190501-00-00-CN Bently Nevada Velomitor CT 100 mV/in/s Sensor

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

Product Introduction

The 190501-00-00-CN from Bently Nevada is a precision velocity sensor. This Velomitor CT measures absolute casing vibration on rotating machinery. Typical applications include gas turbines, steam turbines, compressors, fans, and pumps. The sensor outputs a dynamic voltage signal proportional to vibration velocity. It also provides a stable bias voltage for circuit verification. Its 316L stainless steel housing offers excellent corrosion resistance. Therefore, this transducer performs reliably in harsh industrial environments.

This particular Bently Nevada Velomitor CT uses mounting hardware option 00. This means no stud is included. Connection option 00 provides a MIL-C-5015 2-pin interface. Approval option CN indicates country-specific certification. The sensor can be installed in any orientation. This flexibility simplifies mounting in tight or awkward locations.

Electrical Specifications

The 190501-00-00-CN delivers accurate and repeatable vibration data. Below are the key electrical parameters.

• Sensitivity: 3.94 mV/mm/s (100 mV/in/s) ±5%

• Frequency Response:

  • 3.0 Hz to 900 Hz (180 to 54,000 cpm) ±1.0 dB

  • 1.5 Hz to 1.0 kHz (90 to 60,000 cpm) ±3.0 dB

• Output Bias Voltage: 10.1 Vdc ± 1.0 Vdc (Pin A referenced to Pin B)

• Dynamic Output Impedance: <400 Ω typical

• Broadband Noise: 0.229 mm/s (0.009 in/s) pk

• Amplitude Linearity: ±2% up to 63.5 mm/s pk (2.5 in/s pk)

• Transverse Response: Less than 5% of axial sensitivity

• Base Strain Sensitivity: 0.43 mm/s/μstrain (0.017 in/s/μstrain)

Additionally, the internal electronics are isolated from the sensor case. This eliminates ground loop issues. The maximum cable length reaches 305 meters (1000 feet) without signal degradation. Use extension cable part number 02173006 when needed.

Temperature and Environmental Limits

The Bently Nevada 190501-00-00-CN operates reliably across a wide temperature range.

• Operating Temperature: -40°C to +85°C (-40°F to +185°F)

• Storage Temperature: -40°C to +100°C (-40°F to +212°F)

• Temperature Sensitivity: -8% to +5% typical over the operating range

• Shock Limit: 5000 g pk maximum

• Humidity Limit: 100% condensing (non-submerged)

• Magnetic Field Susceptibility: <0.0068 mm/s/gauss at 50 gauss, 50-60 Hz

Furthermore, the mounted resonant frequency is 9 kHz minimum. This applies when the sensor is properly stud-mounted. The sensor withstands severe shock events. Therefore, it is ideal for heavy-duty machinery monitoring applications.

Mechanical Specifications

This Velomitor CT features a compact and rugged mechanical design.

• Weight: <297 g (10.5 oz) typical

• Case Material: 316L stainless steel

• Connector: 2-pin 316L stainless steel, MIL-C-5015 type (top exit)

• Mounting Surface Diameter: 33 mm (1.3 in)

• Height: 82 mm (3.2 in)

• Mounting Torque: 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf)

• Mounting Angle: Any orientation

• Polarity: Pin A goes positive with respect to Pin B when velocity is from base to top

Mounting hardware option 00 means no stud is provided. You must supply your own mounting stud or bolt. The threaded hole in the sensor base accepts standard hardware. Connection option 00 gives you the MIL-C-5015 interface. You will need a mating connector and your own cable.

Agency Approval Information

The 190501-00-00-CN carries approval option CN. This indicates country-specific certification. The exact approvals depend on the target country of sale. For reference, standard approval options 01 through 04 include:

• Intrinsically Safe: Ex ia IIC T4, Class I Div 1, Groups A, B, C, D; Class II, Groups E, F, G; Class III

• Non-Incendive: Ex nL IIC T4, Class I Div 2, Groups A, B, C, D; AEx nA T4

Installation for approved versions must follow drawing 167536. The T4 temperature rating applies from -40°C to +100°C. Please confirm the specific CN approval details with Bently Nevada before ordering for hazardous locations.

Installation Guidelines

First, prepare a clean, flat mounting surface. The minimum recommended diameter is 33 mm. Apply a thin layer of coupling grease if desired. Next, obtain a suitable mounting stud or bolt. Screw it into the sensor base. Then attach the sensor to the machine. Use the specified mounting torque of 4.5 N-m. Do not exceed this value. After that, mate the MIL-C-5015 connector to the sensor. Ensure the locking mechanism engages fully. Pin A carries the signal positive. Pin B is the common return. Route the cable away from high-voltage lines. Finally, verify the bias voltage. It should measure approximately 10.1 Vdc between Pin A and Pin B.

Meanwhile, observe these additional points.

• The sensor works in any mounting angle.

• Avoid mounting on uneven, painted, or coated surfaces.

• Do not exceed the 5000 g shock limit.

• For extended cable runs, use shielded cable only.

Packaging List

• 190501-00-00-CN Velomitor CT velocity transducer (one unit)

• MIL-C-5015 2-pin connector on sensor (no mating connector included)

Note: No mounting stud, certificates, warranty documents, or mating cables are included in the package.

Shipping Information

We ship worldwide using reliable carriers.

• FedEx (priority, 3–5 business days)

• UPS (economy, 5–7 business days)

• DHL (express, 2–4 business days)

Tracking numbers are provided within 24 hours after dispatch.

Frequently Asked Questions (FAQ)

1. Why does the 190501-00-00-CN not include a mounting stud?
Option 00 in the mounting hardware position means no stud is provided. You must supply your own mounting hardware. This allows flexibility for custom installations.

2. What does the CN approval code mean?
CN stands for country-specific approval. The exact certification varies by destination country. Please contact Bently Nevada directly to confirm the specific approvals for your region.

3. Can I use this sensor without a stud?
No. You need a stud or bolt to mount the sensor securely. The sensor has a threaded hole in its base. You simply need to obtain the correct threaded fastener separately.

4. What thread size does the sensor base accept?
The 190501-00-00-CN has a standard 3/8-24 UNF threaded hole. You will need a stud or bolt with matching threads. Common options include 3/8-24 to 1/4-28 or 3/8-24 to M8 adapters.

5. What is the bias voltage used for?
The 10.1 Vdc bias voltage allows you to check sensor continuity. It confirms that the sensor and cable are properly connected before taking vibration measurements.