Thermostats and Thermal Switches Information Thermostats and thermal switches are electro-mechanical on/off switches that are activated by temperature changes. They are used to control heating and cooling systems. The sensing element is usually a spiral bimetallic strip that coils and uncoils in response to temperature changes because of the differential expansion of the two bonded metals. The switch element is either a set of electrical contacts or a glass-encapsulated mercury switch that...
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Q & A on Thermostats and Thermal Switches

We asked our users for their input on Thermostats and Thermal Switches. Here are the results of 36 users familiar with Thermostats and Thermal Switches.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice |

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing thermostat and thermal switch design?
4 answers
Answers:
For myself the physical size of equipment in switchboards is reducing, meaning a lot of people are squeezing more gear into cubicles but the heat output of this gear has not reduced in comparison.
~Manufacturing, Auckland, New Zealand
I believe that thermal adhesives which allow true temperature transfer from the heat source to the monitoring device are allowing more accurate data for the thermostats to read.
~Stephen H, Quality Control, NASA Stennis Space Center, MS
Infra red observation, bimetal, transisters
~Engineering, Design, Brantford, Canada
Wireless, and remote monitoring and control
~Engineering, Other, Nashville, TN

Q:
From your perspective, which companies are creating the most innovative thermostats and thermal switches?
5 answers
Answers:
I only use products which are readily available which tends to be very limited in my city. So it would be Cosmotech & Pfanenberg.
~Manufacturing, Auckland, New Zealand
I am not qualified to comment on this topic.
~Stephen H, Quality Control, NASA Stennis Space Center, MS
Globalspec, kayden, klixon, thermalswitch
~Engineering, Design, Brantford, Canada
Reviewed by me - almost all the same
~Viktor Aristov, Production Engineer, Riga, Latvia
Honeywell
~Engineering, Other, Nashville, TN

Applications and UseTop

Q:
What are some of the applications you have used thermostats and thermal switches for?
18 answers
Answers:
Of course there are the common ones on the HVAC unit at home, and the water heater. I have also maintained and set such switches on boiler units in conjunction with pressure valves that are designed to maintain heat and pressure in a finely designated margin in relation to each other. Other applications have been in simple monitoring equipment as warning devices to tell when a problem is developing. This stretches from devices getting too hot, similar to the car radiator, to getting too cool, like an oven switch as simplified examples; however my applications were much more involved than that.
~Stephen H, Quality Control, NASA Stennis Space Center, MS
From residential to Industrial application, Ac system to Complete chiller application for production to AHU'S.
~Engineering, Other, Nashville, TN
My most common applications are- anti condensation heaters in outdoor cabinets & cooling for switchboards.
~Manufacturing, Auckland, New Zealand
Low-temperature oil-bath precision liquid thermostat with Peltier elements and thermal pipes
~Research & Development, Kharkiv, Ukraine
As controllers, limit switches, turn heaters on/off,furnaces,tank level ,heat trace, etc...
~Marketing/Sales, Hamilton, NJ
Commercial& Residential H.V.A.C. , fire suppression systems, Refrigeration Etc.
~Technical Support/Services, Vero Beach, FL
Surface heaters, heated paint applications, heated forming, thermostats
~Engineering, Design, Brantford, Canada
High voltage electrical motors and steam generators/boilers
~Engineering, Other, Lower Barrackpore, Trinidad and Tobago
Updating air conditioner, reworking bad coffee maker etc.
~Technical Support/Services, Port Orange, FL
Environmental heating for pet and research animals
~Engineering, Design, Adelaide, Australia
Refrigeration,domestic application.
~Technical Support/Services, Suva, Fiji
Hvac, snow melting, heat trace.
~Project Management, Lethbridge, Canada
Temperature control, protective
~Viktor Aristov, Production Engineer, Riga, Latvia
In airconditioning, motors.
~Other, Lapu, Philippines
Motorcycle cooling system
~Engineering, Other, Dardanup, Australia
Thermostats for heater.
~Pipop Promkate, Technical Support, RAYONG, THAILAND
Heating, cooling.
~Chad D, Process Control Tech., Kalispell, MT
Incubators
~Mohamed Salim, Technical Support, Kuwait, Kuwait

Q:
Please share with us any “non-standard” applications that thermostats and thermal switches have been used for.
2 answers
Answers:
Any device that has to operate in a given temperature range is a standard application for thermostats and thermal switches.
~Stephen H, Quality Control, NASA Stennis Space Center, MS
Yogurt making , incubators , optical mirror grinding
~Engineering, Design, Brantford, Canada

FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
3 answers
Answers:
I believe that a thermostat driven switch that can cover a wide range of settings and still hold accurate calibration would be vital to universal application rather than separate parts for each application. This would lead to less units having to be stocked (which you always have every one but the one you need), to being able to grab one and set it to its individual application.
~Stephen H, Quality Control, NASA Stennis Space Center, MS
Miniature bi-metal for temperatures 360 - 400 C
~Viktor Aristov, Production Engineer, Riga, Latvia
Dual mounting (screw fix & din mount)
~Manufacturing, Auckland, New Zealand

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using thermostats and thermal switches?
2 answers
Answers:
Use a device with the tightest tolerances available in relation to your application. Be sure the monitoring portion of the thermostat is accurate and callibrations are current if applicable.
~Stephen H, Quality Control, NASA Stennis Space Center, MS
Do your calculations
~Manufacturing, Auckland, New Zealand

Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of thermostats and thermal switches?
2 answers
Answers:
Always follow your equipment's manufacturer's recommendations and verify any claims of parts being equivalent to or better than original equipment, as well as compatibility to the application.
~Stephen H, Quality Control, NASA Stennis Space Center, MS
As above
~Manufacturing, Auckland, New Zealand


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