We are renovating a room that has been classified Class II, Division 2. I have asked my collegues about certain items on similar applications that did not have a Class II certification, but were considered dust-tight. (Such as data connections). Their opinion is that dust-tight (gasketed) items...
I have an application when some rooms are classified Class II, Div 2, group G. I have been looking for receptacles that are only for Class II but it seems that they are all class I and II. It seems like overkill and I'm wondering if anyone out there is aware of a Class II only receptacle.
Thanks!
I have an application where a DC motor drives a leadscrew. At the end of travel, there is no limit switch. The current design uses a poly-switch to determine the end of travel has been reached. I'd like to change this to something a bit more fast acting. My first thought is to use a current...
A few years ago I did a project that had a PLC with about 120 I/O mounted in a continuosly rotating table. The slip ring provided power, about 12 I/O, and communications connection for PLC programming (9600 baud). Never had any problems.
Yes, I've wemt to Siemens and AB. I just got a revised quote from AB that was much more in line with what I would expect to pay. It was less than half the price of the original quote. I reviewed all the specs to ensure the comparisons were equal and they are.
Thanks for the feedback.
I need to supply wye-delta motor starters for equipment going to Europe. I was shocked by the pricing I received on the units. I thought these where not much more than a standard motor starter with an additional contactor and some timing hardware. Can these be made from individual components?
If the temperature of the chamber is above 760 deg C, you can do a "purge bypass" according to NFPA 86. You need a separately derived temperature sensor and a stand alone controller. We use this system in industrial gas fired furnaces.
