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  3. Oil level gauges - Caps - Screw plugs - Vent screws - Filler necks

Oil level gauges - Caps - Screw plugs - Vent screws - Filler necks

Oil level gauges - Caps - Screw plugs - Vent screws - Filler necks
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Oil level gauges - Caps - Screw plugs - Vent screws - Filler necks

Product catalog summary
Overview: The document provides comprehensive specifications and assembly instructions for various models of oil level gauges, including those with electronic monitoring capabilities. It is organized into sections covering materials, versions, sample orders, notes, and assembly instructions for different product versions.
Specifications:
  • Materials: Gauges are constructed from thermoplastic polyamide, aluminium, and polycarbonate, with NBR rubber used for O-rings and flat seals.
  • Versions: Describes different versions of oil level gauges, including models with and without thermometers, and those with electronic oil level and temperature monitoring.
  • Temperature and Pressure: Maximum operating temperatures range from 75°C to 100°C, with pressure resistance up to 10 bar at 20°C.
Procedures:
  • Assembly: Gauges are secured using M12 tapped holes or flange nuts, with specific center distances for fastening holes provided.
  • Functionality: Some models include a float element with a magnet that activates an electrical contact when a certain oil level is reached, emitting an electrical signal.
Recommendations:
  • Avoid contact with alcoholic solutions and hot water to maintain the integrity of the sight glass.
  • Ensure that strong magnetic fields do not impair the function of the gauges.
Notes:
  • Sample orders are provided for each model, indicating specific order numbers and configurations.
  • Drawing references are included for assembly and component identification.
Norms and Standards: The document references DIN standards for screw plugs, indicating compliance with specific threading and material requirements. Electro zinc-plating is a common finish for steel components.
Key Data from Tables: Tables provide detailed dimensions and specifications for various order numbers, including measurements for diameter, length, and tightening torque. For example, order number 28001-12-1300 specifies a normally open contact with dimensions 30x39 M12 and a maximum tightening torque of 5 Nm.
Critical Information: Ensure correct installation of components to prevent mechanical damage. Magnetic screw plugs are designed to attract iron particles, reducing potential damage to mechanical components. Adhering to specified temperature and pressure limits is crucial to maintain functionality.
Additional Components:
  • Screw Plugs: Made from aluminium and thermoplastic polyamide 66, available in different thread sizes with flat seal asbestos-free versions.
  • Vent Screws: Made from thermoplastic polyamide 66, brass, and stainless steel, featuring splash guards, check valves, and air filters.
  • Filler Necks: Made from chrome steel, polyamide 66, and polypropylene, suitable for high flow rates and controlled airflow applications.
General Notes: All components are designed to be temperature resistant with oil up to 100°C, with additional features like vent holes, dipsticks, and removable caps for easy maintenance.
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Catalog excerpts

Oil level gauges - Caps - Screw plugs - Vent screws - Filler necks-1

Oil level gauges Caps Plugs Vent screws Dipsticks Filler necks

 Open the catalog to page 1
Oil level gauges - Caps - Screw plugs - Vent screws - Filler necks-2

Material: Housing thermoplastic polyamide. O-ring and flat seal rubber (NBR). Reflector aluminium. Screw and hex nut steel. Version: Transparent housing, high mechanical stability, non-ageing, temperature resistant up to 100 °C. Pressure resistant at 20 °C up to 10 bar, at 60 °C up to 8 bar. Reflector painted white, line marks and scale black. Screw and hexagon nut, electro zinc-plated. Note: The oil level gauges can either be fastened as shown in the illustration or screwed directly into a tapped hole. Centre distance for the fastening holes = L1 ±0.3. The max. tightening torque for the fastening...

 Open the catalog to page 2
Oil level gauges - Caps - Screw plugs - Vent screws - Filler necks-3

Material: Housing steel. Viewing glass thermoplastic polyamide. O-ring and flat seal rubber (NBR). Reflector aluminium. Screw and hex nut steel. Version: Housing painted black. Transparent viewing glass, high mechanical stability, non-ageing, temperature resistant with oil up to 100 °C, with water up to 70 °C. Reflector painted white, markings and scale black. Screw and hexagon nut, electro zinc-plated. Note: The oil level gauges can either be fastened as shown in the illustration or directly in the threaded hole. Centre distance for the fastening holes = L1 ±0.5. The oil level gauges are suitable...

 Open the catalog to page 3
Oil level gauges - Caps - Screw plugs - Vent screws - Filler necks-4

28000-10 Oil level gauges with electronic oil level monitoring Material: Housing fibreglass reinforced thermoplastic polyamide. Sight glass thermoplastic polyamide. O-ring and flat seal NBR. Reflector PVC. Float plastic. Screw and nut, steel. Version: Housing black. Sight glass crystal clear, high mechanical stability, non-ageing. Reflector white. Float red, with magnetic element. Screw and nut electro zinc-plated. Function: The oil level is measured using a float element with a magnet that activates the electrical contact when the REED level switch is reached. If the oil level falls below a...

