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Does the THUM require calibration?
The manufacturer of the
Temperature/RH sensor used in the THUM states that calibration is done at the factory
and re-calibration is not needed. However if you need a traceable
calibration certificate you can obtain one from an independent
calibration lab like the one listed here.
Calibration Information from the sensor's manufacturer:
"Each sensor is
individually calibrated in a precision humidity chamber with a chilled
mirror hygrometer as reference. The calibration coefficients are
programmed into the OTP(one time programmable) memory. These
coefficients are used internally during measurements to calibrate the
signals from the sensors. The sensor comes in a high-quality pin-type
packaging (for 1.27mm sockets). Owing to full calibration and digital
2-wire output (CMOSens technology), the sensor is fully interchangeable.
In this way, you are spared the elaborate and cost-intensive
recalibration in case of a humidity sensor replacement!"
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Yes, see
THUM Service page for more information.
If you are running the non-service version 1.0.xx, The
installation program for the current version does put a shortcut in the
All User's Startup folder. This should allow the THUM program
to start automatically when a user logs in. If security is an issue on
the computer where the THUM is installed, we suggest using the "Lock"
feature of Windows 2000 and XP. This makes the computer
inaccessible without entering a password, but still allows a user to
stay logged in and keep the THUM program running. To "Lock" a
computer, hold down the Windows key and press L
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You can NOT have more than
1 THUM plugged into a single computer. This is because of the way USB devices
are addressed. You can have an unlimited number of THUMs on a
network as long as each one is plugged into a different computer.
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The included data conversion
program allows the THUM data to be
exported to a csv(comma separated),
dBase III, dBase IV, HTML, Excel, or another Access file. It also
allows SQL queries during the export in order to export a portion of the
data, such as a date range.
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It can NOT call a cell
phone or pager directly. If there is demand for this feature we
may add it to a future release.
However, if your cell phone or pager can
receive SMS messages via e-mail, then you can set the e-mail address in
Options/E-mail Settings to
be the address of your phone/pager.
The Alpha (SMTP/Email)
pagers provide you with the ability to send textual (and meaningful)
messages to pagers and cell phones during the alert cycle using standard
SMTP email functionality.
Before configuring Alpha
(EMAIL) pager alerts, you will need to get the following information
from your paging service.
1. Email Address Format.
Make sure that the email address that you use is in the correct format
to be accepted by your paging service. Some have used address book
entries that were actually converted by their email clients...
obviously, THUM does not know about your address book entries and will
not be able to convert "Bob's Pager" to a valid email address. A
list of e-mail to SMS gateways can be found
here.
2. Verify Delivery Restrictions
Make sure that your paging service will accept messages from either your
SMTP relay host (mail server) or from the machine on which THUM is
running. Also verify that the "FROM" address is valid as some systems
may restrict delivery from a known set of addresses.
3. Confirm Message Structure
While highly unlikely, some message servers may strip the subject line
or require special headers within a message. In any case, make sure that
you know what your paging service accepts and what they will deny.
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What is the maximum distance the THUM can be from the computer?
The cable included is 6'
long. The USB specifications say the maximum cable length should not
exceeded 16'.
If you need a longer distance you could use one of the following
products:
Belkin USB Active Extension Cable $24.00
With these cables a USB device can go beyond the 16' cable limitation.
With the Belkin USB Active Extension Cable, you can connect up to four
of these cables in a series along with a device cable for a total
operating distance of up to 80 feet. http://www.cdw.com/shop/products/default.aspx?EDC=570691
USB Cat 5 Line Extender $89.00
Extend your USB peripherals up to 150 foot using regular CAT5/5e/6 RJ45
cable. This repeater cable has built-in buffer & actively regenerates
the signals to preserve data integrity. http://www.trianglecables.com/171632.html
Digi AnywhereUSB $240
allows USB devices to communicate as an Ethernet device http://www.cdw.com/shop/products/default.aspx?EDC=388669
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Will the THUM run an external application when an alarm limit is reached?
Yes, you can set a program
to be run when an alarm limit is reached. The path and program can
be entered in the Options/Alarm Settings tab. This can be handy if
you need to perform a special task such as shutdown a server or send
some other type of notification.
Note: The THUM
program will attempt to start your external program but, your
program must control closing itself. If it doesn't exit on its own
you could end up with multiple copies of your application running if
multiple alarms occur.
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Can I change the layout of
the html page generated by the THUM?
Yes, you can modify
the html in the following template
C:\Program Files\THUM\template\template.htm
You can change this file to contain any html or other text you desire.
