Posts Tagged ultrasonic level
Troubleshooting Siemens MultiRanger/HydroRanger mA Inputs
Posted by danstips in 4-20mA, Level, Siemens, Troubleshooting on February 9, 2017
Written by: Dan Weise
Recently, I was helping a customer troubleshoot the analog input on his Siemens MultiRanger 200.
For common troubleshooting, using voltage values to confirm a zero, mid point and span is all that’s needed. I find it easier to put a voltmeter across the analog input and read the voltage drop than to wire an amp meter into the circuit to read directly, but that assumes that the analog input’s resistor value is a known. For the most commonly used input resistance (250 ohms), the equivalent voltage drop is 1.0 to 5.0V.
Being the guy who actually reads the user manuals, I looked in the Siemens manual to find the input resistance, and it’s not there.
The 15-30-15 Rule in Ultrasonic Level Measurements
Posted by danstips in Level, Level Technology, Siemens, Troubleshooting, Ultrasonic on March 25, 2016
Written by: Dan Weise
If I’ve heard it once, I’ve heard it a dozen times when talking with a Siemens support guy while evaluating a problematic ultrasonic level measurement application,
“What’s the echo confidence and strength?” “What’s the noise measurement?”
Those are numbers that quantify the echo quality: the floor values for echo confidence and strength and the ceiling value for the noise. I’d look up the value and the guy on the phone would tell me whether the number was good, bad or so-so. Finally, someone wrote down what those values should be, and they’re worth filing for future reference.
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 »
Viewing data logs in Excel format (Siemens LUT 400 Ultrasonic Level Controller)
Posted by danstips in Flow, Level, Level Technology, Level Transmitters, Open Channel Flow, Siemens, Ultrasonic, Ultrasonic Flowmeters on December 21, 2015
Written by: Dan Weise
Siemens’ LUT 400 saves data values and alarm events in text-formatted log files. This note covers how to get the files out of the LUT400 to view them in spreadsheet format using Siemens Log Importer macro for Excel.
The text files are extracted from the LUT400 over a USB cable (mini B type connector). When the USB cable is connected to your PC, the LUT400 appears as a removable drive (circled in red, below)
Lesman Tech Tips 