You Professional Dissolved Oxygen Meter Suppliers!
Dongyi Company will be a professional manufacturer of liquid level meters, flow meters, online water quality analyzers and pressure transmitters integrating R&D, design, production, sales and after-sales.
Why Choose Us
Our Factory
The company has a factory building of nearly 2,000 square meters and is professional There are more than 10 technical staff and more than 20 utility model patents.
Production Equipment
Our production facilities are equipped with advanced tools, including ultrasonic and radar testing devices, laser welding equipment, flow calibration devices, pressure debugging equipment, high and low temperature aging boxes, and circuit aging devices.
Our Certificates
We hold several certifications, including utility model patents, design patents, software works, and quality management system certifications.
Dissolved Oxygen Meter - Overview
A dissolved oxygen meter measures the amount of oxygen in the water when it is in its dissolved form. The main uses of a dissolved oxygen meter are for industrial purposes and for animal care. A dissolved oxygen meter basically measures the concentration of oxygen in water. Dissolved oxygen measurement is an essential test to verify the integrity of oxygen supply systems for biological activity in reactors and sewage facilities where bacteria and biomass are grown for water treatment.
Product Specification
We offer the following Specifications:
|
Dissolved oxygen |
(0.0~20.0) mg/L |
Response time |
No more than 30 seconds (90% response at 20 ° C) |
|
Temperature |
(0-40) ° C |
Automatic temperature compensation range |
(0-40) ° C |
|
Dissolved oxygen |
± 0.3mg/L |
Power supply |
Four alkaline batteries, No. 7 |
|
Temperature |
± 1 ° C |
External dimensions (mm) |
180 x 80 x 30 |
|
Residual current |
Not more than 0.15mg/L |
Weight |
1kg |
Types of Dissolved Oxygen Meter

Portable Dissolved Oxygen Meter
Portable: Small and lightweight, suitable for on-site measurements.
Multifunctional: Often includes temperature compensation to improve measurement accuracy.
Battery-operated: No power outlet required, flexible use.
Benchtop Dissolved Oxygen Meter
High Accuracy: Typically more accurate than portable Dissolved Oxygen meters, suitable for laboratory use.
Multifunctional: With many features such as data logging, temperature compensation, and multi-parameter measurement.
Stability: Robust construction, suitable for continuous use.

Application of Dissolved Oxygen Meter
Aquaculture
Used to monitor oxygen levels in fish tanks and ponds to ensure optimal conditions for aquatic life. Maintaining proper oxygen levels is crucial for fish health and growth.
01
Wastewater Treatment
In wastewater treatment plants, DO meters help assess the efficiency of aeration processes. They ensure that enough oxygen is present to support aerobic bacteria that break down organic matter in sewage.
02
Environmental Monitoring
Used in environmental studies to assess the health of lakes, rivers, and other water bodies. Low oxygen levels can indicate pollution or excessive organic matter, while high levels can indicate algal blooms.
03
Biotechnology and Pharmaceutical
Used for fermentation or cell culture, DO meters monitor oxygen levels to optimize growth conditions for microorganisms or cells. This is critical for the production of various biotechnological and pharmaceutical products.
04
Food and Beverage Industry
DO meters are employed in breweries, wineries, and food processing plants to monitor oxygen levels during fermentation and storage processes. Controlling oxygen levels helps maintain product quality and shelf life.
05
Components of Dissolved Oxygen Meter
The first and most crucial component of a dissolved oxygen meter is the sensor. The sensor is responsible for measuring the dissolved oxygen in the water and converting it into an electrical signal that the meter can display.
The membrane is a thin layer of material that allows oxygen to pass through to the sensor while keeping out any other substances that could interfere with the measurement. Different types of membranes are available.
The electrolyte is a substance that fills the electrode and completes the circuit between the sensor and the meter. It is typically a potassium chloride solution that acts as a conductive medium, meaning it provides the electrons necessary for the current flow.
The meter is the device that displays the dissolved oxygen measurement. Some meters use a digital display, while others use a needle and scale. The meter can also store past measurements, display temperature, and adjust the calibration of the sensor.
Calibration is essential to ensure the dissolved oxygen meter provides accurate results. A calibration solution is typically provided with the meter and is used to set the sensor's response time and sensitivity. The standard is a reference solution that is used to confirm the meter's accuracy.

Design Confirmation and Quotation:Our process begins when a customer sends us specific product details such as the specifications and dimensions of the product they want. We will provide a quote for the entire process according to customer requirements.
Sample Making: After agreeing the quotation, Our designers will make samples for you in the shortest time, after the samples are finished, we can send them to our customers by post for testing, or provide you some pictures for your reference.
Mass Production & QC: Once the samples are finalized, the design will be forwarded to our factory to start mass production. Our dedicated quality control team monitors every step of the process to ensure that every product meets our standards before it leaves the factory.
Delivery: Once the order has been manufactured, we will arrange for delivery of the product to the customer, thus completing the process.
Packaging & Delivery

Certificate

FAQ
We're well-known as one of the leading dissolved oxygen meter manufacturers and suppliers in China. Please feel free to buy high quality dissolved oxygen meter made in China here from our factory. Contact us for customized service.
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