Used Level Evaluation Device for sale (16,762)

Condition: good (used), Level limit switch, level measuring device, sensor, switch, level transmitter, limit level detector, limit switch, level switch, level sensor, level evaluation unit, level indicator -Manufacturer: Endress+Hauser, level indicator unit, original packaging -Type: Silometer FMC 320 -Item No.: 922496-0500 Dwodpfx Ajzmuqnoqxjb -Voltage: 220 V -Cardboard dimensions: 125/90/H80 mm -Weight: 0.5 kg

Condition: used, “functionally tested; item originates from the dismantling of equipment from an automotive supplier.” Dwedpfx Aqezr Ucusxob Manufacturer: ASO Safety Solutions Type: 41-322 (ELMON relay) Category: Safety evaluation unit / safety relay (ELMON family) Function: Evaluation of safety contact mats, safety edges and bumpers; monitoring of sensor current; support for 4-wire sensors Connections / Operation: Terminals / LED display for status; operating instructions and connection examples in the manual Protection class / Mounting: for control cabinet / inline mounting

Condition: good (used), Leveling device -in: transport case -Dimensions: 240/170/H190 mm -Weight: 3.3 kg Dsdpfx Aqjd Scpdjxjwb

Condition: excellent (used), Tripod, height-adjustable Fitting thread: 1/2" Dodpfxod Ey Abo Aqxswb Weight: 5 kg Includes carrying strap.

Condition: like new (used), The Rotonivo Type RN 4001 rotary paddle level switch, in the cable version, is used for monitoring the level of bulk materials. The device is suitable for use in industrial silo and tank systems and enables reliable level detection. Dwsdpfx Aqezzmr Toxeb Technical data: - On request

Condition: used, Rotating Device Gunter Seibold Rotating Device for HTS Coils – Steplessly Adjustable Drive (Type S05082) Description: Professional rotating device designed for accommodating and rotating HTS coils with a winding core. Developed to ensure even distribution of two-component resin during the curing process. Ideal for development, laboratory, or manufacturing environments working with high-temperature superconductor coils. The winding form is electrically heated, with power supplied directly to the form (not included in the scope of delivery). The machine stands out for its precise control, user-friendly operation, and maintenance-friendly design. Technical Features Solid Machine Base: Welded square tube construction with leveling screws and floor anchors Drive: Three-phase planetary gear motor (11 kW, 400 V, 50 Hz, 3 phases) Steplessly adjustable speed (0.2 – 100 min⁻¹) Soft-start & soft-stop via frequency inverter (4-quadrant controller) Electromagnetic spring-applied brake (safe stop in case of power failure) Dsdpfx Aqjzil R Roxewb Selectable clockwise/counterclockwise rotation Control Panel: 5.7" touch panel for configuring speed, direction, ramps, time, or total rotations Emergency stop button, ergonomically integrated 2 programmable analog inputs Electrics & Control Cabinet: Control system integrated in the machine base 400 V / 230 V supply, 24 V DC control voltage Circuit breakers, RCD 30 mA Sockets: 8× 230 V / 16 A, 2× 400 V / 16 A CEE, 1× 400 V / 32 A CEE Control cabinet with climate control unit Complete grounding & static discharge of the main shaft Adjustable workplace lamp, tiltable and height-adjustable Specifications Feature / Value Max. coil diameter: 1,500 mm Coil passage: 1,700 mm Center height above floor: 1,100 mm Max. load on faceplate: 500 kg Faceplate Ø 600 mm, 4 T-slots (DIN 650) Speed range: 0.2 – 100 min⁻¹ (stepless) Torque: 775 – 539 Nm Operating voltage: 400 V / 50 Hz Control voltage: 24 V DC Connected load: 11 kW Connection current: 32 A Color scheme (according to RAL): Base machine: Blue (RAL 5010) Moving parts: Yellow (RAL 1021) Control panel / cabinet: Light grey (RAL 7035 / 5010) Weight: approx. 1,800–2,000 kg Condition: used Scope of delivery: (see picture) (Subject to change and error in the technical data and information!) We are happy to answer further questions for you by phone.

