The Bently Nevada 990-04-50-01-CN transmitter monitors machinery vibration levels continuously. This vibration transmitter converts velocity signals into a standard 4-20 mA output. It provides real-time vibration data for predictive maintenance systems. The device protects turbines, compressors, and pumps from excessive vibration damage.
Technical Specifications of Bently Nevada 990-04-50-01-CN
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Series | 990 Series |
| Full Model | Bently Nevada 990-04-50-01-CN |
| Dimensions (H x W x D) | 11.4 cm x 5.7 cm x 5.7 cm |
| Weight | Approximately 0.30 kg |
| Output Signal | 4-20 mA (Loop-powered) |
| Measurement Range | 0 to 50 mm/s (Peak) |
| Frequency Response | 10 Hz to 1000 Hz |
| Supply Voltage | 24 V DC (Nominal, loop-powered) |
| Accuracy | ±5% of full scale |
| Housing Material | Stainless Steel |
| Mounting Thread | 1/4-28 UNF |
Component Count and Construction
The Bently Nevada contains over 80 discrete components. You will find a piezoelectric accelerometer sensor inside the housing. Furthermore, the device includes signal conditioning and integration circuits. The assembly also features transient protection for industrial environments. Moreover, the stainless steel housing provides excellent durability against corrosion.
Interfaces, Energy Storage, and Signal Processing
The Bently Nevada 990-04-50-01-CN provides two screw terminals for loop wiring. Moreover, the device uses minimal capacitors for signal filtering. These capacitors store negligible energy for noise rejection. The transmitter requires no external power beyond the 4-20 mA loop. Additionally, the loop-powered design simplifies field wiring significantly.
Functional Logic and Application Context
This Bently Nevada device senses vibration using a piezoelectric crystal element. It then integrates the acceleration signal into velocity. The Bently Nevada converts this velocity reading into a proportional 4-20 mA current. Additionally, it performs continuous self-checking for sensor health. Consequently, operators can monitor machine vibration from a remote control room. The transmitter works with any PLC or DCS analog input card.
Installation and Environmental Limits
You must mount the transmitter directly on the machine casing. The operating temperature range spans -40°C to +85°C . Furthermore, the device withstands 50 g shock without calibration shift. Always verify the Bently Nevada orientation before final mounting. The device meets IP67 ingress protection for harsh environments.
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