Even though we don’t hear much about pneumatic controls these days, Stromquist & Company and our fellow distributors at Controls Group North America still sell a lot of pneumatic thermostats, actuators, and transmitters. So who makes the best pneumatic thermostat? Who makes the best pneumatic control line? To find out Controltrends polled our world wide community and here are the results
The top rated pneumatic control lines and percent of our community voting for them:
1) Honeywell 31.71%
2) Johnson Controls 24.39%
3) Siemens/Powers 19.51%
Johnson Controls was the winner when it came to best pneumatic thermostats:
1) Johnson Controls 36%
2) Honeywell 22%
3) Siemens/Powers 18 %
If you have a favorite pneumatic thermostat or pneumatic control line please share your thoughts in comments.
I’m surprised. Maybe it is more of a geographical issue because the Robertshaw thermostat and pneumatic product dominates our area. Not saying it is the highest quality but it has tons of market share. I think it is one of the easiest to service as well. I am curious what makes one rate JCI thermostats over the rest? What makes it the “best”.
In addition to these conventional pneumatic thermostats there is now also a fully digital programmable pneumatic thermostat from Millennial Net available which eliminates the need for calibrations, provides scheduling, provides continues branch line pressure monitoring as well as leak detection and compensation. This thermostat is fairly new on the market and therefore has not made this year’s list but due to its superior features it will make the list next time.
Hey Bull, I was surprised too. We sell a ton of Robertshaw 2212 series of pneumatic stats as well as the Robertshaw receiver controllers. They make really good pneumatic controls. We has combined Robertshaw in with Barber Colman, Invensys and Siebe since they are all part of the same company. My guess is with all the name changes their brand took a hit. They did finish ahead of KMC ( Krueter). Pneumatic controls seem to be more of a personal preference than anything.
Wow Dieter, I just went to the website: http://www.millennialnet.com/Energy-Management/Products/Wi-Stat-IIIp.aspx. Really cool looking stuff. Would you guys consider doing a post on controltrends ? Our community would be very interested in this product line.
We would be more than happy to provide further information. Please let us know how you want to do this. Will you start a separate post or should we first send you information, i.e. press releases, data sheets, etc via email?
Once again, great information! What a great source Controltrends is for information, ideas and solutions.
There is another extemely interesting product out there by the name Cypress Envirosystems that can take legacy pneumatic thermostats to a wirelss DDC BMS system in short amount of time and trouble. They’ve done integration work with Honeywell, Johnson Controls, Siemens, and a host of others. Kind of a restricted channel though.
The Cypress wireless pneumatic thermostat is a cost effective retrofit and offers the capabilities for auto demand response that can provide very good utility incentives.
David, Would you like to do a post telling our Controltrends Community about the Cypress pneumatic thermostats?
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When an electrical device just needs to be simply switched on or off based on a particular pressure, a proportional signal may be unnecessary and a simpler pneumatic-electric relay might do the job. The KMC CCE-3000 series or CCE-1001/1002 pneumatic-electric relays, for example, are ideal for applications such as starting fan coil unit fans, exhaust fans, and direct control of electric duct heaters.