Condition: used, functionality: fully functional, overall weight: 3,000 kg, operation weight: 3,000 kg, maximum load weight: 3,000 kg, empty load weight: 3,000 kg, loading space volume: 18 m³, loading space width: 2,000 mm, loading space length: 3,000 mm, loading space height: 3,000 mm, Year of construction: 2022, operating hours: 2,000 h, machine/vehicle number: K22092001, ## Complete Nitrogen Generation System – Generator + High-Pressure Booster + Chiller For sale: a complete industrial nitrogen generation and high-pressure supply system, designed for use with high-power fiber laser cutting machines. The system allows nitrogen to be generated on-site and supplied to the laser at the required high pressure, significantly reducing dependence on liquid nitrogen deliveries. ### Complete system includes: * Nitrogen generator * High-pressure nitrogen booster * Industrial chiller / cooling system * Control system * Filtration and necessary system components ### Technical specifications: Nitrogen generator * Nitrogen purity: up to [99.99%] * Nitrogen capacity: [30 Nm³/h] Dsdpfozv T Abox Aqxewb * Outlet pressure: [8 bar] * Automatic operation High-pressure booster * Maximum nitrogen pressure: [200 bar] * Capacity: [25 Nm³/h] * Designed for continuous industrial operation * Suitable for fiber laser cutting applications Chiller * Cooling capacity: [XX kW] * Designed for cooling the nitrogen booster/system * Industrial continuous-duty design ### Application The system was used for supplying nitrogen to a high-power fiber laser cutting machine. Suitable for laser cutting of: * Stainless steel * Aluminum * Carbon steel and other materials where high-pressure nitrogen cutting is required The equipment is sold as a complete system. Condition: Used, fully functional Location: Lithuania Availability: Immediately available The system can be inspected and tested on site. More photos, videos, and detailed technical specifications are available upon request. Worldwide transport can be arranged.

Condition: excellent (used), Vötsch Type: VBT 03/500 Air-cooled Temperature test chamber with spray device Technical description: Data for temperature tests without water: Temperature range -30°C to +80°C Temperature deviation in the stabilized state according to IEC 60068-3-5, depending on the test chamber temperature ± 1 K over time Temperature change rate according to IEC 60068-3-5 Heating: approx. 2 K/min. Cooling: approx. 2 K/min. Data for temperature tests with water Temperature range +5°C to +80°C Possible water level -10 mm to 540 mm Water level = -10 mm The water level is below the support grid Water level = 0 mm The water level is at the top edge of the support grid Data for spray device, standard Number of spray nozzles 6 Spray volume per nozzle 0.5 l/min Data for spray device according to EN 539-2, Method B Number of spray nozzles 6 Dwsdpfxszh D S Re Aqxob Spray volume per nozzle 4.5 l/min Additional flooding nozzles 2 Spray volume additional nozzle 6 l/min Compressed air consumption approx. 3 m³/h Data for water tank with preheating Volume approx. 2000 l Temperature range for preheating +5°C to +40°C Temperature change duration Cooling from +18°C to +5°C approx. 15 h Heating from +15°C to +40°C approx. 10 h Data for installation and operation: Test chamber: Width 1120 mm, Depth 840 mm, Height 540 mm Housing: Width 2700 mm, Depth 1300 mm, Height 1575 mm Water tank: Width 1100 mm, Depth 800 mm, Height 2200 mm Feedthroughs 1 feedthrough ∅ 50 mm, installed on the left Test chamber volume: approx. 500 liters Refrigerant R-404a Electrical connection: Rated voltage 3/N/PE AC 400V ± 10% 50Hz Rated power approx. 26 kW Rated current approx. 44.0 A (neutral conductor loaded) Fuse 63 A gG, on-site Weight approx. 890 kg net For your safety as a buyer, the following information! The following points will be carried out on our offered chambers in advance: 1. Functional check and replacement of necessary components 2. If necessary, refilling with legally compliant refrigerant 3. Leak test with certificate 4. After successful inspection, the chambers will be subjected to a documented test run. Condition: used Scope of supply: (See picture) (Changes and errors in the technical data and specifications are subject to change!) We will gladly answer any further questions you may have over the phone.

