On Mon, 9 Feb 2004 16:57:21 +0100, you wrote: >> http://www.figarosensor.com > >Accuracy 'approximately 20%' :( > >I need 10% or better after 1 year. > >> I've used them in the past. >> Good products, good service, but they are a bit pricey. > >I don't expect anything cheap. Draeger make a huge range of gas monitoring stuff :=20 http://www.draeger.com/ST/internet/US/en/Industries/GDS/gds_engineering.j= sp How about this : http://www.draeger.com/ST/internet/US/en/Industries/GDS/General/Toxic/Ind= ustrial/PolytronIRCO2/ggi_polytron_ir_co2.jsp Ises infra-red detection, 4-20mA output Long term drift 0.03%, repeatability 0.05% -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body