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Peltier Heat Pump
High tech comes to Am Sci & Surp!! It is here in the form of a Peltier junction, a thermo-electric device that translates electric power into heat, and perversely, into cool. Apply current @ 3-12 VDC to the gizmo and it extracts thermal energy from one face, thereby cooling it. The heat is dumped onto the other face, thereby heating it. Please note: you must use a heat sink on the hot side or the junction will fry itself, since it can quickly create a 65° C temperature differential in a no load situation. Stack two, or build a cascade to increase the thermal differential created. Or run it backwards. Apply heat or cold to the relevant face and produce a current. Amazing for science projects and experiments. Practical for coffee warmers, beer coolers and mini-refrigerator or warming oven applications. Comes with instructions. Large is 1-9/16" sq. x 3/16" thick.
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89143 LARGER PELTIER JUNCTION |
Wrap Around Heating Element
Resistive element insulated and wrapped in soft, flexible (fiberglass) jacket. The wrapped section is about 27 inches long and about 3/16" in diameter. Each end has a 4 inch insulated lead, but one end is a single strand solid wire and the other is a seven strand braid. We haven't any idea where the marriage takes place! Anyway, they're rated at 90 watts. Plug 'em into 110 VAC and the thing heats up to the point that it's quite hot to the touch - too hot to hold onto. Wrap it around whatever it is that you need to keep warm and make your own heating systems. Make yourself a coil and you can probably keep your coffee pot hot. Or operate it at 12 volts as a telescope dew chaser. You'll notice some smoke when you plug it in the first time, but this won't happen once it's burned in. Happy heating by Hot Watt. Melanie, Tory, and Donna all want one!
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1490 HEATING ROPE |
Thermocouple Probes
We have the perfect thermocouple probes to probe your every temperature! Surface, moving surface, air, insertion and general purpose probes, with appropriate temperature ranges, are durable, well-made tools that are built to last. The 9000 series probes are compatible with any meter that accepts a mini-connector plug, so you can use your favorite. The actual probes range from 4" to 7", except the Moving Surface Bow with Replacement Element, which has an 11" wand. They all have 5" comfort-grip handles. See the table below for the probe type, description, cable length and Fahrenheit temperature range of the tip. The Item number includes the manufacturer's model number. All are made by Alnor.
| Type | Description | ||||
|---|---|---|---|---|---|
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28644 PROBE, 9230 | J | Surface Probe | Details | |
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28645 PROBE, 9250 | J | Insertion Needle | Details | |
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28647 PROBE, 9280 | J | Reduced Tip | Details | |
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28648 PROBE, 9290 | J | Surface Bow | Details | |
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28656 PROBE, 9390 | K | Surface Bow | Details | |
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28659 PROBE, 9440 | T | Angle Surface | Details | |
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28649 PROBE, 9710 | J | General Purpose | Details |
Chill
Be cool. Trust us to send you a very assorted assortment of aluminum heat sinks. There will be (3), they will all be takeouts from computer motherboards, and they'll (probably) range from 1-3/4" square to 4" x 2-1/2", from 3/8" to 1" high, and be gold, silver, black, turquoise.... You get the idea.
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19768 ASST HEAT SINKS |
Thermal Sensor
Heat switch that is normally open below 135° F and closes at higher temperature. Imagination is the limit here. We don't have formal electrical ratings but believe it can handle about 2 Amps @ 120 VAC. It can be used (perhaps with a relay) to trigger a fire alarm when mounted near a furnace, in a garage, or in an attic. How about using it to shut off electronics or motors when overheating occurs? Or to activate a fan for cooling? Use it to record how long the furnace is on to rate its efficiency. 5/8" dia x 3/8" sensor head with (2) 1/4" x 1-5/8" long fixed leads.
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25813 HEAT SWITCH, 135DEG F |
Hot Hot!!
This flash heating element out of a coffee maker really heats in a hurry!! It is designed only for use with a regulating heat switch and will melt itself in less than a minute if turned on un regulated with no water or other contents. You can use (2) in series without a switch as solder pots, but because of the extreme fire hazard, we strongly recommend the switch. It draws 8 amps @ 120 VAC max. 2" dia x 2-1/2" tall, OA. It holds about 1 oz. and has (2) spade terminals. A wonderful item when used correctly.
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32451 FLASH HEAT POT |
Heating Element
The heating element from a common household iron. Shaped like the base of an iron, 5-3/4" long x 3-3/8" wide, with an open 3-1/4" x 1"center. The element wire is embedded in ceramic, but is still a real fire hazard and will glow red at max temperature. It runs on 120 VAC and has (3) threaded hook-up terminals: the center is neutral, the two sides draw 200 and 400 watts or use both for 600 watts. Surface temperatures: 1250°F with 600 watts (5 amps), 1000°F with 400 watts (3 amps), and 700°F with 200 watts (1.5 amps). For safety's sake, please use it with a heat switch.
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30783 IRON HEATING ELEMENT |
Wanna Build A Broiler?
You might start with this. Or not. Frankly, we know it's a take-out, we just don't know what it was taken out of. It's got a big pair (7" long, U-shaped) of ceramic heating elements, mounted on a 5-1/2" L-shaped aluminum bracket with (4) heat switches wired in series before and after each element. It says it's rated 113°C at 12VDC. Each element draws approx 6A and the maximum temperature would be approx 600°-700°F. Switches are NC.
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37105 HEATING ELEMENT |
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