Condition: used, Year of construction: 2017, Multi-story press Manufacturer: Bürkle Type: 1428/50 Year of manufacture: 2017 Process description The uncompressed, assembled door elements are transferred from an on-site automatic transport system to the Bürkle press line to be delivered. In the loading basket, the door elements are individually collected on each story. Once the basket is full, the door elements are alternately transported to the upper or lower press chamber of the multi-story press. The upper or lower press chamber of the press is unloaded using the unloading basket, while maintaining the order of the parts. This process represents a continuous cycle without waiting times, as the upper and lower press chambers are alternately loaded and unloaded. The collecting function of the loading basket is equipped with a timer: if the set maximum waiting time for uncompressed door blanks is reached, the press is automatically loaded, even if there are fewer than the maximum possible number of door blanks. Loading basket (4 stories) The basic structure is a bolted/welded construction made of steel profile tubes. The lifting basket with its 4 transport levels can be moved vertically between the two lifting columns and is guided by special plastic rollers. The vertical movement of the lifting basket is carried out by a lifting mechanism with a frequency-controlled electric geared motor with brake. The lifting mechanism is mounted on the lifting columns. The 4 transport levels consist of belt conveyors and serve to gently transport the uncompressed material into the press. Technical data Number of stories: 4 Conveyor belt: PVC Drive: Electric geared motor (frequency-controlled) Transport length: 3000 mm Transport width: 1400 mm Story spacing: 210 mm Overall height: ~ 4200 mm Infeed/transfer height I: 900 mm Infeed/transfer height II: ~1,400 mm Optima press 1428 / 50 (2 x 4 stories) Dwodpozzcqlefx Aqxjb The basic structure of the press consists of several uprights and three press tables, with the middle press table being fixedly mounted on the uprights. Both the upper and lower press tables are arranged so that they can be moved vertically relative to the middle press table. The movable press tables are each equipped with a synchronizing mechanism and an integrated safety system. This configuration creates an upper and a lower press chamber. In these press chambers, the heating plates are movably suspended via a tie rod system, thus forming the individual stories. The opening and closing of the press chambers is carried out by hydraulic cylinders that are attached to cylinder suspension points. Each story is equipped with a separate transport film drive, via which the workpieces are fed in and out. The exact movement of the film is ensured by an electro-pneumatic film guide and tensioning device. The heating plates consist of steel plates that have been machined on all sides. These are equipped with channels that have been drilled from solid for the circulation of the heating medium and additional transverse channel bores for ventilating the film. All essential screw surfaces of the press tables are face-milled and fitted with keyed connections. The pressing pressure and pressing time can be individually controlled for each chamber. Technical data Heating plate length: 2,800 mm Heating plate width: 1,400 mm Maximum workpiece length: 2,500 (2,600) mm Maximum workpiece width: 1,250 mm Heating plate thickness: 70 mm Number of chambers: 2 Number of stories per chamber: 4 Story spacing: 210 mm Number of

Condition: new, Year of construction: 2025, Clean air dust extractor RLA 160 For wood dust and shavings, designed for commercial use Article number: 5131620 Brand: Holzkraft For wood shavings and wood dust. Designed for commercial use. All clean air extraction systems in this series are dust-tested according to H3, with a residual dust content of less than 0.1 mg/m³. High extraction performance with a small footprint. Maximum performance in this class. Very quiet. Application area: Clean air extraction systems for wood shavings and wood dust. Designed for commercial use. For all woodworking machines with a corresponding extraction port diameter. Also suitable for multiple dust sources. High-quality, well-designed construction. Robust and compact housing made of galvanized sheet steel. Dsdpjcnw T Ijfx Aqxjwb Extraction port can be easily repositioned from left to right, allowing for flexible use. Large inspection openings. Large, mobile chip collection containers with clamping bracket and chip collection bag. System is fully assembled upon delivery, allowing for quick deployment. Mobile. Description of the filter: Ultra-compact with maximum filter area. Filter material made of polyester fleece, aluminum-coated, washable, and therefore with a long service life. Filter is standardly tested and approved in antistatic design according to category M-BIA. Filter resistance monitoring via differential pressure sensor, adjustable with warning light on the control panel. The fan is located downstream of the filter. Equipment details: With a novel locking device for secure container positioning. All systems in this series are dust-tested according to H3, with a residual dust content of less than 0.1 mg/m³. Scope of delivery: Metal fan impeller Inspection opening for cleaning the bypass filter Connection cable 5 m with CEE plug 5-pin and phase reverser 2 swivel casters and 2 fixed casters with parking brake Manual cleaning Model: RLA 160 Article No.: 5131620 Technical data: Intake port diameter: 160 mm Nominal air flow: 1448 m³/h Max. air flow: 2400 m³/h Negative pressure at Vnenn: 2247 Pa Filter area: 9.21 m² Filter material: Dust class M Residual dust content: H3 (< 0.1 mg/m³) Filter cleaning: Compressed air supply: Chip collection volume: 2 x 193 l Supply voltage: 400 V Supply frequency: 50 Hz Motor power: 2.2 kW Sound pressure level max.: 73 dB(A) Dimensions (length x width x height): 1681 x 830 x 1654 mm Weight: 254 kg Location: Available from stock in 54634 Bitburg.

