Industrial-Grade Protection for Demanding Environments
The Bently Nevada 21505-04-12-90-02 7200 8 mm Standard Mount Armored Probe is purpose-built for rotating machinery operating in mechanically aggressive and high-risk industrial settings. As part of the proven 7200 Series, this armored 8 mm proximity probe is engineered to deliver stable, repeatable vibration and shaft position measurements — even where mechanical damage, abrasion, or cable stress are constant concerns.
The armored configuration enhances durability by providing additional mechanical protection to the integral cable, making it an ideal solution for installations exposed to oil, debris, vibration, or accidental impact. For facilities where reliability directly impacts production and safety, this probe provides both measurement precision and physical resilience.
Technical Specifications & Mechanical Details
| Parameter | Specification |
|---|
| Model Number | 21505-04-12-90-02 |
| Series | 7200 |
| Probe Type | 8 mm Standard Mount Armored Proximity Probe |
| Mounting Style | Standard Mount |
| Probe Diameter | 8 mm |
| Thread Size | 3/8-24 UNF |
| Probe Case Material | Stainless Steel |
| Cable Type | Armored Integral Cable |
| Cable Length | 2 meters |
| Operating Temperature | -34°C to +177°C (-30°F to +350°F) |
| Storage Temperature | -51°C to +177°C |
| Overall Probe Length | Approx. 120 mm |
| Approximate Weight | 0.22 kg (0.49 lbs) |
Core Applications
This armored 7200 Series probe is commonly deployed in:
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Steam and gas turbines
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Centrifugal compressors
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Reciprocating compressors
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Heavy-duty industrial pumps
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Gearboxes in high-vibration environments
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Oil & gas production facilities
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Power generation plants
It is particularly suitable for installations where cable routing may be exposed to mechanical stress or environmental hazards.
Competitive Advantages
Enhanced Mechanical Protection
Armored cable design reduces risk of physical damage during installation and operation.
Stable Measurement Output
Maintains consistent linear signal response across its measurement range.
High Temperature Capability
Engineered to perform reliably in elevated operating temperatures.
Standard Mount Compatibility
Allows straightforward installation and replacement in existing setups.
Industrial Longevity
Built for continuous-duty service in critical rotating equipment.
Reduced Maintenance Interventions
Minimizes downtime caused by cable wear or accidental damage.
Technical FAQs
1. What differentiates this probe from a standard 7200 probe?
The primary difference is the armored integral cable, which provides additional mechanical protection.
2. What is the probe diameter?
The probe tip diameter is 8 mm.
3. What mounting configuration does it use?
It uses a standard mount design.
4. What is the cable length for this model?
This configuration includes a 2-meter armored cable.
5. What is the operating temperature range?
The probe operates between -34°C and +177°C.
6. What thread size does it use?
It features a 3/8-24 UNF thread.
7. Is it suitable for high-vibration environments?
Yes, it is designed for heavy industrial vibration applications.
8. What is the approximate weight?
Approximately 0.22 kg (0.49 lbs), slightly heavier due to armored cable construction.
9. Can it be installed in continuous monitoring systems?
Yes, it is intended for permanent installation in machinery protection systems.
10. Does it require additional components to function?
Yes, it must be used with compatible 7200 Series extension cables and proximitor modules.
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