Schubert & Salzer Control Systems: control technology for liquid and gaseous media flows
Schubert & Salzer Control Systems GmbH is part of the Schubert & Salzer Group, headquartered in Ingolstadt. Core business of the company lies in the development and commercialization of innovative solutions in control technology for liquid and gaseous media flows.
Company employees in Germany and abroad focus their activities on customers and their requirements, while the use of the latest production technologies enables Schubert & Salzer Control Systems to guarantee high-end products that are subject to constant monitoring. Quality management is certified according to the international quality standard ISO 9001 and ensures that the quality of products is maintained at a high level through internal and external audits as well as monitoring measures conducted in parallel.
Optimal ratio of oxygen and fuel at melting furnaces
The creation of high quality glass involves, amongst other things, the precisely controlled supply of oxygen, oxy fuel and natural gas to the melting furnace. The maintenance of the optimal ratio of oxygen and fuel for each individual burner requires precise control. Sliding gate valves from Schubert & Salzer Control Systems offer the ideal solution for this task. The most important requirement for very short reaction times for an actuator are short positioning paths, small actuation volumes and low actuation forces resulting from these. All of these properties come together in the sliding gate valve. In this valve, a pair of slotted discs slide against each...
Company employees in Germany and abroad focus their activities on customers and their requirements, while the use of the latest production technologies enables Schubert & Salzer Control Systems to guarantee high-end products that are subject to constant monitoring. Quality management is certified according to the international quality standard ISO 9001 and ensures that the quality of products is maintained at a high level through internal and external audits as well as monitoring measures conducted in parallel.
Optimal ratio of oxygen and fuel at melting furnaces
The creation of high quality glass involves, amongst other things, the precisely controlled supply of oxygen, oxy fuel and natural gas to the melting furnace. The maintenance of the optimal ratio of oxygen and fuel for each individual burner requires precise control. Sliding gate valves from Schubert & Salzer Control Systems offer the ideal solution for this task. The most important requirement for very short reaction times for an actuator are short positioning paths, small actuation volumes and low actuation forces resulting from these. All of these properties come together in the sliding gate valve. In this valve, a pair of slotted discs slide against each...
Schubert & Salzer Control Systems GmbH is part of the Schubert & Salzer Group, headquartered in Ingolstadt. Core business of the company lies in the development and commercialization of innovative solutions in control technology for liquid and gaseous media flows.
Company employees in Germany and abroad focus their activities on customers and their requirements, while the use of the latest production technologies enables Schubert & Salzer Control Systems to guarantee high-end products that are subject to constant monitoring. Quality management is certified according to the international quality standard ISO 9001 and ensures that the quality of products is maintained at a high level through internal and external audits as well as monitoring measures conducted in parallel.
Optimal ratio of oxygen and fuel at melting furnaces
The creation of high quality glass involves, amongst other things, the precisely controlled supply of oxygen, oxy fuel and natural gas to the melting furnace. The maintenance of the optimal ratio of oxygen and fuel for each individual burner requires precise control. Sliding gate valves from Schubert & Salzer Control Systems offer the ideal solution for this task. The most important requirement for very short reaction times for an actuator are short positioning paths, small actuation volumes and low actuation forces resulting from these. All of these properties come together in the sliding gate valve. In this valve, a pair of slotted discs slide against each other transversely to the direction of flow. Thus, the sliding gate valve seals without any metallic seat.
The typical stroke between closed and open is a mere 6 to 9 millimetres. One of the most notable advantages resulting from this operating principle is the low actuation force required for the positional movements. Sliding gate valves therefore control with rapidity and precision, enabling fast adaptation to the quantities flowing through and the power required by the glass crucible.
This ensures that the oxygen/fuel supply is optimised for the firing of the glass furnace. After the melting process, sliding gate valves are used again to control urea or ammonia for the denitration of the gases given off from the furnace (nitrogen removal process). But it is not just the glass melting process which offers opportunities to use valves from Schubert & Salzer: they are also employed for the fine metering of cooling air in the production of windscreen glass (for aircraft windows, for example).