Condition: as good as new (ex-display), Year of construction: 2025, For wood chips and wood dust. Designed for commercial use. All clean air extraction systems in this series are dust-tested according to H3, with a residual dust content of less than 0.1 mg/m³. High extraction performance with a small footprint. Maximum performance in this class. Very quiet. Application area: Clean air extraction systems for wood chips and wood dust. Designed for commercial use. For all woodworking machines with a corresponding extraction port diameter. Can also be used for multiple dust sources. High-quality, well-designed construction. Robust and compact housing made of galvanized sheet steel. Extraction port can be easily repositioned from left to right, allowing for flexible use. Large inspection openings. Large, mobile chip containers with clamping bracket and chip collection bag. The system is fully assembled upon delivery, allowing for quick deployment. Mobile. Filter description: Ultra-compact with maximum filter area. Filter material made of polyester fleece, aluminum-coated, washable, and therefore with a long service life. Filter is standard and tested and approved in antistatic design according to category M-BIA. Filter resistance monitoring via differential pressure sensor, adjustable with a warning light on the control panel. The fan is located downstream of the filter. Equipment details: With a new locking device for secure container positioning. All systems in this series are dust-tested according to H3, with a residual dust content of less than 0.1 mg/m³. Scope of supply: Metal fan impeller. Inspection opening for cleaning the bypass filter. Connection cable 5 m with CEE plug 5-pole and phase inverter. 2 swivel castors and 2 fixed castors with parking brake. Preparation for connection of machine detection for up to 8 machines and slide valve controls. Manual cleaning. Sound pressure attenuator available as an accessory. Model: RLA 125 M Article no.: 5131256 Technical data Extraction port diameter: 125 mm Motor power: 2.2 kW Mains voltage: 400 V Dwjdpfx Aqocnw U Djxeb Mains frequency: 50 Hz Nominal volume flow: 1095 m³/h Max. volume flow: Vacuum at Vnenn: Filter area: 5.31 m² Filter material: Dust class M Residual dust content: 0.1 mg/m³ Chip collection volume: 1 x 239 l Max. sound pressure level: 73 dB(A) Dimensions (L x W x H): 1100 x 830 x 1650 mm Height from the lower edge of the extraction port to the ground: 850 mm Weight: 194 kg Location: Arriving at warehouse 54634 Bitburg.

Condition: good (used), functionality: fully functional, Offered is a hygiene sluice/disinfection sluice by Blue Level DLSO 2000. 400V, 16A. Complete V2A stainless steel construction. New brush rollers. Dimensions (L x W x H): 273x95x177 cm. Immediately ready for use, fully operational. Further information upon request. Payment in cash or advance payment. Sale only to commercial customers. No warranty or guarantee. Dwsdpfx Ajynkh Teqxeb

Condition: good (used), Level limit switch, level measuring device, sensor, switch, level transmitter, limit level detector, limit switch, level switch, level sensor -Manufacturer: Endress+Hauser, boundary level detector set, unused, original packaging -Type: Soliphant T FTM20-AG22A -Quantity: 1 detector available -Dimensions: 370/86/100 mm -Weight: 1.2 kg Dwjdpjzl Agbjfx Aqxjb

Condition: good (used), Level limit switch, level measuring device, sensor, switch, level transmitter, limit level detector, limit switch, level switch, level sensor -Manufacturer: Endress+Hauser, boundary level detector set, unused, original packaging -Type: Liquiphant FTL31-11V0/0 -Quantity: 1 detector available -Cardboard dimensions: 300/120/H115 mm Dedozkq Tmepfx Aqxowb -Weight: 0.5 kg

