CageyH Posted March 17, 2009 Share Posted March 17, 2009 Can anybody recommend a cheap one? I want to know if I need to sort my exhaust system out before I drive six hours for a test! Only dead fish go with the flow....! Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted March 17, 2009 Share Posted March 17, 2009 Lots at Farnell or - cheaper still Maplin. The Maplin non-contact laser digital thermometer I have is excellent ! edit - don't you use then at work ? Forget to take it out of your pocket as you go home one day ... bring it back the next ? Edited by - Stationary M25 Traveller on 17 Mar 2009 20:57:58 Link to comment Share on other sites More sharing options...
guilleracing Posted March 17, 2009 Share Posted March 17, 2009 Hi, Maplin electronics make a nice one! Ive got one. Greg. Link to comment Share on other sites More sharing options...
jackb_ms Posted March 17, 2009 Share Posted March 17, 2009 I have the one @ 59.99 from Maplin Good little piece of kit, it can also be mounted on a tripod and comes with it own box Jack Emily, The Very Yellow 21 Link to comment Share on other sites More sharing options...
Windy Corner Posted March 18, 2009 Share Posted March 18, 2009 Being in the industry, we have all sorts, although the more expensive ones are supposed to be more accurate i.e. the tolerance in the measuring instrument, a "Precision grade" like the ones we use in work (£2000-£5000) are +/- 0.7 dB, the engineering grade, are I think +/- 1.5 dB. In reality, perhaps read "more accurate" as "more repeatable" I use a Maplin one occasionally, as when working in a hazardous area, people get upset when you drop a £5000 sound Level Meter in a vat of goo !! The accuracy between the two is usually okay but the cheaper ones don't do the greater range of functions (not necessary for simple noise testing) Hope this is helpful Rik Roadsport SV 1.6 Sigma 150 in Viper Blue here Link to comment Share on other sites More sharing options...
Team Escargot Posted March 18, 2009 Share Posted March 18, 2009 Just be aware that noise measurement is logarithmic so + or – 1.5 dBA is a lot! (Also measuring at the correct distance away) So if you measure yours with a less accurate meter and find it just under the max acceptance level you could still drive 6 hours and be disappointed Link to comment Share on other sites More sharing options...
CageyH Posted March 18, 2009 Author Share Posted March 18, 2009 Measurement is at 3/4 max revs (just over 4500 ) @ 7m away, 1.2m above ground level whilst doing a drive by in 3rd gear! Only dead fish go with the flow....! Link to comment Share on other sites More sharing options...
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