[SS2S-Main] Re: Tempilstick

  • From: "Brian Su" <dmarc-noreply@xxxxxxxxxxxxx> (Redacted sender "cycloniterulez@xxxxxxxxx" for DMARC)
  • To: "sugarshot@xxxxxxxxxxxxx" <sugarshot@xxxxxxxxxxxxx>
  • Date: Tue, 25 Nov 2014 20:50:09 +0000 (UTC)

Hi Hans,
This is the one that I have:
Digital IR Infrared Temperature Gun Thermometer Laser Point Non-Contact GM900 UK

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| Digital IR Infrared Temperature Gun Thermometer Laser...Digital IR Infrared 
Temperature Gun Thermometer Laser Point Non-Contact GM900 UK in Business, 
Office & Industrial, Electrical & Test Equipment, Test & Measu... |
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| View on www.ebay.co.uk | Preview by Yahoo |
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I can't vouch for its accuracy. It's cheap and take emissivity settings, 
however it has no data output connection. It's ok for simple home DIY, but 
until I'm proven wrong I would discourage non branded ones like this for 
professional use.
Brian. 

     On Tuesday, 25 November 2014, 20:00, Hans Olaf Toft <hot@xxxxxxxxxxxxx> 
wrote:
   

  Ablation is likely to happen in the 400-600 C range, but the unit should be 
able to measure higher temperatures just in case. Getting the emissivity right 
may require a few experiments (and thermocouples). Warning: the cheap IR 
thermometers may have a fixed emissivity setting.
 Hans
 
 On 11/25/2014 08:34 PM, Brian Su (Redacted sender cycloniterulez@xxxxxxxxx for 
DMARC) wrote:
  
 
From my very limited experience with IR thermometers, they're only accurate 
when correctly compensated for the emissivity of the surface being measured. On 
top of that, the cheap units can't measure above 900 degrees Celsius.   
 
 Kind Regards, 
  Brian Su. 
  
  Sent from my iPhone.  
 On 25 Nov 2014, at 18:26, Vicente Alvero Zambrano 
<vicente_alvero_14@xxxxxxxxxxx> wrote:
 
  
  #yiv7504788967 #yiv7504788967 --.yiv7504788967hmmessage 
P{margin:0px;padding:0px;}#yiv7504788967 
body.yiv7504788967hmmessage{font-size:12pt;font-family:Calibri;}#yiv7504788967  
Exactly. We need a continuously record the temperature. Therefore, the two 
proposed options, the pencil and the thermocouple are not suitable for our 
purpose. We will use several thermocouples within the cone, temperature 
recording. But abroad, will be in direct contact with the flame. That is why, 
we want to use an infrared thermometer. Does anyone know how we can do one and 
connect it to the computer?
 
  Date: Tue, 25 Nov 2014 18:32:57 +0100
 From: hot@xxxxxxxxxxxxx
 To: sugarshot@xxxxxxxxxxxxx
 Subject: [SS2S-Main] Re: Tempilstick
 
 Thermocouples are cheap and work well, but if they are embedded in a sample 
that gets torched, they will at best record the surface temperature of the 
sample at the brief moment they are at the surface. It may work - and even 
provide usefull data - but an IR thermometer will read the surface  temperature 
continuously.
 Hans
 On 11/25/2014 05:34 PM, Brian Su (Redacted sender cycloniterulez@xxxxxxxxx for 
DMARC) wrote:
  
 This one sure looks much better.
 
 Kind Regards, 
  Brian Su. 
  
  Sent from my iPhone.  
 On 25 Nov 2014, at 16:27, Grant Saviers <grants2@xxxxxxxxxxx> wrote:
 
  
  Here is another ebay seller with all thermocouple options, packaging 
variations, temperature compensated junctions, and EMI filtering, etc.  Looks 
to be professional grade engineering:
 
 
http://www.ebay.com/itm/Quad-Channel-K-Type-Thermocouple-Amplifier-Conditioner-Analog-Output-AD8495-/331032888967?pt=LH_DefaultDomain_0&hash=item4d13190687
 
 On 11/25/2014 8:10 AM, Grant Saviers wrote:
  
