21000-34-05-15-029-04-02

FAQS

• What are Proximity Probe Housing Assemblies?
  Bently Proximity Probe Housing Assemblies are components manufactured by Bently Nevada for protecting and mounting proximity probes, widely used in industrial machinery monitoring.
• What is the specific physical configuration of 21000-34-05-15-029-04-02?
  This model is an aluminum protective cover with a pre installed 3300 XL 8mm probe inside. Its key dimensions include a 0.5m probe cable, a 1.5-inch Standoff Adapter, and a 2.9-inch probe penetration depth, with installation thread specifications of 3/4-14 NPT.
• Why choose models with
  This model includes a 1.5-inch bracket adapter, typically used to avoid obstacles on the surface of the machine casing (such as reinforcing ribs, bolts, or other pipelines), or to adjust the installation space through the bracket when the total length of the probe sleeve exceeds the standard range.
• Does this protective cover comply with industrial safety standards?
  Yes. It fully complies with the API 670 standard, which is the authoritative requirement for rotating machinery protection systems in the global petroleum, petrochemical, and natural gas industries. Meanwhile, the "-34" option in the model indicates that it has multiple hazardous area certifications (such as CSA, ATEX, IECEx, etc.) and is suitable for explosion-proof environments.
• If the internal probe is damaged, is it necessary to replace the entire protective cover component?
  No need. One of the design advantages of the 21000 series is its on-site maintainability. You can replace the internal 'Sleeve Probe' separately without removing the entire aluminum casing, and even adjust the probe gap without shutting down the machine.
• What is the difference between the 21000 series (aluminum) and the 24701 series (stainless steel)?
  21000 (this model): Made of die cast aluminum material, it is lightweight and cost-effective, suitable for most conventional industrial environments. 24701: Made of 303 stainless steel material, it has stronger corrosion resistance and is specifically designed for highly corrosive environments such as high salt spray or strong acidity and alkalinity.
• Is the aluminum casing (21000 series) durable in harsh environments?
  Although aluminum casing is lighter and more cost-effective than stainless steel, it has a Type 4 sealing rating. As long as the environment does not contain strong acids, strong alkalis, or extremely high salt spray (such as offshore platforms), its die cast aluminum material is sufficient to meet the outdoor working conditions of most refineries, chemical plants, and power plants.