Condition: ready for operation (used), Year of construction: 2007, Stiefelmayer Brivisor KL-4 Hardness Testing Machine Testing height: 150 mm (with testing table) Outreach: 200 mm Device footprint: 560 mm x 250 mm x 770 mm (W x D x H) Load range: 0.05 - 10 kgf Weight: approx. 45 kg Year of manufacture: 2007 Vickers: HV 0.1 | 0.3 | 0.5 | 1 | 2 | 3 | 5 | 10 Brinell: HBW 1/5 and HBW 1/10 You are welcome to visit us for an inspection. Dedpfezzynhjx Aqxswb We can also arrange cost-effective shipping for you! You will receive a proper invoice. For foreign customers, a net invoice can also be issued. A valid VAT identification number is required. Subject to prior sale. Visit our shop and view our other offers. The company names and trademarks mentioned are the property of their respective owners and are used solely for identification and description of the products. Deviations in technical data as well as errors in the description of the article may occur and are subject to change.

Year of construction: 2000, condition: excellent (used), High Level Stainless Steel Conveyor Dimensions - Belt 2060mm high from floor Belt length 1400mm Dwedon R Sw Djpfx Aqxjb Side infeed 460mm wide Belt width 300mm

Condition: good (used), Level limit switch, level measuring device, sensor, switch, level transmitter, limit level detector, limit switch, level switch, level sensor Dwsdezl Agujpfx Aqxob -Manufacturer: Endress+Hauser, boundary level detector set, unused, original packaging -Type: Soliphant II FTM30-A1DA1 -Quantity: 1 detector available -Dimensions: 370/120/110 mm -Weight: 1.5 kg

Condition: good (used), Level limit switch, level measuring device, sensor, switch, level transmitter, limit level detector, limit switch, level switch, level sensor Dwodozmq Nyopfx Aqxeb -Manufacturer: Endress+Hauser, boundary level detector set, unused, original packaging -Type: Soliphant II FTM30-A2AA1 -Quantity: 1 detector available -Dimensions: 360/125/105 mm -Weight: 1.6 kg

Condition: good (used), For sale is a universal length measuring device with numerous accessories from the brand Helios, in good, used condition, as can be seen in the pictures. Technical data: • Manufacturer: Helios Messtechnik • Type: 27 773 001 • Control model: Unitron 2 CHA • Universal length measuring device / adjustment device / shaft measuring device • With numerous accessories for various measurements • Mounted on a workshop trolley with contents (See pictures) • Condition: Used, functional (The cable or connector of the control unit would need to be replaced, presumably not original; the display turns off after a few seconds) Shipping costs via freight forwarder: approx. €140 International buyers are welcome! You will receive an invoice with VAT shown. Inspection / collection is possible by arrangement in 42855 Remscheid. Dwjdpozxiv Nefx Aqxjb Sale from location 42855 Remscheid, free on board. Subject to errors in technical data and prior sale.

Condition: good (used), functionality: fully functional, For sale is a used nailing machine from the manufacturer Bohm & Kruse, designed for the production and assembly of wooden crates. The machine is specifically designed for nailing crate parts and also features a riveting device. For safety reasons, the machine is enclosed and equipped with a two-hand control. Technical data / equipment: Manufacturer: Bohm & Kruse Machine type: Crate nailing machine / Nailing machine For nailing crate parts Riveting device available Multi-nailing head Workpiece support / workbench Adjustable workpiece stops Safety enclosure with protective grille included Two-hand control Emergency stop Robust industrial design The machine is in used condition. Equipment and condition as shown in the photos. Dodezym Nijpfx Aqxowb Transport is possible for an additional charge! The machine is currently still at the customer's site but would be available in the short term! The machine will be inspected before sale. For used machines with a year of manufacture of 2009 or earlier, the warranty is excluded when sold to commercial customers. Technical data and equipment may vary. Errors, prior sales and changes are subject to change. All information without guarantee.

