Samson Media 05 Manuel de service

Translation of original instructions

EB 9520 EN

Media 05 with indicating unit and dp cell,

with valve block and pressure gauge for operating pressure (right)

Edition November 2010

Media05 Differential Pressure and Flow Meter

Note on these mounting and operating instructions

These mounting and operating instructions assist you in mounting and operating the device

safely. The instructions are binding for handling SAMSON devices.

ÎFor the safe and proper use of these instructions, read them carefully and keep them for

later reference.

ÎIf you have any questions about these instructions, contact SAMSON‘s After-sales Service

Department (aftersalesser[email protected]).

The mounting and operating instructions for the devices are included in

the scope of delivery. The latest documentation is available on our website

at www.samson.de > Service & Support > Downloads > Documentation.

Denition of signal words

Hazardous situations which, if not avoided,

will result in death or serious injury

Hazardous situations which, if not avoided,

could result in death or serious injury

Property damage message or malfunction

Additional information

Recommended action

DANGER

WARNING

NOTICE

Note

Tip

2 EB 9520 EN

Contents

EB 9520 EN 3

1 Safety instructions and measures ...................................................................4

1.1 Notes on possible property damage................................................................7

2 Design and principle of operation ..................................................................8

2.1 Technical data .............................................................................................10

3 Installation..................................................................................................12

3.1 Arrangement of instruments for liquid level measurement ................................12

3.2 Arrangementofdevicesforowratemeasurement.........................................12

3.3 Media05indicatingunit ..............................................................................12

3.4 Differential pressure lines..............................................................................14

3.5 Oriceange(oriceplateassembly)............................................................14

4 Accessories .................................................................................................16

4.1 Valve block..................................................................................................16

4.2 Shut-off and equalizing valves ......................................................................16

4.3 Compensation chambers ..............................................................................16

4.4 Accessories for connection............................................................................16

5 Start-up ......................................................................................................18

5.1 Flow rate measurement.................................................................................18

5.2 Liquid level measurement..............................................................................18

6 Operation...................................................................................................19

6.1 Checking zero .............................................................................................19

6.2 Water drainage...........................................................................................19

6.3 Adjusting and modifying the measuring range ...............................................20

7 Version with limit contacts............................................................................22

7.1 Electrical connection.....................................................................................22

7.2 Adjusting the alarm contacts.........................................................................22

7.3 Retrottingorreplacingthecontactunit .........................................................24

8 Dimensions .................................................................................................26

4 EB 9520 EN

Safety instructions and measures

1 Safety instructions and measures

Intended use

The Media 05 Differential Pressure and Flow Meter is used to measure and indicate the dif-

ferential pressure or derived measuring variables for gases and liquids. Typical application

include liquid level measurement on pressure vessels, differential pressure measurement be-

tweenowandreturnowpipes,pressuredropmeasurementonvalvesandltersaswellas

owratemeasurementaccordingtothedifferentialpressuremethod.

Thedeviceisdesignedtooperateunderexactlydenedconditions(e.g.operatingpressure,

process medium, temperature). Therefore, operators must ensure that the device is only used

inoperatingconditionsthatmeetthespecicationsusedforsizingthedeviceattheordering

stage.

Incaseoperatorsintendtousethedeviceinotherapplicationsorconditionsthanspecied,

contact SAMSON.

SAMSON does not assume any liability for damage resulting from the failure to use the de-

vice for its intended purpose or for damage caused by external forces or any other external

factors.

ÎRefertothetechnicaldataforlimitsandeldsofapplicationaswellaspossibleuses.

The Media 05 Differential Pressure and Flow Meter without limit contacts may be used to

measureammablegasesandliquidsinwhichhazardousareaconditionsofZone0areto

be expected, provided the operator observes the applicable regulations for measuring

ammablegasesandliquidsinZone0.Thismeansthatmeasuringinstrumentsuitedforthe

connectiontoZone0canbeinstalledprovided:

1. The pipes connecting the instruments have been sized and installed according to the

German Technical Regulations for Flammable Liquids TRbF 50 or

2. Flamearrestersorenduranceburningamearrestershavebeeninstalledinthetwo

measuring lines.

Whetheryouhavetoinstallamearrestersorenduranceburningamearrestersdepends

ontheconditionsonsite.However,enduranceburningamearrestersarepreferablytobe

installed. You are required to contact the appropriate regulatory authority to agree on the

necessary measures.

Theoperatorisresponsibleformeetingtheabovespeciedrequirementsspecied(1and2).

