为什么我的低差压换能器没有给我预期的输出?

If the unit seems to be "reading" the opposite of what is expected, check that it is plumbed correctly: the space to be monitored is plumbed to the HI port and the reference space is plumbed to the LO port.

If the output seems to be twice or half of what it should be, check the range of the unit: is it bi-directional or uni-directional?

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