Sliding gate valves from Schubert & Salzer Control Systems have DVGW approval and are available also in an EX protection version.
Controlling liquid and gas flows rapidly and with high precision repeatability
Normally, control valves used in process control circuits are equipped with pneumatic actuators. The advantages of this design are rapid positioning speed and high resolution of the valve position, both being prerequisites in achieving a satisfactory standard of control accuracy. However, in this case, the power supply can be a cause of concern since electro-pneumatic positioners require instrument air which is sometimes difficult to provide. In principle, an electrical power supply would be less problematical for this purpose, but the positioning of motorised control valves is slow and they are subject to very high hysteresis which makes them unsuitable for many control tasks.
The new motorised actuation from Schubert & Salzer Control Systems has overcome these drawbacks as it sets new benchmarks in terms of resolution and positioning speed. The actuation of the 2030 series, comprising an electric stepping motor, a flexible coupling, a gearbox and stroke detection, is designed and manufactured to a high degree of precision. The stepping motor defines 400 steps per revolution. Every part of the gearbox is made of steel which guarantees a long service life. Therefore, each step of the motor results in a displacement of a mere 1.5 μm. At the same time, the new 2030 actuator can achieve positioning speeds of up to 1.3 millimetres per second.
Furthermore, the stroke detection for position feedback consists of extremely sturdy metal guides, a linear potentiometer and limit switches with Hall sensors. By using a 12 bit AC/DC converter and a special interpolation process, the position of the stroke can be detected precisely with a resolution of about 3 µm. Although the sliding gate valves 8038 series combined with this 2030 actuator has a stroke of only 6 millimetres, the resolution and, therefore, the level of control, are very high, taking just 4.5 seconds to open or close. With a standard dead band setting of a mere ± 0.2 per cent, even with these small strokes, this motorised actuator achieves a repeatability accuracy of up to ± 0.1 per cent.
These values for resolution and repeatability are better by a factor of 10 than those of valve actuators available so far on the market and are setting new standards for motorised actuators.
This motorised actuator also offers self adaptation for quick commissioning. By pushing a button, the actuator searches for the end positions of the valve. As a result, it takes the operator just a few seconds to adapt the actuator to the particular valve. Naturally, this can be done also by using the optionally available communications software DeviceConfig.
Moreover, the software also offers the opportunity to define all parameters extremely easily. Monitoring and self diagnostic functions optimise operating reliability and simplify preventive maintenance.
Its sturdy aluminium body and separate terminal box are ideal prerequisites for harsh operating conditions, which are reflected also in the high IP 67 protection level. The terminals are easily accessible and enable connections for 230 V 50/60 Hz, 115 V 50/60 Hz, 24 V AC or 24 V DC power supplies and set point signal connections of 0 to 20 mA or 0 to 10 V. A binary actuation (ON/OFF/STOP) with a 24 V DC signal is also available. The unit also includes a separate manual operation which can be engaged.
The new Schubert & Salzer Control Systems motorised valve offers high speed and precision for control processes involving neutral to highly aggressive media flows in process engineering, the chemical industry or plant engineering.
SCHUBERT & SALZER CELEBRATES MORE THAN 130 YEARS OF ACTIVITIES
1883 • Carl Schubert and Bruno Salzer begin manufacturing hosiery
knitting machines in Chemnitz.
1885 • The Königliche Geschützgießerei (Royal Ordnance Foundry)
and Königliche Hauptlaboratorium (Royal Principal Laboratory) begin operations in Ingolstadt.
1887 • Carl Schubert and Bruno Salzer acquire a 4,880 square metre site in Chemnitz on which they construct
a factory for the manufacture of hosiery knitting machines.
1889 • The company founded by Carl Schubert and Bruno Salzer becomes Chemnitzer Wirkmaschinenfabrik AG.
1904 • Chemnitzer Wirkmaschinenfabrik AG is renamed Schubert & Salzer Maschinenfabrik AG. Also
bicycles and cash registers are being produced.
1920 • The Königliche Hauptlaboratorium and the Königliche Geschützgießerei are incorporated into Deutsche
Werke AG. Production is converted to civilian articles such as castings and stack fittings, then also to
spinning machines.
