ProductsSolutions

Services

Liquid analysis as part ofsurface treatment
Hug Oberflächentechnik AG
relies on the Teqwave T

The core business of Hug Oberflächentechnik AG includes pickling,
electropolishing and passivating
stainless steel. The company has
more than 40 years of experiencein stainless steel processing.
The company motto “Stainless steel
surfaces from dull to glossy” roughly
describes the production processes,
which have been continuously optimized over the years. The surface
treatments have been designed fora wide variety of products, fromsimple parts to high-quality productsfor medicinal technology, the pharmaceutical industry and steriletechnology.
“The Teqwave T from Endress+
Hauser fulfilled each and every oneof our expectations with respect
to functionality, performance andtechnical design.”
Marcel Hug
Managing Director
Hug Oberflächentechnik AG
Wolfwil, Switzerland

The team at Hug Oberflächentechnik AG

Measuring the concentration in the passivation
bath using the Teqwave T

Hug Oberflächentechnik AG uses theTeqwave T as a new, versatile solution
for monitoring its passivation anddegreasing baths. The Teqwave uses
special sound waves to create an acoustic “fingerprint” of the high-quality
concentration solutions. This allows it
to take very precise measurements ofthe specific concentration and densitythat the liquid has during the treatment process.

• The automatic documentation practically eliminates the risk of errorsthat go along with manual recordkeeping of the measured concentration values.

The result• To ensure absolute process quality,
the Teqwave measures in real time
and the treatment baths can bereadjusted at any time based on thismeasurement.
• Now, all employees at Hug Oberflächentechnik AG can use theTeqwave easily and efficiently. The
result: the guarantee of consistentmeasurements – no matter which
employee is using the device.

The challenge
The old method involved indexing theconcentration in the baths each day
using an aerometer, also known as aplummet or spindle. This process included documenting the concentration
values, which are crucial in achieving
the desired process stability. The previous measuring and documentation
methods were very time-consuming andcould only be done by one specialist.
Both the manual reading and documentation steps were prone to errors.

Our solution
Hug Oberflächentechnik AG was convinced by the Teqwave Tfrom Endress+Hauser and its smart, highly versatile solution
for mobile concentration measurement. It only takes one
measuring device to monitor concentration values at numerous measuring points. As a result, product quality can bemaximized at minimum operational expenditure. The mobiletransmitter of the Teqwave T can operate for up to 8 hours
without any external power supply. Thanks to its customizable app design and preconfigured measuring points, it canbe adapted to meet specific production requirements.

The portable Teqwave T

Passivation solution

Degreasing solution

The passivation solution being used is a high-quality
product based on citric acid or nitric acid.
It is used to passivate stainless steels.

The degreasing solution is an alkaline cleaner with acomplex composition. It contains substances such as
surface-active substances and inhibitors, which prevent corrosion of the component surface. This type ofsurface cleaning is the most frequently used cleaning
method in the metalworking industry.

CS01586D/06/EN/01.19

www.addresses.endress.com