Appendix B

Distributor Test

The distributor positions the sample tube over the appropriate bottle during multiple bottle sampling. If the distributor arm is obstructed or if a problem exists with the distributor assembly, the arm will not position over the desired bottle correctly.

This test assumes that 24 bottles are installed which is the most difficult to position for the distributor (the most stops and the smallest bottle mouth). Upon selecting the Distributor Test, the arm returns to the bottle #1 position then moves one bottle at a time for all 24 bottle positions. The arm then reverses direction and again stops at all 24 positions on its way back to the bottle #1 position. Make sure no obstructions interfere with the distributor arm rotation.

Event List

The Event List diagnostic provides a time/date stamped list of significant events occurring in the sampler. You can review these events to find out when an event occurred and what events preceded or followed the event of interest. Events may be viewed in chronological order from the beginning or end of the event list by selecting View From Start or View From End.

The event list cannot be erase, even when the program is started. Up to 200 events are logged before the list wraps around and the oldest entry is discarded as each new entry is posted.

Logged events include:

 

 

•

Power On/Off

•

Alarm Activation/De-activation

•

Level Adjustments

•

Calibration

•

Program started, stopped,

• Missed Samples (if liquid sensor

 

halted, or resumed

 

is enabled)

•Error Messages

Keypad Test

Keypad Test provides a simple means of verifying the operation of all front panel keys. Select Keypad Test from the diagnostics menu to bring up the following screen:

11:00 AM 21 - APR - 01

KEYPAD TEST

QUIT

KEYPAD PRESSED:

5

PRESS ANY KEY

Pressing any key on the front panel (except for the upper left soft key) will cause that key label to appear in the center of the display.

All numeric keypad keys, soft keys, and function keys may be tested in this manner. To end, press QUIT (this also verifies the upper left soft key operation).

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Programming Features

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Hach 900 MAX manual Distributor Test
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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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