Target: Liquid
Model: MW-pH101
Detection range: 1~14
Detection principle: It is an electrochemical PH water quality detecting sensor
Characteristics: Low power consumption, wide linear range, excellent repeatability and stability.
Resolution and accuracy: Sensitivity 1.1-1.6 mV/pH
Response time: ≤180 s
Notes: "The parts in contact with the sample are material of ABS, silicone rubber and glass. Linear Output"

MW-pH101 Manual download
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The MW-pH101 sensor is an electrochemical PH water quality detecting sensor. The H+ in the solution to be tested generates a voltage signal by acting on the electrode of the sensor, and the magnitude of the voltage is proportional to the concentration of H+, The corresponding pH value of the solution can be obtained by measuring the voltage signal.


It is widely used for water quality pH detection in laboratory research, water plant water supply, waste-water treatment, aquaculture, farmland irrigation and other fields.


Low power consumption, wide linear range, excellent repeatability and stability.


Items Parameter
Detection Object Solution
Measure Range 1~14
Sensitivity 1.1-1.6 mV/pH
Response Time ≤180 s
Output Linearity Linear
temperature Range 0℃~50℃
Internal Resistance <350 MΩ
Service Life 1 year

* The description and specifications might be changed without notice. Please contact us for the latest information before placing orders.

Technical Support:

Customized technical design and function, LOGO and package are available without extra charge (including molding fee) for mass volume.

The sensors don't have sleeping mode. It can be set in program if needed.

All Winsen products go through strict inspections and tests to make sure they are 100% qualified before shipping out.

The sensor has been fully tested (not calibrated) before leaving the factory. However, after transportation and storage, the environment conditions change, and the surface of the sensor absorbs moisture, mixed gas, pollution matters, etc. It is recommended that customers perform aging and calibration after sensors become stable according to the program and use occasions of the whole device.

15﹪-90﹪RH without condensation,greater or less than this range or long-term high temperature and high humidity will affect the life of the sensor.

Our sensors are certified with CE, 3C, ROHS, anti-explosion, fire prevention, and coal mining safety according to different applications. And we provide assistance for new certification.

Many factors can cause the sensor to fail such as broken wires in transportation, poisoning, falling off of the sensitive material, damage to the heating wire (device), etc. Please find specific cause in each category with Winsen’s aftersales.

Winsen provides professional consultation and service before and after sales. We will recommend the best fitting sensor for your demand. If you have any problem, don’t hesitate to email us to

Due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. But we will reply to your inquiry in 24 business hours.