Some questions about block erupter usb

[NR3000]

1. It is possible check temperature using cgminer or any software? And if yes, how? Ar I need external thermometer?
2. What heatsink you recommend? And how to fitted it?
3. What cooler you recommend?
 Most important question is number 1.
 Thank You very much!

[tempestb]

It has a flat heatsink connected to it already.  Some people have fans that blow on theirs.  I don't, and they work fine.  They DO get really hot, but it doesn't impact their function.  I imagine Asicminer would have put a better heatsink on them if they thought they would just burn out if people didn't put fans on them.

I've been running them for a couple weeks or more now, 24 hours a day without any issues.  But getting a small fan to blow air on them isn't a bad idea.  It's all you really need.

[Photon939]

Block Erupter USBs do not have a temperature sensor, but I would recommend active cooling to keep the chips happy. The stock aluminum plate is enough if you have airflow going over it to keep it relatively cool.

[farproc]

More than a week without a fan. No problem.

[Photon939]

More than a week without a fan. No problem.

GPUs can run at 95C all day long too, doesn't mean it's a good idea 

[PeZ]

If you point an Arctic breeze mobile USB fan at it, it will reduce your hardware error rate slightly and perhaps increase its lifespan.

[LogicalUnit]

I had stability issues when running USB eruptors without a fan: hashrate in cgminer started to drop after a few days. The arctic breeze usb fan is perfect for cooling the block eruptors, and it does lower HW error rate by about 0.2%

[spoid]

what is the cheapest thermometer-tool you can buy to somewhat reliably measure their chip temperatures?

[Bitcoinorama]

what is the cheapest thermometer-tool you can buy to somewhat reliably measure their chip temperatures?

The one you buy on eBay...

[titomane]

what is the cheapest thermometer-tool you can buy to somewhat reliably measure their chip temperatures?

Isnt cheapest but is cool  

http://www.ebay.com/itm/Non-Contact-IR-Infrared-Digital-Gun-Thermometer-Temperature-Laser-/111099396648?pt=LH_DefaultDomain_0&hash=item19de0a4228   8$
http://www.ebay.com/itm/Etekcity-Non-Contact-Digital-Infrared-IR-Thermometer-Temperature-Laser-Gun-USA-/350817439133?pt=LH_DefaultDomain_0&hash=item51ae594d9d        16$
http://www.amazon.com/Temperature-Infrared-Thermometer-Laser-Sight/dp/B002YE3FS4  22$

[innovation]

thermometer is not necessary.
I blow air to usb block erupter with a 14 cm fan.
It is enough to cool the usb miner to about 40 degrees centigrade.