90501-00-00-04 Bently Nevada Velocity Transducer

Bently Nevada 190501-00-00-04 Velomitor CT Velocity Transducer

Product Introduction

The Bently Nevada 190501-00-00-04 Velomitor CT provides accurate velocity measurements for predictive maintenance and machine protection. This sensor converts mechanical vibration into an electrical signal proportional to velocity. Its piezoelectric design ensures stable performance across a broad temperature range. Moreover, the 190501-00-00-04 suits both safe and hazardous locations due to its intrinsic safety certifications.

You can mount this transducer in any orientation, which simplifies installation in tight spaces. Additionally, the internal electronics isolate from the case, reducing ground loop issues. The device supports cable runs up to 305 meters without signal degradation. Therefore, it is ideal for large industrial facilities. Note that this version comes without a mounting stud, giving you the flexibility to source or fabricate your own mounting hardware.

Technical Specifications

Electrical Characteristics

The Bently Nevada 190501-00-00-04 offers a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%. Its frequency response spans 3.0 Hz to 900 Hz (180 to 54,000 cpm) ±1.0 dB, with an extended range of 1.5 Hz to 1.0 kHz (90 to 60,000 cpm) ±3.0 dB. The output bias voltage is 10.1 Vdc ± 1.0 Vdc on Pin A relative to Pin B.

Furthermore, the dynamic output impedance stays below 400 Ω typically. The broadband noise level is only 0.229 mm/s (0.009 in/s) peak. Amplitude linearity reaches ±2% up to 63.5 mm/s peak (2.5 in/s peak). The mounted resonant frequency is 9 kHz minimum when stud-mounted.

Temperature sensitivity varies from -8% to +5% typical over the operating range. Transverse response is less than 5% of the axial sensitivity. Base strain sensitivity measures 0.43 mm/s/μstrain (0.017 in/s/μstrain). Grounding is internal, with electronics isolated from the case.

Environmental Performance

This transducer operates reliably from -40°C to +85°C (-40°F to +185°F) and stores safely between -40°C and +100°C. It withstands shock up to 5000 g peak. The humidity limit is 100% condensing (non-submerged). Magnetic field susceptibility is less than 0.0068 mm/s/gauss at 50 gauss, 50-60 Hz.

Agency Approvals

The 190501-00-00-04 carries multiple certifications. For intrinsic safety, it meets Ex ia IIC T4 and AEx ia IIC T4 for Class I, Division 1, Groups A-D; Class II, Groups E-G; and Class III. Additionally, it holds Ex nL IIC T4 and AEx nA T4 for Class I, Division 2, Groups A-D. The temperature class is T4 from -40°C to +100°C ambient. Install per drawing 167536.

Mechanical and Mounting Details

Physical Dimensions

The unit weighs less than 297 g (10.5 oz). Its mounting surface diameter is 33 mm (1.3 in), and the overall height is 82 mm (3.2 in). The case and connector are both made of 316L stainless steel, ensuring corrosion resistance.

Mounting Hardware

This version includes no mounting stud. You will need to supply your own stud or mounting solution. Apply mounting torque of 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf) when attaching the transducer. The unit can be mounted at any angle. Polarity: Pin A goes positive relative to Pin B when velocity moves from base to top.

Maximum Cable Length

You can extend cable up to 305 metres (1,000 ft.) using part number 02173006 without any signal degradation. This feature gives you flexibility for remote monitoring installations.

Installation Guidelines

Follow these steps for proper installation of the 190501-00-00-04. First, prepare a clean mounting surface with a 33 mm diameter flat area. Next, attach your own stud or mounting hardware to the transducer base using the specified torque. Then, connect the MIL-C-5015 interface to the mating connector. Finally, verify the polarity by checking that Pin A goes positive with respect to Pin B when velocity directs from base to top.

Remember to keep the mounting surface free from debris and burrs. For hazardous area installations, always follow drawing 167536 and local regulations. Do not submerge the transducer in liquid, although it tolerates 100% condensing humidity.

Packaging List

Your shipment of the Bently Nevada 190501-00-00-04 includes the following items:

• 1 x Velomitor CT Velocity Transducer (190501-00-00-04)

• 1 x Installation instruction sheet (drawing reference 167536)

Note: Mounting stud, cables, certificates, and warranty documents ship separately upon request.

Shipping Information

We dispatch all orders via FedEx, UPS, or DHL with tracking numbers provided. Typical delivery takes 3-5 business days for international destinations. Please inspect the package immediately upon arrival.

Frequently Asked Questions

1. What is the sensitivity of the Bently Nevada 190501-00-00-04?
The sensitivity is 3.94 mV/mm/s (100 mV/in/s) ±5% across the full frequency range.

2. Can I use this transducer in Class I, Division 1 hazardous areas?
Yes. The 190501-00-00-04 holds Ex ia IIC T4 and AEx ia IIC T4 approvals for Class I, Division 1, Groups A, B, C, and D.

3. Why does this version not include a mounting stud?
This is the "00" mounting hardware option, which excludes the stud. You can purchase a stud separately or use your own custom mounting solution.

4. What is the maximum cable length without signal loss?
You can run cable up to 305 metres (1,000 ft.) using Bently Nevada part number 02173006 with no degradation.

5. What torque should I apply for mounting?
Apply 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf) to ensure proper mechanical coupling and reliable readings.