The Bently Nevada 21000-28-10-00-094-04-02 represents a fully assembled proximity probe housing solution. This particular model integrates a 3300 XL 8 mm probe with selectable hazardous area approvals into a durable aluminum housing. Specifically, it is designed for externally mounted applications where measuring shaft vibration and position is essential. Furthermore, its robust construction and hazardous area certifications make it a reliable choice for API 670 compliant machinery protection systems.
This section details the core technical attributes of the 21000-28-10-00-094-04-02.
Housing Series: This unit belongs to the 21000 series of proximity probe housing assemblies.
Probe Option: The suffix code 28 indicates that this assembly includes a 3300 XL 8 mm probe with selectable hazardous area approvals.
Probe Cable Length: Option 10 signifies a probe cable length of 1.0 meter (39 inches) .
Standoff Adapter: The standoff adapter option is 00, which means no standoff adapter is included.
Probe Penetration (D Dimension): The probe penetration length is set to 094, which equals 9.4 inches.
Fitting Option: The -04 option includes one 3/4-14 NPT plug only.
Mounting Thread: This model uses a 3/4-14 NPT mounting thread, designated by option 02. This is mandatory when no standoff adapter is ordered.
Understanding the physical limits and environmental tolerances of the Bently Nevada 21000-28-10-00-094-04-02 is essential for proper installation.
Housing Material: The assembly features an aluminum body with a 304 stainless steel sleeve, offering a balance of lightweight design and corrosion resistance.
Weight: It typically weighs around 1.1 kg (2.4 lb) without the fittings.
Maximum Probe Extension: The maximum visible probe length, including any standoff, is 17.0 inches (43.18 cm). The total maximum dimension is 32.9 inches (83.5 cm).
Design Notes: For probe penetrations between 1.0 and 2.0 inches, counter-boring the machine case might be necessary. Moreover, if the total penetration exceeds 300 mm (12 inches), you must add sleeve support near the probe to prevent resonance.
Hazardous Area Approvals: The 21000 housing is CSA certified for explosion-proof applications in North America. It is rated for Class I Divisions 1 and 2 Groups C and D, and Class II Divisions 1 and 2 Groups E, F, and G. Additionally, it is an Enclosure Type 4 and has temperature classifications of T5 @ Ta = -50°C to +40°C and T4 @ Ta = -50°C to +80°C. Note that CA housings are specifically for North American end users; for other countries, the standard 21000 housing must be ordered.
Proper installation ensures the longevity and accuracy of the 21000-28-10-00-094-04-02.
Mounting: Secure the housing to the machine using the 3/4-14 NPT mounting thread. Ensure the mounting surface is clean and flat.
Probe Penetration Adjustment: The adjustment range of the probe penetration option D is 13 mm (± 0.5 in). Therefore, you can fine-tune the probe's position for optimal performance.
Cable Management: Use the provided fitting to maintain a proper seal and prevent damage to the cable.
Sleeve Support: As noted, if the total probe extension is long, install the necessary sleeve support to avoid mechanical resonance, which could affect measurement accuracy.
When you purchase the Bently Nevada 21000-28-10-00-094-04-02, your shipment will include the following items:
One (1) Bently Nevada 21000 proximity probe housing assembly (Model: 21000-28-10-00-094-04-02).
The assembly includes the dome cover, body, probe sleeve, O-rings, reverse mount proximity probe, and thread seal.
One (1) 3/4-14 NPT plug.
Q1: What type of probe is included with the Bently Nevada 21000-28-10-00-094-04-02?
A: This assembly includes a 3300 XL 8 mm probe with selectable hazardous area approvals, making it suitable for use in potentially explosive environments.
Q2: Does the 21000-28-10-00-094-04-02 come with a standoff adapter?
A: No, the suffix code 00 for the standoff adapter indicates that this model does not include one. The probe is mounted directly.
Q3: What is the probe penetration length for the 21000-28-10-00-094-04-02 model?
A: This model has a probe penetration (D dimension) of 9.4 inches. This length is adjustable by ± 0.5 inches, providing flexibility during installation.
Q4: Is the Bently Nevada 21000 housing compliant with industry standards?
A: Yes, the 21000 housing is fully compliant with the American Petroleum Institute's (API) 670 Standard for externally mounted proximity probe housings.
Q5: What should I do if the total probe penetration is very long?
A: If the probe penetration exceeds 300 mm (12 inches), you must add sleeve support near the probe. This step is crucial to prevent resonance and ensure measurement accuracy.
We ship this product via FedEx, UPS, or DHL to ensure fast and reliable delivery to your location.
| Brand Name | |
| Model No. | 21000-28-10-00-094-04-02 |
| Product Type | Probe Housing Assemblies |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
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