Multiple AGM’s

TERMINATOR

“IN”

AMD800

MULTIPLE AGM300’S WITH ADM800

NOTE 1: The last AGM300 or ADM800 on either end of the network must have its terminator in the “IN” position, and all other units must have their terminators in the “OUT” position.

NOTE 2: The total length of the RS-485 cable cannot exceed 4500 feet. (Use instrument cable 20 gage multi-strand shielded and twisted pair – similar or equal to Belden cable #8762.)

RS-485 CONNECTIONS BETWEEN AGM300’s

RS-485

NOTE: The terminators in the ADM800 and AGM300 Unit 4 must be in the “IN” position. The terminators in AGM300 Units 1, 2 & 3 must be in the “OUT” position.

AGM300

 

 

AGM300

 

UNIT 1

 

 

UNIT 2

 

NODE 1

 

 

NODE 2

 

TERMINATOR

TERMINATOR

“OUT”

 

“OUT”

AGM300

UNIT 3

NODE 3

TERMINATOR “OUT”

AGM300

UNIT 4

NODE 4

TERMINATOR “IN”

Connecting to a Building Management System

The AGM300 may be connected to a Building Management System via the RS-485 connector. The node address switch on each AGM300 may be set from “1” to “15” in order to identify itself to the Building Management System. Note that Building Management Systems set to a “0” or “1” address both respond to messages from the ADM800 as address “1” therefore you should not have a unit set to “0” and another set to “1” on the same network.

If the AGM300 network is connected directly to a Building Management System it may not be connected to the ADM800. However, the ADM800 has two communication ports, an “upstream” port (labeled TO HOST) and a “downstream port (labeled TO MONITORS). A BMS node may be connected to the up stream ADM800 port while the downstream ADM800 port talks to the AGM300’s. In this case, the BMS is talking “through” the ADM800 to the AGM300’s, but not physically on the AGM300/ADM800 network.

NOTE: If the AGM300 is not at the end of the line in a series connection, then the terminator on the AGM must be set to “OUT.” Also, each end of the series must have the terminator set to “IN”.

MULTIPLE AGM300'S CONNECTED TO A BUILDING MANAGEMENT SYSTEM

AGM300

NODE 1

TERMINATOR

“IN”

TERMINATOR

“OUT”

BMS

AGM300

 

 

 

AGM300

 

NODE 2

 

 

 

NODE 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TERMINATOR

TERMINATOR

“OUT”“OUT”

AGM300

NODE 4

TERMINATOR “IN”

12

Instruction 3015-4275

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Bacharach ADM800 manual Multiple AGM’s, Connecting to a Building Management System, RS-485 Connections Between AGM300’s

AGM300, ADM800 specifications

The Bacharach ADM 800 and AGM 300 are advanced analyzers designed for efficient monitoring and detection of gases in various applications. Known for their reliability and accuracy, these instruments cater to commercial and industrial sectors, ensuring safety and compliance with environmental regulations.

The Bacharach ADM 800 is a portable gas detection device renowned for its ability to detect multiple refrigerants. With a user-friendly interface, it features a high-resolution display that provides real-time data on refrigerant concentrations, allowing technicians to quickly identify leaks during maintenance operations. One of its standout technologies is a highly sensitive thermal conductivity sensor, which enables the ADM 800 to differentiate between various hydrocarbon refrigerants with precision.

Equipped with data logging capabilities, the ADM 800 can store and retrieve measurement data, making it an invaluable tool for tracking refrigerant trends over time. The device supports USB connectivity for easy transfer of data to computers, facilitating detailed reporting and analysis. Its robust design incorporates a protective casing that ensures durability in challenging work environments, making it ideal for both field use and stationary applications.

On the other hand, the Bacharach AGM 300 is specifically crafted for continuous gas monitoring in HVAC systems. This stationary device excels in measuring concentrations of gases such as CO, CO2, and various refrigerants, ensuring optimal performance and compliance. The AGM 300 uses advanced electrochemical sensors for precise gas measurements, providing real-time feedback and alerting users to any hazardous conditions.

One of the notable features of the AGM 300 is its ability to integrate seamlessly with building management systems, enabling centralized control and monitoring of gas levels across multiple locations. This connectivity enhances the safety of industrial and commercial spaces by allowing for automated responses to detected gas levels, which can significantly mitigate risks associated with gas leaks.

Both models emphasize user-centric design, with intuitive interfaces and clear displays, making them accessible even to those with minimal training. Additionally, their low maintenance requirements and long sensor life contribute to reduced operational costs.

In conclusion, the Bacharach ADM 800 and AGM 300 are exemplary solutions for gas detection and monitoring. Their advanced technologies, robust features, and user-friendly designs make them indispensable for ensuring safety and regulatory compliance in various environments.