Uneven Flexwatt temps (?)

[spyderrobotics]

How big are the fluxuations? I would suspect they would be pretty close (ie within a degree or so). If you want to get technical you could use a digital multimeter and set it for resistance. make sure the heat tape is not plugged into the AC and measure each side of your plug. The lower the resistance the hotter it would get I would suspect. You should be able to see how far off each piece is to the other. I suppose if your building a rack you could take your hotter pieces and put them in your lower levels. Since heat rises usually the lower levels are cooler. (See.. its not a problem. Its a feature!)

Anyone who has seen my posts know I am not a fan of the infrared temp guns. If you want to really test them grab a couple of $5 digital thermometers from walmart that have probes on a wire. Tape the probes together and leave them in the ambient air for 15 minutes. Then check the displays. They will be off from each other normally (maybe even by couple of degrees) just mark down how much their difference is and label the thermometers so you know which is which. The use them to measure your heat tape. This way you can take two readings at the same time and as long as you add in your calibration difference that you wrote down previously you can tell if they are truely running at difference temps and by how much.

Dion Brewington
Owner, Spyder Robotics

[JKExotics]

How big are the fluxuations? I would suspect they would be pretty close (ie within a degree or so). If you want to get technical you could use a digital multimeter and set it for resistance. make sure the heat tape is not plugged into the AC and measure each side of your plug. The lower the resistance the hotter it would get I would suspect. You should be able to see how far off each piece is to the other. I suppose if your building a rack you could take your hotter pieces and put them in your lower levels. Since heat rises usually the lower levels are cooler. (See.. its not a problem. Its a feature!)

Anyone who has seen my posts know I am not a fan of the infrared temp guns. If you want to really test them grab a couple of $5 digital thermometers from walmart that have probes on a wire. Tape the probes together and leave them in the ambient air for 15 minutes. Then check the displays. They will be off from each other normally (maybe even by couple of degrees) just mark down how much their difference is and label the thermometers so you know which is which. The use them to measure your heat tape. This way you can take two readings at the same time and as long as you add in your calibration difference that you wrote down previously you can tell if they are truely running at difference temps and by how much.

Dion Brewington
Owner, Spyder Robotics

Listen to the man, he builds one of the top Thermostats in the industry for a living! On topic: I just use those accurite digital wireless humidity/temp readers. Just stick the sensor inside the tub on the hot spot wait a half hour or so for temps to adjust and boom great reading without the hassle of a temp gun. The tingling could simply be because the cord isn't grounded and generally has no impact on fluctuation.

[mechnut450]

i never reallychecked alonge the temp but I do find there are sometimes a slight warmer spot in some areas. I figure this was a given based on the material that used .. but it neve been more than a degree or 3 in my cases..