Samson Media 05 Service manual

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.
7
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
60
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
to
66
60
to
110
100 to
176
160 to
275
250 to
440
400 to
660
600 to
1100
1000
to
1760
1600
to
2750
2500
to
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