Sensors for speed measurements
Choosing the right speed sensor for turbomachinery is of crucial importance for an accurate and reliable measurement. After all, the signal of the sensor is the input for an overspeed…
Machine protection
5 speed-related failures with rotating machinery
Rotating machinery such as turbines, pumps and compressors are continuously subjected to major mechanical forces. As most of these machines are critical to the process, systems are implemented with protection…
4 reasons why overspeed protection systems should not be overly complex
Overspeed protection systems have one of the most important functions regarding safety measures for rotating machinery. As such, these systems require advanced safety functions to detect overspeed and excessive acceleration…
A modern approach for overspeed protection
The leading standard for rotating machinery (API 670) states that (critical) rotating machinery requires a state-of-the-art overspeed protection system. The availability of electrical overspeed protection systems has grown ever since…
Proof tests of an overspeed detection system (ODS) using an on-board function generator
There are several overspeed detection systems (ODS) on the market that are equipped with an on-board function generator for online test purposes, and this feature is frequently found in ODS…
What does the API Standard 670 state about overspeed detection systems?
The API Standard 670 is an industry standard and describes the minimum requirements for a machine protection system (MPS). This includes, measuring radial shaft vibration, casing vibration, axial shaft position,…
The difference between SIL certification by design and proven in use
End-users that operate (critical) rotating machinery have a legal obligation to implement a suitable and verifiable safety instrumented system (SIS). Safety Integrity Level (SIL, IEC 61508), one of the more…
3 types of target objects for speed measurements
To measure the rotational speed of a shaft, it is necessary to have the right target for the contactless-sensing speed sensors to be able to generate an accurate signal. In…
FT3000 announced obsolete by OEM, replaced by SpeedSys
The FT3000 overspeed protection system, formerly supplied by the Jaquet Technology Group (now: TE Connectivity), has been discontinued by the manufacturer. Its obsolescence affects many end-users as the Jaquet FT3000…
Mechanical overspeed protection or electronic overspeed protection?
In the past, overspeed turbine protection systems were often designed by the turbine OEMs themselves as part of the mechanical system. These mechanical protection systems are still in use, especially…
