Microsensor MPM480 Operation Manual page 18

6.2 Maintenance
MPM480 Piezo-resistive pressure transmitter is the compact
measurement device, please pay attention to the following items in the
operation:
a) If the pressure-leading hole is jammed or the diaphragm is dirty,
please clean them with impregnant which is compatible with
transmitter construction material. Do not poke pressure-leading
hole with hard object or brush diaphragm.
b) Other cable in the transmitter is for our company's adjustments, do
not connect it at will to protect the transmitter.
c) The transmitter and the external circuit connect through the
special plug seat, When the installation of electrical connection is
completed, be sure to tighten the socket nut and cable fastening
nut to ensure that the transmitter protection level.
d) Transmitter and external circuit connect through cable, the
transmitter's cable has a vent pipe, is used to make the gauge
pressure sensor back pressure chamber connect to the
atmosphere. When Installation and use of the transmitter, must
ensure that the tube can not be blocked or water inflow, and it
must be connected to the atmosphere, to ensure the protection
of the
measurement.Otherwise it will cause damage to the transmitter.
product and the accuracy
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of the output