21000-34-00-20-030-04-02 Proximity Housing Bently Nevada

21000 Proximity Probe Housing Assembly

• Brand: Bently Nevada
• Model: 21000-34-00-20-030-04-02
• 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

Technical Specifications

• Standoff Adapter: 2 inches (20 code)
• Probe Penetration: 3.0 inches (030 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
• Temperature range (probe): -52 °C to +177 °C (-62 °F to +350 °F)
• Temperature range (housing): -52 °C to +121 °C (-62 °F to +250 °F)
• Hazardous area rating: Explosion-proof for Class I, Division 1
• Intrinsically safe applications: Available with CSA approvals
• Corrosion resistance: 304 stainless steel sleeve provides durability
• Shielding: Excellent EMI/RFI immunity for stable signals

Installation Guidelines

• Mount the housing directly to the machine case using the 3/4-14 NPT thread.
• Use the standoff adapter (2 in) to set the correct probe gap.
• Adjust the probe penetration (3 in) for optimal target sensing.
• Connect the conduit through the threaded ports for wiring protection.
• Secure the dome cover to seal the housing body completely.
• Install the 0-rings and thread seal to prevent moisture ingress.
• Follow API 670 standard for external mounting practices.

Package Contents

• 1 x 21000 housing assembly (aluminum with 304 SS sleeve)
• 1 x 3300 XL 8 mm reverse mount proximity probe
• 1 x Dome cover with 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)

• Is this housing compatible with 3300 XL 5 mm probes?
  No, the 21000 housing only accepts 8 mm probes with connector protectors.
• What is the maximum cable length I can use with this housing?
  The total cable length (probe + extension) must not exceed 9.1 meters (30 feet).
• Does the housing require additional conduit fittings?
  It includes one 3/4-14 NPT plug; you may add fittings for your conduit runs.
• Can I use this housing in a wet or corrosive environment?
  Yes, the 304 SS sleeve and 0-rings provide excellent moisture and corrosion protection.
• What is the recommended torque for mounting the housing?
  Apply 30-35 N·m (22-26 ft-lb) for the NPT thread connection.
• Do you have stock for the -02 mounting thread option?
  Yes, we keep the 3/4-14 NPT version in stock for fast delivery.

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

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