pH Sensor Probe E201-C BNC

The pH Electrode E201-C BNC is a high-accuracy analog pH sensor probe designed for reliable measurement of acidity and alkalinity in water-based solutions. It delivers fast response and stable readings, making it ideal for applications such as water purification, aquariums, hydroponics, laboratories, chemical analysis, and research projects.

This probe features a refillable KCl (potassium chloride) solution, which helps extend sensor life and maintain long-term accuracy. The standard BNC connector ensures easy compatibility with most pH meter modules, Arduino, Raspberry Pi, and other microcontroller-based systems.

For best results, the electrode bulb must be fully immersed in the liquid being tested. Proper storage in salt or buffer solution helps retain calibration and measurement reliability.

Key Features

• Accurate pH measurement range from 0 to 14

• Fast response time (≤ 5 seconds)

• Refillable KCl solution for extended lifespan

• Standard BNC connector for wide compatibility

• Analog output for easy interfacing

• Replaceable probe design

• Suitable for Arduino, Raspberry Pi, and pH controllers

Technical Specifications

• Operating Voltage: 5V ±0.2V

• Operating Current: 5–10 mA

• pH Measurement Range: 0 – 14

• Resolution: ±0.15 pH (STP)

• Measurable Liquid Temperature: 0 – 80 °C

• Response Time: ≤ 5 seconds

• Falling Time: ≤ 60 seconds

• Power Rating: ≤ 0.5 W

• Operating Temperature: -10 to +50 °C

• Humidity: ≤ 95% RH

• Output Type: Analog

• Module Dimensions: 42 × 32 × 20 mm

• Mounting: 4 × M3 mounting holes

Applications

• Water quality monitoring

• Aquariums & fish tanks

• Hydroponics & aquaponics

• Chemical & pharmaceutical industries

• Dye industry

• Scientific research & education

Storage & Maintenance Instructions

• Rinse the electrode with deionized water after use

• Always keep the electrode bulb wet using KCl or pH 7 buffer solution

• Refill KCl solution when it drops below 2 cm inside the probe

• Store the probe in salt or buffer solution when not in use

• Calibrate with standard buffer solutions before measurement

Package Includes

• 1 × E201-C BNC pH Electrode Probe

• 1 × Preamplifier Module

• 4 × M3 Philips Screws & Nuts