 A type K thermocouple is good to 1250 C.  It will need a simple 
instrumentation amplifier to get the signal voltage to a range compatible with 
the Arduino A/D converter.  For about $10 in parts you can build your own 
IN-AMP.  There are several choices for single chip IN-AMPs that will do the job 
and here is a board from China for $10, and the chip output is 10mv/deg C.
 
 
http://www.ebay.com/itm/AD597-Ultimaker-Temperature-Control-Board-K-Thermocouple-Signal-Amplifier-/321597894984?pt=LH_DefaultDomain_0&hash=item4ae0ba7148
 
 Grant 
 
 On 11/25/2014 1:12 AM, flint hapirat (Redacted sender flinthapirat@xxxxxxxxx 
for DMARC) wrote:
  
  One comment - The tempilstick temperature pens are rated between 38c-1093c... 
   Hope this is still helpful. 
   
      From: Vicente Alvero Zambrano <vicente_alvero_14@xxxxxxxxxxx>
 To: "sugarshot@xxxxxxxxxxxxx" <sugarshot@xxxxxxxxxxxxx> 
 Sent: Sunday, November 16, 2014 9:10 PM
 Subject: [SS2S-Main] Re: volunteering
   
  #yiv7504788967 #yiv7504788967 --.yiv7504788967ExternalClass 
#yiv7504788967ecxyiv4170881393 body.yiv7504788967ecxyiv4170881393hmmessage 
{font-size:12pt;font-family:Calibri;}#yiv7504788967    Thanks for your reply 
Markus, 
  It is a good idea. The main problem I see is that we need to measure high 
temperatures. I do not know exactly how much, but around 1200ºC. And  this only 
measures halfway. Do you know if there is a sensor for arduino with this 
possibility? 
 
 
    From: m.bindhammer@xxxxxxxxxxx
 To: sugarshot@xxxxxxxxxxxxx
 Subject: [SS2S-Main] Re: volunteering
 Date: Sun, 16 Nov 2014 23:21:22 +0800
 
 #yiv7504788967 #yiv7504788967 --.yiv7504788967ExternalClass 
#yiv7504788967ecxyiv4170881393 .yiv7504788967ecxyiv4170881393ExternalClass 
body.yiv7504788967ecxyiv4170881393ecxhmmessage 
{font-size:12pt;font-family:Calibri;}#yiv7504788967  
 Hi Vicente,
 
 It is quite easy to build a data logger with an Arduino based micro 
controller, SD card, SD card socket, HEF 4050  voltage level shifter, DS1307 
RTC and one (or more) MLX90614 IR thermometer(s) which communicate(s) over the 
I2C bus as well.
 I am just doing this for a medical project.
 
 Markus
 
  From: vicente_alvero_14@xxxxxxxxxxx
 To: sugarshot@xxxxxxxxxxxxx
 Subject: [SS2S-Main] volunteering
 Date: Sat, 15 Nov 2014 19:21:26 +0100
 
 #yiv7504788967 #yiv7504788967 --.yiv7504788967ExternalClass 
#yiv7504788967ecxyiv4170881393 .yiv7504788967ecxyiv4170881393ExternalClass 
body.yiv7504788967ecxyiv4170881393ecxhmmessage 
{font-size:12pt;font-family:Calibri;}#yiv7504788967   Hi all again, Although a 
long time do not talk about it, yet we continue the investigation of ablative 
materials. For the study of the material that will coat the nosecone of our 
rocket; Richard, Mattias and I  already started last summer to work on it. 
  Throughout this week, I've been talking to Hans, and he thought the 
possibility to also measure the  temperature on the side of the wall that is in 
contact with the flame. Would be measured by  an infrared thermometer. 
  I am contacting you to see if anyone is interested, or know how, to attach an 
infrared thermometer  with data logger that Liam is manufacturing for 
thermocouples. 
  By this, we can obtain pairs of temperatures at the same point. Both outside 
and inside of the wall, in  order to obtain among other data, values of thermal 
conductivity and heat capacity of  each material. 
  Thanks in advance for your cooperation and interest.         
 
    
  
 
 
 
  
 
 
    
 
 

   

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