1925 • Deutsche Werke AG is renamed Deutsche Spinnereimaschinenbau AG (DESPAG), based in Ingolstadt.
1938 • Schubert & Salzer Maschinenfabrik AG in Chemnitz acquires a majority share holding in DESPAG
in Ingolstadt. After the Second World War the head office is relocated from Chemnitz to Ingolstadt.
1952 • Schubert & Salzer Maschinenfabrik AG becomes the second German business producing
investment castings.
1987 • Rieter AG, Winterthur, acquires a majority share holding in Schubert & Salzer Maschinenfabrik AG.
1991 • Dr. Arnold Kawlath acquires the Schubert & Salzer castings and fittings businesses. A holding company,
Schubert & Salzer GmbH, now controls the Schubert & Salzer Group, comprising:
- Schubert & Salzer Eisenguss GmbH (iron casting)
- Schubert & Salzer Feinguss GmbH (investment casting)
- Schubert & Salzer Ingolstadt-Armaturen GmbH (fittings)
- Schubert & Salzer Control Systems GmbH
The spinning machine business Schubert & Salzer Maschinenfabrik AG is renamed Rieter Ingolstadt Spinnereimaschinenbau AG. The name Schubert & Salzer remains for the castings and fittings businesses.
The Schubert & Salzer Group acquires the modular cast iron foundry of GISAG AG in Leipzig.
The Schubert & Salzer Group acquires investment casting company Feingusswerk Lobenstein GmbH in Thuringia.
1992 • The factory premises of the iron foundry in Leipzig are being completely modernised.
This involves investments of about 75 million Euros in state-of-the-art technical equipment like
in a brand new Heinrich-Wagner-Sinto moulding-plant.
1994 • The second-oldest iron foundry in Germany, Eisenwerk Erla GmbH in Saxony, founded in 1330,
is acquired. Schubert & Salzer GmbH and Schubert & Salzer Control Systems GmbH establish
their joint subsidiary Schubert & Salzer UK Ltd.
1995 • The Schubert & Salzer large iron castings foundry in Leipzig is sold to Georg Fischer AG, Schaffhausen.
At the same time, the Erla foundry is reconstructed and the remaining foundry operations are relocated
from Ingolstadt to Erla.
1996 • The company gives up all its leased buildings in Ingolstadt and moves into a new company-owned
facility at 38 Bunsenstrasse.
1997 • Establishment of Schubert & Salzer France SARL, a subsidiary of Schubert & Salzer
Control Systems GmbH.
1998 • Schubert & Salzer GmbH establishes its subsidiary Schubert & Salzer Data GmbH.
Schubert & Salzer Ingolstadt-Armaturen GmbH is sold to British company DELTA.
1999 • Schubert & Salzer Control Systems GmbH establishes its subsidiary Schubert & Salzer Inc., USA.
2004 • The Schubert & Salzer Group becomes an entirely family-owned business.
2007 • Schubert & Salzer Eisenwerk Erla GmbH is sold to the Indian Sanmar Group.
Establishment of Schubert & Salzer Benelux BVBA/SPRL.
2011 • Schubert & Salzer Control Systems GmbH opens a Liaison Office in Mumbai, India.
Company employees in Germany and abroad focus their activities on customers and their requirements, while the use of the latest production technologies enables Schubert & Salzer Control Systems to guarantee high-end products that are subject to constant monitoring. Quality management is certified according to the international quality standard ISO 9001 and ensures that the quality of products is maintained at a high level through internal and external audits as well as monitoring measures conducted in parallel.
Optimal ratio of oxygen and fuel at melting furnaces
The creation of high quality glass involves, amongst other things, the precisely controlled supply of oxygen, oxy fuel and natural gas to the melting furnace. The maintenance of the optimal ratio of oxygen and fuel for each individual burner requires precise control. Sliding gate valves from Schubert & Salzer Control Systems offer the ideal solution for this task. The most important requirement for very short reaction times for an actuator are short positioning paths, small actuation volumes and low actuation forces resulting from these. All of these properties come together in the sliding gate valve. In this valve, a pair of slotted discs slide against each other transversely to the direction of flow. Thus, the sliding gate valve seals without any metallic seat.
