Li-ion battery electrodes are manufactured by casting a slurry onto a metallic current collector. The slurry contains an active material, conductive carbon, and a binder. The binder is pre-dissolved in a solvent, most commonly N-Methyl-2-pyrrolidone (NMP). After mixing, the resulting slurry is cast onto the current collector and then dried. Evaporating the solvent to create a dry porous electrode is needed to fabricate the battery. Drying can take a wide range of time with some electrodes taking 24 hours at more than 120 °C to completely dry.
As concentrations of NMP build up, the risk of explosion increases. An ideal location to detect NMP is within the exhaust duct. By utilizing direct insertion design into the exhaust duct, detection of NMP will be at the center of the duct and able to withstand high temperatures and high concentrations.
The Riken Keiki SD-2500 series is ideal for detecting NMP during the Drying process as it can be inserted directly into the the Exhaust Duct in the Drying line . It has a 250mm insertion for the sensor and can withstand temperatures upto 250 Degrees Centigrade (SD-2700)
For Full spec on the SD-2500 series please see link below
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.
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