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21000-28-05-00-075-01-02

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The 21000-28-05-00-075-01-02 is a 21000 Series Proximity Probe Housing Assembly designed for use with 3300 XL 8 mm probes with selectable hazardous area approvals.
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Technical specifications for 21000-28-05-00-075-01-02

  • Manufacturer:
    Bently Nevada
  • Part Number:
    21000-28-05-00-075-01-02
  • Product Family:
    21000, 24701, and 164818 Proximity Probe Housing A
  • Product Type:
    21000 Series Proximity Probe Housing Assembly
  • Compatible Probe:
    3300 XL 8 mm probe with selectable hazardous area approvals
  • Probe Cable Length:
    0.5 m (20 in)
  • Standoff Adapter:
    None
  • Probe Penetration:
    7.5 in
  • Mounting Thread:
    3/4-14 NPT
  • Fittings Included:
    One 3/4-14 NPT explosion-proof fitting; One 3/4-14 NPT plug
  • Housing Material:
    Aluminum
  • Agency Approvals:
    CSA (explosion-proof for hazardous areas)
  • Enclosure Rating:
    CSA Type 4
  • Standard Compliance:
    API 670
  • Key Benefit:
    Model 21000-28-05-00-075-01-02 is fully API 670 compliant for petroleum industry applications and features a single explosion-proof fitting for simplified installation.
  • Weight:
    1.05 kg
  • Estimated shipping dimensions:
    30.5x8.5x8.5cm
  • Tariff Code:
    8479899990
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Application Application Scenarios Performance

Features:

  • 7.5-inch probe penetration provides deep reach for mounting through thick machine casings, insulation layers, or double-walled equipment.
  • CSA explosion-proof certification with CSA Type 4 enclosure rating ensures reliable operation in hazardous areas with protection against water and dust ingress.
  • Single explosion-proof fitting with plug simplifies installation while maintaining hazardous area integrity for deep mounting applications.
The 21000-28-05-00-075-01-02 is engineered for installations where the probe must reach deep into the machine to encounter the measurement target. Its 7.5-inch probe penetration allows it to pass through thick turbine casings, heavy compressor walls, insulation layers, or double-walled equipment without requiring standoffs or custom adapters.

The 21000-28-05-00-075-01-02 carries CSA explosion-proof certification and is rated as a CSA Type 4 enclosure, providing verified protection against both explosive atmospheres and environmental ingress. This dual certification simplifies compliance for installations in North American hazardous locations while ensuring the housing can withstand washdowns, rain, and dust exposure.

The 21000-28-05-00-075-01-02 is designed with a single 3/4-14 NPT explosion-proof fitting for cable entry and a separate plug for sealing the unused port. This configuration simplifies installation by reducing the number of fittings that must be managed during field wiring, while still providing the flexibility to use either port as needed.

The 21000-28-05-00-075-01-02 Bently Nevada Proximity Probe Housing Assemblies may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

Bently Nevada 21000-28-05-00-075-01-02 Proximity Probe Housing Assemblies Manuals, Datasheets, Drivers, Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Bently Nevada 21000-28-05-00-075-01-02 Proximity Probe Housing Assemblies Specs

General

  • Manufacturer GE / Bently Nevada
  • Model 21000-28-05-00-075-01-02
  • Condition New Original ready stock
  • Product Family 21000-30-05-00-075-01-02,21000-31-05-00-075-01-02
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Energy and Power Generation: Widely used in thermal, hydroelectric, and nuclear power plants for monitoring key steam turbines and generator units.
  • Oil and Natural Gas: Suitable for rotating equipment in upstream extraction, midstream transportation (compressurization stations), and downstream refining plants.
  • Chemicals and Heavy Industry: Monitors large reactor agitators or high-pressure pumps in highly corrosive, flammable, and explosive chemical processes.
  • Standards and Compliance: Specifically designed for industrial facilities that must comply with API 670 (American Petroleum Institute for Mechanical Protection Systems) standards.
  • Online Maintenance and Adjustment: When machinery is running (without stopping) but requires recalibrating the probe gap or replacing a damaged probe.
  • Space-Confined Internal Monitoring: Bearing housings with extremely limited internal space, making it impossible to directly install internal mounting brackets.
  • Precision Measurement in Harsh Environments: Equipment exposed to outdoor, high humidity, or spray environments.
  • Explosion-Proof Safety Control Areas: Class I, Div 1, or Zone 0/1 areas with a risk of flammable gas leakage.
  • Structural Durability: Utilizing an aluminum body and 304 stainless steel casing, it offers excellent industrial environmental resistance while providing a lightweight design (approximately 1.1 kg).
  • No Downtime for Replacement: Designed to allow operators to directly replace probes or adjust clearances from outside the machine, significantly reducing unplanned downtime.
  • Sealed Protection: CSA Type 4 rated, dustproof and waterproof, ensuring internal sensor signals are not affected by external contamination.
  • Probe Compatibility: Built-in 3300 XL 8mm probe (code -28) provides high-precision analog voltage output.
Description
The 21000-28-05-00-075-01-02 features a rugged aluminum housing designed for use with 3300 XL 8 mm probes with selectable hazardous area approvals. This model includes a 0.5 m (20 in) probe cable length, no standoff adapter, and 7.5 in probe penetration for deep positioning in critical machinery applications.

The 21000-28-05-00-075-01-02 is CSA approved as explosion-proof for hazardous areas and certified as a CSA Type 4 enclosure, ensuring reliable operation in demanding environments. This 21000 series assembly is fully compliant with the American Petroleum Institute's API 670 Standard for externally mounted proximity probe housings.

The 21000-28-05-00-075-01-02 provides robust protection for 3300 XL 8 mm probes while maintaining accessibility for installation and maintenance. With no standoff adapter and 7.5 in probe penetration, this housing assembly offers deep reach for applications requiring probe placement far from the mounting surface.

The 21000-28-05-00-075-01-02 represents a complete solution for externally mounted proximity probe installations in hazardous areas requiring deep probe penetration. This assembly addresses the pain point of deep mounting applications with 7.5 in probe penetration while maintaining CSA explosion-proof certification.
Alternative Names
21000-30-05-00-075-01-02 21000-31-05-00-075-01-02 21000-32-05-00-075-01-02 21000-33-05-00-075-01-02
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the probe penetration depth of the 21000-28-05-00-075-01-02?
The assembly provides 7.5 inches of probe penetration, making it ideal for applications with thick machine casings, insulation layers, or double-walled equipment.
What hazardous area approvals does this housing carry?
It is CSA approved as explosion-proof for hazardous areas and certified as a CSA Type 4 enclosure, providing protection against water and dust ingress.
What fittings are included with this assembly?
The assembly includes one 3/4-14 NPT explosion-proof fitting for cable entry and one 3/4-14 NPT plug for sealing unused ports.
Is this assembly compliant with API standards?
Yes, the 21000-28-05-00-075-01-02 is fully compliant with the American Petroleum Institute's API 670 Standard for externally mounted proximity probe housings.