Fast, reliable and specific detection of hydrofluoric acid (HF) is indispensable in many manufacturing environments. The model HFT and HFM sensors detect HF by its etching action on an anodic Silicon dioxid film covering the sensor electrode. These electrochemical sensors are therefore specific to the presence of HF in the solution.

Outline
The HFT-sensor is designed as a safety-tool to detect hydrofluoric acid in liquids of unknown composition within a second. A bright red LED indicates the presence of HF.


Specifications
Sensitivity 1% - 50% HF
Sensor lifetime > 1000 tests
Power supply 2 x 3V Lithium Batt.
Temperature range 0° - 50° Celsius

Outline
The HFM-meter is designed for single and continuous measurements of the concentration of hydrofluoric acid solutions. By simultaneous measurement of solution temperature and activity the computed value displayed is corrected for temperature. The HFM-meter is equipped with a touch screen display for simple menu selection.


Specifications
Concentration range 0.1% - 1 % HF (rel. Error 20%)
1% - 15 % HF (rel. Error 10%)
15% - 50 % HF (rel. Error 30%)
Response time < 15 seconds
Sensor lifetime > 10.000 single measurements
Temperature range 0° - 50° Celsius

For further information and ordering please contact:

Dr. V. Lehmann
FAX ++49 89 56826696
e-mail: vl@hf-acid-sensors.de

After the sudden and tragic death of Dr. Volker Lehmann in 2006, part of his former business acivities have been taken over by Sievert Consulting Wunstorf.

This refers specifically to the HFT Sensor Pen which is today exclusively manufactured and distributed by Sievert Consulting.

Therefore all inquiries concerning the HFT Sensor Pen and other issues related to the safe handling of Hydrofluoric acid should be sent to

Sievert Consulting
Dresdener Str. 10
D-31515 Wunstorf – Germany
Fax: +49 5031 67577

e-Mail: info@sievertconsulting.de
Web: www.sievertconsulting.de

 Bau & Vertrieb elektronischer Messgeräte
Geyerspergerstr. 53
80689 München

V. Lehmann deems the data contained herein as factual, and the opinions expressed are those of qualified experts based on the results of tests conducted. The above data can not be used as a warranty provision or representation for which V. Lehmann assumes legal responsibility. The data are offered solely for consideration, investigation and verification. Any use of this information is subject to federal, state and local laws and regulations

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