Technical Specifications Breakdown
Key parameters for the 21000-28-05-00-40-03-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Model | 21000 Proximity Probe Housing Assemblies |
| Probe Option | 28 3300 XL 8 mm probe, selectable hazardous area approvals |
| Probe Cable Length | 0.5 m (20 in) |
| Probe Penetration | 4.0 in |
| Mounting Thread | 3/4-14 NPT |
| Fitting Option | One 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, one cable seal grip with grommets |
| Material | Aluminum body with 304 stainless steel sleeve |
| Weight | 1.1 kg (2.4 lb) typical, without fittings |
| Maximum (C) + (D) Dimension | 13.5 in (34.3 mm) |
| Certification | CSA explosion-proof, Class I Divisions 1 and 2 Groups C and D, Class II Divisions 1 and 2 Groups E, F, G, Class III, Enclosure Type 4, T5 @ Ta = -50°C to +40°C, T4 @ Ta = -50°C to +80°C |
Industry Applications for the 21000 Housing Assembly
This housing assembly is engineered for continuous vibration monitoring on compressors, turbines, pumps, and fans in oil and gas, petrochemical, and power generation facilities. The 21000-28-05-00-40-03-02 is particularly suited for Class I Division 1 areas where explosive gases or dusts are present. Its CSA Type 4 enclosure rating ensures protection against water ingress and corrosion, reducing unplanned downtime. By integrating a 3300 XL 8 mm probe, it provides accurate shaft relative vibration measurements, helping operators detect early signs of bearing wear or imbalance.
Installation & Setup Guidance
When installing the 21000-28-05-00-40-03-02, ensure the mounting thread (3/4-14 NPT) is properly sealed with thread sealant to maintain the explosion-proof integrity. The probe cable length of 0.5 m (20 in) requires careful routing to avoid sharp bends. The included cable seal grip accommodates cable diameters from 1/8 to 3/8 inches. For intrinsically safe applications, verify that the circuit is connected per drawing 140979 to maintain non-incendive operation. Always follow the manufacturer's torque specifications for the dome cover and fittings.
Maintenance & Reliability
Periodic inspection of the housing assembly is recommended to check for physical damage, corrosion, or loose fittings. The aluminum body with 304 stainless steel sleeve offers resistance to corrosive environments. The O-rings should be inspected during routine maintenance to ensure a proper seal. The assembly is rated for ambient temperatures from -50°C to +80°C (T4 rating), making it suitable for extreme conditions. No internal disassembly is required for routine checks.
Compatibility & Integration
The 21000-28-05-00-40-03-02 is fully compliant with the American Petroleum Institute's API 670 Standard for externally mounted proximity probe housings. The 3300 XL 8 mm probe is a standard choice for shaft vibration and position measurements. The housing supports both hazardous area approved probes for intrinsically safe applications and standard configurations.
Selection Guide & Purchasing Advice
When selecting the 21000-28-05-00-40-03-02, confirm that the probe penetration (4.0 in) and mounting thread (3/4-14 NPT) match your machine's requirements. The standoff adapter option is not used in this configuration (00). For North American end users requiring CSA certification, this assembly is ready to deploy. AutoDCSTech stocks this unit as new and original in factory packing with a 12-month warranty. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 21000-28-05-00-40-03-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
