Campbell Scientific Ltd., Campbell Park, 80 Hathern Road, Shepshed, Loughborough. LE129GX,UK

Tel: +44 (0) 1509 601141 Fax: +44 (0) 1509 601091 Email: sales@campbellsci.co.uk

www.campbellsci.co.uk

Dissolved Oxygen Sensor

Model CS512

The CS512 is a rugged, low-

maintenance sensor that is

manufactured by OxyGuard. This

sensor consists of a self-polarizing

galvanic cell that generates a

millivolt signal proportional to the

amount of oxygen present in the

measured medium (typically

water). Oxygen diffuses through

its membrane onto a cathode that

produces a chemical reaction. An

electrical current is produced by

this reaction that is converted from

microamps to millivolts by an in-

line resistor.

Benefits/Features

The CS512 provides the following

advantages over the older

dissolved oxygen sensors:

• No gas buildup in the probe

preventing blown membranes

• Completely sealed case (i.e., no

vent hole)

• Plastic-to-plastic seal (i.e., no

o-ring)

• Improved long term stability

Specifications

Range: 0 to 50 mg l-1

dissolved oxygen, 0 to 100%

volume gaseous oxygen

Output: 2.5 to 5 mV per mg l-1

Output impedance: ~1 kohm

Repeatability: better than

0.2 mg l-1

Response Time: After

equilibrium, 1 minute for 95% of

final value

Minimum water velocity:

1 cm s-1 across membrane

Minimum submersion depth:

6.35 cm

Operating temperature

range: 0° to 40°C

Pressure: 0 to 2 bar

Temperature Compensation:

Self compensating

Dimensions: diameter:

5.8 cm, height: 5.9 cm

Weight: 0.45 g

Datalogger compatibility:

CR200 series, CR510, CR10X,

CR1000, CR23X, CR5000,

CR7, CR9000(X); call for

compatibility with older

dataloggers

Ordering Information

CS512 - Dissolved oxygen

sensor. Fitted with 10 m cable as

standard. Supplied with 5 spare

membranes and 50 ml

electrolyte.

Options and Spares

010315 - DO Electrolyte, 1 litre

010314 - Teflon Membrane kit,

10 pack

Agitators and auto-cleaners are

available to special order.

August 2005

CSL 565