TD_H250_R03_en_PRT.book Page 1 Monday, March 30, 2009 1:20 PM
H250
Technical Datasheet
Variable area flowmeter
• Sturdy construction for high pressure, temperature and media resistance
• Simple to install - Measure and display without auxiliary power supply
• Modular and adaptable to meet customer-specific applications
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CONTENTS
H250
1 Product features
3
1.1 The standard solution for the process industry............................................................... 3
1.2 Options and variants......................................................................................................... 5
1.3 Operating principle........................................................................................................... 8
2 Technical data
9
2.1 Technical data................................................................................................................... 9
2.2 Dimensions and weights ................................................................................................ 20
2.3 Measuring ranges........................................................................................................... 24
3 Installation
32
3.1 Intended use ................................................................................................................... 32
3.2 Installation conditions .................................................................................................... 33
3.2.1
3.2.2
3.2.3
3.2.4
Magnetic filters ..................................................................................................................... 34
Heat insulation ...................................................................................................................... 35
Float damping ....................................................................................................................... 36
Pointer damping.................................................................................................................... 36
4 Electrical connections
37
4.1 Electrical connection indicator M8................................................................................. 37
4.1.1 Indicator M8M - limit switches ............................................................................................. 37
4.1.2 Indicator M8E - current output ............................................................................................. 37
4.2 Electrical connection indicator M9................................................................................. 40
4.2.1
4.2.2
4.2.3
4.2.4
Indicator M9 - limit switches ................................................................................................ 40
Indicator M9 - current output ESK2A ................................................................................... 43
Indicator M9 - Profibus PA (ESK3-PA) ................................................................................. 46
Indicator M9 - totalizer (ESK-Z)............................................................................................ 47
4.3 Electrical connection indicator M10............................................................................... 50
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
2
Indicator M10 ........................................................................................................................ 50
Power supply - current output ............................................................................................. 50
Switching outputs B1 and B2 ................................................................................................ 53
Switching output B2 as a pulse output ................................................................................. 55
Connection reset input R ...................................................................................................... 56
5 Order form
57
6 Notes
58
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Product features
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PRODUCT FEATURES 1
H250
1.1 The standard solution for the process industry
The all-metal variable area flowmeter H250 is used for flow measurement of conductive and
non-conductive liquids, gases and vapours.
1 4...20 mA output / Profibus PA
2 Limit switch
3 Flow counter
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1 PRODUCT FEATURES
H250
Highlights
• Simple, low-cost installation: Measure and display without auxiliary power supply
• Rugged stainless steel construction for high operating pressure up to 3000 bar / 44100 psi
and extreme process temperatures of -200...+400°C / -328...+752°F
• Optionally available with PTFE/ceramic liner for acids and alkalis
• High application safety, even with extremely low flows
• Excellent long-term stability
• Modular and flexible to adapt to customer-specific applications
• SIL 2 certified
• International approvals for use in hazardous areas and nuclear power plants
Industries
Can be used in all industrial sectors, for example:
•
•
•
•
•
•
•
•
•
•
Chemicals
Petrochemicals
Pharmaceutical
Machinery
Food & Beverage
Oil & Gas
Iron, Steel & Metals
Power plants
Pulp & Paper
Water & Wastewater
Applications
•
•
•
•
•
4
Continuous gas and liquid measurement
Measurement of conductive and non-conductive media
Industrial burner controlling
Compressor monitoring
Dry-run protection of pumps
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PRODUCT FEATURES 1
H250
1.2 Options and variants
Stainless steel indicator housing (H250/M9R)
For particularly rough environmental conditions, the M9
indicator housing is optionally available in stainless
steel.
This guarantees its reliable use in corrosive
atmospheres caused by operational emmissions.
When installed outdoors, external influences such as
salt fog or contaminated precipitation no longer lead to
corrosion.
The stainless steel housing is equally well-suited for
use in splash water zones such as in the food and
luxury food industry.
FOOD & PHARMA (H250 F)
The only EHEDG-certified variable area flowmeter
approved for used in the food and pharmaceuticals
industry.
Smooth stainless steel surfaces with a surface
roughness of ≤ 0.8 µm or 0.6 µm of the wetted parts
make deposition difficult and are very easy to clean.
Combined with a design featuring no dead spaces or
stagnation zones, micro-organisms have no chance to
adhere and multiply.
The measuring devices can be cleaned (CIP) and
sterilised (SIP) in place.
Suitable connections and FDA conforming materials for
the food and pharmaceutical industry are available.
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1 PRODUCT FEATURES
H250
PTFE/ceramic liner for aggressive media
All wetted parts are made of PTFE or ceramic and can
thus be used for almost all acids and alkalis.
