Bently Nevada 190501-12-00-04 Velocity Sensor

Bently Nevada Velomitor CT 190501-12-00-04

Product Introduction

The Bently Nevada 190501-12-00-04 delivers reliable casing vibration measurement. This Velomitor CT transducer comes with CSA, ATEX, and IECEx approvals for hazardous areas. You can install it in Class I, Division 1 or Zone 0/1 environments. Its 316L stainless steel body withstands extreme conditions from -40°C to +85°C.

Technical Specifications

Electrical Parameters

This sensor achieves a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%. Frequency response spans 3.0 Hz to 900 Hz within ±1.0 dB. For wider bandwidth, use 1.5 Hz to 1.0 kHz at ±3.0 dB. Amplitude linearity remains ±2% up to 63.5 mm/s peak. Output bias voltage measures 10.1 Vdc ± 1.0 Vdc on Pin A relative to Pin B.

Additionally, broadband noise sits at 0.229 mm/s peak. Base strain sensitivity is 0.43 mm/s/μstrain. Internal electronics isolate completely from the case. You can run cable up to 305 meters (part number 02173006) without signal loss.

Environmental Limits

Operating temperature ranges from -40°C to +85°C. Storage temperature extends to -40°C up to +100°C. Maximum shock limit reaches 5000 g peak. Humidity tolerance includes 100% condensing conditions (non-submerged). Magnetic field susceptibility stays below 0.0068 mm/s/gauss at 50 gauss, 50-60 Hz.

Mechanical Data

The Bently Nevada 190501-12-00-04 weighs only 297 g. Case material is 316L stainless steel. Connector type is a 2-pin top-entry MIL-C-5015 made of 316L stainless steel. Mounting surface needs 33 mm diameter minimum. Height measures 82 mm. Apply 4.5 N-m ± 0.6 N-m mounting torque (40 in-lbf ± 5 in-lbf).

Furthermore, polarity is defined clearly. Pin A goes positive relative to Pin B when velocity directs from base to top. Any mounting angle works fine. Mounting hardware includes a plate stud: 3/8-in 24 to M8x1 adapter.

Hazardous Area Approvals

This model carries approval option 04. The Bently Nevada 190501-12-00-04 is certified Ex ia IIC T4 for intrinsic safety. It meets Class I, Division 1, Groups A, B, C, D standards. Additionally, it suits Class II, Groups E, F, G and Class III locations. For ATEX and IECEx, it covers Zone 0 and Zone 1 installations.

The non-incendive rating includes Ex nL IIC T4 for Class I, Division 2. AEx nA T4 certification also applies. Installation must follow drawing 167536. Temperature class T4 applies from -40°C to +100°C ambient. Always verify your local requirements before installation.

Performance Characteristics

Mounted resonant frequency is 9 kHz minimum with stud mounting. Transverse response stays below 5% of axial sensitivity. Temperature sensitivity varies from -8% to +5% typical across the operating range. Dynamic output impedance sits under 400 Ω typically.

Specifically, the broadband threshold performs at 0.229 mm/s peak. Base strain sensitivity reaches 0.43 mm/s/μstrain. These specifications make the Bently Nevada 190501-12-00-04 ideal for compressor and turbine monitoring.

Installation Guidelines

First, clean the mounting surface thoroughly. Minimum diameter required is 33 mm. Next, install the plate stud adapter from 3/8-in 24 to M8x1. Apply torque carefully to 4.5 N-m ± 0.6 N-m. Do not exceed this range.

Then, connect Pin A to your positive signal input. Pin B serves as the reference. Grounding is unnecessary because electronics isolate from the case. However, always verify output bias voltage before operation. For maximum cable length, use Bently Nevada cable part number 02173006.

Packaging List

• Bently Nevada 190501-12-00-04 Velomitor CT velocity transducer (1 unit)

• Mounting hardware: Plate stud, 3/8-in 24 to M8x1

• MIL-C-5015 2-pin connector (factory installed)

• Installation drawing reference card (drawing 167536)

Note: No calibration certificate or warranty document is included. Shipping is arranged via Fedex, UPS, or DHL.

Frequently Asked Questions (FAQ)

1. What approvals does the Bently Nevada 190501-12-00-04 hold?
This model carries CSA/NRTL/C, ATEX, and IECEx certifications. It suits Class I, Division 1, Groups A, B, C, D and Zone 0/1 hazardous areas.

2. Can I use this sensor without an intrinsic safety barrier?
Yes, but only in non-hazardous areas. For hazardous locations, you must install an approved intrinsically safe barrier per drawing 167536.

3. What is the difference between option 00 and option 04?
Option 00 has no agency approvals for standard environments. Option 04 adds full hazardous area certifications including CSA, ATEX, and IECEx.

4. How do I clean the Bently Nevada 190501-12-00-04?
Use a soft, dry cloth only. Do not submerge the connector. Avoid high-pressure water jets. The unit is not sealed for submersion.

5. What is the typical shipping time?
In-stock items ship within 2 business days via Fedex, UPS, or DHL. Delivery usually takes 3 to 7 business days depending on your location.