Gas & Flame Detection in Chemical Production
Improve safety at chemical plants with reliable flame & gas detection solutions
Dependable Gas Leak & Flame Detection
Chemical production involves the use and production of many hazardous substances, including both toxic and hydrocarbon gases. Every facet of a chemical plant should be monitored, to ensure the safety of onsite personnel and facilities, as well as neighboring areas. Chemical manufacturers that mix and distill combustible chemicals need broad gas detection and flame detection solutions, especially in distillation columns, tank farms and other storage facilities. Chemical distributors should also implement gas monitoring systems to detect leaks in tanks, pipelines, mixing equipment, valves and compressors. Gas leak monitoring and flame detection should also be installed at loading docks for maximum safety. Rosemount™ gas detectors monitor and detect combustible gas vapors, triggering warning systems and helping to prevent a potential fire. If a fire does start, Rosemount flame detectors can detect flames of differing fuel types and at various distances to help keep people and assets safe.
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Product Solutions
The Rosemount 928 Wireless Gas Monitor detects hydrogen sulfide (H
2S), carbon monoxide (CO), and oxygen depletion (O
2) in remote applications previously too challenging and costly to monitor. This wireless toxic gas monitoring system enhances worker safety through early gas leak detection, simply integrates with
WirelessHART® technology, and eliminates the need for expensive wiring. The Rosemount 928 Wireless Gas Monitor easily connects to the Rosemount 628 Universal Gas Sensor which consists of a tool-less-hot-swappable smart sensor module.
- Hot-swappable electrochemical sensor module with end-of-life diagnostics can be installed in the field without tools
- Replaceable, intrinsically safe lithium-thionyl chloride power module has over two years of service life and can be easily exchanged in hazardous field locations
- WirelessHART technology is secure, cost-effective and delivers >99% data reliability
Operating Temperature
H2S: -40 °F to +122 °F (-40 °C to +50 °C)
O2 Depletion: -22 °F to +122 °F (-30 °C to +50 °C)
CO: -22 °F to +122 °F (-30 °C to +50 °C)
O2 Depletion: -22 °F to +122 °F (-30 °C to +50 °C)
CO: -22 °F to +122 °F (-30 °C to +50 °C)
Update Rate
1 second to 60 minutes, user selectable
Time Constant / Response
H2S:
- T20 < 8 seconds
- T50 < 10 seconds
- T90 < 45 seconds
- T90 < 15 seconds
The Rosemount 925FGD Gas Detector uses non-dispersive infrared (IR) technology and provides early combustible gas leak detection within your processes. As the first Rosemount designed and engineered fixed gas detector, it offers industry-leading features and performance specifications for a wide variety of combustible gas detection needs. The fixed gas detector utilizes the Rosemount 625 Gas Sensor and is approved to the latest hazardous area and performance standards for worldwide use.
- Gas transmitter can be fitted with a wide range of combustible gas sensors and recognizes a newly fitted gas sensor, automatically uploading the gas sensor’s specific configuration profile
- Gas sensor and transmitter continuously communicate digitally, providing stable, accurate protection with fast response times even over long separation distances
- Rosemount 925FGD gas detector offers best-in-class performance specifications for combustible gases including accuracy, response time, operating temperature ranges, and zero drift specification
Operating Temperature
-40 to +158 °F (-40 to +70 °C)
-67 to +158 °F (-55 to +70 °C) with heater on
-67 to +158 °F (-55 to +70 °C) with heater on
Measurement Type
Gas concentration levels: Hydrocarbon gases: 0-100% LEL
Sensor Type
Rosemount 625 Non-Dispersive Infrared Sensor
The Rosemount 975MR Multi-Spectrum Infrared Flame Detector accurately analyzes the multi-spectral signals of hydrocarbon gas or liquid fires by utilizing four separate IR sensors. The 975MR detects fuel and gas fires at long distances. For example, this product will detect a 1 ft2 (0.1m2) gasoline pan fire at 300 ft (90 m). The 975MR also provides a high immunity to false alarms and enhanced overall coverage range.
- Maximum flame detection range of up to 300 ft (90m)
- Six sensitivity levels, adapting to any application
- High speed response time under 50 msec (Exp./1 sec)
Communication Protocol
Optional HART™ communications on the 0-20 mA analog current (FSK) - used for maintenance, configuration changes and asset management, available in mA source output wiring options. RS-485 Modbus compatible communication link that can be used in computer controlled installations
Ambient Temperature
Operating & Storage: -76 °F to +185 °F (-60 °C to +85 °C)
Enclosure Rating
Stainless Steel 316L with electro polish finish
Heavy duty copper free aluminum (less than 1%), polyurethane painted
Heavy duty copper free aluminum (less than 1%), polyurethane painted
The Rosemount Incus Ultrasonic Gas Leak Detector utilizes four ultra-sensitive acoustic sensors that constantly monitor wide areas for ultrasound generated from the release of pressurized gas. Ideally suited for monitoring well-ventilated outdoor environments, the ultrasonic gas leak detector has been engineered to withstand the most extreme conditions and is unaffected by inclement weather, wind, leak direction, and gas dilution or stratification.
- Instantaneous response to all gas leaks (toxic gases, combustible gases or inert gases)
- No calibration required
- Quad sensing heads provide the widest overall gas detection range available on the market: 2 to 40 meters (7 to 130 feet)
Mounting
AISI 316 Stainless Steel (included)
Power Supply
15 - 30 Vdc (24Vdc)
6 W - standard operation
6 W - standard operation
Certifications/Approvals
IECEx ITS 10.0004X
ATEX Ex d ib IIB+H2T4 Gb (Tamb -40 °C to +85 °C); (Tamb -55 °C to +85 °C) option
c FM us CL1 Division 1, GP B, C, D T4
CL1 Zone I, AEx/Ex d ib IIB+H2 T4
EAC RU C-GB.ГБ04.B.00297
KOSHA: 14-KB4BO-0294X
INMETRO UL-BR 15.0063X
ABS: 13-LD1021861
DNV: A-13745
SIL 2 suitable
EMC: EN 50270 2006, EN 61000-6-3 2007, EN 61000-6-2 2005
ATEX Ex d ib IIB+H2T4 Gb (Tamb -40 °C to +85 °C); (Tamb -55 °C to +85 °C) option
c FM us CL1 Division 1, GP B, C, D T4
CL1 Zone I, AEx/Ex d ib IIB+H2 T4
EAC RU C-GB.ГБ04.B.00297
KOSHA: 14-KB4BO-0294X
INMETRO UL-BR 15.0063X
ABS: 13-LD1021861
DNV: A-13745
SIL 2 suitable
EMC: EN 50270 2006, EN 61000-6-3 2007, EN 61000-6-2 2005
The Rosemount 935 Open Path Combustible Gas Detector provides continuous monitoring for hydrocarbon gases, even in harsh environments where dust, fog, rain, snow or vibration can cause high amounts of obscuration. This combustible gas detector utilizes infrared technology and has long range detection up to 660 ft (200 m). Worldwide approvals for the Rosemount 935 Open Path Combustible Gas Detector include ATEX, IECEx, FM/FMC, INMETRO, TR CU, and SIL 2 (TÜV).
- Accurate, high speed response time (< 3 seconds)
- High immunity to false alarms
- Heated optics for use in extreme environments
Time Constant / Response
T90≤ 3 Seconds
Sensitivity Range
0-5 LEL.m methane and propane
0-8 LEL.m ethylene
0-8 LEL.m ethylene
Spectral Response
2.0 - 3.0μm
