Welcome to the Piano World Piano Forums
Over 2 million posts about pianos, digital pianos, and all types of keyboard instruments
Join the World's Largest Community of Piano Lovers (it's free)
It's Fun to Play the Piano ... Please Pass It On!

SEARCH
the Forums & Piano World

This custom search works much better than the built in one and allows searching older posts.
(ad) Pianoteq
Latest Pianoteq add-on instrument: U4 upright piano
(ad) Pearl River
Pearl River Pianos
(ad) P B Guide
Acoustic & Digital Piano Guide
PianoSupplies.com (150)
Piano Accessories Music Related Gifts Piano Tuning Equipment Piano Moving Equipment
We now offer Gift Certificates in our online store!
(ad) Estonia Piano
Estonia Piano
Quick Links to Useful Stuff
Our Classified Ads
Find Piano Professionals-

*Piano Dealers - Piano Stores
*Piano Tuners
*Piano Teachers
*Piano Movers
*Piano Restorations
*Piano Manufacturers
*Organs

Quick Links:
*Advertise On Piano World
*Free Piano Newsletter
*Online Piano Recitals
*Piano Recitals Index
*Piano Accessories
* Buying a Piano
*Buying A Acoustic Piano
*Buying a Digital Piano
*Pianos for Sale
*Sell Your Piano
*How Old is My Piano?
*Piano Books
*Piano Art, Pictures, & Posters
*Directory/Site Map
*Contest
*Links
*Virtual Piano
*Music Word Search
*Piano Screen Saver
*Piano Videos
*Virtual Piano Chords
Topic Options
#101102 - 04/23/08 07:56 AM Accurate hygrometer?
David-G Online   content
1000 Post Club Member

Registered: 01/17/06
Posts: 1228
Loc: London
Is it easy to get a hygrometer to measure humidity with a guaranteed accuracy range?

Can anyone recommend a hygrometer where the manufacturer guarantees the accuracy to a stated range (maybe 1% or 2%)?

Top
(ads 568) Hailun Pianos

piano accessories music gifts tuning and moving equipment
#101103 - 04/23/08 10:44 AM Re: Accurate hygrometer?
rodmichael Offline
Full Member

Registered: 02/08/08
Posts: 334
Loc: Maryland
I'm not sure it would be useful or necessary to have a home hygrometer of that precision or accuracy. I would postulate that what you're really interested in is a humidification / dehumidification system that can maintain ambient humidity at a relatively constant level throughout the year. It's really the seasonal fluctuations that are responsible for issues associated with soundboard deterioration. You would most likely like to maintain room humidity at a constant level that's within 5% or so of what's personally comfortable, probably 30% or 40% or so.

Just an uneducated thought.
_________________________
Rod Michael
Mason & Hamlin AA, SN 93018
Yamaha CGP-1000, SN UCNZ01010
Zoom Q3



Top
#101104 - 04/23/08 10:51 AM Re: Accurate hygrometer?
masaki Offline
Full Member

Registered: 09/16/02
Posts: 374
Loc: Tokyo, Japan
David-G,
See this web site. I would recommend sling psychrometers.

http://asd-www.larc.nasa.gov/SCOOL/psychrometer.html

Masaki

Top
#101105 - 04/23/08 10:57 AM Re: Accurate hygrometer?
Zormpas Offline
500 Post Club Member

Registered: 07/06/05
Posts: 616
Loc: Monterey, Ca
 Quote:
Originally posted by David-G:
Is it easy to get a hygrometer to measure humidity with a guaranteed accuracy range?

Can anyone recommend a hygrometer where the manufacturer guarantees the accuracy to a stated range (maybe 1% or 2%)? [/b]
Sure. They're *VERY* expensive, need constant calibration, and break frequently.
_________________________
-Zorba
"The Veiled Male"
http://www.doubleveil.net
1918 Hobart M. Cable "H"
"No-one would knowingly provide Franz Liszt with a mediocre piano." -E. M. Good

Top
#101106 - 04/23/08 11:07 AM Re: Accurate hygrometer?
LisztAddict Offline
2000 Post Club Member

Registered: 12/12/05
Posts: 2895
Loc: Florida

Top
#101107 - 04/23/08 12:26 PM Re: Accurate hygrometer?
barganax Offline
Full Member

Registered: 11/11/04
Posts: 200
Loc: Oakland/Santa Fe
I use Onset data loggers and software (called HOBOware) to record RH and temperature and plot the data on my computer. I have 3 units purchased over the course of a couple of years. The last time I checked placing them side by side on my piano, the spread in RH was about 1.5% . They are quite sensitive, when I have them connected to my laptop and just breath normally on them I can see the reading change.

Here is the link

I think it's important to have a reliable hygrometer, though as previously mentioned extreme accuracy is not necessary. But, based on my experience, the built-in hygrometers in some humidifiers are not reliable enough, they are affected by the placement of the humidifier in the room, and you can't place them where you really want to on or near the piano. That's why I like have separate data loggers.

Top
#101108 - 04/23/08 02:09 PM Re: Accurate hygrometer?
Tom Tuner Offline
Full Member

Registered: 11/08/06
Posts: 246
Loc: Bainbridge, OH
Although some have scoffed, I have found the hygrometer-thermometer formerly sold by Radio Shack to be very satisfactory. When checked against other instruments, such as the very expensive one used by the plant engineer at the music conservatory, they have always been in good agreement. This model has been sold under other brand names. Sling psychrometers are expensive and somewhat fragile.

