Archive for category 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.

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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.

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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?
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Move New Multi/HydroRanger Level Controller Guts into an Existing Multi/HydroRanger Enclosure

Written by: Dan Weise

The venerable Siemens Milltronics line of level controllers, the MultiRanger and HydroRanger Series, recently received a major update. The new models have high resolution LCD displays and built-in configuration tools with English language menus. Configuration time is reduced significantly without the need to reference manuals for parameter codes. These updated models have ‘HMI’ in the model name: MultiRanger HMI or HydroRanger HMI.

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LR560 ignores dust, reports true level

In a coal-fired power plant, the coal is transported from the yard to the silos on a conveyor system.

header_coal_fired_power_plants

The process of dumping coal from the conveyed buckets into the silo creates a lot of dust.

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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)

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Free Download: Siemens e-book Going the Distance – Solid Level Measurement with Radar

Written by: Dan Weise

A couple years ago, Siemens published a great handbook on using radar to measure solids levels, but the $60 price tag limited its readership.

You can now download the book for free as an electronic epub file formatted for electronic readers, which in my case, is the Firefox browser on my laptop.  It could be any browser (Internet Explorer or Chrome), or presumably any electronic book reader.

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