T 9520 EN
Media 05 Differential Pressure and Flow Meter
Indicator 100 Ø · PN 50

Application
Device for measuring and indicating the differential pressure or measured variables derived from it · Suitable forgases or liquids · Measuring spans between 0 to 40 and 0 to 3600 mbar · Static pressures up to 50 bar · Optionallywith limit switch with max. two inductive alarm contacts

Measurement tasks–

Liquid level measurement in pressure tanks, especially forcryogenic gases–

Differential pressure measurement between flow andreturn flow pipe–

Pressure drop measurement across valves and filters–Flow rate measurement according to the differential
pressure method

12Special features•

Suitable for liquids, gases or vapors•

Limit switch (optional) with max. two alarm contacts canbe subsequently installed•

Adjustment of measuring span 1:1.6•

Overloadable on one side up to the permissible staticpressure•

Housing of indicating unit with burst protection•

Housing with degree of protection IP 54•

Pressure rating PN 50•

Housing suitable for field and panel mounting•

Directly connectable (flange) valve block (optional) withconnection to monitor the tank pressure and with connection for pressure switch

3512345Versions (Fig. 1)–Media 05 · Indicator NG 100 with pointer mechanism · dp cell made of CW617N (brass), PN 50 · Free ofoil and grease for oxygen · Measuring ranges from 40 to3600 mbar · ECO measuring diaphragm · Zero adjustment at the front · Process connections G 3/8 ADials · Scale 0 to 100 % linear or square root graduation,
dial plates according to DIN EN 837-3, detachable dial
plates for different media, special dial plates

Housing of indicating unitDifferential pressure cell
Valve block with pressure gauge and shut-off valves
Pressure gauge NG 63 for operating pressure
Screw fittings

Fig. 1: Media 05 with valve block and pressure gauge for
operating pressure–

Inductive limit contact with max. two alarm contacts A1/A2 (proximity switches) · Version for hazardous locations–

Valve block which can be directly mounted onto Media 05
devices–Screw fittings–

Pressure gauge

Options available:–

4

SAMSON AKTIENGESELLSCHAFT · Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany
Phone: +49 69 4009-0 · Fax: +49 69 4009-1507 · samson@samsongroup.com · www.samsongroup.com

Edition July 2021

Special versions on request
Principle of operation (see Fig. 3)
The dp cell works according to the deflection method and contains an ECO measuring diaphragm (1.5) which is designed
to handle measuring spans from 40 to 3600 mbar. The diaphragm stem (1.7) is connected to a lever (1.8) and is supported and guided by the range springs. The lever leads thedeflection of the measuring system out of the pressure chamber. The pressure chamber is sealed by a flexible disk (1.9).
The range springs, which are connected to the housing andthe diaphragm ensure that the position of the lever is independent of the static pressure. The dp cell can be overloaded on
one side as the measuring diaphragm flexes against the housing wall whenever the measured values are out of range.
The differential pressure ∆p = p1 – p2 creates a force at themeasuring diaphragm (1.5), which is opposed by the rangesprings (1.4). The movement of the measuring diaphragm andlever (1.8), which is proportional to the differential pressure, istransferred by the adjustable transmission element (2.1) andpointer mechanism equipped with jewel bearings (2.2) to thepointer (2.4). The range springs (1.4) installed in the dp cell
determine the upper and lower limit of each measuring span(measuring span limit) of the device. The span can be continuously adjusted within these limits in the ratio of 1:1.6 at thetransmission element. This adjustment changes the transmission ratio between the lever (1.8) and the pointer mechanism(2.2).

Location of alarm contacts A1/A2, dial plate cover removed
Fig. 2: Alarm contacts in the housing of the indicating unit

Indicator

2.3
2.2
2.1
3.1
3.2
3.3
dp cell

Version with limit switch

The inductive alarm contacts A1/A2 can be adjusted over thewhole measuring range as required. They provide a signal
when the differential pressure either increases or decreases
and the metal tags enter or leave the inductive field of theswitch.
The contacts can be pushed manually to the required switching position. Isolating switch amplifiers conforming toEN 60947-5-6 must be connected in the output circuit of theinductive alarm contacts to ensure they meet the operational
requirements of any connected control and signaling equipment.

1.8

A2

1.9

1.3

1.2

1.4

1.7
1.6
1.5

Valve block
4.1

(–)
p2

Limit switch with alarm contacts A1/A2– Media 05, version with limit switch –A1
1.1

Maximum two alarm contacts (A1, A2) can be installed. Thegear segment (2.1) supports the metal tags (3.2) and activatesthe limit switch unit by moving the metal tags into the adjustable proximity switches (3.3).
When the metal tag enters the inductive field of the associatedproximity switch, it assumes a high resistance (contact open).
When the metal tag leaves the inductive field, it assumes alow 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.

