Posts Tagged ultrasonic level

Troubleshooting Siemens MultiRanger/HydroRanger mA Inputs

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.

Read the rest of this entry »

, , , , , ,

Leave a comment

The 15-30-15 Rule in Ultrasonic Level Measurements

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.

Read the rest of this entry »

, , , , , , , , , , , , ,

Leave a comment

Get Your Lesman Level Catalog!

Lesman 2016 Level MiniCatOur 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 »

, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Leave a comment

Viewing data logs in Excel format (Siemens LUT 400 Ultrasonic Level Controller)

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.
Lut 400 1

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)

Read the rest of this entry »

, , , , , , , , ,

Leave a comment

Why won’t Pactware work with the Siemens LUT 400?

Written by: Dan Weise

I’ve used Pactware for a couple years now, so I was surprised when I couldn’t get the Siemens LUT400 to work with the software. The LUT400 ultrasonic level and flow controller comes with a DTM file that I installed before opening the Pactware software.

The DTM file can be downloaded from this link: http://tinyurl.com/cqk2cky

Once it had been installed, I opened Pactware and updated the device catalog, as seen in the picture below:

1

But when I attempted to establish a HART connection to the LUT400, I got an error message:

2

Read the rest of this entry »

, , , , , , , , , , , ,

Leave a comment

Does ultrasonic level measurement work with a standpipe?

The easy answer: Yes.

But in a recent webinar on choosing the best level technology for your application, the more specific answer is this: Yes, AS LONG AS you pay attention to the unit specs and a pretty simple rule of thumb.

Read the rest of this entry »

, , , , , , , , , , , , ,

Leave a comment

How to keep condensation from affecting Siemens ultrasonic level sensors

Recently, a customer noticed that the Siemens ultrasonic level measurement system he had installed in a storage bin showed a signficant amount of moisture buildup. At extreme temperature changes (like we’ve seen a lot latele here in the Midwest), there’d be moisture buildup on the Echomax ultrasonic transducer, sometimes so severely, they’d have problems from signal loss.

How could they fix it? One quick trip to the local big-box or auto supply store provided a Siemens-supported solution.

 

Read the rest of this entry »

, , , , , , , , , , , , ,

Leave a comment

%d bloggers like this: