Section 2

Important: Whenever electricity is present, there is a possibility of electrical shock. Before connecting the sampler to an ac power source, the following safety precautions should be taken:

•Check the power source to make sure that it satisfies the ac power requirements of the sampler.

•Make sure that all electrical installations and connections are in accordance with national and local electrical codes.

•Before performing any maintenance, disconnect the sampler from the power source.

•Do not attempt to make any connection or otherwise handle the electrical components of the sampler when connected to ac line power if the immediate area is wet, or if hands or clothing are wet.

•If the circuit breaker or fuse in the ac power source is tripped, determine the cause before restoring power to the sampler.

•Make sure the power circuit is grounded and protected with a Ground Fault Interrupter (GFI).

2.9Auxiliary Receptacle Pin Identification

Pin A/White (12 V dc)

Powers an external device or flow meter. Must be used in conjunction with Pin B (ground).

 

 

Pin B/Blue (Ground)

Connected to dc ground and is isolated from the earth ground found in the ac power line.

 

 

 

With the sampler in Flow Proportional mode and connected to an external flow meter, a 5 to

 

12 V dc input pulse lasting at least 25 milliseconds will cause the sampler to decrement one

Pin C/Yellow (Pulse Input)

count. The 12 V dc line found on Pin A can be used directly with a simple contact closure to

Pin C or an external 5 to 12 V dc pulse may be applied providing the ground side of the

 

 

external signal is connected to the sampler ground at Pin B. This count is actuated at the

 

beginning of the input signal (the leading edge of the pulse).

 

 

 

 

This line is held at 5 V dc inside the sampler. When shorted to ground (Pin B), a signal is sent

 

to the microprocessor inside the sampler causing it to “wake up” and begin or resume its

Pin D/Black

sampling program. It can be used in conjunction with a simple level float to actuate the

(Liquid Level Actuator/

sampler when liquid is present or to take over after a second sampler has finished its

 

Auxiliary Control Input)

program. It may also be used with any device (such as a pH meter) that produces a dry

 

contact output to control the sampler in response to some user-defined condition (i.e. high or

 

low pH); must be used in conjunction with Pin B.

 

 

 

Pin E/Red (Special Output)

Normally at 0 V dc, this line goes to 12 V dc upon any of the selected events described in.

 

 

 

Normally an open circuit, this line switches to ground for 90 seconds at the conclusion of the

Pin F/Green

sampling program. Used to “wake up” another sampler to take over sampling or to signal an

operator or data logger upon the completion of the sampling program. This pin is also used to

(Program Complete Output)

 

signal the bottle full condition in a single bottle/continuous mode, and will transmit the bottle #

 

to an 950 Flow Meter if the program complete signal is disabled.

 

 

 

 

 

 

 

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Auxiliary Receptacle Pin Identification

8990hrd.fm

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Hach 900 MAX manual Auxiliary Receptacle Pin Identification
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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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