A2

A1(+)
p1

1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9

Differential pressure cell
dp cellHigh pressure chamber
Low pressure chamber
Range springs
Measuring diaphragm
Diaphragm plates
Diaphragm stem
Lever
Flexible disk

2
2.1
2.2
2.3
33.1
3.2
3.3

Housing of indicating unit
Gear segment
Pointer mechanism
Dial plate
Limit switch (optional)
Shaft of measuring unit
Metal tag
Proximity switches A1/A2

4
4.1

Valve block (accessories)
Valve block with pressure gauge, shut-off
valves and screw fittings

Fig. 3: Functional diagram of version with limit switch

2T 9520 EN

Table 1: Technical data · All pressure stated as gauge pressure
Media 05 Differential Pressure and Flow Meter
Measuring range in mbar
Measuring span in mbar

0 to 60min.
max.

Accuracy

0 to100

40 to 66 60 to 110

0 to1600 to250

0 to
400

0 to
600

0 to
1000

0 to
1600

0 to
2500

0 to3600

100 to176

160 to275

250 to440

400 to660

600 to1100

1000 to1760

1600 to2750

2500 to3960±4 %±2.5 %

Pressure rating

PN 50, overloadable on one side up to 50 bar

Indicator

Ø100 mm

Characteristic

Output and reading linear to the differential pressure

Deviation from terminal-based
linearity
Sensitivity<±2.5 % including hysteresis 1)<±0.5 %

<0.25 %

Effect of static pressure<0.03 %/1 bar

Use of Media 05 with gaseous
oxygenMax. temperature
max. oxygen pressure+60 °C
30 barPermissible ambient temperaturerange
For oxygen–40 to +80 °C–40 to +60 °C

Perm. storage temperature range–40 to +100 °C

Degree of protection according toDIN 40050

IP 54

WeightWithout SAMSON valve blockwith SAMSON valve block

Approx. 2.6 kg
Approx. 4.6 kg

Limit switch (option)
Principle of operation

Max. 2 inductive alarm contacts A1 and A2 acc. to EN 60947-5-6 (limit contacts)

Control circuit

Values corresponding to connected isolating switch amplifier 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 %

Based on upper measuring range value1)

Note–All errors and deviations are specified in % of the adjusted measuring span.

–

Refer to Data Sheet u T 9550 for flow rate measurement.

–

A correction of the measuring span is possible by changing the ratio in the limits of approx. 1:1.6.

–

The Media 05 Differential Pressure and Flow Meter without limit switches may be used to measure flammable gases and liquids
in which hazardous area conditions of Zone 0 are to be expected. The relevant regulations on the measurement of flammablegases and liquids of Zone 0 must be observed.

–Oxygen service: When the device is used for oxygen service, make sure that the dp cell and any SAMSON accessories (e.g.
valve block) only come into contact with gaseous oxygen.

–

Refer to u EB 9520 for more details.

Table 2: Materials
Media 05 Differential Pressure and Flow Meterdp cell
Measuring diaphragm and seals
Springs, diaphragm plates and functional parts, lever
Housing of indicating unit1)

CW617N (brass) or CrNi steel
ECO 1)
CrNi steel
Polycarbonate

Other on request

T 9520 EN3Terminal assignment

Installation– Only for version with inductive limit contact –Wall/panel mounting · Using two M8 tapped holes located at
the rear of the dp cell or two Ø 8.3 mm holes in the valve
blockElectrical connection
The device can be equipped with maximum two alarm contacts. The alarm contacts A1 and A2 of the indicator must beconnected to an isolating switch amplifier for power supplyconnection. We recommend using isolating switch amplifersfrom Pepperl + Fuchs. For two contacts, e.g. KFA6-SR2-Ex2.Wand for one contact, KFA6-SR2-Ex1.W.
Switching characteristic of the proximity switches with normally closed function
Metal tag outside inductive field · Switching signal “ON” (Lsignal)
Function: Contact closed or output effectively conducting. Low
resistance (undamped), power consumption ≥ 3 mA
Metal tag inside inductive field · Switching signal “OFF” (0signal)
Function: Contact opened or output effectively non-conducting. High resistance (damped), power consumption ≥ 1 mA

Pipe mounting with mounting part and clamp for attachment
to a vertical or horizontal 2” pipe.
Housing with burst protection in the rear wall of the indicator
unit.
Process medium connection: Tapped hole ISO 228 G 3/8
Accessories
The SAMSON product range includes a wide assortment ofaccessories (e.g valve blocks, pressure gauges, high-pressure
valves, condensation chambers, screw joints with restrictions,contact retrofit kits, range springs etc.) for the Media series.
Refer to Data Sheet u T 9555 for further details.
Refer to Data Sheet u T 9545 for a description of dial plates
available at SAMSON.

