Bently Nevada 190501-07-00-01 Velomitor CT Velocity Transducer for Harsh Environments

Introduction

When a critical rotating machine in a Class I, Division 1 hazardous area requires continuous vibration monitoring, the Bently Nevada 190501-07-00-01 Velomitor CT velocity transducer delivers precise measurements without compromising safety. This rugged sensor provides accurate velocity output for early fault detection in compressors, turbines, and pumps operating in explosive environments.

Technical Specifications

The 190501-07-00-01 offers a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%, ensuring consistent signal output for reliable trend analysis. 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 transducer maintains amplitude linearity within ±2% to 63.5 mm/s pk (2.5 in/s pk). Output bias voltage is 10.1 Vdc ± 1.0 Vdc (Pin A referenced to Pin B), with a dynamic output impedance of less than 400 Ω typical. The mounted resonant frequency is 9 kHz minimum (stud mounted, except quick disconnect). Broadband noise floor is 0.229 mm/s (0.009 in/s) pk. Base strain sensitivity is 0.43 mm/s/μstrain (0.017 in/s/μstrain). Maximum cable length is 305 metres (1,000 ft.) using cable part number 02173006 with no signal degradation. The transducer operates from -40°C to +85°C (-40°F to +185°F) and stores from -40°C to +100°C (-40°F to +212°F). It withstands 5000 g pk shock maximum and 100% condensing humidity (non-submerged). Magnetic field susceptibility is less than 0.0068 mm/s/gauss (0.268 mil/s/gauss) at 50 gauss, 50-60 Hz. The unit weighs less than 297 g (10.5 oz.), with a mounting surface diameter of 33 mm (1.3 in) and height of 82 mm (3.2 in). The case and connector are 316L stainless steel. Mounting torque is 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf). Polarity is such that Pin A goes positive with respect to Pin B when velocity is from base to top. Mounting angle is any orientation.

Industry Applications

In oil and gas refineries, the 190501-07-00-01 monitors centrifugal compressors and pumps in Zone 0 areas where flammable gases are present continuously. Its intrinsic safety approvals (Ex ia IIC T4, AEx ia IIC T4) allow direct installation in the most hazardous locations without need for explosion-proof enclosures. In petrochemical plants, the transducer provides early warning of bearing degradation and unbalance in large cooling tower fans and agitators, reducing unplanned downtime.

Installation & Setup Guidance

Mount the transducer using the included plate stud 3/8-in 24 to 3/8-in 24 hardware. Apply the specified mounting torque of 4.5 N-m ± 0.6 N-m to ensure proper coupling and accurate vibration transmission. The MIL-C-5015 connection interface provides a secure, environmentally sealed electrical connection. Install per drawing 167536 for hazardous area compliance. The transducer can be mounted in any orientation, simplifying installation in tight spaces.

Maintenance & Reliability

The 316L stainless steel construction resists corrosion in harsh chemical and marine environments. The internal electronics are isolated from the case, preventing ground loops that can corrupt vibration signals. With no moving parts, the Velomitor CT design offers long-term stability. Periodic inspection of the cable and connector for damage is recommended. Verify output bias voltage during routine checks to confirm sensor health.

Selection Guide & Purchasing Advice

Before ordering, confirm that the agency approval option (01) matches your area classification requirements. This model carries CSA/NRTL/C (Class I, Division 1), ATEX/IECEx/CSA (Class I, Zone 0/1) approvals. Verify cable length requirements up to 305 metres using Bently Nevada part number 02173006. Contact BluePLC Industrial to confirm current lifecycle status and availability. BluePLC Industrial is a trusted supplier of new and obsolete industrial automation parts, offering fast shipping and expert support.