Get Rosemount High Purity Ph Form

The standard output signal of a glass membrane pH probe is voltage. The voltage generated during measurement is actually the sum of various potentials generated from the glass membrane, reference, liquid junction, and other components that make up the pH sensor.

Many variations of pH sensors exist, utilizing the same technology to satisfy a specific application or environment. The point is that the fundamental sensor technology remains consistent between them but the different sensors will better apply to the specific applications you seek.

The RosemountTM 3200HP pH sensor is used to accurately measure pH in high purity water applications such as boiler water, boiler feedwater, and steam condensate. These sensors feature a flowing reference design for improved signal stability in low conductivity water.

A pH sensor helps to measure the acidity or alkalinity of the water with a value between 0-14. When the pH value dips below seven, the water starts to become more acidic. Any number above seven equates to more alkaline. Each type of pH sensor works differently to measure the quality of the water.

The calibrated range of the 4-wire pH transmitter is supposed to be 2 to 12 pH, with a 4 to 20 mA signal output range.

This stage involves measuring the small voltage generated by the pH electrode. Table 1 shows the specifications of a typical pH probe. Based on the Nernst equation, the full range voltage from the probe can range from ±414 mV (±59.14 mV/pH) at 25°C to ±490 mV (±70 mV/pH) at 80°C.