The listed maximum values in the table apply concerning theconnection of proximity switches to certified intrinsically safe
circuits in the type of protection Ex ia IIC T6 (PTB 00 ATEX
2049 X):
Table 3: Connection values for intrinsically safe circuits
CircuitType 1

Type 2Ui

16 V

16 VIi

25 mA

25 mA

Pi

34 mW

64 mW

Ci

50 nF

50 nF

Li

250 μH250 μH

Temperature
class

T6

T5

T4

T6

T5

T473 °C

88 °C

100 °C

66 °C

81 °C

100 °CElectrical connection of alarm contacts
Limit switch with two alarm contacts A1/A2– Terminal assignment –4142 51 52++–A1–A2Isolating switch
amplifier acc. toEN 60947-5-6

Fig. 4: Terminal assignment of A1 and A24T 9520 EN

Dimensions in mm

212.5

Ø110_31+

Pressure gauge connection G ½-LH withcoupling sleeve G ½ for pressure gauge
NG 100 and 12x2 O-ring as well as for
G ¼ for pressure gauge NG 63 with G ¼
seal

60

T 9520 EN5

Pipe mounting

129.5
80(200)Ø103

Valve block when
mounted upside down

25

Ø64117

SW14, G¼3658
2626
436T 9520 EN

Drill pattern for wall/panel mounting

8.6

Center of theindicator unit30

Two Ø 8.5 mm holes forfastening at the back of thedp cell (M8 screws)
1525(52)

117

30

158.5

35

6.4

17.5

Two Ø8.5 mm holes forfastening at the valve block (M8screws)

T 9520 EN

7

Article code
Media 05 Differential Pressure and Flow Meterxxxx

02xxx

Standard00

Cryogenic gases according to DIN EN ISO 23208, free of oil and grease

11Oxygen according to DIN EN ISO 23208, free of oil and grease

12xxxxx000VersionIndicator Ø100 mm

5Material
Brass0

Stainless steel

1Measuring range
60 mbar
100 mbar03160 mbar

04250 mbar

05400 mbar

06600 mbar

071000 mbar

081600 mbar

092500 mbar

103600 mbar

11Diaphragm 1)
ECO: –40 to +80 °C

4Version

Zero adjustment screwStandard (accessible from the outside)

0

Concealed (inside the housing)1

Options
Without

0

1 min. limit contact (SJ2-SN) according to ATEX

31 min. and 1 max. limit contact (SJ2-SN) according to ATEX

42 min. limit contacts (SJ2-SN) according to ATEX

5Special versions

2)

Without1)
2)

8

Other diaphragms on request
Special versions on request

T 9520 EN

Accessories
We recommend the following accessories (see Fig. 5) for use with the Media 05 device:
Item

Accessories

Ordering specifications

1

Valve block

Valve block: [yes/no]2

Pressure gauges

Pressure gauge: [yes/no] + measuring range specifications (e.g. 25 bar)

3

Screw plugs

Screw plugs: [yes/no]4

Screw fittings for processconnections

Screw fittings for process connections: [yes/no] + pipe diameter specification [6/8/10/12 mm]

3124Fig. 5: Recommended accessories

Details and other accessories are listed in the Information Sheet u T 9555.
See list of dial faces in u T 9545.

T 9520 EN

9Additionally required ordering specifications–Measured value setting 1): alarm contact set to 0 to ...mbar1)

With default settings of measured value: 0 to upper measuring range value

Additionally required ordering specifications (only for limit switch)Contact A1A1 Min. contact = Value decreases

Metal tag is ...

Inside/outside 3)

A2 Min. contact = Value decreases

Metal tag is ...

Inside/outside 3)

A2 Max. contact = Value increases

Metal tag is ...

at ... mbar

Standard
22–2 %

Contact A21)
2)
3)

Outside/inside3)

at ... mbar

42–2 %

at ... mbar

93+2 %

When delivered with installed limit switch. Standard: without settingWith default settings of measured value: 0 to max. measured value
Delete specification that does not apply

Certificates and approvals–

CE compliance–

Registered by the metrological service of the federal agency for technical regulation and metrology for use in the Russian Federation–

Oxygen service, test report No. 2012/R249a based on DIN EN ISO 7291

Ordering text–

Media 05 Differential Pressure and Flow Meter–

Order no.: Type 5005-... (see article code)–Special version ...

10T 9520 EN

T 9520 EN11

T 9520 EN

2022-01-28 · English

Specifications subject to change without notice