Bently Nevada 991-25-70-02-01 Thrust Transmitter

Specifications

Unless otherwise noted, the following specifications apply at +22°C (+72°F) using a 3300 NSv Probe and Extension Cable, and an AISI 4140 steel target.

Electrical

Input

• Probe Compatibility: Accepts 1 non-contacting 3300 NSv Proximity Probe and extension cable.

Power

• Requirement: +12 to +35 Vdc input at the transmitter terminal.

Signal Output

• 4 to 20 mA Output: 4 to 20 mAdc over specified full-scale range in 2-wire configuration.
• Accuracy: Within ±1.5% over specified full-scale range (typical). Accuracy is rated from the TEST signal input to the voltage measured across a 250 Ω loop resistance.

Loop

• Maximum Loop Resistance: 1,000 Ω including cable at 35 Vdc.
• Current Limiting: 23 mA typical.
• Zero and Span Adjustments: Non-interacting external adjustments.
• Not OK/Signal Defeat: Signal output will go to less than 3.6 mA within 100 µs after a Not OK condition occurs. Signal output is restored within 0.1 seconds after the Not OK condition is removed.

Proximitor Sensor Output

• Compatibility: Compatible with ungrounded, portable test equipment. When using grounded, AC-powered test equipment, use the 122115-01 Test Adapter for signal isolation.
• Output Impedance: Prox Out has a 10 kΩ output impedance calibrated for a 10 MΩ load.
• Linear Range: 0.25 to 1.65 mm (10 to 65 mils) for Prox Out. Suitable for 0.6-0-0.6 mm or 25-0-25 mils current loop linear ranges.
• Prox Out Incremental Scale Factor: 7.87 mV/µm (200 mV/mil) ±6.5% typical including interchangeability errors when measured in increments of 0.25 mm (10 mils) over the linear range using a flat 30 mm (1.2 inch) target.
• Temperature Stability: Incremental scale factor remains within ±10% of 7.87 mV/µm (200 mV/mil) from 0°C to +70°C (+32°F to +158°F).
• Minimum Target Size: 9.5 mm (0.375 in) diameter.
• Leadwire Length: Proximitor Sensor Output (BNC connector), maximum cable distance is 3 meters (10 feet).

Non-Hazardous, Zone 2 or Div 2 Hazardous Area Locations

• Maximum Distance: 13 km (8 miles) maximum between transmitter and receiving device for signal output.

Environmental Limits

Transmitter Temperature

• Operating Temperature: -35°C to +85°C (-31°F to +185°F)
• Storage Temperature: -51°C to +100°C (-60°F to +212°F)

Probe Temperature

• Operating Temperature: -52°C to +177°C (-62°F to +351°F)
• Storage Temperature: -52°C to +177°C (-62°F to +351°F)

Relative Humidity

• Humidity: 100% condensing, non-submerged, with protection of coaxial connectors.

Mechanical

Transducer

• Tip Material: Polyphenylene sulfide (PPS)
• Case Material: AISI 303 or 304 Stainless Steel (SST)

Probe Cable

• Type: 75Ω coaxial, fluoroethylene propylene (FEP) insulated
• Cable Armor (optional): Flexible AISI 302 SST with optional FEP outer jacket
• Tensile Strength: 222 N (50 lbf) probe case to probe lead, maximum

Transmitter

• Weight: 0.43 kg (0.9 lbm)

Total System

• Weight: 0.82 kg (1.8 lbm) typical