ABB AX400 series low conductivity analyzer(AX411/511010)

（5） Minimize annual maintenance costs

The AX400 series comes standard with 85-265V AC wide voltage power supply, no internal switch needs to be set, and supports 24V AC or 12-30V DC power supply. The equipment can automatically identify the power supply type; The 12-30V DC power supply option eliminates expensive annual safety testing, significantly reducing maintenance costs and labor investment. In addition, ABB conductivity sensors are pre calibrated at the factory and do not require additional adjustments after installation. The sensor structure is sturdy and the measurement values are stable for a long time. The single point calibration function is only activated when needed for on-site verification, further reducing maintenance workload.

（6） Ultra wide industry applicability

With flexible measurement configuration, precise performance, and compliant design, the AX400 series can adapt to multiple industries such as water treatment and wastewater treatment, power pure water treatment, semiconductor manufacturing, chemical, pharmaceutical, pulp and paper, etc. Whether it is conventional low conductivity monitoring, high-purity water preparation, reverse osmosis process, boiler water monitoring, or purified water/injection water detection in the pharmaceutical industry, stable and reliable measurements can be achieved.

Core functional feature: Integration of precise measurement and intelligent control

（1） Single/dual input measurement: full coverage of multiple parameters and calculation functions

The single/dual input models of the AX400 series can achieve precise measurement of low conductivity. The measurement units can be flexibly configured as μ S/cm, μ S/m, mS/cm, mS/m, and can also be set as megaohm centimeters (M Ω - cm), total dissolved solids (TDS), and salinity. The measurement range can be programmed from 0-0.5 to 0-10000 μ S/cm (adjusted according to different electrode constants), with a minimum range of 10 times the electrode constant and a maximum range of 10000 times the electrode constant, meeting the measurement needs of different low conductivity scenarios.

In addition to basic measurement, the dual input model can also achieve the calculation, display, and signal transmission of ratio, difference, pass rate, removal rate, and calculated pH. These functions are key analysis tools for desalination, reverse osmosis, ion exchange, and other processes: pass rate is (tank 1/tank 2) × 100, removal rate is (1-tank 1/tank 2) × 100, and ratio is the ratio of the measured values of tank 1 and tank 2, which can intuitively reflect the processing efficiency of the process. For example, in the reverse osmosis process, the removal rate of the process can be quickly calculated by measuring the conductivity of the raw water and the produced water, providing data basis for process adjustment.

（2） Exclusive Function Model: Targeted Solution to Industry Scenario Requirements

The AX400 series models have been specially designed according to their functional positioning, which can accurately match the application needs of different industries. The functional differences and positioning of the core models are as follows:

AX411: specializes in cation conductivity and pH measurement, suitable for low conductivity scenarios such as ammonia boiler water. The device can calculate the pH based on the conductivity value and the preset ammonia concentration, without the need to configure a pH electrode, reducing the maintenance cost and failure probability of the pH electrode; At the same time, the conductivity value after cation exchange is detected through the second input to achieve self-monitoring of pH measurement effectiveness. Alarm contacts such as cation conductivity, invalid pH, and resin depletion can be configured to provide safety guarantees for boiler water quality monitoring.

AX410: The only model with a built-in P/PI/PID three action controller, supporting three control modes: analog, pulse width (time ratio), and pulse frequency. It can be set to positive or negative action and is suitable for low conductivity processes that require closed-loop control. The proportional band, integration time, and differentiation time of the controller can be programmed, with a pulse period of 1.0-300.0 seconds and a pulse frequency of 1-120 times/minute. It can directly drive the actuator and achieve automatic adjustment of process parameters.

AX416: Achieve combined measurement of conductivity and pH/ORP, with one device capable of monitoring two key water quality parameters. Equipped with pH/mV input, solution and temperature sensor interfaces, it can connect glass/enamel pH electrodes, reference electrodes, and ORP sensors. The pH measurement range is -2 to 16, and the ORP is -1200 to+1200mV, with an accuracy of 0.01pH, meeting the needs of scenarios that require both conductivity and pH monitoring (such as chemical wastewater treatment and pure water preparation). In addition, the AX416 is equipped with sensor cleaning function, which can achieve continuous or pulse cleaning through relay contacts. The cleaning frequency, duration, and recovery time can be programmed to reduce sensor contamination and ensure measurement accuracy.