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YSI 6920 V2-2 Multiparameter Water Quality Sonde

Updated:2025-03-13

Brand: YSI
Model: 6920 V2-2
Description: The YSI 6920 V2-2 sonde is an economical water quality logging system, ideal for long-term in situ monitoring and profiling. Real-time turbidity monitoring, dissolved oxygen monitoring, algae monitori
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Product Details

YSI 6920 V2-2 Multiparameter Water Quality Sonde Description：

User's Manual

The V2 sondes represent a proven generation of multi-parameter sondes from YSI. 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.

Features:

Internal battery pack & memory for long-term, unattended deployments

All sensors are field-replaceable, and optical sensors feature self-cleaning wipers

Compatible with real-time data logging systems

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

(1) Temperature/Conductivity

(1) pH or pH/ORP

(1) ISE (Nitrate, Ammonium, and Chloride)

(2) Optical (Dissolved Oxygen, Turbidity, Chlorophyll, Blue-Green Algae, and/or Rhodamine)

YSI 6920 V2-2 Multiparameter Water Quality Sonde Specifications：

The 6920 V2-2 has:

2 optical ports

Conductivity/temperature port

pH or pH/ORP port

ISE port

General Sonde Specifications
Medium	Fresh, sea or polluted water
Temperature - Operating	-5 to +50°C
Temperature - Storage	-10 to +60°C
Communications	RS-232, SDI-12
Software	EcoWatch®
Diameter	2.85 in, 7.24 cm
Length	18 in, 45.7 cm
Weight	4 lbs, 1.8 kg
Power - External	12 V DC
Power - Internal	8 AA-size alkaline batteries
Certifications	CE, EU Battery Compliance, FCC, IP-67, WEEE, and MCERTS; Assembled in the USA

Sensor Specifications	Range	Resolution	Accuracy
ROX? Optical Dissolved Oxygen? % Saturation	0 to 500%	0.1%	0 to 200%: ±1% of reading or 1% air saturation, whichever is greater; 200 to 500%: ±15% of reading
ROX? Optical Dissolved Oxygen? mg/L	0 to 50 mg/L	0.01 mg/L	0 to 20 mg/L: ± 0.1 mg/L or 1% of reading, whichever is greater; 20 to 50 mg/L: ±15% of reading
Conductivity?? 6560 Sensor?	0 to 100 mS/cm	0.001 to 0.1 mS/cm (range dependent)	±0.5% of reading + 0.001 mS/cm
Salinity	0 to 70 ppt	0.01 ppt	±1% of reading or 0.1 ppt, whichever is greater
Temperature 6560 Sensor?	-5 to +50°C	0.01°C	±0.15°C
pH 6561 Sensor?	0 to 14 units	0.01 unit	±0.2 unit
ORP	-999 to +999 mV	0.1 mV	±20 mV
Depth - Deep	0 to 656 ft, 200 m	0.001 ft, 0.001 m	±1 ft, ±0.3 m
Depth - Medium	0 to 200 ft, 61 m	0.001 ft, 0.001 m	±0.4 ft, ±0.12 m
Depth - Shallow	0 to 30 ft, 9.1 m	0.001 ft, 0.001 m	±0.06 ft, ±0.02 m
Vented Level	0 to 30 ft, 9.1 m	0.001 ft, 0.001 m	±0.01 ft, 0.003 m
Turbidity? 6136 Sensor?	0 to 1,000 NTU	0.1 NTU	±2% of reading or 0.3 NTU, whichever is greater**
Nitrate / nitrogen???	0 to 200 mg/L-N	0.001 to 1 mg/L-N (range dependent)	±10% of reading or 2 mg/L, whichever is greater
Ammonium / ammonia / nitrogen???	0 to 200 mg/L-N	0.001 to 1 mg/L-N (range dependent)	±10% of reading or 2 mg/L, whichever is greater
Chloride???	0 to 1000 mg/L	0.001 to 1 mg/L (range dependent)	±15% of reading or 5 mg/L, whichever is greater
Rhodamine?	0-200 μg/L	0.1 μg/L	±5% reading or 1 μg/L, whichever is greater

Blue-Green Algae Sensor Specifications	Range	Detection Limit	Resolution	Linearity
Blue-Green Algae Phycocyanin?	~0 to 280,000 cells/mL? 0 to 100 RFU	~220 cells/mL§	1 cell/mL 0.1 RFU	R2 > 0.9999**
Blue-Green Algae Phycoerythrin?	~0 to 200,000 cells/mL? 0 to 100 RFU	~450 cells/mL§§	1 cell/mL 0.1 RFU	R2 > 0.9999***
Chlorophyll? 6025 Sensor?	~0 to 400 μg/L 0 to 100 RFU	~0.1 μg/L§§§	0.1 μg/L Chl 0.1% RFU	R2 > 0.9999****