Cond 3210 SET w/ LR 325/01

OXI 3205 HANDHELD DISSOLVEDOXYGEN METERS
Handheld DO meter for field measurements.

HandheldDissolved Oxygen Meters Product Description

Useable anywhere, the WTW Oxi 3205 and Oxi 3210handheld dissolved oxygen meters are robust, easy to operate and provide assuredaccurate readings. Both handheld dissolved oxygen meters meet IP66/67standards ? no worrying about using it in the rain and mud, or accidentallydropping it in the water. These handheld dissolved oxygen meters haveincorporated a sealed silicone keypad which offers real button response, yetallows for easy cleaning. In combination with galvanic oxygen meter probesDurOx? 325 or CellOx?325 (no polarization time required) the handheld dissolved oxygen meters areready for immediate use anywhere, especially in fish farming applications.

Oxi 3205 handheld dissolved oxygen meters
This easy to use handheld dissolved oxygen meter will meet all your day-to-daydemands. This simple, robust dissolved oxygen handheld meter has asimplified keypad, with no memory function and no manual input facilities. When used in combination with the DurOx? 325 dissolved oxygen meter probe andits protective hood the handheld DO meter is particularly suitable formeasurements in fish-farming applications.

Oxi 3210 handheld dissolved oxygen meters
The compact precision handheld dissolved oxygen meter Oxi 3210 enables you tocarry out oxygen (DO) measurements rapidly and reliably. The Oxi3210handheld dissolved oxygen meters provide the maximum degree of operatingcomfort, reliability, and measuring certainty for all applications. Loadedwith additional features, the Oxi 3210 handheld DO meters include automatictemperature and air pressure compensation, salinity correction, GLP-supportingfunctions and built in datalogger. The handheld dissolved oxygen metersalso have auto ranging and auto read function, which checks the stability of theinput signal, for ease of use and data reproducibility. The handhelddissolved oxygen meters have a continuous measurement control (CMC) functionthat alerts you when your meter is reading outside of the calibrated range. The handheld dissolved oxygen meter’s large memory allows you to manually store200 datasets.

What is Dissolved Oxygen?
Some oxygen is dissolved in practically every liquid. For example, at atemperature of 68 øF (20 øC) and an atmospheric pressure of 1013 mbarsaturated water contains about 9 mg/l oxygen. Ethanol can contain up to 40mg/l whereas glycerol only has about 2 mg/l.

Each liquid takes up oxygen until the partialpressure of oxygen in the liquid is in equilibrium with the air or gas phase incontact with it. The actual oxygen concentration depends on a number offactors, such as temperature, air pressure, oxygen consumption by microorganismsin a biodegradation process or oxygen production by algae, etc.

The oxygen concentration is important forthe:

• Living conditions for fish and microorganisms in waters
• Degradation processes in wastewater treatment
• Corrosion processes in pipelines
• Shelf life of beverages, etc.

The determination of the dissolved oxygenconcentration was formerly carried out by the WINKLER titration method. Today electrochemical measurement is a recognized method in numerous standardprocedures.

In its simplest form a dissolved oxygensensor contains a working electrode and a counterelectrode. Bothelectrodes are located in an electrolyte system which is separated from thesample by a gas-permeable membrane. The working electrode reduces theoxygen molecules to hydroxide ions. In this electrochemical reaction acurrent flows from the counterelectrode to the working electrode. The moredissolved oxygen present in the sample, the larger the current signal. Thehandheld dissolved oxygen meter calculates the oxygen concentration in thesample from this signal.

HandheldDissolved Oxygen Meters Specifications

Handheld Dissolved Oxygen Meter Range(both meters):
O₂ Concentration*: 0.00 to 19.99mg/l, 0 to 90 mg/l
O₂ Saturation*: 0.0 to 199.9% or0 to 600%
Partial Pressure*: 0 to 199.9 hPa or 0 to1250 hPa
Temp: 32 to 221 øF (0 to +105.0 øC)
Handheld Dissolved Oxygen Meter Accuracy (both meters):
O₂ Concentration*: ñ 0.5 % ofmeasured value at ambient temperature of 41 to 86 øF (5 to 30 øC)
O₂ Saturation*: ñ 0.5 % ofmeasured value when measuring in the range of ñ 10 K around the calibrationtemperature
Partial Pressure*: ñ 0.5 % of of measuredvalue at ambient temperature of 41 to 86 øF (5 to 30 øC)
Temperature: +0.2 øF (+0.1øC)
Handheld Dissolved Oxygen Meter Resolution (both meters): All values +1digit
Salinity Correction: 0 to 70 SAL
Air Pressure Correction: Automatic through installation of pressuresensor in the range 500 to 1100 mbar
Operational Temperature: 14 to 131 øF (-10 to 55 øC)
Storage Temperature: -13 to 149 øF (-25 to 65 øC)
Power: Four 1.5 V AA batteries or four 1.2 V NiMH
Battery life: Up to 1000 hours w/o backlight, 150 hours w/ backlight
Dimensions (LxWxH): 6.78×3.15×1.46in (172x80x37mm)
Weight: 0.66lb (0.3kg)
IP Rating: IP 66/67
Certifications: CE
* Depending on sensor

CellOx?325-3 Probe
Electrode material: Gold (Working), Lead (Counter)
Shaft material: POM
Cable length: 9.8 ft (3 m)
Measuring range: 0 to 50 mg/l O₂, 0 to 600% O₂
Temperature range: 32 to 122 øF (0 to 50 øC)
Min/max immersion depth: 2.4in to 65ft (6cm to 20m) depending on cablelength
Shaft length: 7.38 in (187.5 mm)
Diameter: 0.70 in (17.5 mm)
Weight: 6 oz (170 g)

DurOx?325-3 Probe
Membrane Head material: POM
Shaft material: POM
Cable length: 9.8 ft (3 m)
Measuring range: 0 to 50 mg/l O₂
Temperature range: 32 to 104 øF (0 to 40 øC)
Min/max immersion depth: 1.6in to 9.8ft (4cm to 3m)
Shaft length: 4.33 in (110 mm) with protective hood
Diameter: 0.70 in (17.5 mm)
Weight: 7.8 oz (220 g) with cable