Vaisala HMP228 Guía de usuario descargar pdf (Pagina 12)

User's Guide _______________________________________________________________________

10 ____________________________________________________________________M210498en-A

CHAPTER 4

INSTALLING THE PROBE

Selecting a place for the probe

Select a place which gives a true picture of the process. Oil should

circulate freely around the sensor; a rapid oil flow is recommended. Install

the probe directly into the circulation system and not into the oil reservoir

because of deposition.

It is recommended that the sensor head is installed directly in the process

through the ball valve assembly. When the ball valve assembly is used, the

pipe does not have to be emptied or shut down for installation or removal

of the probe. Install the sensor head transversely against the direction of

the process flow. Avoid installing into a bend in the pipe.

NOTE

Take care not to damage the pipe of the probe. If the

pipe is damaged, the probe head is less tight and will

not go through the clasp nut. Make sure that the

filter is tightly fastened to protect the sensors.

Mounting the probe for pressurized pipelines/oils

Due to the sliding fit, the MMP78 is easy to install into and remove from

the pressurized process. The probe is especially suitable for the

measurements in pipelines. The maximum installation pressure is 10 bar

and the maximum operation pressure is 20 bar.

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Vaisala HMP228 Guía de usuario Pagina 12