Vega VEGADIF 65 Chemical seal CSB Bedienungsanleitung PDF herunterladen (Seite 15)

4 Mounting

Chemical seal CSB • for VEGADIF 65

36133-EN-130417

4 Mounting

4.1 Application conditions

Beforemounting,setupandoperation,takenotethatthepressure

transmitter as well as the chemical seal were selected according to

measuringrange,versionandmaterialsuitablefortheprocesscondi-

tions. The load limits must be maintained in order to guarantee the

speciedaccuracy.

Caution:

Indangeroussubstancessuchase.g.oxygen,acetylene,combusti-

bleortoxicproductsaswellasinrefrigeratingplants,compressors,

etc.,thepertinentinstructionsmustbeobservedinadditiontothe

general regulations.

Take note of the following issues in respect to the process and ambi-

ent temperature:

•

Mountthedierentialpressuretransmitterinsuchawaythatthe

permissible process and ambient temperature limits are neither

underrun nor exceeded.

•

Taketheinuenceofconvectionandheatradiationintoaccount

•

Whenselectingthechemicalseals,makesurethatthettingsand

angesarepressureandtemperatureresistant

•

For this purpose select the suitable material and pressure stage

•

Mount in such a way that plus and minus side have the same

ambienttemperaturestokeepthetemperatureinuenceslow

4.2 Instructions for handling

•

Instrumentsmustbeprotectedagainstsoilingandstronguctua-

tions of the ambient temperature

•

Leave the measuring system in the packaging until mounting to

protect it against mechanical damages

•

Whenremovingthepackagingandwhenmounting,takespecial

care to avoid mechanical damage and deformation of the dia-

phragm

•

Do not carry the pressure transmitter by holding the capillary line

•

Donotbentthecapillarylines.Kinkscancauseleakageandlead

to an increase in response time

•

Never loosen sealed screws on the chemical seal or the pressure

transmitter

•

Do not damage the isolating diaphragm: scratches on the isolating

diaphragm(e.g.fromsharpsubjects)arethemainareaswhere

corrosion can occur

4.3 Mounting instructions

•

Suitable seals must be selected for sealing

•

Forangemounting,useasealwithasucientlylargeinnerdiam-

eter and place the seal centrically; contact with the diaphragm will

cause measurement deviations

Suitability for the process

conditions

Process and ambient

temperature

Sealing

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