The AG80 universal sensor provides a stable and economical platform for online measurement of pH, ORP, specific ions, dissolved oxygen, conductivity, or resistivity. The AG80 type is a plug-in or immersion sensor used at the end of a pipeline tee or riser, which can be immersed in a water tank or pond. The AG80 model can also be used as a valve with a retractable design, allowing sensors to be inserted or removed into pipelines without interrupting the process flow. Both sensor designs use easily replaceable electrode cartridges. 3S provides a variety of ion selective electrode boxes suitable for continuous online measurement.

A silver ion electrode is a combination electrode consisting of a solid-state pressed silver sulfide (AgS) crystal sensing element and a double junction reference electrode. The silver ion selective electrode box generates a millivolt potential proportional to the concentration of free silver ions in the measurement solution. The response speed ranges from a few seconds in concentrated solution to a few minutes in the lower ppm range.

The silver ion sensor is used in conjunction with the Model T80 controller and has dual channel mixing and matching functions. The analyzer will measure silver from 0.01 ppm to 108000 ppm and automatically adjust the display within the range of ppb, ppm, and ppt (one thousandth).

All solid-state ion electrodes based on silver sulfide are poisoned by mercury ions in the solution. The measurement solution must be free of mercury. If mercury alloy is formed on the electrode, polishing the sensor with the provided polishing strip will restore its function. In an ammonia free alkaline solution, silver reacts with hydroxide ions to form Ag2O, a precipitate of silver oxide. This can be avoided by maintaining a slightly acidic solution, and for low ppm measurements, the pH of the silver solution should be below 8.

Calibrate the sensor using two standard solutions with a concentration difference of 10 times, namely 10ppm and 100ppm.

In many cases, the ion concentration, temperature, and pH value of the process solution will differ significantly from the calibration solution. These factors can affect the zero potential of the sensor, leading to offset, but they usually do not affect the slope. To eliminate offset, perform standardization and single point online calibration. Once the sensor is stable in the process solution, a grab sample is taken from the process and the silver ion concentration is determined. Adjust the analyzer to read the values determined by this laboratory. Suggest verifying readings weekly.

feature

• AG80 Universal Sensor

• Multiple structural materials

• Integrated signal conditioner

• Replaceable electrode box

• Dual channel analyzer

• pH/PION，PION/PION

advantage

• Insertion, immersion or valve retractable installation

• 316 stainless steel, titanium, Hastelloy

• Noiseless transmission

• Simple and economical services

• Mix and match the measurement values you have selected