Product Introduction
The Bently Nevada 21504-000-012-10-02 7200 8mm Standard Mount Probe is a precision
proximity sensor designed for critical machinery monitoring in
industrial environments. This double probe offers dual measurement
capabilities, providing redundancy and enhanced reliability in
vibration and position monitoring for rotating machinery. Built to
withstand extreme operational conditions, the sensor is suitable
for applications where accurate shaft position or vibration
measurement is essential for maintenance and safety.
The design incorporates robust materials and high-precision eddy
current sensing technology, ensuring consistent performance under
high-speed rotation, variable temperatures, and challenging
installation environments. With its dual-probe configuration, this
sensor allows either simultaneous measurement of two separate
parameters or backup sensing, improving reliability in critical
machinery applications such as turbines, compressors, and
generators.
Technical Specifications
| Parameter | Specification |
|---|
| Model Number | 21504-000-012-10-02 |
| Type | 7200 8mm Standard Mount Probe |
| Measurement Principle | Eddy Current / Proximity Sensing |
| Probe Material | Stainless Steel / High-Temperature Alloy |
| Cable Type | Shielded, Twisted Pair |
| Total Length | 1.0 meter |
| Operating Temperature | -40°C to +120°C |
| Frequency Response | DC to 25 kHz |
| Sensitivity | 50 mV/mil typical |
| Gap Range | 0.1 mm to 2.0 mm |
| Linearity | ±1% of full scale |
| Maximum Shaft Speed | 50,000 RPM |
| Output Impedance | 100 Ohms |
| Weight | 0.22 kg |
| Environmental Protection | IP67 / NEMA 4X |
| Mounting Style | Threaded or Flanged |
Applications
The P1407030-02006 Double Probe is widely used for condition monitoring of critical rotating
machinery where high reliability is required. Typical applications
include:
Steam and gas turbines in power generation facilities
Compressors in oil and gas, chemical, and petrochemical plants
High-speed electric motors and generators
Process pumps and other rotating equipment in industrial plants
Offshore oil and gas machinery requiring redundant sensing
Applications requiring dual measurement of the same shaft for
safety-critical monitoring
This probe is especially beneficial in environments where early
detection of vibration anomalies or misalignment is crucial to
prevent catastrophic failures.
Advantages
The P1407030-02006 offers several technical and operational advantages:
Redundant Measurement Capability: Dual probes allow simultaneous sensing or backup to enhance
reliability.
High Accuracy: Eddy current sensing ensures precise, repeatable measurements
across variable gaps and speeds.
Robust Construction: Durable materials resist vibration, temperature extremes, and
harsh environments.
Flexible Installation: Threaded and flanged mounting options with customizable cable
lengths.
Enhanced Safety: Provides reliable monitoring for critical machinery where failure
prevention is essential.
Low Maintenance: Shielded cables and corrosion-resistant materials reduce
environmental wear.
These sensors are used to monitor the casing vibration of large and
medium-sized rotating machinery, including steam turbines, water
turbines, fans, compressors, turboexpanders, motors and generators,
exciters, gearboxes, water pumps, etc. They are widely applied in
industries such as electric power, petroleum, chemicals, and
metallurgy, as well as in some scientific research institutions.
The Accelerometer 200150 is exclusively used with compatible
Transducer Interface Modules (TIMs) in the Trendmaster Pro
quasi-continuous online condition monitoring system. The specific
frequency response of this accelerometer is only suitable for
general application scenarios. When monitoring machines with
relatively slow rotational speeds, please use the 200155
accelerometer together with a properly configured proTIM. For
acceleration envelope applications, use the 200157 accelerometer
with a properly configured proTIM.
The piezoelectric sensing device in the 20015x series
accelerometers generates an electric charge when subjected to
vibration. The 20015x accelerometers are housed seismic sensors
suitable for general purposes, featuring a wide frequency range.
When used in conjunction with Trendmaster® proTIMs, these
accelerometers can convert the generated charge into a differential
voltage signal that is proportional to the acceleration parallel to
the sensor’s sensitive axis.
The 20015x accelerometers have a hermetically sealed, stainless
steel housing, making them highly robust and ideal for use in harsh
industrial environments. A 5-pin connector mounted on the top of
the sensor allows for easy installation and removal of
interconnecting signal cables. A 3/8-24 threaded hole at the bottom
of the sensor housing supports multiple mounting options.
The 200350 and 200355 accelerometers are housed vibration sensors
designed for general applications. They are used in combination
with Trendmaster Pro.
The low-frequency velocity sensor is specifically designed for
hydraulic applications to detect vibrations in stator cores, stator
frames, and bearing supports. Accessory housings, mounting kits,
and other accessories can protect your sensor system assets and
enable faster, more convenient installation.
This sensor measures absolute vibration in the frequency range of
0.5 Hz to 1.0 kHz. Its dual-wire design adopts moving-coil
technology and built-in signal conditioning circuitry to provide a
voltage output proportional to vibration velocity. The sensor is
used with the 3500/46M Hydraulic Monitor.
- Sensitivity: 20 mV/(mm/s) (508 mV/(in/s)) ±10%
The 330450 high-temperature accelerometer isolates the sensing
element from the signal conditioning electronics.
The 330400/330425 accelerometers are specifically designed for
measuring the acceleration of general-purpose casings and meet all
requirements of API 670.
The 190501 Velomitor® CT is a low-frequency sensor specifically
designed for monitoring cooling towers, capable of detecting
rotational speeds as low as 90 rpm.
These systems are intended for applications where the ambient
temperature is significantly higher than the operating range of
other Velomitor® sensors.
GE’s new Bentley Nevada radiation-resistant Velomitor® sensor is
specifically designed for the harsh environments of nuclear power
plants.
The 330525 Velomitor® XA is a rugged environmental piezoelectric
velocity sensor. It is an enhanced version of the 330500 Velomitor®
sensor, designed to meet NEMA 4X and IP65 ratings for applications
without an additional housing.
The 330500 Velomitor® is a general-purpose velocity sensor,
suitable for frequencies ranging from 4.5 Hz to 5000 Hz.
The Velomitor® 350900 is a high-temperature sensor for both
velocity and acceleration measurement. It is specifically designed
for use in gas turbines.