Description
Overview
The Bently Nevada 990‑05‑50‑01‑00 is a compact two‑wire vibration transmitter engineered for OEM and general‑purpose machinery monitoring. Designed for integration with 3300 NSv proximity probes, it converts shaft vibration into a standard 4–20 mA process signal suitable for PLCs, DCS systems, and basic protection architectures.
Functional Characteristics
This loop‑powered transmitter provides conditioned vibration output across a 0–5 mils peak‑to‑peak (0–125 μm pp) measurement range. It operates from a +12 to +35 VDC supply and supports a maximum loop resistance of 1,000 Ω at 35 VDC, ensuring compatibility with long cable runs and diverse control systems.
The 990‑05‑50‑01‑00 mounts directly on 35 mm DIN rail, simplifying panel installation. It supports system lengths up to 5.0 m (16.4 ft) when used with NSv probes and includes built‑in current limiting at approximately 23 mA, protecting downstream equipment.
This transmitter is designed for applications requiring straightforward vibration trending rather than full API 670‑level protection. Its compact footprint and lack of special agency approvals make it ideal for OEMs seeking a cost‑effective monitoring solution.
Technical Specifications
| Parameter |
Specification |
| Model / Part Number |
990‑05‑50‑01‑00 |
| Product Type |
Two‑Wire Vibration Transmitter |
| Input Type |
3300 NSv proximity probe |
| Output Signal |
4–20 mA |
| Measurement Range |
0–5 mils pp (0–125 μm pp) |
| Power Supply |
+12 to +35 VDC |
| Max Loop Resistance |
1,000 Ω at 35 VDC |
| Current Limit |
~23 mA |
| Mounting |
35 mm DIN rail |
| System Length |
Up to 5.0 m |
| Weight |
0.44 kg |
| Dimensions |
10 × 7.5 × 5.2 cm |
| Origin |
USA |
| Condition |
Brand New |
| Availability |
In Stock |
| HS Code |
8537101190 |
| System |
TSI compatible |
Performance Notes
The transmitter conditions the raw displacement signal from an NSv probe and outputs a proportional 4–20 mA signal for trending or basic alarm functions. It is not intended for high‑speed shutdown systems but provides reliable monitoring for compressors, pumps, fans, and general rotating equipment.
Application Areas
-
Centrifugal air compressors
-
Industrial pumps and motors
-
HVAC and process fans
-
OEM machinery requiring simple vibration trending
-
Systems without full API 670 protection requirements
FAQ
Q: What type of probe does this transmitter support It is designed for use with 3300 NSv proximity probes.
Q: Does this model require hazardous‑area approvals No. It is intended for general industrial environments without special certification needs.
Q: What is the output format A standard 4–20 mA loop‑powered signal proportional to vibration amplitude.
Q: Is this suitable for shutdown protection It is intended for basic monitoring and trending, not for high‑integrity trip systems.
