Posts Tagged Siemens ultrasonic
A “So What” review of Siemens new SITRANS LUT400 ultrasonic level controller
Posted by danstips in Control, Echomax transducers, Flowmeters, Level, Level Technology, Open Channel Flow, Siemens, SO WHAT Reviews, Ultrasonic on November 5, 2012
Part of my job as the technical specialist at Lesman is to make sense of new products and upgrades, and figure out what’s really going to matter most to our customers.
Sometimes it’s just a matter of a much-needed new functionality, or better configuration tools, easier mounting, or switching to the most current form of data storage.
In the case of Siemens’ latest ultrasonic controller, it’s all that and more.
Siemens (and Milltronics) ultrasonic controllers and transceivers, like the HydroRanger, MultiRanger, and OCM-III have been around for years with no significant improvements. Instead of updating these devices, Siemens has done a complete redesign, and introduces the SITRANS LUT400 as the first device in the new ultrasonic controller family.
Here are my initial thoughts on this new player in the ultrasonic game.
Why is my clamp-on flowmeter’s flow rate stuck at zero?
Posted by danstips in Configuration, Flow, Flowmeters, Repairs, Service, Siemens, Ultrasonic Flowmeters on August 28, 2012
I was working with a customer to replace a Siemens clamp-on ultrasonic flowmeter after its electronics had been replaced. We followed all the connection and startup instructions, but the flow rate was stuck at 0.00 – no dithering, no hunting, not a single flicker in the low-order digits.
Very strange.
Ultrasonic clamp-on flowmeters can be very sensitive to low flows. But even at no flow with the pump turned off or the line isolated, the digits to the right of the decimal point would dither around zero, showing some very small positive values, some very small negative values. It’s the nature of the beast.
So why were we getting an absolute zero reading? What was going on?
The Impact of Background Echoes on Ultrasonic Level Measurement
Posted by danstips in Configuration, Echomax transducers, Installation, Level, Level Technology, Measurement, Siemens, Ultrasonic, Uncategorized on June 21, 2012
Photography is a pretty good way to illustrate the importance of background.
Look at the two photographs here. In one, the background is minimal, and focuses your eye on the subject matter. In the other, the background seriously detracts from the subject. Where should you be focusing? What’s most important?
But unlike photography, where a good background helps you focus on the subject, in the world of non-contact ultrasonic level measurement, even a “good” background has a negative influence. Background never contributes to a level reading, it only detracts. But Siemens has a built-in function to “cure” for the influence of backgrounds in their level devices. Read the rest of this entry »
What’s the best location to install an ultrasonic level transducer?
Posted by danweise in Echomax transducers, Installation, Level, Level Technology, Measurement, Siemens, Troubleshooting, Ultrasonic on January 27, 2012
Pop Quiz: When you’re mounting an ultrasonic level transducer at the top of a tank, what’s the best location?
Here’s a hint: It’s not #3.
I admit: That didn’t make sense to me. Why not place the ultrasonic sensor in the center of domed tank roof?
Read the rest of this entry »
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