USED, Peltier Effect cooling assembly with TEC module, Heatsink, fan & 2 thermocouples. Contains a 127 pair module mounted to a hot side heatsink assembly with a Mini fan, a cold side aluminum transfer bar with the thermocouples.
TEC Module: similar to a TEC1-12703
Volts: 12V Nominal /16V max,
Amps: ~3.3A @ 12VDC.
Qc: ~36Watts @ DT=0deg. Ta=25deg "C"
Fan: 40mm sq.
Volts:12VDC @ .15A
Noise: ~33db noise.
Thermocouples: 2 epoxied into top of Cold Bar
~ 10K ohm @ 25 "C" L: 2-3/4" OA W: 2-1/4" OA H: 3" WT: .6
WARNING: This product can expose you to chemicals including Chromium which is known to the State of California to cause cancer and which is known to the State of California to cause birth defects and/or other reproductive harm. For more information, go to www.P65Warnings.ca.gov
Click to see Why is this here?
As of August 2018 the State of California has changed the requirements of the “Prop 65” law. We now must list on our website any possible chemicals the can cause cancer, birth defects or reproductive problem.
As an example:
ABS plastic contains styrene
PVC wire insulation can contain Di(2-ethylhexyl)phthalate (DEHP)
electrolytic capacitors can contain Ethylene glycol
Brass can contain Lead
flame retardant pc boards can contain Tetrabromobisphenol A (TBBPA)
Aluminum alloys can contain Chromium
To put it simply we are a small company and do not have the resources to test every single part, so we list every thing as hazardous. Please recycle all electronic parts responsibly and under no circumstance eat, drink or smoke these parts and wash your hands after touching!
This Peltier cooling assembly gets 5-stars since MPJ now includes a connector diagram. The Peltier assembly works very well. Data from initial 5-minute run follows. With a 67 degrees Fahrenheit F ambient temperature, the thermal transfer bar cold finger temperature dropped to 23 degrees F. The cold finger was insulated with packing foam and I attached an external K-type thermocouple to it with tape. Electrical data: potential was 12.0 to 12.4VDC from a regulated power supply. Maximum current ranged from 3.08 to 3.11 amperes A. The resistance of the thermistors embedded in the cold finger was ~12k-ohms at 67F. At 23 degrees, the resistance had increased to ~47.2k-ohms. The temperature difference dT was then 44F. I kept the cooler running for a few more minutes; the cold finger temperature dropped to 20F. That value appeared to be the maximum temperature drop under these conditions.
- TIM Bald Engineer Guy, VA
Temperature sensors are themistors not thermocouples
Works great. The two temperature sensors are 10K ohm thermistors not thermocouples. Resistance goes up as temperature decreases. Three minute operation at 2.9 Amps- the thermistor went from 9.3K ohms to 22.5K ohms.
- Bob, NC
Great with a wiring diagram
Threaten to return item because of no wiring diagram tadah! They sent a wiring diagram not complete but at least this works! They did not say what the Yellow and Green wire pairs were for.
it is 70° in my room and the device is sweating profusely I do not have thermometer to check temp.
I wonder if I could make a water cooler I would gang them up as I need to cool a CO2 laser.
It draws 2.82 amps so needs a solid power supply.
The air from fan feels only slightly above ambient.
I would give 5 stars if I knew what the yellow and green wires were for.
- Ralph Hulslander, NY
Need a wiring diagram!
Ill have to take it apart to see where the wires go.
I assume the 2 red and black power the fan.
But what are the green and yellow pairs for and with the red and black what is the white for?