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Analytical Technology has released the Q45P pH monitoring system, which can calibrate online, speeding up the production process and optimising pH readings.

The Q45P system is designed for use in all industrial and municipal applications including wastewater treatment, breweries, dairies and pharmaceutical manufacturing.

Off-line calibration and maintenance methods require production to be halted while calibration and maintenance is carried out, leading to delays in production.

Conventional pH sensors have an open reference system, meaning that chemicals can easily diffuse into the reference chamber as the reference element and electrolyte are in contact with the process.

Once the reference junction has been contaminated by chemicals, the reference potential alters and the sensor no longer functions.

Challenges with offline calibration often result in production inefficiency and increased costs.

To overcome these issues, Analytical Technology developed the Q45P with a lock-and-load pH system that allows the user to retract and service the probe online without needing to halt the process or divert sample flows.

The Q45P pH sensor is made with a second glass pH electrode as the reference element.

The glass reference system protects the sensor from chemical poisons that damage conventional pH sensors.

An integral preamplifier is encapsulated in the body of the sensor and generates a low impedance signal output, ensuring stable readings and maximising the distance between sensor and analyser.

A large volume dual-junction saltbridge is employed to minimise contamination of the reference solution.

The Q45P Auto-Clean system has a self-contained compressor and air cylinder, which produces high-pressure air to automatically remove contaminants from the surface of the sensor.

The system significantly reduces maintenance and calibration time, removing the problem of false readings.

The Auto-Clean feature coupled with the system’s online calibration capability maximises the sensor’s service life and lowers the cost and time required for sensor maintenance.

Analytical Technology

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