Manufacturer: Bently Nevada
Product No.: 21000-26-05-15-035-04-02
Country of origin:Hoa Kỳ
Product Type: Proximity Probe Housing Assemblies
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 1080g
Dimensions: 250 x 150 x 150 mm (9.8 x 5.9 x 5.9 inches)
Shipping port: Xiamen
Warranty: 12 months
Designed to facilitate the safe external installation and precise micro-adjustment of proximity transducers, the Bently Nevada 21000-26-05-15-035-04-02 Proximity Probe Housing Assembly offers robust, explosion-proof protection for critical vibration-monitoring sensors. This mechanical housing allows instrument engineers to adjust the sensor gap externally without removing the protective dome, preserving the environmental seal during machine operation. Fabricated from high-grade anodized aluminum, the housing provides exceptional durability against corrosive environments, high humidity, and industrial chemical exposure typical of petrochemical and power generation facilities.
| Suffix Code | Parameter Description | Selected Configuration |
|---|---|---|
| -26 | Probe Thread Option | M10 x 1 Thread (Compatible with standard 8mm probe systems) |
| -05 | Conduit Fitting Option | 3/4-14 NPT Entry |
| -15 | Agency Approvals | Multiple Approvals (CSA, FM, ATEX, IECEx Class I Div 1 / Zone 1) |
| -035 | Sleeve Length Option | 3.5 Inches (88.9 mm) |
| -04 | Stilling Well / Probe Protection Option | Standard Protection Sleeve |
| -02 | Mounting Adaptor / Thread Option | Standard NPT Mounting Configuration |
| Manufacturer | Bently Nevada |
| Model Family | 21000 Series Proximity Probe Housing Assemblies |
| Housing Material | Anodized Aluminum |
| Probe Thread Size | M10 x 1 |
| Conduit Entry Size | 3/4-14 NPT |
| Sleeve Length | 3.5 Inches (88.9 mm) |
| Ingress Protection Rating | IP66 / NEMA 4X |
| Hazardous Area Classification | Class I, Division 1, Groups B, C, and D; Zone 1, Ex d IIC |
| Operating Temperature Limits | -40 to +100 degC (Housing limit, check specific O-ring ratings) |
| Country of Origin | United States |
| Shipping Weight (Calculated) | 1.65 kg (3.64 lbs) |
| Package Dimensions (Calculated) | 250 x 150 x 150 mm (9.8 x 5.9 x 5.9 inches) |
| Interface Type | Function / Connection Assignment |
|---|---|
| Internal Probe Mount | M10 x 1 internal thread for direct mounting of the 8mm proximity probe body. |
| Cable Conduit Ports | Dual or single 3/4-14 NPT threaded ports for routed field conduit and cable protection. |
| Process Mount | Machine-side mounting thread designed to seal against the bearing housing or casing wall. |
The 21000 Series features an anodized aluminum body, which makes it considerably lighter and more cost-effective than its 21001 stainless steel counterpart. However, engineers must verify that the environmental exposure allows aluminum; in high-salinity marine applications or extreme chemical washdown environments, the stainless steel 21001 series is preferred. Note that the M10 x 1 thread option (-26) is strictly configured for metric 8mm probes and is not compatible with standard English 3/8-24 UNF threaded probes.
A common point of commissioning failure relates to mechanical thermal growth. When machines warm up, thermal expansion of both the turbine housing and the probe sleeve can shift the physical probe gap relative to the shaft. For machines running above 80 degC, recalculate the thermal growth parameters to prevent physical contact between the probe tip and the shaft target during steady-state operations.
When routing the extension cable through the 3/4-14 NPT conduit entry, always construct a drip loop to ensure moisture does not pool on the internal probe-to-extension connector. The use of a non-hardening thread sealant is critical for the conduit NPT threads to maintain the system's IP66 rating and prevent long-term environmental degradation.
Unthread and remove the protective outer aluminum dome of the housing to access the internal sleeve locking components.
Carefully route the proximity probe cable through the internal sleeve and screw the M10 x 1 probe into the threaded end of the sleeve until fully seated.
Insert the sleeve into the housing, mount the housing assembly onto the machine casing using the standard mounting adapter, and verify seal integrity.
Using a calibrated voltmeter connected to the proximitor sensor, adjust the sleeve depth until the target gap voltage is set. Lock down the sleeve collar, reconnect the outer dome, and torque to OEM specifications.
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| Country of origin |
Hoa Kỳ
|
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