Depending on the choice of material, the measuring
device can be used up to a maximum temperature of
70°C / 158°F (PTFE) or 250°C / 482°F (ceramic).
Versions for special installation positions (H250H / H250U)
Variable area flowmeters typically feature a vertically
positioned measuring cone through which the medium
flows from bottom to top, lifting a float against the
weight.
If the installation structure does not permit otherwise,
versions for horizontal or inverted (from top to bottom)
installation positions are used.
The missing reset force of the variable area float weight
is replaced by a spring.
6
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PRODUCT FEATURES 1
H250
Indicator variants
Indication M9 (modular)
•
•
•
•
•
•
Local indication without auxiliary power supply
2 limit switches (NAMUR or 3-wire transistor)
2-wire current output 4…20 mA with HART®
Profibus PA interface
6-digit flow counter with pulse output (non Ex)
Intrinsically safe Ex i (ATEX, FM, NEPSI)
Indicator M10 (integrated)
• Graphic display for measured value and counter
display
• 2 limit switches (NAMUR or open collector transistor)
• 2-wire current output 4…20 mA with HART®
• 12-digit flow counter with pulse output and reset input
• Explosion proof enclosure Ex d (ATEX, FM, CSA,
NEPSI)
Indicator M8 (compact)
• Compact, space saving design
• Intrinsically safe Ex i (ATEX)
M8M
• Mechanical indicator without auxiliary power
• 2 limit switches (NAMUR)
M8E
• Electronic bargraph indicator
• 2-wire current output 4…20 mA with HART®
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1 PRODUCT FEATURES
H250
1.3 Operating principle
The flowmeter H250 operates on the float measuring principle. The measuring unit consists of a
metal cone in which a float can move freely up and down. The medium flows through the
flowmeter from bottom to top. The float adjusts itself so that the buoyancy force B, acting on it,
the form drag D and its weight W are in equilibrium: W = B + D.
Figure 1-1: Operating principle
1 Indication principle M9 and M8MG
2 Indication principle M10 and M8EG
For indicators M9 and M8MG 1 the flow-dependent height of the float in the measuring unit is
transmitted by means of a magnetic coupling and displayed on a scale. For indicators M10 and
M8EG 2 the flow-dependent height of the float in the measuring unit is transmitted to the
electronic display by means of a magnetic coupling on sensors S1 and S2.
Operating principle of H250H and H250U
Figure 1-2: Operating principle H250H and H250U
1 H250H - horizontal flow direction
2 H250U - flow direction from top to bottom
The flowmeters operate according to a modified float measuring principle. The guided float
adjusts itself so that the flow force acting on it is in equilibrium with the opposing spring force.
The flow-dependent position of the float in the measuring unit is displayed on a scale by means
of a magnetic coupling.
Flowmeters H250H and H250U only work in conjunction with indicator M9.
8
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Technical data
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TECHNICAL DATA 2
H250
2.1 Technical data
• The following data is provided for general applications. If you require data that is more
relevant to your specific application, please contact us or your local representative.
• Additional information (certificates, special tools, software,...) and complete product
documentation can be downloaded free of charge from the website (Downloadcenter).
Measuring system
Application range
Flow measurement of liquids, gases and vapors
Operating method / measuring principle
Variable area measuring principle
Measured value
Primary measured value
Float position
Secondary measured value
Operating and standard volumetric flow
Measuring accuracy
Directive
VDI / VDE 3513, sheet 2 (qG = 50%)
H250 /RR /HC /F
1.6%
H250/C (Ceramic, PTFE)
H250H, H250U, H250 (100 : 1)
2.5%
Operating conditions
Temperature
Max. operating temperature TS
-196..+300°C / -321...+572°F
Pressure
Max. operating pressure PS
Depending on the version up to 400 bar / 5802 psig
Max. test pressure PT
Pressure equipment directive 97/23/EC or AD 2000-HP30
Min. required operating pressure
2 times greater than pressure loss (see measuring ranges)
Float damping during gas measurement recommended:
DN15...25 / ½"...1"
Operating pressure <0.3 bar / 4.4 psig
DN50...100 / 2"...4"
Operating pressure <0.2 bar / 2.9 psig
Installation conditions
Inlet run
≥ 5 x DN
Outlet run
≥ 3 x DN
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2 TECHNICAL DATA
H250
Materials
Device
Flanges / raised
face
Measuring tube
H250 /RR
Stainless Steel
CrNi steel 1.4404
massive 1
CrNi steel 1.4404 1
-
H250/HC
Hastelloy®
CrNi steel 1.4571
with plated
Hastelloy® C4
(2.4610) 1
Hastelloy® C4 (2.4610)
-
H250/C
Ceramic/PTFE
CrNi steel 1.4571
with TFM/PTFE liner 2
H250/F
F - Food
Float
Float stop / guide
PTFE or Al2O3 with
FFKM gasket
Ring orifice
Al2O3 and PTFE
CrNi steel 1.4435
Al2O3
-
1 CrNi steel 1.4571 on request, for clamp connection CrNi steel 1.4435
2 TFM/PTFE liner (electrically non-conductive)
H250/C - DN100 / 4" only PTFE
H250/F: wetted surfaces Ra ≤0.8 μm, optional ≤0.6 μm
Other options:
• Special materials on request: e.g. SMO 254, titanium, 1.4435
• Float damping: ceramic or PEEK
• Gasket for devices with female thread as insert: O-ring FPM / FKM
Temperatures
For devices to be used in hazardous areas, special temperature ranges apply. These can be
found in the separate instructions.
