Factors: -battery life -type of battery (9V other? ) -storage (volatile?) -logging duration, # of data points -graph v/s numerical display careful, don't saturate the detector head with excess humidity On Mon, Dec 19, 2016 at 1:19 PM, Joyce Koo <[log in to unmask]> wrote: > Ed, Wayne and Brian, > Many thanks for all your help. Fisher is too pricy. I would check the > Sling and Sensirion. > Thanks again. > joyce > > If you can deal with USB interface, I find these are pretty accurate. > > > > http://www.dlpdesign.com/usb/th1.shtml > > > > It uses a Sensirion brand sensor, SHT11 If I remember correctly. > > > > > > > > On Mon, Dec 19, 2016 at 9:05 AM, Joyce Koo <[log in to unmask]> wrote: > > > >> Gurus, > >> can anyone suggest a portable humidity meter capable of range 20-90 %RH, > >> with reasonable accuracy? Many thanks in advance. > >> Regards, > >> joyce > >> > > > > > > > > -- > > Brian Stumm > > ETS, Inc. > > +1-509-276-2015 > > > -- Bhanu Sood Tel: (202) 468-8449