1756-OF4 Output Wrong? Check Mode, RTB, and Scaling First
A field-first diagnostic sequence for 1756-OF4 analog output problems: channel mode, removable terminal block, scaling, and controlled electrical checks.
Manufacturer: Bently Nevada
Product No.: 330980-50-00
Country of origin:United States
Product Type: Proximitor Sensor
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 255g
Dimensions: 8cm x 6.1cm x 6.5cm
Shipping port: Xiamen
Warranty: 12 months
The 330980-50-00 is a non-contacting proximity sensor designed for use within the 3300 XL NSv Proximity Transducer System. This sensor is engineered for machines with tight installation requirements, such as centrifugal air compressors, refrigeration compressors, and process gas compressors, where counter bore, sideview, or rearview restrictions limit the use of standard transducer systems. The 330980-50-00 functions by outputting an Average Scale Factor of 7.87 V/mm (200 mV/mil), which is ideal for small target applications such as measuring radial vibration on shafts smaller than 51 mm or axial position on flat targets smaller than 15 mm.
This Proximitor Sensor features a thin design optimized for traditional panel mount configurations. It provides advanced RFI/EMI immunity that prevents nearby high-frequency radio signals from adversely affecting the transducer system, enabling it to achieve European CE mark approvals without specialized mounting considerations. Additionally, the device is equipped with SpringLoc terminal strips that require no special installation tools, facilitating robust and fast field wiring connections.
| Option | Selection | Description |
|---|---|---|
| Model | 330980 | NSv Proximitor Sensor |
| Total length and mounting option | 50 | 5.0 metre (16.4 feet) system length, panel mount |
| Agency approval option | 00 | Not required |
| Category | Parameter | Specification |
|---|---|---|
| Electrical | Sensor Input | Accepts one non-contacting 3300 RAM or 3300 NSv Proximity Probe and Extension Cable |
| Power Supply | Requires -17.5 Vdc to -26 Vdc without barriers at 12 mA maximum consumption; -23 Vdc to -26 Vdc with barriers | |
| Supply Sensitivity | Less than 2 mV change in output voltage per volt change in input voltage | |
| Output Resistance | 50 ohms | |
| Linear Range | 1.5 mm (60 mils), beginning at approximately 0.25 mm (10 mils) from target | |
| Recommended Gap Setting | 1.0 mm (40 mils) | |
| Incremental Scale Factor (ISF) | 7.87 V/mm (200 mV/mil) +12.5% / -20% including interchangeability error | |
| Deviation from Best Fit Straight Line (DSL) | Less than +/-0.06 mm (+/-2.3 mils) | |
| Frequency Response | 0 to 10 kHz: +0, -3 dB typical with up to 305 meters (1000 feet) of field wiring | |
| Mechanical | Proximitor Sensor Material | A380 aluminum |
| Terminal Interface | SpringLoc terminal strips | |
| Net Weight (typical) | 255 g (9 oz) | |
| Shipping Weight | 1.5 Kg | |
| Environmental | Operating Temperature | -52 degC to +100 degC (-62 degF to +212 degF) |
| Storage Temperature | -52 degC to +105 degC (-62 degF to +221 degF) | |
| Relative Humidity | 100% condensing, non-submersible when connectors are protected (Tested to IEC 68-2-3 damp heat) |
Global Express Shipping
Returns & Warranty



Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Color pattern |
Blue
|
| Country of origin |
United States
|