21000-34-00-20-050-04-02 Bently Nevada Proximity Housing

21000-34-00-20-050-04-02 Proximity Probe Housing Assembly

• Brand: Bently Nevada
• Model: 21000-34-00-20-050-04-02
• Material: Aluminum body with a 304 stainless steel sleeve
• Probe Option: 3300 XL 8 mm probe with connector protector
• Hazardous Area Approvals: CSA explosion-proof certified
• Enclosure Rating: CSA Type 4 (weather-resistant)

Technical Specifications

• Standoff Adapter: 2 inches (20 code)
• Probe Penetration: 5.0 inches (050 code)
• Mounting Thread: 3/4-14 NPT (-02 option)
• Fitting: One 3/4-14 NPT plug only (04 code)
• Probe Cable Length: 1.0 meter (not included with -00 option)
• Max C+D Dimension (visible probe): 17.0 in (43.18 cm)
• Max C+D Dimension (total): 32.9 in (83.5 cm)
• Weight: 1.1 kg (2.4 lb) typical without fittings

Performance & Environmental Features

• Linear range: 2 mm (80 mils) for the 3300 XL 8 mm probe
• Sensitivity: 7.87 V/mm (200 mV/mil) typical
• Frequency response: 0 to 10 kHz (-3 dB)
• Resolution: 0.0005 mm (0.02 mil) typical
• Probe temperature range: -52 °C to +177 °C (-62 °F to +350 °F)
• Housing temperature range: -52 °C to +121 °C (-62 °F to +250 °F)
• Hazardous area rating: Explosion-proof for Class I, Division 1
• Intrinsically safe: Available with CSA approvals for safe applications
• Corrosion resistance: 304 stainless steel sleeve ensures long-term durability
• EMI/RFI immunity: Excellent shielding for stable signal transmission

Installation Guidelines

• Mount the housing directly to the machine casing using the 3/4-14 NPT thread.
• Use the 2-inch standoff adapter to set the correct probe gap distance.
• Adjust the 5-inch probe penetration for optimal target sensing depth.
• Route conduit through the threaded ports for secure wiring protection.
• Fasten the dome cover to completely seal the housing body.
• Install the included 0-rings and thread seal to prevent moisture ingress.
• Follow API 670 standard procedures for external mounting practices.

Package Contents

• 1 x 21000 housing assembly (aluminum body with 304 SS sleeve)
• 1 x 3300 XL 8 mm reverse mount proximity probe
• 1 x Dome cover with mounting screws
• 1 x Standoff adapter (2 inch length)
• 1 x Thread seal for NPT connections
• 2 x 0-rings for environmental sealing
• 1 x 3/4-14 NPT plug (fitting option 04)
• Mounting hardware kit (bolts and washers)
• Installation manual with wiring diagram

Shipping & Logistics

• We ship via FedEx, UPS, or DHL express services.
• Delivery within 5 business days after order confirmation.
• All items are new and original in factory packaging.
• We maintain ample stock for immediate shipment.
• 30-day return policy applies for unused items.

Frequently Asked Questions (FAQ)

• Does this housing work with a 3300 XL 5 mm probe?
  No, the 21000 housing only accepts 8 mm probes with connector protectors.
• What is the maximum total cable length for this system?
  The probe and extension cable combined must not exceed 9.1 meters (30 feet).
• Do I need additional conduit fittings for installation?
  The housing includes one 3/4-14 NPT plug; you can add more fittings as needed.
• Is this housing suitable for outdoor or wet environments?
  Yes, the 304 SS sleeve and 0-rings provide excellent moisture and corrosion protection.
• What torque should I apply to the NPT mounting thread?
  Apply 30-35 N·m (22-26 ft-lb) for a proper seal and secure mount.
• Do you have the 5-inch penetration version in stock?
  Yes, we keep the 21000-34-00-20-050-04-02 model readily available for fast dispatch.

Contact Information Inquiries: sales@nex-auto.com | +86 153 9242 9628

Partner NexAuto Technology Limited: https://www.nex-auto.com/