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We provide 1 year warranty for all remaining parts.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online.
If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.
Amikon offers a wide range of components, products and services related to industrial automation. We have a large surplus of stocks and are also distributors of new products from a variety of quality manufacturers.
Technical specifications for 330752-25-CN
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Product Model330752-25-CN
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Product ParametersHigh Temperature Velomitor
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Tariff Code8537101190
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Country of originUSA
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Place of shipmentXiamen, China
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Estimated Shipping Size34x23x4cm
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ManufacturerBently Nevada
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Weight0.7 kg
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Length2.5 meters
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ApprovalsMultiple Approvals
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Sensitivity5.7 mV/mm/s (145 mV/in/s)±5%
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Output BiasVoltage-12 ±2.0 VDC
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Amplitude Linearity±2% to 152 mm/s (6 in/s)peak
Description
25 2.5 meters
CN Multiple Approvals
High Temperature Velomitor
CN Multiple Approvals
High Temperature Velomitor
Information
Overview
Manuals
Technical notes
Product Applications
Mounting the Sensor Head
Features:
- Segregated High-Temperature Design
- Integral Hardline Cable Eliminates Connector Failures
- Up to 305 m (1,000 ft) Cable Extension Without Signal Degradation
The cable enables you to position the signal conditioningelectronics in a cooler location. The internal electronicswithstands temperatures of 55°C to +121°C (-67°F to +250°F).The integrated design makes it possible to capturemachinery performance data comparable to other BentlyNevada Velomitor transducers, but at significantly highertemperatures.
The 330752-25-CN Bently Nevada High Temperature Velomitor may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 330752-25-CN High Temperature Velomitor Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The defining innovation of the 330752-25-CN is its physically segregated architecture. Unlike standard Velomitor sensors where the piezoelectric sensing element and signal conditioning electronics share a common housing, the HTVS permanently separates these two components. The sensing head—containing the velocity-sensitive piezoelectric crystal and integral mass—is mounted directly on the hot machine surface and is rated for continuous exposure from –55°C to +400°C (–67°F to +752°F). The signal conditioning electronics—including the charge amplifier, integrator, and output driver—are housed in a separate enclosure connected to the sensing head via a rigid, mineral-insulated hardline cable. This cable is also rated for –55°C to +400°C, ensuring that the thermal barrier does not create a weak link in the signal path. By relocating the electronics to a cooler environment (rated –55°C to +121°C), the system achieves performance comparable to standard Velomitor transducers while operating at temperatures that would destroy conventional integrated sensors.
- Industrial Gas Turbines:Exhaust/turbine/bearing housings near hot-gas path
- Steam Turbines:HP/IP casings prone to extreme steam temps
- Aeroderivative Gas Turbines:High-heat zones requiring remote electronics
- Induced Draft (ID) Fans:Hot gas recirculation & FGD fans in power generation
- Process Compressors:Multi-stage compressors handling high-temp petrochem gases
- Turbochargers & Expanders:Industrial turbo-expanders for air separation/cryogenics
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Surface Preparation: Spot-face a flat area at least 28.6 mm (1.125 inches) in diameter. Ensure a surface flatness of at least 25.4 µm (0.001 in) TIR and a surface finish of 0.813 µm (32 µin) rms.
Perpendicular Alignment: Drill and tap the mounting hole perpendicularly within ±6 minutes to prevent axis cross-talk and measurement degradation.
Torque Spec: Thread the sensor head onto the prepared casing stud. Torque to the exact specification matching the stud size (typically 1/4-28 UNF or M8 threads) to prevent looseness or over-stressing.
FAQs
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What is the 330752-25-CN？
+The Bently Nevada 330752-25-CN is a high-temperature Velomitor system designed for monitoring vibration in harsh environments, such as on steam turbines or hot compressors -
What makes the 330752-25-CN suitable for high temperatures?
+It features a segregated design where the sensing head is separated from the signal-conditioning electronics via a hardline cable. The sensor can be mounted on surfaces up to +400°C while the electronics remain in a cooler zone (+121°C max) -
What is the typical application?
+It is designed for measuring radial vibration and rotor position at hot turbine mid-span locations. -
What approvals/certifications does the -CN model have?
+The 330752-25-CN includes ATEX, IECEx, and Chinese NEPSI hazardous area certifications
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