Section 5

Probes must be calibrated to the sampler each time they are cleaned or replaced. Regular inspection and comparison to a hand-held pH meter can help determine the optimum cleaning and calibration schedule for specific applications.

1.From the Main Menu, select OPTIONS > ADVANCED OPTIONS >

CALIBRATION > pH.

2.Place the pH probe into the first buffer solution, then press any key to continue.

3.Enter the temperature of the first buffer solution using the numeric keypad. Press ACCEPT to continue.

4.Select the pH for the first buffer solution (4, 7, or 10 pH) using the

CHANGE CHOICE key, then press ACCEPT.

5.Remove the probe from the first buffer solution, rinse it under distilled water and place it into the second buffer solution (4, 7, or 10 pH, different from the first buffer used). Press any key to continue.

6.Select the pH for the second buffer solution using the CHANGE CHOICE key, then press ACCEPT.

If the pH probe is damaged and cannot be calibrated or if the buffer solutions do not fall within an acceptable range, an error message will be displayed as shown below.

11:00 AM 21 - APR - 01

ERROR MESSAGE

pH CALIBRATION FAILED-GAIN AND/OR OFFSET OUT OF RANGE TRY AGAIN

(PRESS ANY KEY TO CONTINUE)

Another attempt at reading the second buffer solution will be made after pressing a key. If this fails, it is likely that you have a bad pH probe or bad buffer solutions. Try a new set of buffer solutions and if that fails try a different pH probe

5.3 ORP Probe

The probes are shipped with a wetting cap that covers the probe tip. Remove the cap by turning it counter-clockwise and gently easing it off. Keep this cap for long-term probe storage. Rinse the probe tip with distilled water.

Store the probe in a pH 4.0 buffer (Cat. No. 22834-49) for both overnight and long term storage. Never store a probe in distilled or deionized water because this will deplete the probe filling solution.

5.3.1 ORP Probe Connection

This connector is for installing the pH or ORP pre-amp interface junction box or a stand-alone temperature sensor. The ORP probe is attached to a terminal strip in the junction box.

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ORP Probe

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Hach 900 MAX manual ORP Probe Connection, Change Choice key, then press Accept
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900 MAX specifications

The Hach 900 MAX is an advanced analytical instrument designed to perform water quality analysis with precision and efficiency. This multiparameter water quality analyzer is tailored for a wide range of applications, including environmental monitoring, wastewater treatment, and industrial processes. Its unique design and technology make it a valuable tool for professionals in the field.

One of the standout features of the Hach 900 MAX is its ability to measure multiple parameters simultaneously. Equipped with advanced sensors, the device can analyze key water quality indicators such as pH, turbidity, dissolved oxygen, conductivity, and various chemical parameters. This comprehensive measurement capability allows users to gain a complete understanding of water quality in a single run, saving both time and resources.

The Hach 900 MAX utilizes cutting-edge technologies to provide accurate and reliable results. Its integrated optical sensors employ advanced photometry, which enhances the detection of chemicals in water samples with high sensitivity. Additionally, the device includes advanced calibration management tools that ensure consistent accuracy over time. Users can easily perform routine calibrations with minimal effort, facilitating reliable data collection.

Another notable characteristic of the Hach 900 MAX is its user-friendly interface. The instrument features a large, touchscreen display that allows for intuitive navigation through various settings and parameters. Users can quickly access real-time data, generate reports, and analyze trends using the built-in software. The ability to customize dashboards and create visual representations of data enhances user experience and simplifies the decision-making process.

In addition to its analytical capabilities, the Hach 900 MAX emphasizes connectivity and data management. The instrument can be connected to laboratory information management systems (LIMS) and other data networks, enabling smooth data transfer and integration into existing workflows. This connectivity enhances collaboration among team members and facilitates compliance with regulatory requirements.

Durability is another hallmark of the Hach 900 MAX. The device is designed for use in demanding environments, with robust construction and protection against dust and moisture. This reliability ensures that the analyzer remains operational even in challenging conditions, making it suitable for field applications.

Overall, the Hach 900 MAX stands out as a powerful and versatile tool in the realm of water quality analysis. With its multiparameter measurement capabilities, advanced sensor technologies, user-friendly interface, and reliable performance, it enables professionals to obtain accurate insights into water quality efficiently. As environmental concerns continue to grow, instruments like the Hach 900 MAX play a crucial role in ensuring the safety and sustainability of water resources.
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