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Digital pH Sensor

● Intelligent pH Sensor with RS485 output, directly converting analog signals into digital signals ● Data is stored within the sensor, including critical parameters such as zero point and slope ● After laboratory calibration, it can be connected on-site and used immediately; the system automatically recognizes it, eliminating the need for on-site sensor calibration and making it convenient to use ● No transmitter is required; the electrode’s digital output can be directly connected to a computer ● The electrode’s digital output can be directly converted into WIFI or GPRS signals for wireless transmission ● Data can be transmitted over short or long distances, with stable and reliable measurement values ● Measurement range: 0–14 pH; Zero potential: E0 = 7 pH; Temperature range: 0–110°C ● Pressure resistance: 0.6 MPa ● Electrode external dimensions: Φ12×120, 225, or other sizes ● Electrode outer tube material: glass or PPS plastic
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Digital pH Sensor

Industry Applications

Our company manufactures over 90 models of sensors across five major categories, which are widely used in more than 100 different applications, such as power, petrochemical, water and wastewater treatment, metallurgy, biotechnology, food, beverage, and so on...

About Us

A professional manufacturer of Analytical Sensor, Nengshi — A Trusted Sensor Partner!

With more than 30 years of experience in sensor development and manufacturing, Nengshi produces reliable analytical sensors and instruments for industrial, laboratory and water-treatment applications. Our annual sensor output exceeds 250,000 units, and our products are supplied to customers in more than 50 countries and regions. We also provide OEM and customized sensor solutions.

 

As a professional manufacturer of Analytical Sensor 
We are committed to ensuring the superior quality of our Sensors
Each Sensor is subject to multiple rigorous inspections before leaving the factory
To ensure user satisfaction

● High Sensitivity

● Stable Performance

● Long Service Life

Nengshi — A Trusted Sensor Partner!

 

Whether you are using an imported or domestic pH meter, sodium meter, conductivity meter, dissolved oxygen meter, or ORP meter, we have high-performance Sensors that can be directly matched with your instrument!

30 + Years of Experience
250000 + Sensors Produced Annually
50 + Countries and Regions Served
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OEM and Customization

/ OEM products are available, or products can be manufactured according to customer requirements.

As a professional manufacturer of Analytical Sensor, we are committed to ensuring the superior quality of our Sensors.
Each Sensor is rigorously inspected multiple times before leaving the factory to ensure user satisfaction.

Sensitive

Stability

Long lifespan

Nengshi Sensor—Your Right Choice!

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If you have any OEM or custom-order requirements, please leave a message and we will contact you promptly!

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/ Professional Manufacturer of Analytical Sensor

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2024-12-19

What is pH, and what should you know about pH measurement?

When an acid is added to water, the acidity of the water increases and the pH value decreases. When a base is added to water, the alkalinity of the water increases, and the pH is the unit used to express the degree of acidity or alkalinity. When we say that milk is “cool” or that an acid is “weak,” we are not providing a definitive description of the condition of the substance, because we have not specified the measurement unit or the measured value. By contrast, stating that the temperature of the milk is 10°C conveys a precise concept. Similarly, saying that a weak acid has a pH of 5.2 also constitutes a precise statement.

What is pH, and what should you know about pH measurement?

2022-07-28

Basic Principles of Electrodes

The electrodes used in potentiometric analysis are referred to as galvanic cells. A galvanic cell is a system that converts chemical reaction energy into electrical energy. The voltage of such a cell is known as the electromotive force (EMF). This EMF is composed of two half-cells: one is the measuring electrode, whose potential is related to the activity of a specific ion; the other is the reference half-cell, commonly called the reference electrode, which is typically in contact with the solution being measured and connected to the measuring instrument.

Basic Principles of Electrodes

2021-11-12

Components of a Complete Conductivity Measurement System

A complete conductivity measurement system comprises an inductive or conductive measuring electrode, a cable, and a measuring instrument. Unlike pH electrodes, conductive electrodes are made from materials with stable mechanical properties, so they do not require special protective components. When selecting a conductive electrode, the following considerations should be taken into account:

Components of a Complete Conductivity Measurement System

2021-11-12

How is the polarization resistance Rp formed?

Ions serve as charge carriers, transporting charge to the electrode surface. When the electrode surface is too small or the ion concentration is too high, this charge-transfer process cannot proceed rapidly, leading to the formation of an ion cloud at the electrode surface that obscures the electrode. In the case of direct current, the initial current gradually decreases to zero. However, since conductivity measurements are performed using alternating current, only a finite additional resistance is introduced—though this resistance is, of course, undesirable.

How is the polarization resistance Rp formed?