Section 4

4.Enter the ambient air temperature at the transducer location. For optimum results, allow enough time (100 minutes) to ensure that the sensor is at equilibrium with the surrounding ambient temperature. Press ACCEPT.

5.Select the Liquid Depth method and enter the new level.

6.Take a physical measurement of the liquid depth (level) and enter the value. Press ACCEPT when finished.

4.1.3.2 Sensor Height

This method requires entering the distance between the face of the ultrasonic sensor and the zero flow point in the primary device. The zero flow point in a primary device is the level at which flow ceases. In a round pipe the zero flow point would typically be the invert or bottom of the pipe. In a V-notch weir the zero flow point occurs when the liquid behind the weir is level with the bottom of the ‘V’. (There would still be liquid behind the weir plate but it would not be contributing to flow). Sensor Height calibration is generally used when:

•Access to the primary device is difficult (such as confined space entry in a manhole) or

•There is no liquid flowing during installation of the flow meter

1.From the Main Menu, select OPTIONS>ADVANCED

OPTIONS>CALIBRATION>ULTRASONIC SENSOR.

2.Select Calibrate U-Sonic using the UP and DOWN keys. Press SELECT.

3.Select Standard as the type of Ultrasonic Transducer using the CHANGE CHOICE key. Press ACCEPT to continue.

The speed of sound in air varies with the temperature of the air. The ultrasonic sensor is equipped with temperature compensation to help eliminate the effect of temperature variation under normal site conditions.

4.Enter the ambient air temperature at the transducer location. For optimum results, allow enough time (100 minutes) to ensure that the sensor is at equilibrium with the surrounding ambient temperature. Press ACCEPT.

5.Select the Sensor Height method and enter the new level.

6.Enter the distance from the face of the transducer to the zero flow point of the primary device.

7.Press ACCEPT when finished.

4.1.3.3Setting the Invisible Range

1.From the Main Menu, select OPTIONS>ADVANCED

OPTIONS>CALIBRATION>ULTRASONIC SENSOR.

2.Select the Invisible Range option using the UP and DOWN keys. Press SELECT to continue.

3.Enter the Distance to End of the Invisible Range.

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Hach 900 MAX manual Sensor Height, Downlook Ultrasonic Sensor
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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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