Posts Tagged level transmitter
Get Your Lesman Level Catalog!
Posted by danstips in Honeywell, Level, Level Technology, Level Transmitters, Siemens, Transmitters, WIKA on February 11, 2016
Our level products manufacturers have released several new instruments to make your measurement tasks easier, more efficient, and more effective. So, we’ve put together a new Lesman Level Products catalog to introduce you to the latest technology.
What’s inside?
Read the rest of this entry »
LUT400 universal 4-20mA analog output gets rid of the ground loop
Posted by danweise in 4-20mA, HART, Installation, Level, Level Transmitters, Ultrasonic on August 16, 2013
The Problem
Before I talk about the value of a universal 4-20mA analog output on a level controller, let me explain why anyone would care. It’s all about ground loops.
Since the early days of electronic instrumentation, way back when, even before cell phones or PCs, instrument people struggled with ground loops that create an offset error, drive the signal off scale, or burn up an analog circuit.
What does NAMUR NE 43 do for me?
Posted by danstips in Honeywell, Level, Level Technology, Measurement, NAMUR, Pressure, Pressure Transmitters, pressure transmitters, Process terminology, Siemens, Standards, Transmitters on February 17, 2012
People have asked me about setting fault alarms in level transmitter analog signals at 2mA or 3mA levels. What they typically don’t understand is that a two-wire transmitter uses the electrical current below 3.6 mA for its own power and operation. So, a 2.0 mA or 3.0 mA fault indication just isn’t possible. At these low currents, there wouldn’t be enough power to generate the fault indication signal and to keep the transmitter functioning properly. Read the rest of this entry »
Lesman Tech Tips 