SAMSON does not assume any responsibility if the operator fails to do so.

EB 9520 EN 5

Safety instructions and measures

Notes concerning oxygen service

Devices intended to measure gaseous oxygen are labeled

Oxygen! Keep free of oil and grease!

These versions are cleaned and assembled under special conditions. When replacing parts

that come into contact with gaseous oxygen, e.g. range springs, wear suitable gloves and

make sure that the parts do not come into contact with oil or grease.

When returning devices for oxygen service for repair, the sender assumes full responsibility

thatthedevicesarehandledtomeetallrequirementsstipulatedbyVBG62orsimilarregula-

tions until they are handed over to the manufacturer. Otherwise, SAMSON does not accept

any responsibility.

Reasonably foreseeable misuse

TheMedia05DifferentialPressureandFlowMeterisnot suitable for the following applica-

tions:

−Useoutsidethelimitsdenedduringsizingandbythetechnicaldata

Furthermore,thefollowingactivitiesdonotcomplywiththeintendeduse:

−Use of non-original spare parts

−PerformingmaintenanceactivitiesnotspeciedbySAMSON

Qualications of operating personnel

Thedevicemustbemounted,startedupandservicedbyfullytrainedandqualiedperson-

nel only; the accepted industry codes and practices are to be observed. According to these

mounting and operating instructions, trained personnel refers to individuals who are able to

judge the work they are assigned to and recognize possible hazards due to their specialized

training, their knowledge and experience as well as their knowledge of the applicable stan-

dards.

Personal protective equipment

We recommend wearing the following protective equipment depending on the process medi-

um:

−Protective clothing, gloves, eye protection and respiratory protection in applications with

hot, cold and/or corrosive media

ÎCheck with the plant operator for details on further protective equipment.

6 EB 9520 EN

Safety instructions and measures

Revisions and other modications

Revisions,conversionsorothermodicationsoftheproductarenotauthorizedbySAMSON.

They are performed at the user's own risk and may lead to safety hazards, for example.

Furthermore, the product may no longer meet the requirements for its intended use. Use of

the device is no longer permitted.

Warning against residual hazards

To avoid personal injury or property damage, operators and operating personnel must pre-

vent hazards that could be caused in the device by the process medium and operating pres-

sure by taking appropriate precautions. They must observe all hazard statements, warning

and caution notes in these mounting and operating instructions, especially for installation,

start-up and service work.

Responsibilities of the operator

The operator is responsible for proper operation and compliance with the safety regulations.

Operators are obliged to provide these mounting and operating instructions to the operating

personnel and to instruct them in proper operation. Furthermore, the operator must ensure

that operating personnel or third persons are not exposed to any danger.

Responsibilities of operating personnel

Operating personnel must read and understand these mounting and operating instructions as

wellasthespeciedhazardstatements,warningandcautionnotes.Furthermore,theoperat-

ing personnel must be familiar with the applicable health, safety and accident prevention

regulations and comply with them.

Referenced standards and regulations

DeviceswithaCEmarkingfullltherequirementsoftheDirective2014/30/EU.TheEU

declaration of conformity is included at the end of these instructions.

Referenced documentation

Thefollowingdocumentsapplyinadditiontothesemountingandoperatinginstructions:

−Mounting and operating instructions for mounted pipeline valves (strainers, shut-off

valves etc.)

EB 9520 EN 7

Safety instructions and measures

1.1 Notes on possible property damage

NOTICE

Notes concerning oxygen service

ÎDevices intended to measure gaseous oxygen are labeled

Oxygen! Keep free of oil and grease!

These versions are cleaned and assembled under special conditions. When

replacing parts that come into contact with gaseous oxygen, e.g. range springs,

wear suitable gloves and make sure that the parts do not come into contact with oil

or grease.

ÎMake sure that the dp cell and all SAMSON accessories only come into contact with

gaseous oxygen.

ÎWhen returning devices for oxygen service for repair, the sender assumes full

responsibility that the devices are handled to meet all requirements stipulated by

VBG62orsimilarregulationsuntiltheyarehandedovertothemanufacturer.

Otherwise, SAMSON does not accept any responsibility.

Risk of damage to the differential pressure and ow meter due to impermissible

negative pressure (vacuum) in the measuring chambers.

A negative pressure in the measuring chambers is not permissible during operation.

ÎThefollowingapplies:operating pressure ≥ atmospheric pressure.

