Catalytic combustion sensors are the standard method for detecting combustible gases including Hydrogen, however in order to operate a minimum of about 10% Oxygen needs to be present. IR sensors are a good solution to this problem for measuring most combustible gases in an inert environment where O2 levels are below 10% volume but IR sensors cannot detect Hydrogen.
Riken Keiki offers several solutions around this problem.
Fixed TC Sensor: Riken offers the GD-A80N Detector Head with a Thermal Conductivity sensor which can operate in zero O2 environments with range options of 0-5%, 0-10% and 0-100% Volume Hydrogen.
Portable TC Sensor: Riken offer NP-1000-H2 with a Thermal Conductivity sensor which can operate in zero O2 environments with a dual range of 0-10% and 0-100% Volume Hydrogen this is auto ranging.
Interferometer: Riken also is a leader in Interferometer technology that measures the refractive index of a known gas in a known background gas, very accurately. It is therefore ideal for measuring Hydrogen in Nitrogen or CO2. Riken have the FI-8000 portable and FI-900 fixed solutions.
GD-A80N Combustible Gas Detector Head can detect Combustible gas including Hydrogen in an inert environment of Nitrogen, CO2, Argon etc
NP-1000-H2 Portable pumped combustible Monitor for detection of Hydrogen in an inert environment with 0-10% / 0-100% Vol range auto-ranging
FI-8000 Interferometer can measure Hydrogen in Nitrogen or Carbon Dioxide range 0-100% Vol with accuracy of 3% of the reading. It can also have multiple ranges up to 8 in same instrument for example CO2 in Air as well as H2 in CO2 for purging applications.
FI-900 Fixed Interferometer Gas Analyser can measure Hyrogen in Nitrogen or Carbon Dioxide as part of a production process, ranges of % Vol and % LEL are available in the same instrument.
Plant rooms are often situated underground. This is by design to save space or by virtue of being built into existing basements or chambers. Underground Plant Rooms often contain an array of machinery such as Pumps, Boilers, Sprinkler Systems or Generators.
View StoryDisclaimer : Information given in this article is for general guidance only, and is based on experience and is not intended to replace advise from professional gas sensor location experts and/or gas mapping services, that can provide accurate bespoke design.
For more information about positioning fixed gas detectors, further guidance can be found in the new Gas Mapping Standard BS 60080 (Fire and Gas Mapping ), IEC 60079-29-2 (Explosive atmospheres – Part 29-2: Gas detectors – Selection, installation, use and maintenance of detectors for flammable gases and oxygen), and also EN 45544-4 (Workplace atmospheres – Electrical apparatus used for the direct detection and direct concentration measurement of toxic gases and vapours. Guide for selection, installation, use and maintenance.). Additionally, The CoGDEM ( Council of Gas Detection and Enviromental Monitoring ) Guide to Gas Detection is an excellent general user guide for Gas Detection, written by those in the industry.
View StoryCatalytic combustion sensors are the standard method for detecting combustible gases including Hydrogen, however in order to operate a minimum of about 10% Oxygen needs to be present. IR sensors are a good solution to this problem for measuring most combustible gases in an inert environment where O2 levels are below 10% volume but IR sensors cannot detect Hydrogen.
Riken Keiki offers several solutions around this problem.
View Story
