Time to stabile temp for waterproof DS18B20

General project help for Adafruit customers

Moderators: adafruit_support_bill, adafruit

Time to stabile temp for waterproof DS18B20

Postby ccfoo242 » Wed Apr 25, 2012 7:07 am

Hello, I started working with the waterproof DS18B20 sold by adafruit and it takes several minutes for the temperature reading to stabilize. Is this typical? So if I have it stable at, say, 22C and then I immerse in warm water it might take 3-4 minutes to read the proper temp.
ccfoo242
 
Posts: 1
Joined: Thu Apr 19, 2012 3:21 pm

Re: Time to stabile temp for waterproof DS18B20

Postby adafruit_support_bill » Wed Apr 25, 2012 7:38 am

Sensor response time is limited by the thermal mass & resistance of the sensor & shroud. I haven't run any tests on the waterproof sensors yet, but since response time will be roughly proportional to the square of the cross-section, I would expect them to be significantly slower than a bare sensor.
User avatar
adafruit_support_bill
 
Posts: 16620
Joined: Sat Feb 07, 2009 9:11 am


Return to General Project help

Who is online

Users browsing this forum: No registered users and 5 guests

Stuff to buy from the Adafruit store and links to product documentation!


New Products [114]

Raspberry Pi[82]
 
FLORA[24]
 
Bunnie Studios[9]
 
FPGA[1]
 
mbed[12]
Arduino[60]
 
NETduino[14]
 
BeagleBone[23]
 
Android[6]
 
XBee[10]
More Dev Boards[30]


 
BoArduino[8]
 
SpokePOV[4]
 
TV-B-Gone[4]
 
MiniPOV[3]
 
SIM reader[3]
 
Microtouch[5]
 
Clocks & Watches[18]
 
Drawdio[4]
 
Brain Machine[1]
 
Game of Life[2]
 
MintyBoost[2]
More DIY Kits[16]


 
MaKey MaKey[3]
 
Tweet-a-Watt[5]
 
Young Engineers[39]
 
Discover Electronics[2]
 
Snap Circuits[4]
 
littleBits[3]
 
Project packs[9]


 
Breakout Boards[35]
LCDs & Displays[49]
Components & Parts[70]
Batteries & Power[54]
EL Wire/Tape/Panel[52]
LEDs[112]
 
Wireless[16]
Cables[66]
 
Lasers[6]
Sensors/Parts[147]
 
Enclosures/Cases[11]
 
Solar[11]
 
RFID / NFC[13]
Prototyping[70]
 
iDevices[13]
Tools[71]
 
Wearables[41]
 
CNC[37]
 
Robotics[29]
 
3D printing[1]
 
Materials[25]


 
Stickers[41]
 
Skill badges[55]
 
Books[26]
 
Circuit Playground[7]
 
Gift Certificates[4]