Industrial Gas Detection Solutions for Toxic Gas, Combustible Gas and Oxygen Deficiency/Oxygen Enrichment
Sensidyne provides reliable instrumentation for the monitoring of toxic, combustible and oxygen gases in industrial markets worldwide. We service a wide range of industry from oil & gas, petrochemical, water & wastewater, manufacturing, power generation and beyond. Our equipment enhances safety while minimizing costs of ownership and range from simple monitors to complete plant-wide hazardous gas monitoring systems. From point gas monitors and Senscient ELDS open path gas detection to confined space entry portables; we can complete your gas detection system while minimizing your maintenance requirements. In addition to our gas detection instruments Sensidyne also provides a wide range of controllers and electro-optical flame detection (UV/IR/VIS & Triple IR).
Transmitters
Gas detection transmitters are available in many configurations. Sensidyne delivers transmitters that are rich in features yet ease maintenance burden.
Our premier transmitter is SensAlert Plus, a universal transmitter that accepts toxic, combustible or oxygen sensors within the same transmitter. SensAlert Plus has an intrinsically safe sensor head which can be remote mounted up to 100 feet (30m) from the transmitter only using standard rigid conduit. This transmitter is excellent for new or retrofit installations as 2 and 3-wire configurations are available. Standard on-board relays are fully assignable for faults, warnings and alarm conditions over standard 4-20mA output; additional relays and communication options are available. For more information on SensAlert Plus as well as our full gas detection transmitter offering, click here.
Sensors
The heart of a gas detection system is the sensor. Sensidyne gas detection sensors are available in electrochemical, oxygen, infrared (IR) and catalytic-bead (CatBead) and in ranges to meet your needs. For more information on our sensors and a list of our available sensors and ranges, click here.
Controllers
Sensidyne offers our customers many controller options for their gas detection needs, single through 16 channel models are available. Integrating a controller into a safety system is easily done via many communication, annunciation and add-on options. Visit our controller page here for more information.
Electro-Optical Flame Detectors
Flame detectors are an intricate piece of any gas and fire safety system. Sensidyne offers flame detectors that are false-alarm immune – because the key to flame detection is not only seeing a fire, but not seeing a fire when one is not present. We deliver flame detectors that see all types of fires (both hydrocarbon and non-hydrocarbon) with a wide field of view at distances up to 200 feet (61m)
Portables
Sensidyne recently introduced the Observer portable gas detector; the only portable gas monitor designed specifically for the confined space entry market. The Observer has the ability to split into two separate units, a receiver and transmitter, so the transmitter can be lowered or raised into an area of concern. This unique feature protects users from entering an area without knowledge of internal conditions. For more information on the Observer, click here.
Hazardous Gas Detection
The detection of hazardous gases has always been a complex subject and makes choosing an appropriate solution difficult. Sensidyne provides hazardous gas monitoring solutions for the protection of personnel and property against toxic and combustible gases as well as monitoring for oxygen deficiency and enrichment. In addition to gas detection and monitoring we provide high quality flame detection products as well.
There are three main types of gas detection products:
- Point Gas Detectors and Monitors – These instruments are designed to detect gas within a specified area and are often placed in a location where hazards are likely to occur.
- Open Path Gas Detectors – These instruments are designed to cover a wide area and to detect gas which passes through its line of sight.
- Portable Gas Monitor – A small instrument affixed to a worker during their shift to detect hazards as they work.
Point Gas Detectors / Point Gas Monitors
Point Gas Detectors / Point Gas Monitors may also be known as fixed monitors as they are designed for monitoring in a fixed area. They work through diffusion and as gas is released or builds up it monitors and indicates the concentration. There are typically two pieces of a point gas detector; the transmitter and sensor.
Transmitters are the brain of the gas detector and house the electrical and communication components. Most transmitters include a user interface through which a user can retrieve data, change settings and perform maintenance tasks. Since transmitters house the brains of the monitor they also must withstand corrosion and weather as well as explosion proof, intrinsic safety and other hazardous area requirements. Relays and communication options are also common to most transmitters as they are usually wired to a DCS or central control room. The most common communication is performed over a 4-20mA system through which the transmitter communicates gas concentration, faults and warnings.
While transmitters are the brain of the gas monitor, sensors are the heart. Gas sensors are transducers that detect gas molecules and produce an electrical signal proportional to the concentration of the gas. Gas sensors work in two methods, some detect one specific gas while eliminating readings from other background gases while output a quantitative value of the concentration of every gas present. To meet the needs of many applications many different sensor technologies exist – most common are: electrochemical, catalytic bead (catbead), infrared (IR) and photoionization (PID). Sensors plug into the transmitter either directly or through a sensor head which is remotely mounted away from the transmitter. Remote mounting is done to place the sensor closer to where a hazard may exist while locating the transmitter in a location that is easier to service.
Open Path Gas Detectors (OPGD)
Designed for effective monitoring for gases over a wide area, OPGD systems provide early warning of catastrophic events. Open path gas detection instruments complement point gas detectors as a component of a total gas detection system. OPGD systems can be installed to monitor a line of potential hazard sources such as perimeter monitoring, tank farms or a row of pumps or valves. OPGD instruments provide a very quick response to low levels of gas and allow for mitigation prior to the hazard growing.
Open path gas detectors are comprised of two separate units, a transmitter and receiver. The transmitter emits a light source, either infrared or laser, across the path length to measure gas concentration. The receiver then processes the data and outputs a gas concentration averaged over the path length. Modern OPGD uses lasers and are far more accurate that older open path infrared systems.
Why Senscient ELDS™ OPGD:
- Three orders of magnitude (1000 X) better sensitivity for hydrocarbon gases
- Single digit ppm.meter detection of toxic gases in the OPGD configuration
- Harmonic Fingerprint™ technique makes gas detection species-specific on a molecular level for absolute selectivity while eliminating false alarms of any kind
- Senscient ELDS offers the ability to simultaneously detect two gases with dual isolated output signals for applications such as sour gas (Methane + H2S)
- No more test filters, no more gassing cells, no hazardous calibration gases in the field, no technician time
- Substantially better obscuration and misalignment tolerance providing easier setup
- ELDS OPGD from Senscient is certified both for Hazardous Area Class 1, Division 1, and Zone 1 by FM Global, ATEX and CSA, and is also Performance Approved by FM Global and ATEX
For more information on Senscient ELDS™ OPGD systems click here.
Articles from our
Gas Detection Academy
A collection of brief gas detection articles, tables and reference material for the beginner to advance safety professional. If there you have a question or would like to see specific material, contact us and we would be glad to assist.