Section 1

1.2.1 Keypad Description

The keypad includes the numeric keypad, soft keys, and function keys.

Numeric Keypad

The numeric keypad consists digits 0 through 9, a +/- key, and a decimal key.

“Soft” Keys

Soft keys are blank, white keys located to the left and right of the display. If no function is shown for a specific key, that key is not currently active. The soft key labels appear on the display and indicates (with a straight line) the proper soft key to push for that action.

In some cases during a programming step an item from a list needs to be selected. The soft keys on the right side of the display will change to display UP and DOWN arrows. Scroll through the list of choices.

Power ON/OFF Key

To turn the instrument on, press the ON key. When the instrument is turned on, a green light located next to the ON key flashes to indicate that the sampler power is turned on. To turn the instrument off, press the OFF key.

Function Keys

Three white function keys (Table 1) are located just above the numeric keypad re used often while operating the sampler. These functions are dedicated keys to allow quick access.

Table 1Function Key Descriptions

Function Key

Main Menu

Description

This is the starting point to get to any other point in the program. Press the Main Menu key at any time during programming to return to the Main Menu Screen. The current action is cancelled if changes are not yet accepted.

Manual Mode

Manually controls the operation of the sample pump and the distributor arm.

ADVANCED DISTRIBUTOR soft key: Moves the distributor arm to the user selected bottle. Used to verify the operation of the distributor or when repositioning the arm if it was moved by hand.

GRAB SAMPLE soft key: Takes a sample in the same manner as when a program is running. Includes all pre-rinses and sample retries, if programmed.

PUMP OPERATION soft key: Allows manual control of the pump in both forward and reverse directions. Once started, the pump is stopped by pressing any key.

Run/Stop

Runs (or resumes) a program and stops a currently running program.

1.2.2 Liquid Crystal Display

The liquid crystal display (LCD) works in conjunction with the four soft keys.

When a soft key changes function, the display shows the new function.

Menu Bar

The Menu Bar appears in a black band on the top edge of the display. The upper left corner of the menu bar shows the time and date. The upper right corner shows the name of the current menu (Figure 1).

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Front Panel

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Hach 900 MAX manual Section, Keypad Description, Liquid Crystal Display
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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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