The typical stroke between closed and open is a mere 6 to 9 millimetres. One of the most notable advantages resulting from this operating principle is the low actuation force required for the positional movements. Sliding gate valves therefore control with rapidity and precision, enabling fast adaptation to the quantities flowing through and the power required by the glass crucible.
This ensures that the oxygen/fuel supply is optimised for the firing of the glass furnace. After the melting process, sliding gate valves are used again to control urea or ammonia for the denitration of the gases given off from the furnace (nitrogen removal process). But it is not just the glass melting process which offers opportunities to use valves from Schubert & Salzer: they are also employed for the fine metering of cooling air in the production of windscreen glass (for aircraft windows, for example).
Sliding gate valves from Schubert & Salzer Control Systems have DVGW approval and are available also in an EX protection version.
Controlling liquid and gas flows rapidly and with high precision repeatability
Normally, control valves used in process control circuits are equipped with pneumatic actuators. The advantages of this design are rapid positioning speed and high resolution of the valve position, both being prerequisites in achieving a satisfactory standard of control accuracy. However, in this case, the power supply can be a cause of concern since electro-pneumatic positioners require instrument air which is sometimes difficult to provide. In principle, an electrical power supply would be less problematical for this purpose, but the positioning of motorised control valves is slow and they are subject to very high hysteresis which makes them unsuitable for many control tasks.
The new motorised actuation from Schubert & Salzer Control Systems has overcome these drawbacks as it sets new benchmarks in terms of resolution and positioning speed. The actuation of the 2030 series, comprising an electric stepping motor, a flexible coupling, a gearbox and stroke detection, is designed and manufactured to a high degree of precision. The stepping motor defines 400 steps per revolution. Every part of the gearbox is made of steel which guarantees a long service life. Therefore, each step of the motor results in a displacement of a mere 1.5 μm. At the same time, the new 2030 actuator can achieve positioning speeds of up to 1.3 millimetres per second.
Furthermore, the stroke detection for position feedback consists of extremely sturdy metal guides, a linear potentiometer and limit switches with Hall sensors. By using a 12 bit AC/DC converter and a special interpolation process, the position of the stroke can be detected precisely with a resolution of about 3 µm. Although the sliding gate valves 8038 series combined with this 2030 actuator has a stroke of only 6 millimetres, the resolution and, therefore, the level of control, are very high, taking just 4.5 seconds to open or close. With a standard dead band setting of a mere ± 0.2 per cent, even with these small strokes, this motorised actuator achieves a repeatability accuracy of up to ± 0.1 per cent.
These values for resolution and repeatability are better by a factor of 10 than those of valve actuators available so far on the market and are setting new standards for motorised actuators.
This motorised actuator also offers self adaptation for quick commissioning. By pushing a button, the actuator searches for the end positions of the valve. As a result, it takes the operator just a few seconds to adapt the actuator to the particular valve. Naturally, this can be done also by using the optionally available communications software DeviceConfig.
Moreover, the software also offers the opportunity to define all parameters extremely easily. Monitoring and self diagnostic functions optimise operating reliability and simplify preventive maintenance.
Its sturdy aluminium body and separate terminal box are ideal prerequisites for harsh operating conditions, which are reflected also in the high IP 67 protection level. The terminals are easily accessible and enable connections for 230 V 50/60 Hz, 115 V 50/60 Hz, 24 V AC or 24 V DC power supplies and set point signal connections of 0 to 20 mA or 0 to 10 V. A binary actuation (ON/OFF/STOP) with a 24 V DC signal is also available. The unit also includes a separate manual operation which can be engaged.
The new Schubert & Salzer Control Systems motorised valve offers high speed and precision for control processes involving neutral to highly aggressive media flows in process engineering, the chemical industry or plant engineering.
SCHUBERT & SALZER CELEBRATES MORE THAN 130 YEARS OF ACTIVITIES
1883 • Carl Schubert and Bruno Salzer begin manufacturing hosiery
knitting machines in Chemnitz.
