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89477-25

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The 89477-25 engineered to operate reliably in environments where surface temperatures reach up to +400°C (+752°F). This 25-foot cable permanently connects the high-temperature sensing head to the signal conditioning electronics.
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Technical specifications for 89477-25

  • Manufacturer:
    Bently Nevada
  • Part Number:
    89477-25
  • Product Family:
    330500 Velomitor Piezo-velocity Sensor
  • Cable Type:
    Right-Angle Interconnect Cable
  • Cable Length:
    25 feet
  • Maximum Sensor Head Temperature:
    +400°C (+752°F)
  • Internal Electronics Temperature Range:
    -55°C to +121°C (-67°F to +250°F)
  • Recommended Use:
    High-temperature vibration monitoring applications
  • Weight:
    0.1 kg
  • Estimated shipping dimensions:
    25x25x3cm
  • Tariff Code:
    8525891900
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.
Description
The 89477-25 right-angle interconnect cable is an integral component of High Temperature Velomitor Systems, engineered to operate reliably in environments where surface temperatures reach up to +400°C (+752°F). This 25-foot cable permanently connects the high-temperature sensing head to the signal conditioning electronics, allowing the sensitive electronics to be positioned in a cooler location while the sensor remains mounted on hot surfaces. 

The 89477-25 is specifically designed to segregate the sensing element from the signal conditioning electronics, a critical feature for maintaining accurate vibration measurements in extreme thermal conditions. This segregation ensures that the internal electronics, which are rated for temperatures from -55°C to +121°C (-67°F to +250°F), remain within their operational limits even when the sensing head is exposed to much higher temperatures.

When deploying the 89477-25, it is important to note that the cable is permanently integrated into the transducer assembly, which reduces maintenance complexity and improves signal integrity over traditional connector-based systems. 

Installation of the 89477-25 requires careful planning to ensure the cable is routed away from heat sources and protected from physical damage, while also maintaining proper signal transmission characteristics. The right-angle connector design helps in confined spaces and reduces stress on the cable termination points. 
Alternative Names
89477-32 89477-20 89477-07 89477-40
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the primary function of the 89477-25 cable in high-temperature vibration monitoring systems?
The 89477-25 serves as a permanent, integrated interconnect cable that connects the high-temperature sensor head (rated for up to +400°C / +752°F) to the signal conditioning electronics in Bently Nevada's 330750/330752 Velomitor Systems. Its 25-foot length and connectorless design enable reliable signal transmission while allowing the electronics to be mounted in cooler locations.
How does the 89477-25 improve reliability in high-temperature environments compared to traditional cabled sensors?
The 89477-25 eliminates connectors, which are common failure points in high-temperature applications, by using a permanently integrated cable design. It also separates the sensing element from the electronics, ensuring that the internal components (rated for -55°C to +121°C) remain within safe operating temperatures even when the sensor head is exposed to extreme heat up to +400°C.
What are the temperature limits for the sensor head and internal electronics when using the 89477-25?
When used with the 89477-25 in a 330750/330752 system, the sensor head can operate at temperatures up to +400°C (+752°F), while the internal signal conditioning electronics are limited to -55°C to +121°C (-67°F to +250°F). This thermal segregation is enabled by the 89477-25 cable, which allows the electronics to be installed in a cooler environment.
When should I choose a system with the 89477-25 cable versus a standard Velomitor sensor?
The 89477-25 and its associated high-temperature Velomitor system should be selected when the mounting surface temperature exceeds +121°C (+250°F), up to the maximum of +400°C. For environments at or below +121°C, the standard 330500 Velomitor Piezo-velocity Sensor is recommended, as it does not require the specialized high-temperature design of the 89477-25 system.