Bently Nevada 165335-01 990 Vibration Transmitter

Bently Nevada 165335-01 990 Vibration Transmitter is a two-wire, loop-powered device mainly intended for original equipment manufacturers (OEMs) of centrifugal air compressors, small pumps, motors, or fans. It receives input from a 3300 NSv proximity probe and its matching extension cable (with 5m and 7m system length options), converts the signal into appropriate peak-to-peak vibration amplitude in engineering units, and outputs it as a 4-20mA industry-standard signal to mechanical control systems for mechanical protection alarms and logic control.

DATA SHEET

165335-01.pdf

Key Features
Integrates a Proximitor sensor, eliminating the need for external units.
Non-isolated "PROX OUT" and "COM" terminals, along with a coaxial connector, provide dynamic vibration and gap voltage signal outputs for diagnostic purposes.
Non-interactive zero and span potentiometers under the transmitter label support loop adjustment.
Test input pins allow quick verification of loop signal output using a function generator as the input.
The "Not OK/Signal Defeat" circuit prevents high output or false alarms caused by proximity probe failures or loose connections.
Standard mounting options include DIN rail clips or bulkhead mounting screws, simplifying installation.
Potted construction, suitable for high-humidity environments (up to 100% condensation).
Compatible with 3300 NSv proximity probes, enabling sensor installation in small spaces with minimal clearance, typically used in centrifugal air compressors.

Specification Parameters

(I) Electrical Parameters

• Power-On Suppression: After power is applied, the signal output remains below 3.6 mA (NOT OK) for 2 - 3 seconds, indicating that the device is not ready. Transients may be observed when the device is operating normally.
• Proximitor Sensor Output: It is compatible with non - grounded portable test equipment. When using a grounded AC - powered test equipment, the 122115 - 01 test adapter is required for signal isolation.
• Output Impedance: The output impedance of Prox Out is 10 kΩ, and it is calibrated for a 10 MΩ load.
• Prox out Linear Range: 1.4 mm (55 mils), starting from approximately 0.25 mm (10 mils) from the target surface.
• Prox Out Incremental Scale Factor: Using a 30 mm (1.2 - inch) flat target, when measured in 0.25 mm (10 - mil) increments within the linear range, the typical value is 7.87 mV/μm (200 mV/mil) ± 6.5% (including interchangeability error), the worst - case value is 7.87 mV/μm ± 10%, and the typical noise level is 50 mV peak - to - peak.
• Temperature Stability: Within the range of 0°C to +70°C (32°F to +158°F), the incremental scale factor remains within ±10% of 7.87 mV/μm (200 mV/mil).
• Frequency Response: 5 Hz to 6000 Hz, +0, 3 dB.
• Target Size: Minimum diameter of 9.5 mm (0.375 inches).
• Lead Length: The maximum cable distance for the Proximitor sensor output (BNC connector) is 3 meters (10 feet).
• Hazardous Area Location: Non - hazardous areas, Class 2, Division 2 hazardous areas.
• Power Supply: 28V.

Environmental Limitations

• Emitter Temperature: Operating temperature: -35°C to +85°C (-31°F to +185°F); Storage temperature: -52°C to +100°C (-62°F to +212°F).
• Probe Temperature: Operating and storage temperatures are both -52°C to +177°C (-62°F to +351°F).
• Relative Humidity: With the protection of the coaxial connector, it can be used in 100% condensing environments, but not in submerged conditions.

Mechanical Parameters

• Sensor Tip Material: Polyphenylene Sulfide (PPS).
• Sensor Housing Material: AISI 303 or 304 stainless steel (SST).
• Probe Cable: 75Ω coaxial cable with Fluorinated Ethylene Propylene (FEP) insulation.
• Cable Armor (Optional): Flexible AISI 302 stainless steel, with an optional FEP outer sheath.
• Tensile Strength: Maximum 222 N (50 lbf) from the probe housing to the probe lead.
• Weight: The emitter weighs 0.43 kg (0.9 lbm), and the typical total system weight is 0.82 kg (1.8 lbm).

