Derivative Action in PID Control Without Noise Problems
Learn what derivative action contributes to a PID loop, why it can amplify measurement noise and setpoint changes, and how filtering, sampling, and staged tests make D tuning safer.
Manufacturer: Bently Nevada
Product No.: 190501-01-99-01
Country of origin:United States
Product Type: Velomitor CT Velocity Transducer
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 297g
Dimensions: 33 mm x 33 mm x 82 mm (H x W x D)
Shipping port: Xiamen
Warranty: 12 months
The 190501-01-99-01 Velomitor CT Velocity Transducer is a low-frequency piezo-velocity sensor designed specifically for measuring casing vibration velocity on cooling tower and air-cooled heat-exchanger fan assemblies. This configuration features a 3/8-in 24 to 3/8-in 24 stud (Option 01) for mounting and utilizes a MIL-C-5015 connection interface (Option 99) with an included 32-foot cable, suitable for systems requiring non-standard connection integration. This transducer effectively measures vibration amplitudes at low frequencies, including those generated by fan motors and speed reducers, typically operating at or above 90 rpm.
The 190501 series is engineered to provide reliable casing measurements by converting mechanical vibration into a proportional voltage signal. This unit is configured with Option 01 for agency approvals, including CSA, ATEX, and IECEx certifications for hazardous area applications. Proper installation on the bearing housing or machine casing is critical to maintaining frequency response and preventing false signal generation.
| Option | Code | Description |
|---|---|---|
| Orderable Part Number | 190501-01-99-01 | Velomitor CT Velocity Transducer |
| A - Mounting Hardware | 01 | Stud 3/8-in 24 to 3/8-in 24 |
| B - Connection | 99 | Unit with included 32-foot cable |
| C - Agency Approval | 01 | CSA/NRTL/C, ATEX/IECEX/CSA |
| Manufacturer | Bently Nevada (Baker Hughes) |
| Sensitivity | 100 mV/in/s (3.94 mV/mm/s) +/- 5% |
| Frequency Response | 1.5 Hz to 1.0 kHz (+/- 3.0 dB) |
| Operating Temperature | -40 degC to +85 degC |
| Case Material | 316L stainless steel |
| Connector | MIL-C-5015, 2-pin |
| Weight | < 297 g |
| Mounting Torque | 4.5 N-m +/- 0.6 N-m |
| Humidity Limit | 100% condensing, non-submerged |
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| Country of origin |
United States
|