1885 • The Königliche Geschützgießerei (Royal Ordnance Foundry)
and Königliche Hauptlaboratorium (Royal Principal Laboratory) begin operations in Ingolstadt.
1887 • Carl Schubert and Bruno Salzer acquire a 4,880 square metre site in Chemnitz on which they construct
a factory for the manufacture of hosiery knitting machines.
1889 • The company founded by Carl Schubert and Bruno Salzer becomes Chemnitzer Wirkmaschinenfabrik AG.
1904 • Chemnitzer Wirkmaschinenfabrik AG is renamed Schubert & Salzer Maschinenfabrik AG. Also
bicycles and cash registers are being produced.
1920 • The Königliche Hauptlaboratorium and the Königliche Geschützgießerei are incorporated into Deutsche
Werke AG. Production is converted to civilian articles such as castings and stack fittings, then also to
spinning machines.
1925 • Deutsche Werke AG is renamed Deutsche Spinnereimaschinenbau AG (DESPAG), based in Ingolstadt.
1938 • Schubert & Salzer Maschinenfabrik AG in Chemnitz acquires a majority share holding in DESPAG
in Ingolstadt. After the Second World War the head office is relocated from Chemnitz to Ingolstadt.
1952 • Schubert & Salzer Maschinenfabrik AG becomes the second German business producing
investment castings.
1987 • Rieter AG, Winterthur, acquires a majority share holding in Schubert & Salzer Maschinenfabrik AG.
1991 • Dr. Arnold Kawlath acquires the Schubert & Salzer castings and fittings businesses. A holding company,
Schubert & Salzer GmbH, now controls the Schubert & Salzer Group, comprising:
- Schubert & Salzer Eisenguss GmbH (iron casting)
- Schubert & Salzer Feinguss GmbH (investment casting)
- Schubert & Salzer Ingolstadt-Armaturen GmbH (fittings)
- Schubert & Salzer Control Systems GmbH
The spinning machine business Schubert & Salzer Maschinenfabrik AG is renamed Rieter Ingolstadt Spinnereimaschinenbau AG. The name Schubert & Salzer remains for the castings and fittings businesses.
The Schubert & Salzer Group acquires the modular cast iron foundry of GISAG AG in Leipzig.
The Schubert & Salzer Group acquires investment casting company Feingusswerk Lobenstein GmbH in Thuringia.
1992 • The factory premises of the iron foundry in Leipzig are being completely modernised.
This involves investments of about 75 million Euros in state-of-the-art technical equipment like
in a brand new Heinrich-Wagner-Sinto moulding-plant.
1994 • The second-oldest iron foundry in Germany, Eisenwerk Erla GmbH in Saxony, founded in 1330,
is acquired. Schubert & Salzer GmbH and Schubert & Salzer Control Systems GmbH establish
their joint subsidiary Schubert & Salzer UK Ltd.
1995 • The Schubert & Salzer large iron castings foundry in Leipzig is sold to Georg Fischer AG, Schaffhausen.
At the same time, the Erla foundry is reconstructed and the remaining foundry operations are relocated
from Ingolstadt to Erla.
1996 • The company gives up all its leased buildings in Ingolstadt and moves into a new company-owned
facility at 38 Bunsenstrasse.
1997 • Establishment of Schubert & Salzer France SARL, a subsidiary of Schubert & Salzer
Control Systems GmbH.
1998 • Schubert & Salzer GmbH establishes its subsidiary Schubert & Salzer Data GmbH.
Schubert & Salzer Ingolstadt-Armaturen GmbH is sold to British company DELTA.
1999 • Schubert & Salzer Control Systems GmbH establishes its subsidiary Schubert & Salzer Inc., USA.
2004 • The Schubert & Salzer Group becomes an entirely family-owned business.
2007 • Schubert & Salzer Eisenwerk Erla GmbH is sold to the Indian Sanmar Group.
Establishment of Schubert & Salzer Benelux BVBA/SPRL.
2011 • Schubert & Salzer Control Systems GmbH opens a Liaison Office in Mumbai, India.
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