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BENTLY NEVADA | VELOMITOR CT
190501-12-00-04
Velomitor CT Velocity Transducer
M8 x 1 plate stud | MIL-C-5015 interface | CSA, ATEX and IECEx approval option
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Bently Nevada 190501-12-00-04
The 190501-12-00-04 is a Velomitor CT low-frequency velocity transducer for cooling-tower and air-cooled heat-exchanger fan machinery operating at or above 90 rpm. Code 12 specifies a 3/8-24 to M8 x 1 plate stud, code 00 specifies the MIL-C-5015 connection interface, and code 04 specifies the CSA Class I Division 1 plus ATEX, IECEx and CSA Class I Zone 0/1 approval option.
Core value: low-frequency integrated velocity measurement with a rugged stainless-steel case and hazardous-area approval option.
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OFFICIAL SPECIFICATIONS | 190501-12-00-04
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Complete model
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190501-12-00-04
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Product family
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Velomitor CT Velocity Transducer
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Product type
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Low-frequency integrated piezoelectric velocity sensor
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Dimensions
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82 mm height; 33 mm mounting surface diameter; 35.6 mm maximum body diameter
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Weight
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Less than 297 g (10.5 oz), typical
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Ordering option 12
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Plate stud, 3/8-24 transducer thread to M8 x 1 machine connection
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Connection option 00
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MIL-C-5015 connection interface
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Approval option 04
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CSA Class I Division 1; ATEX, IECEx and CSA Class I Zone 0/1
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Measurement application
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Cooling-tower and air-cooled heat-exchanger fan machinery at or above 90 rpm
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Measurement output
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Velocity-proportional dynamic voltage output
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Sensitivity
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3.94 mV/mm/s (100 mV/in/s) +/-5%
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Velocity range
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63.5 mm/s peak (2.5 in/s peak)
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Frequency response
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3.0 to 900 Hz, +/-1 dB
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Extended frequency response
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1.5 Hz to 1 kHz, +/-3 dB
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Amplitude linearity
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Within +/-2% to 63.5 mm/s peak
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Output bias
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10.1 Vdc +/-1.0 Vdc
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Dynamic output impedance
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Less than 400 ohm, typical
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Maximum cable length
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305 m (1,000 ft)
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Electrical connection
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Top-mounted 2-pin MIL-C-5015 connector
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Case material
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316L stainless steel
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Mounting torque
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4.5 N-m +/-0.6 N-m
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Mounting orientation
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Any orientation
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Operating temperature
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-40 to +85 C (-40 to +185 F)
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Storage temperature
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-40 to +100 C (-40 to +212 F)
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Environmental and compliance
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100% condensing humidity, non-submerged; FCC, EMC 2014/30/EU, RoHS 2011/65/EU and option 04 hazardous-area approvals
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CONTACT
STELLA
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Cooling-tower fans
Measures casing vibration on slow-speed cooling-tower fan machinery operating at or above 90 rpm.
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Air-cooled exchangers
Provides integrated velocity output for air-cooled heat-exchanger fan monitoring.
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Bearing housings
Stud mounting supports direct vibration measurement on a suitable bearing housing or machine casing.
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Low-frequency monitoring
The 1.5 Hz extended response supports machinery whose important running frequencies are below conventional accelerometer ranges.
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Output sensitivity
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3.94 mV/mm/s (100 mV/in/s) +/-5%
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Velocity range
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63.5 mm/s peak (2.5 in/s peak)
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Frequency response
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3.0 to 900 Hz +/-1 dB; 1.5 Hz to 1 kHz +/-3 dB
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Output bias
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10.1 Vdc +/-1.0 Vdc
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Dynamic impedance
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Less than 400 ohm, typical
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Amplitude linearity
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Within +/-2% to full specified velocity range
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Connector
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2-pin MIL-C-5015, 316L stainless steel
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Cable length
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305 m maximum; 219 m recommended for the documented typical installation
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Resonant frequency
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9 kHz minimum when stud mounted, excluding quick-disconnect mounting
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1 | Confirm the complete ordering code
Use the 3/8-24 to M8 x 1 plate stud identified by option 12 and the MIL-C-5015 interface identified by option 00.
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2 | Prepare the mounting surface
Mount directly to a suitable bearing housing or casing surface; keep the mounting surface clean and mechanically rigid.
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3 | Apply the specified torque
Tighten the transducer to 4.5 N-m +/-0.6 N-m. Any mounting orientation is permitted.
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4 | Complete the signal connection
Use the correct mating MIL-C-5015 cable assembly, protect the connector, and keep total cable length within the published limit.
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Hazardous locations
Option 04 provides CSA Class I Division 1 and ATEX, IECEx and CSA Class I Zone 0/1 approval selections.
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EMC and FCC
FCC Part 15 and EMC Directive 2014/30/EU.
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Materials compliance
RoHS Directive 2011/65/EU.
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Environment
-40 to +85 C operation, -40 to +100 C storage and 100% condensing humidity when not submerged.
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Install and use the transducer in accordance with the applicable approval drawing, connector requirements and protection method for the selected hazardous-area installation.
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Q1. How can a buyer verify that the quoted unit is the exact 190501-12-00-04?
A. Match the complete nameplate number. Code 12 must indicate the 3/8-24 to M8 x 1 plate stud, code 00 the MIL-C-5015 interface, and code 04 the specified CSA, ATEX and IECEx hazardous-area approval selection.
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Q2. How can New, Used and Refurbished condition be distinguished for this transducer?
A. Request current close-up photos of the 316L case, mounting threads, two-pin MIL-C-5015 connector, nameplate and packaging. A new unit should show no wrench marks, thread damage, connector wear, cable residue, contamination or replacement labels.
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Q3. How should procurement verify that the supplier is legitimate and reliable?
A. Check the legal entity, business registration, physical address, company-domain communication history, bank-beneficiary consistency and written traceability for the exact 190501-12-00-04 before accepting commercial terms.
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Q4. Which technical points should an engineer confirm before purchase?
A. Confirm the M8 x 1 machine-side stud, MIL-C-5015 connection, 3.94 mV/mm/s sensitivity, 63.5 mm/s peak range, 1.5 Hz to 1 kHz extended response, 82 mm height, less-than-297 g weight and required option 04 approvals.
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Q5. What physical evidence should be requested before payment?
A. Ask for dated photos or video showing the full 190501-12-00-04 nameplate, connector pins, mounting stud, case condition, packaging labels and measurable dimensions. If testing is offered, require the serial-numbered output and bias-voltage record.
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Q6. Can another 190501 suffix replace 190501-12-00-04?
A. Not automatically. Changing code 12 changes the mounting hardware, code 00 changes the connection interface, and code 04 changes the hazardous-area approval package. A substitute is acceptable only after all three option positions match the installation and compliance requirements.
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