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<DIV><SPAN class=517045601-14012006><FONT face=Arial color=#0000ff size=2>HAI
temperature and humidity sensors are frequency modulated. The formula is f =
(temp(degF)*4)/30.</FONT></SPAN></DIV>
<DIV><SPAN class=517045601-14012006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=517045601-14012006><FONT face=Arial color=#0000ff size=2>I once
played with microcontroller to drive the circuit and it confirms the
relationship. It is very stable as long as the frequency stable. I think the
instability in the setup is due to the sensor itself, not the wire
length.</FONT></SPAN></DIV>
<DIV><SPAN class=517045601-14012006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=517045601-14012006><FONT face=Arial color=#0000ff
size=2>Rgds,</FONT></SPAN></DIV>
<DIV><SPAN class=517045601-14012006><FONT face=Arial color=#0000ff size=2>W.
Utomo</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-----Original Message-----<BR><B>From:</B>
hai-users-bounces@tssi.com [mailto:hai-users-bounces@tssi.com] <B>On Behalf Of
</B>Brad<BR><B>Sent:</B> Saturday, January 14, 2006 8:46 AM<BR><B>To:</B> 'Ken
Schumm'<BR><B>Cc:</B> hai-users@tssi.com<BR><B>Subject:</B> RE: [Hai-users]
Temp sensors accuracy again.<BR><BR></FONT></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">Thanks for the replies Ken. Your
explanation makes lots of sense. Hadn’t thought of the wire length
issue.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">I’m comparing the readings to a $300
Kestrel 4100 Pocket HVAC tool.<BR>Its temp specs are +/- 1.8
degrees.<BR>Humidity specs are +/- 3%<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">I also have 3 of the Radio Shack gauges,
and those and the Kestrel agrees with each other within a few tenths of each
other on temp and Humidity.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<DIV class=MsoNormal style="MARGIN: 0in 0in 0pt; TEXT-ALIGN: center"
align=center><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=3>
</SPAN></FONT></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><B><FONT face=Tahoma
size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">
hai-users-bounces@tssi.com [mailto:hai-users-bounces@tssi.com] <B><SPAN
style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Ken Schumm<BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Friday, January 13, 2006 4:59
PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Brad<BR><B><SPAN
style="FONT-WEIGHT: bold">Cc:</SPAN></B> hai-users@tssi.com<BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [Hai-users] Temp sensors
accuracy again.</SPAN></FONT><o:p></o:p></P></DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt">Just curious, if your humidity readings
are off what are you comparing them to? I believe the Radio Shack humidity
sensor is accurate to +/- 5 %. If the HAI is also +/- 5% the difference
between the two could be 10% and they'd be within
specs.<o:p></o:p></SPAN></FONT></P></DIV>
<BLOCKQUOTE
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<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">----- Original Message -----
<o:p></o:p></SPAN></FONT></P></DIV>
<DIV style="font-color: black">
<P class=MsoNormal style="BACKGROUND: #e4e4e4; MARGIN: 0in 0in 0pt"><B><FONT
face=Arial size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">From:</SPAN></FONT></B><FONT
face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> <A
title=looney2ns@sigecom.net href="mailto:looney2ns@sigecom.net">Brad</A>
<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><B><FONT face=Arial
size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">To:</SPAN></FONT></B><FONT
face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> <A
title=Guy.Wenzel@capella.edu href="mailto:Guy.Wenzel@capella.edu">'Wenzel,
Guy'</A> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><B><FONT face=Arial
size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Cc:</SPAN></FONT></B><FONT
face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> <A
title=hai-users@tssi.com
href="mailto:hai-users@tssi.com">hai-users@tssi.com</A>
<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><B><FONT face=Arial
size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Sent:</SPAN></FONT></B><FONT
face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Friday,
January 13, 2006 2:00 PM<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><B><FONT face=Arial
size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Subject:</SPAN></FONT></B><FONT
face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> RE:
[Hai-users] Temp sensors accuracy again.<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Times New Roman"
size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P></DIV>
<P class=MsoNormal><FONT face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">In my case, the thermostats readings
are very accurate; it is the Temp.Humid sensor’s that are
off.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">The new temp/humid sensors can not be
calibrated. The Thermostats can be if needed.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<DIV class=MsoNormal style="MARGIN: 0in 0in 0pt; TEXT-ALIGN: center"
align=center><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=3>
</SPAN></FONT></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><B><FONT face=Tahoma
size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">
Wenzel, Guy [mailto:Guy.Wenzel@capella.edu] <BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Friday, January 13, 2006 12:40
PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Brad<BR><B><SPAN
style="FONT-WEIGHT: bold">Cc:</SPAN></B> <A
href="mailto:hai-users@tssi.com">hai-users@tssi.com</A><BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B> RE: [Hai-users] Temp sensors
accuracy again.</SPAN></FONT><o:p></o:p></P></DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Comic Sans MS"
size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: 'Comic Sans MS'">I have a
similar setup with an Omnistat and a Temp sensor in the hallway
near the same room and see the same 3 - 5 degree difference. I
have not cheeked to see which is more correct. Does anyone else know
if it can be adjusted or just the thermostat?</SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV class=MsoNormal style="MARGIN: 0in 0in 0pt; TEXT-ALIGN: center"
align=center><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=3>
</SPAN></FONT></DIV>
<P class=MsoNormal
style="MARGIN-BOTTOM: 12pt; MARGIN-LEFT: 0in; MARGIN-RIGHT: 0in; mso-margin-top-alt: 0in"><B><FONT
face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">
hai-users-bounces@tssi.com [mailto:hai-users-bounces@tssi.com] <B><SPAN
style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Brad<BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Friday, January 13, 2006 12:19
PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B>
hai-users@tssi.com<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B>
[Hai-users] Temp sensors accuracy again.</SPAN></FONT><o:p></o:p></P>
<P><FONT face="Comic Sans MS" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'"> Just
installed 3 HAI temp/humidity sensors. Also installed 3 HAI OmniStats with
remote temp sensors. The Thermostat remote sensors and the Temp/Humidity
sensors are mounted on inside walls within 6 inches of each other, each set
in a different room. Temp/Humidity sensors show temps being 3-5 degrees
higher than the thermostats show.<o:p></o:p></SPAN></FONT></P>
<P><FONT face="Comic Sans MS" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'">Apparently
HAI STILL has not resolved the issue of the Temp/Humid sensor’s being
inaccurate.<o:p></o:p></SPAN></FONT></P>
<P><FONT face="Comic Sans MS" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'">The
Humidity is reading low on them as well. Very
frustrating.<o:p></o:p></SPAN></FONT></P>
<P><FONT face="Comic Sans MS" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'">Anyone
else seeing this?<o:p></o:p></SPAN></FONT></P>
<DIV class=MsoNormal style="MARGIN: 0in 0in 0pt; TEXT-ALIGN: center"
align=center><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt">
<HR align=center width="100%" SIZE=3>
</SPAN></FONT></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Times New Roman"
size=3><SPAN
style="FONT-SIZE: 12pt">_______________________________________________<BR>HAI-users
mailing
list<BR>HAI-users@tssi.com<BR>http://romaine.tssi.com/mailman/listinfo/hai-users<o:p></o:p></SPAN></FONT></P></BLOCKQUOTE></DIV></BLOCKQUOTE></BODY></HTML>