Start Condition Monitoring with Vibration Sensors
Using ISO standards to establish baselines and optimize machine health

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IIOT (Industrial internet of things) has gained much traction and attraction in past years. With industries getting their assets online for monitoring purposes and new IO-Link sensors providing a ton of information on a single package, monitoring machines has become economically feasible.
Vibration is one of the most critical metrics regarding the health of machines, providing early detection of potential faults – before they cause damage or equipment failure. But since this is a relatively new field and use case, there is not much information about it. Most customers are confused about where to start. They want a baseline to begin monitoring machines and then finetune them to their use case.
"Vibration is one of the most critical metrics regarding the health of machines..."
One approach to solve this is to hire a vibration expert to determine the baseline and the best location to mount the vibration measuring sensor. Proper setup increases the threshold of getting into condition monitoring as a new user figures out the feasibility of such systems.
I direct my customers to this standardized baseline chart from ISO, so they can determine their own baselines and the best mounting positions for their sensors. The table shows the different standards for severity for different machine classes. These standards detail the baseline vibration and show the best place to mount the sensor based on the machine type.
ISO 7919 Series | Mechanical vibration of non-reciprocating machines |
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7919-1:1996 | Part 1: General Guidelines |
7919-2:2001 | Part 2: Land-based steam turbines and generators in excess of 50 MW with normal operating speeds of 1500 r/min, 1800 r/min, 3000 r/min and 3600 r/min |
7919-3:1996 | Part 3: Coupled industrial machines |
7919-4:1996 | Part 4: Gas turbine sets |
7919-5:1997 | Part 5: Machines set in hydraulic power generating and pumping plants |
ISO 10816 Series | Mechanical vibration |
10816-1: 1995 | Part 1: General Guidelines |
10816-2: 2001 | Part 2: Land-based steam turbines and generators in excess of 50 MW with normal operating speeds of 1500 r/min, 1800 r/min, 3000 r/min and 3600 r/min |
10816-3: 1998 | Part 3: Industrial machines with normal power above 15kW and nominal speeds between 120 r/min and 15000 r/min when measured in situ |
10816-4: 1998 | Part 4: Gas turbine sets excluding aircraft derivatives |
10816-5: 2000 | Part 5: Machines set in hydraulic power generating and pumping plants |
10816-6: 1995 | Part 6: Reciprocating machines with power ratings above 100kW |
10816-7 | Part 7: Rotodynamic pumps for industrial application |
Table 1 - ISO Standards for Evaluation of Vibration Severity
Keywords
- Condition monitoring
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Anjesh Shekhar
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