Oxygen gauges in water are used when you want to find out the amount of dissolved oxygen (DO) in a pure liquid. Dissolved oxygen or often referred to as oxygen demand is an important parameter in water quality analysis.
The greater the value of dissolved oxygen in water, it indicates that the water has good quality. Conversely, if the dissolved oxygen value is low, it can be said that the water quality is poor or has been polluted. Let's look at reviews of oxygen measuring devices by electrochemical methods or DO-meters.
What is Dissolved Oxygen?
Dissolved oxygen is non-compound oxygen (O2) free in water or other liquids. The amount can be determined by using a dissolved oxygen gauge in the pipeline. Typically, dissolved oxygen measurements are carried out in industries that offer pure water products with a lot of oxygen content or industries that need good quality water to make their products.
The Importance of Measuring Dissolved Oxygen Levels in Water
For some industries, knowing dissolved oxygen levels is the same as maintaining the quality of products sold to the public. Dissolved oxygen levels are important in various processes in the field of biotechnology, drug development, chemical production, food and beverage manufacturing, and water and raw water treatment applications. Dissolved oxygen measuring instruments are important to optimize yield and product quality, ensure process safety, and reduce costs.
Getting to Know Oxygen Measuring Devices in Water
Measuring oxygen in water is a DO measurement system that is contained in a channel. This device usually consists of three main components, namely dissolved oxygen sensor, adoption/casing system, and dissolved oxygen transmitter (multiparameter transmitter). Dissolved oxygen sensors in measuring devices are usually sensors designed for the measurement of industrial dissolved oxygen. In contrast to those commonly used for measurements in the laboratory, the sensor used in the DO solution is an optical or polarographic dissolved oxygen sensor.
How Oxygen Measuring Equipment Works in Water
Measuring dissolved oxygen levels in waterworks based on industrial dissolved oxygen sensor technology. For example, Mettler Toledo offers two different sensor technologies for measuring dissolved oxygen, namely optics and amperometric.
- Optics: An optical sensor is a dissolved oxygen probe for measuring fluorescent oxygen-sensitive layers using optical technology. The layer will absorb light from the light-emitting diode in the sensor. Furthermore, the light will be released as a luminous. The amount of luminescence depends on the oxygen content in the sample.
- Amperometric: Amperometric sensors are sensors in the dissolved oxygen meter. The process involves a membrane that can be penetrated by gases to separate the sample from the electrochemical cells in it. Oxygen spread through the membrane will be directly proportional to the partial pressure of oxygen in the liquid outside the sensor.
- Furthermore, the cathode and anode in the probe are polarized with voltage so that the electrochemical reaction of oxygen is active. Oxygen will then be reduced to the cathode when the anode is oxidized at the same time. The result is a weak current which is directly proportional to the volume of oxygen that reacts.
Mettler Toledo as an oxygen gauge in water makes measurements in a continuous and real-time manner. This tool will express the concentration of dissolved oxygen in relative numbers with units of percent for volume, saturation, dissolved oxygen, and ppm. It can also be in absolute numbers in units of mg / L or mmol / L. The dissolved oxygen meter Mettler Toledo also has Intelligent Sensor Management that provides strong digital signals, predictive diagnostics on sensors, and market measurement technology. Get this Mettler Toledo only at Hyprowira!
