The PH value of the solution is an important characteristic of the solution. Industrial-grade PH transmitters are expensive: PH test pens on the market are mature products and cannot be used for secondary design and development; PH composite electrodes output mV-level voltage signals, and the single-chip microcomputer cannot directly identify and process. Based on these current conditions, we designed this PH sensor module. The module is low in price, easy to use, high in measurement accuracy, and can directly output 0"5V or 0~3V analog voltage signals.
Product parameters:
Supply voltage: 5V
Module size: 37mm X 28mm
Measuring range: 0-14PH
Measuring temperature: 0-60°C
Accuracy: ±0.01pH (25"C)
Response time: ≤ 1min
Analog signal output voltage: 0-5V
PH sensor interface: BNC interface
Temperature sensor interface: XH2.54
Pin description:
The module is connected to the PH compound electrode through the ENC connector, and the DS1820 temperature sensor interface is extended to facilitate the software temperature compensation design. Adjust the knob of the 10K blue potentiometer to adjust the magnification (clockwise adjustment increases, counterclockwise adjustment) Adjustment reduced)
VCC: Supply voltage + 5V (3.3V not available)
GND: supply voltage-
GND: analog signal output-
PO: Analog voltage output+
2V5: Reference voltage 2.5V output port (for testing, no external power supply)
T1: Temperature sensor DS18B20 signal output port
On Nov 21, 2023 at 03:57:33 PST, seller added the following information: