Monnit Standard Vibration Sensors and ISO 10816
Vibration Monitoring has its roots in maintenance engineers inspecting machines during their traditional walk around. It attempts to formalize an instinctive understanding that a machine is vibrating unusually.
ISO 10816 establishes the general conditions and procedures for measurement and evaluation of vibrations from the non-rotating parts of machines (essentially the vibrations transmitted from the moving/rotating parts of the machine to the non-moving parts of the machine).
Standards provide guidance for machines operating in the 10 to 200 Hz (600 to 12,000 RPM) frequency range. Examples of these types of machines are small, direct-coupled, electric motors and pumps, production motors, medium motors, generators, steam and gas turbines, turbo-compressors, turbo-pumps and fans. Some of these machines can be coupled rigidly or flexibly, or connected through gears. The axis of the rotating shaft may be horizontal, vertical or inclined at any angle.
ISO 10816-3 defines four groups of machines, ranked according to size, base and purpose. It separates the working conditions into four zones:
- (Zone A Green): vibration values from machines just put into operation
- (Zone B Yellow): continuous operation without any restrictions
- (Zone C Orange): condition is acceptable only for a limited period of time
- (Zone D Red): dangerous vibration values - damage could occur at any time
Monnit’s Standard Vibration sensor (with a frequency range of 10 to 200 Hz and vibration range from 0 to 600 mm/s (¹) is well suited to measure systems identified by ISO 10816-1.
For more advanced vibration analysis needs see the Advanced Vibration sensor.
ISO 10816 table
1. The latest version of firmware and iMonnit software is capable of measuring up to 600 mm/s. Firmware versions before 188.8.131.52 are not capable of measuring above 25.5 mm/s.