Products Introduction
The Emerson Epro PR9268/300-000 is an Electrodynamic Velocity Sensor. This product is widely applied in equipment such as steam turbines, compressors, pumps, and fans in the industrial field. It can be used for equipment condition monitoring, fault early warning, and protection systems. The core principle is to convert the mechanical vibration speed into an electrical signal output through electromagnetic induction, and the signal is directly proportional to the vibration speed.
Advantages
Improves equipment reliability and uptime
Reduces maintenance and operational costs
Enables early fault detection
Suitable for continuous industrial monitoring
Easy installation and integration
PR9268/300-000 adopts the electro-dynamic measurement principle, which can directly convert mechanical vibration into an electrical signal output proportional to the speed.
This sensor is used to measure the absolute vibration speed of the equipment casing or bearing seat, and can directly reflect the overall mechanical condition of the equipment.
Parameter Value
Model PR9268/300-000
Measuring Principle Electrodynamic
Sensitivity 28.5 mV/mm/s (±5%)
Frequency Range 4 – 1000 Hz
Measuring Range Up to 1500 µm
Output Signal 4–20 mA
Power Supply 24 V DC
Operating Temperature -40°C to +80°C
Protection Class IP65 / IP67
Housing Material Stainless Steel
The EPRO PR9268/300-000 velocity sensor is ideal for monitoring vibration in:
The sensors are installed on the equipment casing
It is installed using threads or brackets.
The measurement is: the absolute vibration of the equipment (casing vibration).
Typical equipment:
Steam turbine
Compressor
Pump / Fan
Connection relationship with the monitoring system (rack/cabinet)
It is the "front-end detector" on the on-site equipment.
The rack is equipped with monitoring modules (cards).
PR9268 is often used in combination with:
MMS system (EPRO rack)
or other vibration monitoring systems
Application cases
In the steam turbine or gas turbine systems of power plants in Indonesia, the equipment is usually operating under high-speed, continuous conditions with frequent load fluctuations. Any issues such as rotor imbalance, bearing wear, or misalignment can cause severe vibration problems within a short period of time.
PR9268/300-000 is usually installed at the casing or bearing seat position in this scenario, to collect the absolute vibration velocity signal of the casing. Its electrodynamic measurement principle can directly output an electrical signal proportional to the vibration velocity, enabling the control system to determine the operating status of the equipment in real time. This signal will be connected to the vibration monitoring system or DCS system. When the vibration amplitude exceeds the set threshold, the system can trigger an alarm or even trigger an interlock shutdown, thereby avoiding serious accidents such as blade damage or shaft breakage.
In the petrochemical and natural gas transmission systems of Iran, large centrifugal compressors and multi-stage pump units are key continuous operation equipment, usually operating under high pressure and high flow conditions for a long time.
Common faults of such equipment include bearing wear, cavitation, unbalanced impellers, and structural vibration problems caused by stress transmission in the pipeline.
PR9268/300-000 is used in this scenario to collect the vibration velocity of the equipment shell. Through continuous monitoring of the vibration signal, it can reflect the trend of changes in the overall mechanical condition of the equipment.
Logically in the system, it provides "trend-based health signals" rather than a single instantaneous alarm signal. Engineers can determine the deterioration process of the equipment through long-term data changes, and thus arrange maintenance in advance instead of waiting for a failure to occur.
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