330850-51-05 | Bently Nevada Proximity Transducer System Proximitor

Product Overview

The Bently Nevada 330850-51-05 is a 3300 XL 25 mm Proximitor Sensor configured for DIN rail mounting with multiple agency approvals. It provides the same 5.0-meter system length and hazardous area certifications as the 50-05 variant, but with a slim-profile housing designed for high-density DIN rail installations. This makes it ideal for control panels and marshalling cabinets where space is at a premium and international safety compliance is required.

Key Specifications

• Product Family: 3300 XL 25 mm Proximity Transducer System
• System Length: 5.0 meters (16.4 feet)
• Mounting Option: DIN rail mount (35 mm top-hat rail)
• Agency Approvals: Multiple — CSA, ATEX, IECEx (05 suffix)
• Probe Input: One noncontacting 3300 XL 25 mm proximity probe + extension cable
• Linear Range: 12.7 mm (500 mils)
• Average Scale Factor: 0.787 V/mm (20 mV/mil) ±5%
• Frequency Response: 0 Hz to 10 kHz (±1 dB)
• Power Supply: -17.5 Vdc to -26 Vdc (without barriers), max 12 mA; -23 Vdc to -26 Vdc (with barriers)
• Supply Sensitivity: < 2 mV output change per 1 V input change
• Output Resistance: 50 Ω
• Target Material: Factory calibrated for AISI 4140 steel
• Housing Material: A380 aluminum alloy
• Operating Temperature: -51°C to +100°C (-60°F to +212°F)
• Storage Temperature: -51°C to +105°C (-60°F to +221°F)
• Weight: Approx. 0.22 kg

Compatibility & Applications

The DIN rail form factor enables high-density mounting alongside other Bently Nevada monitors and third-party I/O modules. Used in power plant control room panels, refinery DCS marshalling cabinets, offshore platform instrument racks, chemical plant MCC rooms, and steel mill automation enclosures where DIN rail mounting is the standard.

FAQ

• Q: What DIN rail type is supported? A> Standard 35 mm top-hat DIN rail (EN 60715). The slim housing allows multiple units to be mounted side-by-side with minimal spacing.
• Q: What is the difference between 50-05 and 51-05? A> "50" = panel mount; "51" = DIN rail mount. Both share the same 5.0 m system length and multi-approval certification. Select based on your mounting preference.
• Q: Can I mix panel mount and DIN mount units in the same system? A> Yes, the proximitor mounting style does not affect system performance. Choose the mount type that fits your enclosure layout.
• Q: Does DIN rail mounting affect thermal performance? A> No, the A380 aluminum housing provides adequate heat dissipation in both panel and DIN rail configurations. Ensure adequate cabinet ventilation.

Installation Guide

1. Clip the proximitor onto the 35 mm DIN rail in the desired position.
2. Route probe and extension cable through cable glands or conduit entries.
3. Connect the probe to the proximitor input using SpringLoc terminals.
4. Apply -24 Vdc power and verify gap voltage.
5. Connect output to the monitor or control system analog input.
6. Label each channel for future maintenance and calibration tracking.

Selection Tips

• Select 330850-51-05 for DIN rail mounting with 5.0 m system length and hazardous area approvals.
• For panel mounting with the same specs, use 330850-50-05.
• For non-hazardous DIN rail applications, 330850-51-00 offers lower cost.
• Consider cabinet rail spacing; while slim, allow adequate clearance for wiring and heat dissipation.