// Medical Scientific Connectors

pH Electrode BNC Connector

pH electrodes connect to pH meters and transmitters via BNC connectors. The high-impedance glass electrode produces a millivolt output varying with pH that must be measured with a very high input impedance amplifier.

// Specifications

Standard

BNC 75 ohm high impedance

Connector

BNC coaxial

Impedance

Greater than 10^12 ohm input required

Output

59.16 mV per pH unit at 25C

Use Case

pH meters lab analyzers inline pH transmitters

Note

Cable must be short to avoid noise pickup

// Pin Reference Table

Pin	Name	Function	Type
1	Center	pH glass electrode high impedance signal	ADC
2	Outer Shell	Reference electrode ground	GND