Top
#101109 - 04/23/08 02:11 PM Re: Accurate hygrometer?
Genaa Offline
Full Member

Registered: 04/05/08
Posts: 326
Loc: Winchester, UK
daft as it sounds try your local cigar merchant as well. Cigars require precise humidity levels to be kept at their best and you can pick up a digital hygrometer with thermometer very cheaply - western digital certainly make one for about £20 i believe.
_________________________
Sauter Masterclass 130
----------------------
Currently working on:
Bach: French Suite no. 4
Beethoven: Op 10 no 1
Schubert: Op 90 no 3
Debussy: La Cathedrale Engloutie, Golliwog's Cakewalk, 'Clear the Room'
Balakirev / Glinka: The Lark

Top
#101110 - 04/23/08 02:54 PM Re: Accurate hygrometer?
ALBERTO MENDEZ BLACKALLER Offline
Junior Member

Registered: 03/05/08
Posts: 7
Loc: MONCLOVA, COAHUILA, MEXICO
thermometer-hygrometer by TFA 30.5002 about 29.00 euros, by LUFFT DTH 200 about 140.00 euros
_________________________
betoseyo

Top
#101111 - 04/23/08 02:55 PM Re: Accurate hygrometer?
Genaa Offline
Full Member

Registered: 04/05/08
Posts: 326
Loc: Winchester, UK
alternatively purchase a Sauter M line piano with built in hygrometer hehe ?
_________________________
Sauter Masterclass 130
----------------------
Currently working on:
Bach: French Suite no. 4
Beethoven: Op 10 no 1
Schubert: Op 90 no 3
Debussy: La Cathedrale Engloutie, Golliwog's Cakewalk, 'Clear the Room'
Balakirev / Glinka: The Lark

Top
#101112 - 04/23/08 10:17 PM Re: Accurate hygrometer?
Digitus Offline
500 Post Club Member

Registered: 11/08/06
Posts: 866
Loc: Singapore
There are also the MicroLog and MicroLog Pro dataloggers from Fourier Systems (www.fouriersystems.com). You can use these with a wireless cradle that allows you to collect data and manage the sensor units from a PC. (Sadly, there is no software for the Mac.)

Veriteq also makes a very good temp/RH data logger, which can be paired with a Digi Wifi mini-transmitter. This combo is the best, but very expensive.

RH sensors have to be calibrated regularly, typically once a year.

Edit: Onset's HOBO series of data loggers also has an Ethernet connectivity solution, but not wireless.

Top
#101113 - 04/24/08 01:06 PM Re: Accurate hygrometer?
RDD Offline
Junior Member

Registered: 03/04/08
Posts: 10
You can easily calibrate your hygrometer with table salt and water. Add water to salt in a cup to make a slurry, like wet sand. Put the cup in a sealed bag with your hygrometer for 8 -12 hours. The salt will maintain 75% relative humidity. When you read your hygrometer, you'll know how far off it is. All further readings can be adjusted by this value.

Top
#101114 - 04/24/08 01:26 PM Re: Accurate hygrometer?
David-G Online   content
1000 Post Club Member

Registered: 01/17/06
Posts: 1228
Loc: London
Many thanks to you all for your various suggestions, it will take me a little time to absorb all this information! If anyone else has any thoughts, please do post them.

Thanks again.

Top

Moderator:  Ken Knapp, Piano World, Rickster 
What's Hot!!
HOW TO POST PICTURES on the Piano Forums
-------------------
Sharing is Caring!
About the Buttons
-------------------
Forums Rules & Help
-------------------
ADVERTISE
on Piano World

The world's most popular piano web site.
-------------------
PIANO BOOKS
Interesting books about the piano, pianists, piano history, biographies, memoirs and more!
(125ad) Dampp Chaser
Dampp Chaser Piano Life Saver
Sheet Music
(PW is an affiliate)
Sheet Music Plus Featured Sale
Download & Print Sheet Music Instantly
sheet music search
sheet music search

sheet music search
(ad) HAILUN Pianos
Hailun Pianos - Click for More
(ad) Lindeblad Piano
Lindeblad Piano Restoration
Who's Online
155 registered (alfredo capurso, Almaviva, accordeur, Akshay, 46 invisible), 1547 Guests and 38 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
74264 Members
42 Forums
153614 Topics
2251398 Posts

Max Online: 15252 @ 03/21/10 11:39 PM
New Topics - Multiple Forums
DEBUSSY-"Serenade for the Doll" from 'Children's Corner'
by Hal Freedman
04/20/14 07:14 PM
Worth buying a new digital piano as a controller?
by slickvguy
04/20/14 05:49 PM
Video clip for classical music?
by Nikolas
04/20/14 05:43 PM
Home speakers for RD700NX: need help!
by PoleStar
04/20/14 05:32 PM
stuff fell through the Kawai K8 fallboard, into the piano
by akita
04/20/14 03:12 PM
(ads by Google)

Visit our online store for gifts for music lovers

 
Our Piano Related Classified Ads
| Dealers | Tuners | Lessons | Movers | Restorations | Pianos For Sale | Sell Your Piano |

Advertise on Piano World
| Subscribe | Piano World | PianoSupplies.com | Advertise on Piano World | Donate | Link to Us | Classifieds |
| |Contact | Privacy | Legal | About Us | Site Map | Free Newsletter | Press Room |


copyright 1997 - 2014 Piano World ® all rights reserved
No part of this site may be reproduced without prior written permission