Model 3100 Series Flame Detector

The Sierra Monitor Model 3100 Series Flame Detector utilizes Ultraviolet, Infrared and Visible spectrum to pro- vide continuous and reliable flame detection. Flame de- tectors incorporating just IR or just UV can experience false alarms. Even some IR/UV detectors can experience false alarms. But the Model 3100 incorporates a unique three spectra design. This provides the Model 3100 with enhanced false alarm rejection. An additional benefit of this design is the ability of the Model 3100 to detect flame from hydrocarbon and non-hydrocarbon sources, mak- ing it the ideal product for typical chemical/petrochemical plants where the flame source could be from a variety of gases.

The microprocessor in the Model 3100 is programmed with state-of-the-art fire algorithms and continuously ana- lyzes the data from the sensor array for individual inten- sity values, change of intensity values, relationship of in- tensity values, and frequency signature correlations. Each algorithm is designed to recognize a different type of flame signature from the detectors while rejecting common false sources. When the conditions of any one of the several fire algorithms are met the Model 3100 declares a fire.

When the alarm decision is made in the microprocessor, the detector stores the pre-fire spectral data in nonvolatile memory and outputs an alarm signal in the form of a relay transition. The enhanced relay models also include a sec- ond alarm relay available for alarm verification purposes. The verification level is field selectable.

Field of View

The Model 3100 is the only flame detector that provides RS-232 access to pre-fire spectral data and diagnostic information. Self diagnostic features of the micro-processor continuously perform system tests, watching for any faults which would impair its ability to accurately detect a flame and declare an alarm. The sys- tems being checked include input power, sensor circuits, relay circuits and several other internal systems. The Model 3100 also performs a through-the-lens test of the sensor and lens systems. All faults are recorded in non-volatile memory and may be retrieved at any time by the operator.

The Sierra Monitor Flame Detector features 120 degree solid cone field of view, the widest in the industry. The Model 3100 series is in a copper-free cast aluminum NEMA 4X rated explosion proof enclosure.

Detector Response To Various Fuels

Fuel

Distance

Fire Size

Response Time

 

 

 

 

Heptane

80 Feet

1 Square Foot

Less than 3 sec.

 

 

 

 

Silane

50 Feet

18 inch jet

Less than 3 sec.

 

 

 

 

Hydrogen

15 Feet

18 inch jet

Less than 5 sec.

 

 

 

 

Kerosene

75 Feet

1 Square Foot

Less than 5 sec.

 

 

 

 

Sierra Monitor Corporation 1991 Tarob Ct. Milpitas, CA 95035 (408) 262-6611 800-727-4377 FAX: (408) 262-9042

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Sierra Monitor Corporation manual Model 3100 Series Flame Detector, Field of View
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3100 specifications

Sierra Monitor Corporation, a leader in industrial automation solutions, offers a range of products designed to enhance operational safety and efficiency. One of their standout offerings is the Sierra Monitor Corporation 3100, an advanced gas detection and monitoring system engineered for various industrial applications.

The Sierra Monitor Corporation 3100 is particularly notable for its ability to monitor a wide range of hazardous gases, providing facilities with crucial data to ensure the safety of personnel and equipment. It is designed to detect gases such as methane, propane, hydrogen sulfide, and carbon monoxide, making it an essential tool for industries including oil and gas, chemical manufacturing, and wastewater treatment.

One of the main features of the 3100 is its state-of-the-art sensing technology. It employs advanced electrochemical sensors that provide high sensitivity and specificity, ensuring accurate detection of hazardous gases even at low concentrations. This precision not only helps in maintaining compliance with safety regulations but also minimizes the risk of false alarms, allowing operators to focus on critical tasks without unnecessary disruptions.

The Sierra Monitor 3100 is also equipped with robust communication capabilities. It supports various protocols, including Modbus, Ethernet/IP, and Profibus, making it compatible with a wide array of existing systems and allowing for seamless integration into any industrial environment. This connectivity ensures that real-time data from the gas detection system can be transmitted to central monitoring stations, enabling rapid decision making in response to potential hazards.

Another vital characteristic of the 3100 is its user-friendly interface. The system features an intuitive display that provides operators with clear information on gas levels, alarm status, and system health. This ease of use enhances operational efficiency, as personnel can quickly interpret data and respond to alerts without extensive training.

Durability is a key design element of the Sierra Monitor 3100. Built to withstand harsh industrial environments, it complies with strict standards for environmental resistance, ensuring reliable performance in challenging conditions. With a compact and rugged design, it can be deployed in various locations without requiring extensive modification to existing infrastructure.

In summary, the Sierra Monitor Corporation 3100 is an advanced gas detection system that combines precise sensor technology, robust communication capabilities, user-friendly interfaces, and durability to deliver an effective solution for hazardous gas monitoring. Its integration into industrial operations not only enhances safety but also improves overall productivity, making it an invaluable asset for companies committed to maintaining a secure and efficient working environment.
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