Used YSI 6920 V2-2 Water Quality Sonde

The YSI 6920 V2-2 sonde is an economical logging system, ideal for long-term in situ monitoring and profiling of temperature, conductivity, pH, ORP, dissolved oxygen, and turbidity.

Features

  • Internal battery pack & memory for long-term, unattended deployments
  • All sensors are field-replaceable, and optical sensors feature self-cleaning wipers
  • Compatible with NexSens real-time data logging systems
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Perfect for harsh fouling environments, YSI's optical sensors feature an integrated wiper that prevents the impacts of biofouling, a corrosion-resistant titanium wiper shaft, and replaceable seals. 

The YSI 6920 V2-2 sonde features an internal battery pack with memory for long-term, unattended deployments. Additionally, the sonde can be powered by a 650 display unit for spot sampling applications.

The YSI 6920 V2-2 has the following available ports:

 

  • (1) Temperature/Conductivity
  • (1) pH or pH/ORP
  • (1) ISE (Nitrate, Ammonium, or Chloride)
  • (2) Optical (Dissolved Oxygen, Turbidity, Chlorophyll, Blue-Green Algae, and/or Rhodamine)
  • Medium: Fresh, sea, or polluted water
  • Operating Temperature: -5 to +50 C
  • Storage Temperature: -10 to +60 C
  • Communications: RS-232, SDI-12
  • Software: EcoWatch
  • Diameter: 2.85" (7.24cm)
  • Length: 18" (45.7cm)
  • Weight: 4 lbs. (1.8kg)
  • Internal Power: 8 AA-size alkaline batteries
  • External Power: 12 VDC
  • (1) YSI 6920 V2-2
  • (1) Temperature/conductivity sensor
  • (1) Soft-sided carrying case
  • (1) EcoWatch for Windows software CD
  • (1) Calibration cup
  • (1) Probe guard
  • (1) 6-Series operations manual
  • (1) Maintenance kit
Questions & Answers
My DO% samples read low and then high to low, is this a bad reading?
The initial power up can make the first two DO% readings read low. These readings can be disregarded.
My sonde is reading a negative value for turbidity, did I calibrate incorrectly?
A sonde (even if cleaned properly) can contaminate to almost 1.0 NTU. Typically the average contaminant level ranges from 0.2 to 0.8 NTU. With this knowledge, you can enter this offset (0.5 NTU) using the sonde's One-Point Calibration feature. This calibration is only done after a two- or three- point calibration is completed. To do a One-Point Calibration after a two- or three- point calibration: Place the sonde in a container of zero standard or filtered DI water. Use of the supplied calibration/storage cup is recommended; however, any generic glass or plastic container can be used as long as the probe guard is installed. Enter the Turbidity offset as 0.5 NTU, operate the wiper and inspect for air bubbles. Wait at least 60 seconds after the last wiper to accept the calibration point.
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Used YSI 6920 V2-2 Water Quality Sonde
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Used 6920 V2-2 Sonde with temperature/conductivity sensor
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