The equipment noise is said to not exceed 85 decibels according to national standards; where is the measurement taken?
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1. Many equipment manufacturers claim that the operating noise level of their equipment does not exceed 85 decibels, which meets **the regulations**; but what exactly is that **standard**? 2. Where is the measurement location? Only by fixing the position can we take accurate measurements to determine whether the values provided by the equipment manufacturer are indeed below the 85 decibels they claim. What I’ve heard before is that it should be at a distance of 1 meter from the device and at a height of 1.5 meters – is this position correct? Which standard does it come from? Thank you all for your strong support! Thank you.
At a distance of 1 meter from the equipment, the national standards are not clear; both the petrochemical and chemical industries have regulations related to occupational health. I’ve forgotten the specific standard numbers, but they can be found by searching online
We are all within 85 dB at a distance of 1 m from the device
At what height is it measured? 1 meter is only a horizontal distance. Thank you.
It’s as tall as the equipment is, from top to bottom
Are there any **or industry standards that can be used as a reference?
This post was last edited by Akatram on 2016-12-30 at 12:12. The horizontal distance is 1 m, and the height of the pump’s axis above the sound reflecting surface (the ground) corresponds to the center height of the pump. When the center height of the pump is less than or equal to 1 m, the measurement point height is specified as 1 m. When the center height of the pump is greater than 1 m, the height of the measurement point is the same as the center height. JB/T8098