NGW-1pc Industrial pH Sensor MODBUS-RTU RS485 & 0~2V Analog Voltage (S-pH-01A) V2.0

Description
This pH Sensor with hook-up wires measures the hydrogen-ion activity in water-based solutions, indicating its acidity or basicity expressed as pH. pH level is an important indicator in many scenarios, especially in monitoring soil conditions and water quality.

This pH Sensor is designed with industry standards. It adopts international advanced solid dielectric and large-area polytetrafluoroethylene liquid junction, which is not easy to block and convenient for maintenance. Its electrode is IP68, the transmitter is IP65 rated, waterproof in a tight seal, and capable of withstanding long-term constant use in professional scenarios. This pH Sensor comes with a MODBUS-RTU RS485 serial communications protocol and 0~2V Analog Voltage output. It can be easily connected and integrated with other devices such as data loggers, Converter, displays, etc. This cost-effective pH sensor features low-power consumption, compact size, portability, and high integration.



Seeed also provides the SenseCAP Portal and SenseCAP Mate to help users better manage and check data remotely.




Note

If you find white solid granular crystals around the probe shroud, this is a normal situation and please do not worry. It is caused by temperature change, environmental change, or redox during the process of delivery. However, it will not affect the nature of the internal solution and the normal operation of the sensor.
If you find it, please use a wet paper towel to gently wipe off the crystals on it, please do not let it near your children to avoid accidental ingestion.
Specification
pH
Range 0 ~ 14pH
Accuracy ± 0.1 pH
Resolution 0.01 pH
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
Application
Agriculture
Animal Husbandry
Forestry and Horticulture
Sewage Treatment
Swimming Pools and Spas
Scientific Experiments
Educational Projects
Other environmental monitoring scenarios
Wiring Diagram



Note

Version 1 of this pH Meter/Sensor supports RS485 protocol and 4~20mA current, which is now retired, and replaced by this current one: Version 2, supporting RS485 protocol and 0~2V analog voltage.

Probe Dimension


Part List
Industrial pH Sensor with hook-up wires *1