Condition: not inspected (used), Mitutoyo Quick Vision Apex QV-X404P1L-C CNC Image Processing Measuring Machine / Optical Measuring System Manufacturer: Mitutoyo Corporation Type: QV-X404P1L-C Code No.: 363-131EU Professional CNC image measuring system for non-contact dimensional measurement tasks. For sale is a used Mitutoyo Quick Vision Apex CNC image processing measuring machine, including the existing PC system, two monitors, control unit, measuring software, and extensive documentation. The existing PC system and the installed QVPAK software start. However, the complete machine and measuring function could not be fully tested. The Quick Vision series is used for non-contact dimensional measurement of workpieces using an optical system, image acquisition, and image processing. Suitable for precise measuring and testing tasks, including those involving components from the electronics, precision mechanics, and industrial manufacturing sectors. Technical data: Manufacturer: Mitutoyo Corporation Model: Quick Vision Apex Type: QV-X404P1L-C Code No.: 363-131EU Country of manufacture: Japan Machine type: CNC image processing measuring machine Measuring range X / Y / Z: approx. 400 × 400 × 250 mm Measuring principle: non-contact optical image measurement CNC-controlled measuring system Existing measuring software: Mitutoyo QVPAK QVPAK (R): Version 7.502.0010 QVGEO: Version 7.502.0010 Statistics: Version 7.502.0010 Equipment: Mitutoyo Quick Vision Apex measuring machine PC workstation Fujitsu Siemens CELSIUS PC system 2 Fujitsu monitors Keyboard and mouse Mitutoyo control unit / joystick with emergency stop QVPAK measuring software Mitutoyo MCOSMOS / MiCAT data carrier GEOPAK documentation QVPAK documentation Other Mitutoyo operating manuals and documents Clamping plate / workpiece fixture as shown in the picture Connecting cables and accessories as shown in the picture Application areas: Optical dimensional inspection Non-contact workpiece measurement Quality assurance Dodpoztyabsfx Aqxewb Precision measurement technology Component and contour inspection Manufacturing and process control Scope of delivery: Mitutoyo Quick Vision Apex QV-X404P1L-C with PC workstation, monitors, control unit, existing software, documentation, and accessories as shown in the pictures. Scope of delivery is limited to what is shown in the pictures. Condition: Used Optical condition according to the pictures PC system and existing QVPAK software start. Signs of wear and tear due to age and use are present. Visible damage / signs of wear are present on the machine housing, see pictures. Important note: The machine has not been tested because it is in a protection mode after being moved. This is also intended by the manufacturer during machine transport. The machine must be put back into operation by qualified Mitutoyo personnel. Shipping by freight forwarder is possible. Subject to changes, errors, and prior sale. We are happy to answer any further questions by telephone.

Year of construction: 2011, condition: excellent (used), The lifting and tilting device includes the undercarriage of the traveling carriage, the control cabinet, the vibrator, and the lifting and tilting device itself. The centrifuge is not included in the scope of delivery. Dedpezwdn Rofx Aqxewb Performance specifications, including the centrifuge: Current: 59 A, Power: 28 kW, 50 Hz.

Condition: ready for operation (used), Assfalg ASO 650 S Edge Milling Machine, Chamfering Machine, Deburring Machine Maximum chamfer width: 0-7mm Dwsdpszy E D Sofx Aqxjb Angle adjustment: 15°-45° Dimensions: approx. 400 × 500 × 300 mm Weight: approx. 52 kg Radius [mm]: 1.2 | 2 | 2.5 | 3 | 4 | 6 You are welcome to visit us for an inspection. We can gladly arrange cost-effective shipping for you! You will receive a proper invoice. For foreign customers, a net invoice can also be issued. A valid VAT identification number is required. Subject to prior sale. Visit our shop and check out our other offers. The company names and trademarks mentioned are the property of their respective owners and are used solely for identification and description of the products. Deviations in technical data as well as errors in the description of the item may occur and are subject to change.

Condition: ready for operation (used), Schunk Tribos SVP2 Clamping Device – Quick-Change System You are welcome to visit us for a demonstration. We would be happy to arrange cost-effective shipping for you! You will receive a proper invoice. For foreign customers, a net invoice can also be issued. A valid VAT identification number is required. Subject to prior sale. Dsdezyrczopfx Aqxjwb Visit our shop and browse our other offers as well. The company names and trademarks mentioned are the property of their respective owners and are used solely for identification and description of the products. Deviations from technical data and errors in the description of the item may occur and are subject to change.

Condition: good (used), functionality: fully functional, The hot runner system from PSG is for sale; Type: profiTEMP+12 Power: 22 kW Dsdpfjzu I A Hsx Aqxewb Includes wiring diagram 12-cavity system