[CAUT] Dickson temp/RH data loggers...

[Hans E Sander]

It is a wonderful effective tool. The graphs with temparature and humidity curves are the only way to prove about humidity fluctuations. The heat and aircondition people don't worry much about humidity. They normally know more about both but don't let us know. You can graph both by minute, hour, day, month. I used one logger in each recital hall. I glued velcro on the back and hung it above normal reach. You need to get it off once a month to feed the data into your computer and reset the unit. They seem to be a little pricey. Around $240.00 a piece. So far no need to recalibrate. 
I collected data for several years at the UofL School of Music to fight the battle. After 10 years, nearly unsuccessful on that front I retired 6 months ago. If you read the collected data over the years you might get tears in your eyes and you understand why you have piano problems.
Greetings
Hans Sander, RPT
Retired from the University but still cooking. 

>>> "Porritt, David" <dporritt at mail.smu.edu> 04/26/07 7:32 AM >>>
Alan:

Check out the USB-502 from Measurement computing.  
http://www.measurementcomputing.com/cbicatalog/USB-502.asp?dept_id=414&p
f_id=1759&mscssid=3XMU8L0UW6QK8G0S956LLJ77ETWT8VQ3

I've had one here for a year or so and it works very well and is
certainly well priced.

dp

David M. Porritt
dporritt at smu.edu

-----Original Message-----
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of
Alan Crane
Sent: Wednesday, April 25, 2007 5:48 PM
To: College and University Technicians
Subject: [CAUT] Dickson temp/RH data loggers...

I'd like to hear from any techs who have, and use, Dickson RH/temp 
data loggers.
There was limited discussion of these units some months ago but I'm 
hoping for more information.

I'm going to buy one to use here at WSU but am having a hard time 
deciding exactly which one to order.

I'd be interested to know what models are in use out there and what 
those of you who have them like and dislike about them.
Please indicate too if your use is institutional or among private
clientele.

Does anyone have any warranty/service experience with Dickson on these
units?
(It looks like battery replacement on some models must be done by the 
manufacturer).

Also, do any of you have & use (or wish you had) the calibration
software?
Its another $250 and I don't want to spend the bucks on it if its not 
necessary.

Any information based on personal experience would be very helpful 
________ thanks!
(If you don't have/use a data logger, please don't clutter up the 
list offering your ideas & suggestions).





Regards,

Alan B. Crane,  RPT
School of Music
Wichita State University
alan.crane at wichita.edu