A vacuum in both measuring chambers for a brief period of time, e.g. to clean tanks,

is permissible.

Incorrect operation in cryogenic applications will damage the differential pressure

and ow meter and will lead to malfunction.

In cryogenic applications, the process medium circulates during measurement when

the equalizing valve is opened, causing the valve block to ice up.

ÎDuring measurement, the equalizing valve must be closed and the shut-off valves

open.

8 EB 9520 EN

Design and principle of operation

2 Design and principle of

operation

The Media 05 Differential Pressure and Flow

Meter is used to measure and indicate the

differential pressure or derived measuring

variables for gases and liquids. Typical

application include liquid level measurement

on pressure vessels, differential pressure

measurementbetweenowandreturnow

pipes, pressure drop measurement on valves

andltersaswellasowratemeasurement

according to the differential pressure

method.

The device comprises a differential pressure

cell including a measuring diaphragm and

range springs as well as an indicating unit

including a pointer mechanism and dial

plate.

Thedifferentialpressure∆p=p1–p2

producedattheoriceplatecreatesaforce

at the measuring diaphragm (1.5), which is

opposed by the range springs (1.4).

The movement of the measuring diaphragm

and lever (1.8), which is proportional to the

differential pressure, is routed from the pres-

surechamberbyaexibledisk(1.9)and

transmitted to the pointer mechanism (2.2).

The differential pressure is shown linear on

thedialandtheowrateisshownasa

square root graduation.

Version with limit contacts

The gear segment (2.1) supports the metal

tags (3.1) and activates the alarm contacts

by moving the metal tags into the adjustable

proximity switches (3.2).

Whenthemetaltagenterstheinductiveeld

of the associated proximity switch, it as-

sumes a high resistance (contact open).

When the metal tag leaves the inductive

eld,itassumesalowresistance(contact

closed).

The switching function is triggered when the

metal tag leaves or enters the proximity

switches (depending on the setting of the

contacts).

EB 9520 EN 9

Design and principle of operation

2.3

2.2

2.1

3.1

3.2

A1 A2

1.1

1.3

1.4

1.9

1.8

1.2

1.6

1.5

Differential pressure cell

1.1 dp cell

1.2 High-pressure chamber

1.3 Low-pressure chamber

1.4 Range springs

1.5 Measuring diaphragm

1.6 Diaphragm plates

1.7 Diaphragm stem

1.8 Lever

1.9 Flexible disk

Housing of indicating unit

2.1 Gear segment

2.2 Pointer mechanism

2.3 Dial plate

Limit contact (alarm contact)

3.1 Metal tag

3.2 Proximity switches for alarm contacts A1

and A2

Fig.1: Functional diagram: version with two alarm contacts

10 EB 9520 EN

Design and principle of operation

2.1 Technical data

All pressure in bar (gauge); all errors and deviations are specied in % of the adjusted mea-

suring span.

Media05 Differential Pressure and Flow Meter

Nominal range mbar 0 to

0 to

100

0 to

160

0 to

250

0 to

400

0 to

600

0 to

1000

0 to

1600

0 to

2500

0 to

3600

Adjustable

measuring span

(mbar)

Max. 40

110

100 to

176

160 to

275

250 to

440

400 to

660

600 to

1100

1000

1760

1600

2750

2500

3960Min.

Accuracy class in % ±4 ±2.5

Pressure rating PN 50, overloadable on one side up to 50 bar

Indicator 250°scale,approx.162mmscalelength,0to100%linearorsquare

root scale division for any linear measured variable, for measured

variables based on equations, curve or table

Characteristic Characteristic linear to differential pressure, scale linear to tank

content

Deviation from terminal-

based linearity <±2.5%1) (including hysteresis)

Sensitivity <0.25%(with0to60mbarnominalrange:<0.5%)

Effect of static pressure <0.03%/1bar<0.5%

Limit contacts TwoinductivealarmcontactsA1andA2acc.toEN60947-5-6

Control circuit Valuescorrespondingtoconnectedisolatingswitchampliere.g.

KFA6-SR2-Ex2.W

Proximity switch SJ2-SN, for hazardous areas according to PTB 00 ATEX 2049 X

Switching accuracy <±2%

Dead band, approx. <0.6%

Perm. ambient temperature –40to+80°C;foroxygen–40to+60°C

Perm. storage temperature –40to+100°C

When used with gaseous

oxygen as the process

medium

Max.temperature:+60°C·Max.oxygenpressure:30bar

Note

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