General Information

Core Description

The CA21000-34-05-00-036-03-02 is a Bently Nevada explosion-proof aluminum probe housing assembly featuring an integrated 3300 XL 8mm proximity probe with a 0.5-meter cable and connector protector. Fully compliant with API 670 standards, this CSA Type 4 rated all-metal housing works seamlessly on industrial machinery to deliver secure external probe access, fast gap adjustments, and stable mechanical transducer protection in hazardous areas.

Enviromental Strength

• CSA Type 4 Waterproof Certification: Engineered to fully satisfy rigorous CSA Type 4 enclosure ratings, ensuring advanced multi-regional barrier resilience against windblown dust, heavy outdoor downpours, and direct hose-directed water streams.
• Wide Thermal Range Capability: Safely shields internal electrical instrumentation arrays while surviving extreme, rapid plant operating temperatures fluctuating between -51°C to +177°C (-60°F to +351°F) without mechanical degradation.
• Explosion-Proof Area Rating: Built with robust cast aluminum and an explosion-proof metal design certified for deployment inside highly volatile locations, including Class I, Division 1 and 2, Groups C and D environments.
• ClickLoc Connector Shroud Protection: Outfitted with a specialized connector protector option code that mechanically seals the gold-plated coaxial wire joint, neutralizing signal glitch failures caused by turbine oil mist tracking.

System Compatibility and Replacement Models

System Compatibility:

• Bently Nevada 3300 XL 8 mm Proximity Transducer System components (including standard extension cables and Proximitors)
• Standard industrial machinery casings and intermediate brackets tapped for a 3/4-14 NPT mounting thread profile
• Centralized plant asset protection monitors accepting standard analog eddy current proximity voltage inputs (such as Bently Nevada 3500 racks)

Alternative Replacement Models:

• 21000-34-05-00-036-03-02 (Standard aluminum housing version with identical mechanical dimensions but lacking certified explosion-proof labels)
• CA24701-34-05-00-036-03-02 (Heavy-duty alternative version utilizing a full 303 stainless steel body structure instead of cast aluminum)
• Standalone 330105-02-12-05-02-05 reverse-mount proximity probe paired with a standalone 44382-081 replacement sleeve

Differences from Alternative Models:

• Hazardous Classification Barrier: The prefix CA designates an officially certified CSA explosion-proof rated housing, whereas the base 21000 model shares identical sizing but is strictly restricted to non-hazardous or intrinsically safe applications utilizing external safety barriers.
• Enclosure Metallurgy Weight: The CA21000 assembly utilizes a cast aluminum body structure weighing 1.1 kg, which offers easier handling during field adjustments. In contrast, the CA24701 series features a solid 303 stainless steel body weighing 1.8 kg, providing superior resistance to structural pitting in highly corrosive environments like offshore marine skids.
• Sleeve Vibration Resistance Limits: This specific model features a 3.6-inch sleeve penetration (-036) with a zero standoff layout (-00). It remains light and compact, unlike extended setups where the total combined length exceeds 300 mm (12 inches), which strictly require secondary internal probe support sleeves (P/N 37948-01) to absorb machinery vibration resonances.

Ordering Information Table

Installation & Troubleshooting FAQ

Q1: How do I adjust the proximity probe gap when utilizing this external housing assembly?

A: Unscrew the threaded aluminum dome cover to expose the rear of the reverse-mount probe lead. Loosen the sleeve locknut, hook up a digital multimeter to your Proximitor’s OUT and COM terminals, and turn the main sleeve body to adjust the physical gap distance. For a standard 3300 XL 8mm system, rotate the sleeve until your multimeter reads a baseline voltage of -10.0 VDC (corresponding to the midpoint of the 2.0 mm linear range), then tighten the locknut to 11.2 N·m (100 in·lbf).

Q2: Why is the transducer signal registering high-frequency electrical noise or an unbalance glitch?

A: This configuration implements a short 3.6-inch sleeve penetration length. If the stainless steel sleeve or probe head is positioned too close to internal casing bracket walls or counterbore steps, it triggers a Side View Effect where the sensor's high-frequency RF field cross-talks with adjacent metal. Ensure that any machine casing counterbore hole diameter measures at least three times the probe tip diameter (minimum 24mm for an 8mm probe head) to eliminate physical signal dampening.

Q3: Lube oil is leaking into the external conduit lines from the housing. How can this be corrected?

A: This indicates that the internal environmental seals or thread seals have worn out or were pinched during field installation. Check the condition of the internal Viton O-rings inside the housing body assembly and ensure the outer 3/4-14 NPT pipe threads are wrapped with fresh PTFE sealant tape. If your machine runs a high oil washdown pattern, verify that the Option E:03 cable seal grip grommet is tightly compressed around the extension cable jacket to block escaping fluid migration.

Accessories

Individual Probe Sleeve for 21000/24701 Proximity Probe Housings

44382-AAA

The individual probe sleeve length does not include the distance from the end of the sleeve to the probe tip or the gap from the probe tip to the target material. If only the part number of the original housing is known, and the sleeve cannot be measured, use the following table to determine the sleeve length: