Need help figuring out what type sensor you need for your automation system? This handy temperature curve chart might help. If not, give Kele a call! Sensor Type Temperature Sensor Description Typical Sensor User 3 10,000Ω @ 77°F, Type III material AET, American Automatrix, Andover, Carrier, Delta, Invensys, Teletrol, York 21 2252Ω @ […]
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Time Delay Relay Functions Explained
Understanding the differences between various time delay relay operations such as On-Delay or Interval can be a bit confusing. These simple diagrams may make it easier to visualize what’s happening during the timer operation(s). At Kele, our goal is to make product selection and usage as easy as […]
Read PostExtend Your Reach with the ST-A Series by Precon
Kele’s Precon brand has a sensor solution for ALL your application needs, even the odd ones! Job site situation #1: You need a temperature sensor for your tank or cooling tower sump, but they don’t make one long enough. Special ordering one seems daunting. What if it doesn’t work out and you can’t send it back? […]
Read PostGreen Buildings need Clean Electrical Power for Sustainability
Major changes are taking place in the United States as we all move forward to reduced energy consumption and utilization of renewable energy sources in our homes, offices, campus environments, and factories. As new technology becomes available with ever increasing returns on investment many owners are ready to become part of the “Green Movement” that […]
Read PostTHE (RS-485 Network) TERMINATOR Or The Dance of the Data Pulses
If you’re involved with building automation systems you know (unless you’ve been living under a rock like the guy in that insurance commercial) that the modern trend is to connect all your building controls together on networks. Networks make it easy to add or move control nodes as your building control needs change since the […]
Read PostWhat Are Power System VARs?
Most people involved in building automation are familiar with kW, which is the rate at which a building is consuming energy from the power company. But there is another power system parameter known as VAR/kVAR which is less well understood. In this article we will attempt to dispel some of the VAR mystery. The term […]
Read PostAC to DC – Linear Versus Switch-Mode Power Supplies
For years, Kele has provided dependable, quality 24 VDC power supplies like the DCP-1.5-W, DCPA-1.2, DCP-250, PW2, and the SLS Series. All of these DC power supplies are “linear” power supplies. Another type of DC power supply gaining popularity with building automation and temperature control contractors is called a “switch-mode” power supply (PS6R Series). While both […]
Read PostGet Ahead of the Curve
Understanding and then selecting the right temperature curve might seem like a daunting task. To a newbie, it might seem impossible but there is a logical, systematic method to selecting the right temperature sensor. Basically, the thermistors we use in our systems have negative temperature coefficients meaning as the temperature rises, the corresponding resistance […]
Read PostNeed Help Retrofitting Pneumatics to Electric Actuators?
In the current economic times it can be difficult to convince a client that it is necessary to remove a working valve just to change out the pneumatic actuator controlling it. Re-piping and draining the system alone means down time and extra labor that probably isn’t in the budget. The obvious solution is to leave […]
Read PostKele Pieces Together the Component Hospital
One of the great perks of working for the nation’s leading supplier of building automation products is field trips to locations where there are interesting applications for our products. Case in point, I drove to Joplin on February 21st in my quest to learn more about Joplin’s “component” hospital. If you remember, Kele was Xcel Mechanicals […]
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