Measurement for H2SO4

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Thread Starter

Nuno Torrado

My question is what is usually in the industry. I could measure it with a ultrassonics, but I don't know if that's a standard. There are some 4-20mA sensors to dive in the tank?

Thanks in advance
 
You might consider using radar based systems form Thermomeasure Tech Accu Wave Radar.

HTG by Foxboro (www.foxboro.com) may also work.

Problems with ultrasonic devices are fumes, and though not sure on the concentration of H2SO4 you are using, this can cause a problem and you might even have ashes as well.
 
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H2SO4 concentration?

How much can you spend and how accurate does it need to be? Is it only H2SO4 - or a mix of other ionic compounds?
1. Use an autotitrator and sampling system - probably accurate to 1%, I'd guess you'd spend about USD$15k on the bits (excl installation)

2. OR - A combination of temperature and conductivity should give you a rough concentration. I think I've used this before I just can't remember where I got the lookup chart from.

Cheers, PB

PS - Ultrasonics? I don't think so.
 
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Bob Peterson

Most instrument companies have conductivity meters already setup to read directly in % H2SO4 (and various other acids and caustics).

Try Foxboro, Rosemount, etc. The usual suspects.

Bob Peterson
 
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Greg DeRudder

Monitor Technologies LLC sells ultrasonic level measurement equipment that is compatable with H2SO4 (100%).

Give me a call at 800-766-6486 or visit our website http://www.monitortech.com for more information.

Best Regards,
Greg DeRudder
Technical Sales Support Manager
 
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Mike Sweeney

In-Line Process Refractometers are also used to measure H2SO4. Through the use of intrinsic safety barriers (if needed), the sensor can be operated in any hazardous area. Should anyone want more information please visit our chemical document,
http://www.lsc-e-net.com/pdf/chem.pdf.
 
K

Koblenz, Mykel MH

I would be inclined to go with the ultrasonic (or radar), but forst check with a few local reps. Make them earn their wage and get them do give you some advice.

Mick
 
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Willem Pieterse

Ultrasonic sound velocity is the recommended method for concentrations above 70%. The sound velocity is just about linear with the concentration of H2SO4 in this range without any strange effects as with density, conductivity or refractive index. Rhosonics sells analyzers including Hastelloy probes that can be fit in a tank or in a pipe line. Check our their website http://www.rhosonics.com.
 
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