The "Prox Out" coaxial connector of the 990 vibration transmitter provides non-isolated dynamic sensor signals for mechanical diagnostics. It can be directly connected to battery-powered or isolated test equipment to diagnose mechanical problems. However, since the "PROX OUT" signal is not isolated from the 4-20mA loop signal, it is recommended to use an interface for signal isolation. The 990/991 test adapter can adjust the "PROX OUT" signal of the 990 transmitter to make it suitable for AC-powered test equipment. It can also invert and isolate the sensor signal of the 990, making it suitable for devices such as oscilloscopes and analyzers while maintaining industry-standard signal polarity. It is strongly recommended to use this test adapter in all applications to maintain isolation between test equipment and loop signals and ensure that the installation maintains mechanical protection integrity.

990 Vibration Transmitter Model: 990-AA-BB-CC-DD

• A (Full-Scale Option): 04 (0-4 mils peak-to-peak, i.e., 0-100μm peak-to-peak), 05 (0-5 mils peak-to-peak, i.e., 0-125μm peak-to-peak), 08 (0-8 mils peak-to-peak, i.e., 0-200μm peak-to-peak), 10 (0-10 mils peak-to-peak, i.e., 0-250μm peak-to-peak).
• B (System Length Option): 50 (5.0 meters, i.e., 16.4 feet), 70 (7.0 meters, i.e., 23.0 feet).
• C (Mounting Option): 01 (35mm DIN rail clip), 02 (bulkhead mounting screws), 03 (DIN clip and screws).
• D (Agency Certification Option): 00 (not required), 01 (CSA Zone 2), 05 (CSA Zone 2, ATEX Zone 0, ATEX Zone 2, including ABS marine certification).

3300 NSv Proximity Probe (Standard): Models 330901, 330902, 330908, 330909, etc. The suffix -AA-BB-CC-DD-EE represents different parameters respectively.

• A (Unthreaded Length Option): At least 0.7 inches shorter than the housing length, ordered in 0.1-inch increments, with a minimum of 0 inches and a maximum of 9.2 inches (e.g., 04 = 0.4 inches).
• B (Housing Length Option): Ordered in 0.1-inch increments, with a minimum of 0.8 inches and a maximum of 9.9 inches (e.g., 35 = 3.5 inches).
• C (Total Length Option): 05 (0.5 meters, i.e., 1.67 feet), 10 (1.0 meters, i.e., 3.25 feet), 50 (5.0 meters, i.e., 16.4 feet), 70 (7.0 meters, i.e., 23 feet).
• D (Connector Option): 01 (micro coaxial ClickLoc connector with connector protector, standard cable), 02 (micro coaxial ClickLoc connector, standard cable), 11 (micro coaxial ClickLoc connector with connector protector, FluidLoc cable), 12 (micro coaxial ClickLoc connector, FluidLoc cable).
• E (Agency Certification Option): 00 (not required), 05 (multiple certifications, including CSA NRTL/C and BASEEFA/CENELEC, including CSA Zone 2).

3300 NSv Proximity Probe (Metric): Models 330903, 330904, 330905, 330910, etc. The parameters of the suffix -AA-BB-CC-DD-EE are similar to those of the standard probes, with dimensions in millimeters.
3300 NSv Reverse Mount Probe: Models 330906-02-12-CC-DD-EE (3/8-24 UNF thread), 330907-05-30-CC-DD-EE (M10 x 1 UNF thread). There are no armor or connector protector options, and the parameters are similar to those mentioned above.
Extension Cable: Model 330930-AAA-BB-CC

• A (Cable Length Option): 040 (4.0 meters, i.e., 13.1 feet), 045 (4.5 meters, i.e., 14.8 feet), 060 (6.0 meters, i.e., 19.7 feet), 065 (6.5 meters, i.e., 21.3 feet).
• B (Armor Option): 01 (stainless steel armor with FEP covering) and other options.
• C (Agency Certification Option): 00 (not required), 05 (multiple certifications).

Accessories
990/991 Test Adapter: Model 122115-01, which can invert and isolate the PROX OUT signal of the 990 transmitter, making it suitable for AC-powered diagnostic equipment, with various functions and benefits.
990/991 Test Adapter Accessories: Including coaxial cable kits, single coaxial cables, etc.
990/991 Test Adapter Spare Parts: Batteries, AC adapters, power cords, user guides, etc.
Probe and Transmitter Accessories: Bulk cables, installation user guides, cable connector kits, connector crimp tool kits, mounting screws, DIN rail mounting kits, etc.

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