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KRÜSS PT31 model Peltier Thermostat Kruess Thermostat Kruss Thermostat to control the temperature of refractometers, polarime

Chambers Temperature Humidity Stability >> KRÜSS PT31 model Peltier Thermostat Kruess Thermostat Kruss Thermostat to control the temperature of refractometers, polarimeters, etc NEW

KRÜSS PT31 model Peltier Thermostat Kruess Thermostat Kruss Thermostat to control the temperature of refractometers, polarimeters, etc NEW

Versatile, High-Performance Peltier Thermostat for the Laboratory

 

"The PT31 model Peltier Thermostat is a flexible, compact and powerful unit used to control the temperature of refractometers, polarimeters, and other similar laboratory devices. The unit is robust and easy to operate and due to its compact size (only 140 x 80 x 210 mm) is ideal for locations where space is at a premium.

 

How does Peltier heating and cooling work?

 

Peltier devices are familiar in many modern applications, but despite their ubiquity and the fact that the Peltier effect has been known for over 170 years, it remains a slightly mysterious and little understood phenomenon.

 

Common sense might indicate that it is possible to raise the temperature of an object by directly applying electricity, but not cool it. After all, adding energy always raises temperature, doesn’t it? In fact, the Peltier effect is a manifestation of the thermoelectric effect that occurs when two different conductors (usually metals) are in contact.

 

A basic thermocouple can be made by twisting together two different wires – say copper and zinc – in a simple circuit. When heat is applied, a small electrical current is generated. The process can also be made to work in the opposite sense, with applied electrical voltage being used to generate heat at the thermocouple. The surprising part of this experiment is that the polarity of the voltage determines whether the heat is ‘positive’ or ‘negative’ – ie, whether the thermocouple is heated or cooled.

 

The scientific explanation is that the applied voltage drives electrons and electron holes (the position where an electron could exist) to shift position, depending on the direction of the current. Driving electrons into lower-energy orbit releases energy which manifests as heat. Driving them into a higher-energy position absorbs energy from the environment, and the thermocouple consequently cools. In practice both things happen simultaneously, with heat effectively being pumped from one side of the thermocoupled circuit to the other.

 

Because the Peltier effect is dependent on the polarity of the driving current, the same solid-state device can both heat and cool. This is useful in many situations inside and outside the laboratory. One thing is worth remembering: the Peltier effect does not contravene the laws of thermodynamics, and regardless of whether local heating or cooling is created, the overall effect is of heat generation. The localised cooling created on one side of the Peltier device is always less than the localised heating on the other." (KRUSS)

 

For additional details regarding this equipment, please visit http://www.kruess.com/laboratory/products/thermostats/  to download the product brochure and data sheet.

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1. EXPERIENCED-We have been building labs, equipping labs, and supplying lab equipment parts and service for over 20 years. With over 100 years of combined lab equipment experience at our site and working with many experienced technicians, we try to offer the right equipment at the right price for you, our partner.

2. SAVE MONEY- We sell, lease, and rent - You save money, 5-70% off original retail, so you get great equipment at a great price.

3. WARRANTY -We offer a warranty on our refurbished equipment and new manufacturer warranty on new equipment.

4. SERVICE- We offer instrument service, refurbishment validations, and calibrations at great rates and skill levels.

5. INSTRUMENT PARTS- We sell new instrument parts and new equipment parts and hard to find used older parts

6. UNIQUE- We are an independent dealer and also sell used instruments, such as AA, FTIR, GC, GC/MS, HPLC, LC/MS, ICP, ICP/MS, Particle Size Analysis, UV/VIS, and UV/VIS/NIR. This equipment is manufactured by companies like Agilent, Hewlett Packard, Waters, Hitachi, Perkin Elmer, Shimadzu, Beckman, and more. WE ARE NOT AFFILIATED WITH THESE COMPANIES IN ANY WAY!

7. BUILD LABS- We well discounted made in USA Lab Casework, Fume hoods, Blowers, Safety Cabinets, and Clean Benches.

8. CASH PAID-Top dollar paid, and you can sell your excess, obsolete, surplus equipment with us. We can buy it or sell on consignment.

9. DIVERSIFIED-We sell a very broad line of new and used Lab Equipment. See our detailed listing above.

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