Section 6

Figure 27 Single Relay Wiring Inside the Relay Junction Box

6.4.2 Alarm Relays Programming

Program alarms activate based on certain conditions (low battery, low memory, etc.). When an alarm is tripped, an action is initiated (report via modem, dial a pager, or set a relay). There are two types of alarms: Trouble Alarms and Set Point Alarms.

6.4.2.1 Trouble Alarms

Trouble Alarms initiate an action when a trouble condition occurs. For example, a relay may close when the memory is full. Refer to Troubleshooting and Error Messages on page 127 for more information on trouble alarms.

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

2.Select one of the trouble conditions.

3.Select an action to occur when the alarm is activated. The table below lists each Trouble Condition. Refer to Appendix C on page 127 for causes and solutions.

Trouble Conditions:

 

 

•

Low Main Battery

•

Memory Battery

•

Low Slate Memory

•

Slate Memory Full

•

Modem Failure

•

Missed Sample

•

Purge Failure

•

Jammed Distributor

•RS485 Timed Out

Alarm Actions:

 

 

•

Set Relay #1

•

Set Relay #2

•

Set Relay #3

•

Set Relay #4

•Report Via Modem

6.4.2.2 Set Point Alarms

Set Point Alarms look for trip points to be reached (either high or low or both) before initiating an action. For example an initiated action may be the closing of a relay when the water level exceeds 60 cm (24 in.) or drops below 10 cm (4 in.) Set Point Alarms activate when a user-definable high and/or low set point is reached.

 

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8990cm.fm

Alarm Relays

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Hach 900 MAX manual Alarm Relays Programming, From the Main Menu, select Setup Advanced Options Alarms
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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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