Any place that you want the THUM to enter its dynamic information into
the temprh.htm file, enter one of the command
words listed below. You can use the included template.htm as a guide.
Note: The commands must have the start and stop # symbols and be
in upper case.
Commands
#ALARMCHECK# -- Add this command to the top of the file. If this
command is present the THUM will change the font color of #TEMP# or #RH#
if they exceed the current alarm limits.
#MONITORNAME# -- Monitor name entered in the THUM Settings
#DATETIME# -- Date and Time of the last reading
#TEMP# -- Last temperature reading
#UNIT# -- Displays either a F or a C depending on the unit
selected in the THUM Settings
#RH# -- Last RH reading
#DP# -- Last Dew Point reading
#TEMPALARMHIGH# -- Displays the high alarm setting
#TEMPALARMLOW# -- Displays the low alarm setting
#RHALARMHIGH# -- Displays the high RH setting
#RHALARMLOW# -- Displays the low RH setting
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Can I change the layout of the e-mails sent by the THUM?
Yes, you can modify the
text in the following templates
C:\Program Files\THUM\template\AlarmEmail.txt
C:\Program Files\THUM\template\OKemail.txt
You can change these
files to contain any text you desire. Any time you want the THUM
to enter its dynamic information when the e-mail is generated, enter
one of the command words listed below. You can use the included alarmemail.txt and okemail.txt as
guides.
Note: The commands must have the start and stop # symbols and be
in upper case.
Commands
#FAILTYPE# -- States whether the last reading failed for
temperature or RH. If both
temperature and RH fail, it will state a temperature failure.
#MONITORNAME# -- Monitor name entered in the THUM Settings
#DATETIME# -- Date and Time of the last reading
#TEMP# -- Last temperature reading
#UNIT# -- Displays either a F or a C depending on the unit
selected in the THUM Settings
#RH# -- Last RH reading
#DP# -- Last Dew Point reading
#TEMPALARMHIGH# -- Displays the high alarm setting
#TEMPALARMLOW# -- Displays the low alarm setting
#RHALARMHIGH# -- Displays the high RH setting
#RHALARMLOW# -- Displays the low RH setting
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What does the green light on the THUM mean?
If the green light is on
steady - it means the THUM is plugged in to a USB port and the Windows
driver for the device has loaded properly. If the green light flashes,
the THUM is sending temperature or humidity data to the computer.
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Why is MDAC 2.8 RTM and Jet 4 SP7 included in the THUM installation program?
The THUM uses Microsoft
MDAC/ADO/JET components to save data to an Access table. The Data
Conversion Utility also uses ADO/Jet. We have found that many software
installs attempt to install different versions of MDAC. This can lead to
mismatched dll files, which may cause the THUM not to function properly.
In an attempt to make the THUM installation as easy as possible, we have
included the newest versions of MDAC and Jet in the install. This
should update any mismatched files and allow all MDAC/Jet dependent
applications to run correctly.
If for some reason, you do
not want to update the MDAC/Jet versions on your computer, e-mail
support@practsol.com and we
can send you an install without MDAC and Jet updates.
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Yes, in the Target box of the shortcut add -min to the end.
Example:
"C:\Program
Files\THUM\Thum.exe" -min
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Yes. The THUM OCX,
THUM DLL, Mac Library, or Linux library will allow you to write your own
program to read temperature, RH, and dew point from a THUM.
You could also create a program to read the temprh file and parse the readings. Click here for
more information.
Click here
for more information on the OCX.
Click here
for more information on the DLL.
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Temprh - This file contains a simple ASCII string of HTML-free
pipe-delimited data values of the last reading. It can be used by other
programs to test or import the data. This URL is handy for those wishing
to write their own software interface, to simply and quickly obtain the
temperatures, and incorporate them into their existing Network
Management Software. If the html files are being served by a web server
you can access the file by a command similar to
the following:
http://webserver.com/temprh
The following is an example of what would be returned:
Monitor1|3/20/2004 10:44:46 PM|77.360|29.20|42.83|False
Fields returned are:
MonitorName|Date-Time of last reading|Last Temp reading|Last RH
reading|Last Dew Point reading|Alarm status.
Config - This file
contains a simple ASCII string of HTML-free pipe-delimited values of the
current configuration information such as monitor name and alarm
settings. If the html files are being served by a web server you can
access the file by a command similar to the following:
http://webserver.com/config
The following is an example of what would be returned:
1|Monitor1|F|HighTempAlarm|85|LowTempAlarm|
70|HighRHAlarm|70|LowRhAlarm|10
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