Seeed Studio Industrial pH Sensor with RS485 Modbus RTU and 0~2V Communication

Seeed Studio Industrial pH Sensor with RS485 Modbus RTU and 0~2V Communication

• Precise pH Measurement Capability
• RS485 Output for Stable Communication
• Durable, Waterproof Probe Design
• Wide pH Measurement Range
• Easy Integration with Environmental Monitoring Systems

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€125,00 €153,00
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The Seeed Studio RS485 pH Sensor (S-pH-01A) is a robust and versatile tool designed for accurate pH measurement in various applications, including agriculture, animal husbandry, forestry, horticulture, sewage treatment, swimming pools, spas, scientific experiments, and educational projects. It is particularly suitable for long-term immersion in soil or water, showcasing its durability and reliability in challenging environments.

Key features of the Seeed Studio RS485 pH Sensor include:

  1. High Accuracy and Resolution: The sensor offers a pH range of 0 to 14 with an accuracy of ±0.1 pH and a resolution of 0.01 pH, ensuring precise readings for critical applications.

  2. Robust Design: It is designed to withstand long-term immersion in different media, making it suitable for diverse environmental conditions.

  3. Maintenance-Free: The sensor features an advanced junction design that resists clogging, minimizing the need for regular maintenance.

  4. Automatic Temperature Compensation: This feature ensures accurate readings regardless of temperature fluctuations.

  5. Wide-Range Power Supply: The sensor supports a power supply range from 3.6V to 30V, accommodating various power setups.

  6. IP65 Rating: This rating indicates that the sensor is dust-tight and protected against water jets, enhancing its suitability for outdoor and harsh environmental conditions.

  7. Versatile Connectivity: The sensor supports both MODBUS RS-485 and 4~20mA current outputs, facilitating easy integration with different systems like data-loggers, controllers, and displays.

  8. Applications: The sensor's versatility makes it ideal for a wide range of uses, including in fields like agriculture, animal husbandry, and environmental monitoring.

It's important to note that while the sensor is designed with industry standards and has a user-friendly installation process, it does require calibration for accurate measurements. The calibration process involves using buffer solutions, which are not provided with the sensor but can be easily obtained. Users should also be aware that the sensor, being laboratory-grade, is not designed for permanent submersion in measuring solutions. For continuous use, it's recommended to opt for an industrial-grade pH electrode.

For detailed information on calibration, specifications, and applications, you can refer to the product's user manual and datasheet.

In summary, the Seeed Studio RS485 pH Sensor S-pH-01A is a reliable and efficient choice for accurate pH monitoring in various professional applications​.

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General Parameters
Product Model S-pH-01A
Output Interface Analog Voltage 0-2V (Output resistance ~0ohm) RS-485 MODBUS-RTU
Power Supply 3.9-30V/DC 3.9-30V/DC
Power Consumption 35mA@24V DC 35mA@24V DC
Start-up time < 2 seconds
pH Measurement High impedance and isolated input;
Range: 0 - 14PH,
Resolution: 0.01PH,
Accuracy: +/- 0.1PH;
Can be used for a solution or semi-solid substrate
Temperature Measurement Range: - 40~80°C,
Resolution: 0.1°C,
Accuracy: +/-0.5°C
IP Rating Electrode: IP68;
Transmitter: IP65
Operating Temperature -40℃ ~ 85℃
Installation Electrode: 3/4"NPT screw threads;
Transmitter: Mounting hole
Cable Length Power and Signal Cable:2 meters (Customizable)
Electrode Cable: 5 meters
Dimension Electrode: Width*Diameter 160*30mm; 3/4"NPT screw threads
Transmitter: 140mm*65mm*50mm
Range 0 ~ 14pH
Accuracy ± 0.1 pH
Resolution 0.01 pH

Shipping Policy

We provide worldwide shipping using reliable tracked
shipping services.

Local Shipments within Cyprus

Shipments in Cyprus are performed usually with ACS Courrier
or AKIS Express. In some cases, we might deliver the products ourselves. A pick-up
option from our locations is also available.

International Shipments

International shipments are performed using Express Airway
Shipping Services. We are currently shipping orders with TNT Express and FedEX.
As soon as your shipment is dispatched you will receive the shipment confirmation
including the shipment tracking number which you can use to track your order
from the shipment provider website.

We dispatch orders within 1-3 workdays after the day of the
order placement. 

General Return Policy

We have a 30-day return policy, which means you have 30 days
after receiving your item to request a return.

To be eligible for a return, your item must be in the same
condition that you received it, unworn or unused, with tags, and in its
original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at If
your return is accepted, we’ll send you a return shipping label, as well as
instructions on how and where to send your package. Items sent back to us
without first requesting a return will not be accepted.

For any further information, help and support regarding the
shipping and/or return process you can contact us at:

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  • Telephone: +357 22 282828