 Open the catalog to page 4
Oil level gauges - Caps - Screw plugs - Vent screws - Filler necks-5

Oil level gauges with electronic temperature monitoring Version: Housing black. Sight glass crystal clear, high mechanical stability, non-ageing. Reflector white. Screw and nut electro zinc-plated. Material: Housing fibreglass reinforced thermoplastic polyamide. Sight galss thermoplastic polyamide. O-ring and flat seal NBR. Reflector PVC. Screw and nut, steel. Drawing reference: 1) Inspection glass 2) O-ring 3) M12 flange nut 4) Housing 5) Flat seal 6) Temperature sensor 7) M12 hollow screw Note: In addition to a visual check, the oil level gauges can also emit an electric signal if the temperature...

 Open the catalog to page 5
Oil level gauges - Caps - Screw plugs - Vent screws - Filler necks-6

28000-12 Oil level gauges with electronic oil level and temperature monitoring H Material: Housing fibreglass reinforced thermoplastic polyamide. Sight glass thermoplastic polyamide. O-ring and flat seal NBR. Reflector PVC. Float plastic. Screw and nut, steel. Version: Housing black. Sight glass crystal clear, high mechanical stability, non-ageing. Reflector white. Float red, with magnetic element. Screw and nut electro zinc-plated. Sample order: nlm 28000-12-112712 Note: The oil level gauge not only enables the oil level to be viewed but also recorded using a REED switch. In addition, the oil...

 Open the catalog to page 6
Oil level gauges - Caps - Screw plugs - Vent screws - Filler necks-7

28001 Oil level gauges long version H1 Material: Housing aluminium. Tube polycarbonate. Caps polyamide. O-ring and flat seal NBR, Shore 70. Screw and hex. nut steel. Version: Viewing glass transparent. Screws and nuts electro zinc-plated. Note: The oil level gauges can either be fastened as shown in the illustration or directly in the tapped hole. Centre distance for the fastening holes = L1±0.3. The maximum operating temperature is 90 °C. The maximum pressure is 1 bar. The maximum tightening torque of the fastening screws is 5 Nm. Drawing reference: 1) flat seal 2) O-ring

 Open the catalog to page 7
Oil level gauges - Caps - Screw plugs - Vent screws - Filler necks-8

28001-10 Oil level gauges with electronic oil level monitoring, long version 2 Material: Housing aluminium. Tube polycarbonate. Caps polyamide. O-ring and flat seal NBR. Reflector PVC. Float plastic. Screws and nuts, steel. Version: Sight glass crystal clear. Reflector white. Float red, with magnetic element. Screws and nuts electro zinc-plated. Sample order: nlm 28001-10-300 Note: The oil level gauge not only enables the oil level to be viewed but also recorded using a REED switch. If the float element reaches the selected minimum value after the circuit has been closed, the system emits an...

 Open the catalog to page 8
Oil level gauges - Caps - Screw plugs - Vent screws - Filler necks-9

Oil level gauges with electronic temperature monitoring, long version H1 Material: Housing aluminium. Tube polycarbonate. Caps polyamide. O-ring and flat seal NBR. Reflector PVC. Screws and nuts, steel. Version: Sight glass crystal clear. Reflector white. Screws and nuts electro zinc-plated. Sample order: nlm 28001-11-1300 Note: In addition to a visual check, the oil level gauges can also emit an electric signal if the temperature of the liquid inside the container reaches the threshold of 70 °C. The temperature is monitored by a temperature switch (bi-metal). When the specified temperature is...

 Open the catalog to page 9
Oil level gauges - Caps - Screw plugs - Vent screws - Filler necks-10

28001-12 Oil level gauges with electronic oil level and temperature monitoring, long version 2 Version: Sight glass crystal clear. Reflector white. Float red, with magnetic element. Screws and nuts electro zinc-plated. Material: Housing aluminium. Tube polycarbonate. Caps polyamide. O-ring and flat seal NBR. Reflector PVC. Float plastic. Screws and nuts, steel. Sample order: nlm 28001-12-1300 Note: The oil level gauge not only enables the oil level to be viewed but also recorded using a REED switch. In addition, the oil level gauges can also emit an electric signal if the temperature of the liquid...

 Open the catalog to page 10
Oil level gauges - Caps - Screw plugs - Vent screws - Filler necks-11

with electronic oil level and temperature monitoring, long version Attention: Strong magnetic fields can impair function. Drawing reference: 1) Sight glass 2) O-ring 3) M12 flange nut 4) Plastic end cap 5) Flat seal 6) M12 hollow screw 7) Float with magnet 8) Reed switch 9) Temperature sensor 10) Aluminium housing Number of fastening screws normally open contact normally closed contact 30 normally open contact normally closed contact 30 normally open contact normally closed contact 30

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.