On Sun, 07 May 2017 11:03:51 -0700, mike wrote:

Thanks for the smoke info and the links.
I bought a Nikken at a garage sale, but never had a manual for it.

http://www.learnbydestroying.com/jeffl/Nikken%201394%20Air%20Quality%20Monitor/
The 3 PDF files at the bottom of the directory list are scans of the
user manual. I do not have a service manual.

Some useful information from a previous thread:
http://www.edaboard.co.uk/air-pollution-particulate-sensor-package-t532756,start,15.html

There are a bunch of new units for sale on eBay.
http://www.ebay.com/sch/i.html?_nkw=nikken+1394
--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558