Prompt reaction to temperature fluctuations in hydraulic reservoirs

(Werdohl, December 2015)

Prompt reaction to temperature fluctuations in hydraulic reservoirs

Temperature sensors lower energy consumption and extend maintenance and replacement intervals

The temperature sensors made of stainless steel 1.4305 of type TS-SNA/SNK-PT100 from Stauff are designed to determine and monitor the media temperature in hydraulic reservoirs. They cover a measuring range from -40 °C to +150 °C. They are installed either instead of the lower banjo bolt of level gauges from the SNA, SNK and SNKK series or integrated directly into the outer wall of the reservoir using a suitable adapter set.

Thanks to the platinum measuring element PT100 used (in line with EN 60751, class A), the media temperature can be recorded significantly faster, more precisely and without the usual hysteresis (of up to 20 °C) compared to conventional bimetallic temperature switches.

This allows immediate reaction to temperature fluctuations in the container which can be communicated – e.g. to an external oil cooler – via the electrical connection of the sensor which is designed as a 4-pin round plug connector M12 with gold plated contacts (A-coded, in line with IEC 61076-2-101). The amount of heat to be regulated in the tank is reduced and cooler performance and running time as well as the energy used are also clearly reduced. This results in less heat ageing of the hydraulic medium which may extend maintenance and replacement intervals under certain circumstances. It also has a positive effect on the durability of seals.

Typical areas of application include hydraulic applications which usually require the compensation of high temperature fluctuations to ensure proper operation of the systems and where there is a demand for optimising energy efficiency.

As an accessory to the temperature sensor TS-SNA/SNK-PT100, Stauff offers a corresponding display and evaluation unit for visual monitoring which displays the current system temperature in °C or °F and generates output signals according to adjustable presets. A simple signal converter for converting the measuring signal [Ohm] into the analogue output signal [4 - 20 mA] is also available.

The simple installation process makes the TS-SNA/SNK-PT100 suitable for original equipment as well as for retrofitting during normal maintenance intervals or downtimes of your hydraulic systems.


Image 1:

Temperature sensor with 4-pin round plug connector M12 (A-coded according to IEC 61076-2-101) (Courtesy of Walter Stauffenberg GmbH & Co. KG)

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Image 2:

Temperature sensor in use in an visual/electrical level gauge from the SNKK series (Courtesy of Walter Stauffenberg GmbH & Co. KG)

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Image 3:

Temperature sensor with adapter for direct installation in the tank wall (Courtesy of Walter Stauffenberg GmbH & Co. KG)

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Background Information

Walter Stauffenberg GmbH & Co. KG was founded in the 1950s in Werdohl, in the German province of North Rhine-Westphalia, and was initially a contract turning shop. Today the company operates under the trade name STAUFF, developing, producing and marketing fluid technology components for use in plant construction and mechanical engineering. In the fields of tube, pipe and hose clamps, measuring technology and hydraulic filtration, STAUFF is one of the world’s leading organisations in a growing industrial segment. 

Meanwhile, more than 1100 employees (12/2014) in 18 companies generate an annual turnover of more than EUR 200 million (12/2014) worldwide. Additional distribution subsidiaries have recently been opened in Malaysia, Vietnam and Thailand. Besides the group headquarters in Werdohl Ehrenfeld, the company has production and logistics facilities in the German cities of Plettenberg-Ohle and Neuenrade-Küntrop.

Press Contact

Mr Boris Mette
Head of Marketing Communications
Tel.: +49 (0) 2392 / 916-154
Fax: +49 (0) 2392 / 916-270154
E-Mail: b.mette@stauff.com

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