSS for unattended long-term logging?
It supports continuous logging, but battery life is the practical limit: roughly 48 hours for the handheld alone and closer to 20 hours with a full sensor array. It is built for spot checks, well purging, and vertical profiling rather than multi-week deployment. For unattended monitoring, ask us about a deployable sonde.
Can the ProDSS measure ammonium, nitrate, or chloride?
Yes, using ion selective electrode sensors, but they carry limits the other sensors do not: freshwater only, a 20 meter maximum depth, and a sensor module life of roughly three to six months. They also need a chilled third calibration point when sample temperature varies widely across the job.
Is the YSI ProDSS intrinsically safe?
No. The ProDSS carries CE, RoHS, WEEE, FCC, and an IP-67 rating, but no intrinsic safety or hazardous location certification. Do not use it in classified areas, and never let it substitute for IS-certified atmospheric monitoring during a confined space entry.
Can I use ProDSS turbidity readings for drinking water compliance reporting?
No. The ProDSS turbidity sensor uses ISO 7027 optics and reports in FNU, while the methods approved for Safe Drinking Water Act filter compliance at 40 CFR 141.74(a)(1) report in NTU. Use it for surface water, stormwater, dredging, and process screening, and confirm your required method before renting.
Is the ProDSS optical dissolved oxygen sensor EPA approved?
For wastewater, yes. It meets ASTM Method D888-09 (C) under 40 CFR 136.3 Table IB, and the same sensor covers BOD and CBOD under Standard Methods 5210 B-2001. It is not approved for drinking water compliance reporting.
How often does the ProDSS need recalibrating in the field?
Conductivity and turbidity typically hold for several weeks. pH and ORP hold for days. Optical dissolved oxygen should be calibrated daily. Verify every sensor on each day of use, and note that dissolved oxygen and pH samples must be analyzed within 15 minutes of collection.
Does the ProDSS optical dissolved oxygen sensor need membrane changes?
No. It uses a luminescent sensor cap, so there is no membrane to replace, no electrolyte to top up, and no stirring requirement. Readings stabilize almost immediately after power-on, and the cap is replaced roughly annually rather than maintained in the field.
What cable length does the ProDSS rental come with?
A 4 meter cable, which is what RAECO Rents stocks. That reaches most manholes, lift stations, shallow wells, tanks, and surface water grab points. It is not enough for deep well or reservoir profiling, so tell us your target depth when you book and we will confirm the ProDSS is the right fit before it ships.

Exposure Hazards This Equipment Detects

Dissolved Oxygen (DO (mg/L, % air saturation))

CAS: N/A
PEL TWA
N/A
REL TWA
N/A
TLV TWA
N/A

pH (pH units (0 to 14))

CAS: N/A
PEL TWA
N/A
REL TWA
N/A
TLV TWA
N/A

ORP (Oxidation-Reduction Potential) (ORP (mV))

CAS: N/A
PEL TWA
N/A
REL TWA
N/A
TLV TWA
N/A

Conductivity & Salinity (µS/cm, mS/cm, ppt, PSU)

CAS: N/A
PEL TWA
N/A
REL TWA
N/A
TLV TWA
N/A

Turbidity (Turbidity (FNU, NTU))

CAS: N/A
PEL TWA
N/A
REL TWA
N/A
TLV TWA
N/A

Features & Capabilities

Calibration Certificate Available: ✓ Yes
Datalogging: ✓ Yes
Monitoring Scope: Area Monitoring

Equipment Specifications

Component Role: Base instrument — 4-port cable assembly accepts any four ProDSS digital smart sensors in any port configuration
Sensor-Dependent Specifications: Measured parameters, ranges, resolutions and accuracies are determined entirely by which sensors are fitted. See the interchangeable module specifications below.
Detection Method / Sensor Type: Digital smart sensors with universal ports — optical dissolved oxygen, conductivity/temperature, pH, pH/ORP, turbidity, ammonium, chloride and nitrate ISE, and total algae. Sensors are auto-recognized on installation and store their own traceable calibration, so they can be moved between ports or instruments without recalibrating.
Connectivity: Built-in micro USB On-The-Go port for PC connection, charging, and direct USB stick transfer, Kor Software for Windows, Kor Mobile for iOS and Android, Optional ProDSS KorLink Bluetooth adapter
Display: Color LCD graphic display, 3.9 x 6.5 cm, with backlit keypad
Probe/Accessory Options: 4-port field cable, 4 meter length. Handheld includes internal GPS.
Operating Temperature Range: 0 to 50 °C (32 to 122 °F)
Storage Temperature Range: 0 to 45 °C with battery installed; 0 to 60 °C without battery installed
Water/Dust Ingress Rating: IP-67; floats, including with the battery cover off
Data Storage Capacity: Greater than 100,000 data sets plus 400 GLP files; single-point or continuous logging
Battery Run Time: Rechargeable lithium-ion battery pack, approximately 48 hours (instrument only, backlight off)
Size / Weight: Instrument 8.3 x 21.6 x 5.6 cm (3.25 x 8.5 x 2.21 in); 567 g (1.25 lb) with batteries
Certifications: RoHS, CE, WEEE, FCC, UN Part III Section 38.3 lithium-ion battery test methods (Class 9), IP-67, 1-meter drop test, assembled in USA
Manufacturer Part Number: 626870-2 (handheld with GPS)

Interchangeable Module Specifications

Key specifications are determined by which of the 4 modules below is fitted. Select one when configuring your rental. Expand any module to view its specifications.

Conductivity & Temperature

Four-nickel-electrode cell with integral thermistor
Range
0 to 200 mS/cm; -5 to 70 °C
Resolution
0.001 to 0.1 mS/cm; 0.1 °C
Accuracy
±0.5% of reading; ±0.2 °C
Measures
Conductivity, Salinity, TDS, Temperature

Optical Dissolved Oxygen (ODO)

Optical luminescence, lifetime method
Range
0 to 50 mg/L; 0 to 500% sat.
Resolution
0.1 or 0.01 mg/L
Accuracy
±0.1 mg/L or ±1% of reading
Measures
Dissolved oxygen

pH & ORP

Glass bulb combination electrode; platinum button with Ag/AgCl reference
Range
0 to 14 pH; -999 to 999 mV
Resolution
0.01 pH; 0.1 mV
Accuracy
±0.2 pH; ±20 mV
Measures
pH, ORP

Turbidity

Nephelometric, optical 90° scatter
Range
0 to 4000 FNU
Resolution
0.01 FNU
Accuracy
0.3 FNU or ±2% of reading
Measures
Turbidity, TSS (correlated)

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