Gravity Analog Dissolved Oxygen Kit - Datasheet

Operating principle

The Analog Gravity

™

class of meters offers the electrical engineer a low-cost solution to

traditionally expensive measurements. This device gives the engineer access to the

analog front end (AFE) of Atlas Scientiﬁcs Dissolved Oxygen sensing technology without

the added cost that comes with complex mathematical processing.

The Analog Gravity

™

Dissolved Oxygen meter has been specially designed to read the

voltage coming off a galvanic D.O. probe without damaging the probe; this is done

through a combination of high impedance reading and charging events. Where a voltage

is read from the probe, and then a voltage is sent to the probe. This back and forth

processes dramatically extends the life of the probe from a few months to a few years.

Dissolved oxygen is expressed in two ways:

1 Percent saturation (% Sat)

2 Milligrams per liter (mg/L)

Reading oxygen levels in mg/L requires very significant mathematical processing

and smoothing. Such complex readings can not be done with this device. The

Atlas Scientific Analog Gravity

™

Dissolved Oxygen Meter is designed to read

percent saturation only.

DO Meter V2.0

Gravity

−

Galvanic

D.O. probe

From probe

To probe