The Galvanic Oxygen Cell DN Type is completely interchangeable with the Galvanic Oxygen Cell Type N.

They are diffusion limited metal/air batteries. The oxygen in the sample diffuses through the barrier and reaches

the cathode. Here it is reduced to hydroxyl ions which, in turn, pass through the electrolyte to oxidize the metal

anode.

A Current, proportional to the rate of consumption of oxygen, is generated when the cathode/anode circuit is

completed, the Galvanic Oxygen Cell operating in what is virtually a short-circuit condition. The cell current of

is a direct function of the rate at which oxygen reaches the cathode.

Technical Specifications of the Galvanic Oxygen Cell DN Type

Range：

1ppm to 50% or 100ppm to 50% O2 (in N2)

Typical Cell Life：

100,000 oxygen % hours or 2 years, whichever is the sooner.

Stability

Better than 2% of reading per month, or 1ppm whichever is greater.

Sample Flow

Between 100 and 300 ml/min for optimum operation.

Sample Pressure

The pressure applied to the cell is determined by the vent pressure which should be atmospheric for quoted accuracy. Note: The sensor must not be subjected to rapid pressure changes.

Sample Temperature

-5 to +40°C (non-condensing)

Speed of Response

T90 is variable depending on sensor and concentration and is approximately 3s at % levels and 20s at ppm levels. The ppm figure assumes that the sensor is purged down.

Environmental Conditions

Temperature

0 to 40 °C - continuous

-5 to + 50 °C – intermittent

Altitude

up to 2000m

Humidity

Max relative humidity 80% non-condensing

Pollution degree

Pollution degree 2

Both cells are usually used for:

G1010MarkII oxygen analyser

Wall-mounted G610 oxygen analyser

Portable G810 oxygen analyser

G1010 oxygen analyser

G1010R oxygen analyser

G250 oxygen analyser

G6050 oxygen analyser

KG6050 and KG850 hydrogen and oxygen analyser