Temperatures H250/M9 - mechanical indicator without power supply
H250/RR
Float
Liner
Stainless Steel
Stainless Steel
Product temperature
Ambient temperature
[°C]
[°F]
[°C]
[°F]
-196...+300
-321...+572
-40...+120
-40…+248
-20…+120
-4…+248
H250/RR screw fitting
H250/HC
Hastelloy® C4
Hastelloy® C4
-196...+300
-321...+572
-40...+120
-40…+248
H250/C
PTFE
PTFE
-196...+70
-321...+158
-40...+70
-40…+158
H250/C
Ceramic
PTFE
-196...+150
-321...+302
-40...+70
-40…+158
H250/C
Ceramic
TFM
-196...+250
-321...+482
-40...+120
-40…+248
H250 H/U
Stainless Steel
Stainless Steel
-40...+100
-40…+212
-20…+90
-4…+194
10
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TECHNICAL DATA 2
H250
Temperatures H250/M9 - with electrical components [°C]
Maximum product temperatures Tm
Tamb. < +40°C
Tamb. < +60°C 1
EN
ASME
Version with
Standard HT
Standard HT
DN15,
DN25
½", 1"
ESK2A, ESK3-PA
+200
+300
+180
+300
ESK2A with counter
+200
+300
+80
+130
Limit switch NAMUR
+200
+300
+200
+300
3-wire limit switch
+200
+300
+130
+295
ESK2A, ESK3-PA
+200
+300
+165
+300
ESK2A with counter
+180
+300
+75
+100
Limit switch NAMUR
+200
+300
+200
+300
3-wire limit switch
+200
+300
+120
+195
ESK2A, ESK3-PA
+200
+300
+150
+250
ESK2A with counter
+150
+270
+70
+85
Limit switch NAMUR
+200
+300
+200
+300
3-wire limit switch
+190
+300
+110
+160
DN50
DN80,
DN100
2"
3", 4"
Temperatures H250/M9 - with electrical components [°F]
Maximum product temperatures Tm
Tamb. < +104 °F
Tamb. < +104 °F 1
EN
ASME
Version with
Standard HT
Standard HT
DN15,
DN25
½", 1"
ESK2A, ESK3-PA
392
572
356
572
ESK2A with counter
392
572
176
266
Limit switch NAMUR
392
572
392
572
3-wire limit switch
392
572
266
563
ESK2A, ESK3-PA
392
572
165
572
ESK2A with counter
356
572
167
212
Limit switch NAMUR
392
572
392
572
3-wire limit switch
392
572
248
383
ESK2A, ESK3-PA
392
572
302
482
ESK2A with counter
302
518
158
185
Limit switch NAMUR
392
572
392
572
3-wire limit switch
374
572
230
320
DN50
DN80,
DN100
2"
3", 4"
1 if there are no heat insulation measures, a heat-resistant cable is necessary (continuous
operating temperature of the cable to be used: +100°C)
Abbreviation
HT
High-temperature version
ESK2A
Current output 2-wire 4…20 mA
ESK3-PA
PROFIBUS PA interface
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2 TECHNICAL DATA
H250
Minimum ambient temperatures Tamb. with ESK and limit switches
Device
[°C]
[°F]
Limit switch
-25 / -40
-13 / -40
ESK2A - ESK3-PA
-40
-40
[°C]
[°F]
Min. product temperature Tm without limit switches
-80...+200
-112…+392
Min. product temperature Tm with limit switches
-25…+200
-13…+392
Ambient temperature Tamb.
-25…+70
-13…+158
Max. product temperature Tm at Tamb. +40°C / +104°F
-25...+200
-13…+392
Max. product temperature Tm at Tamb. +50°C / +122°F
-25...+185
-13…+365
Max. product temperature Tm at Tamb. +60°C / +140°F
-25...+145
-13…+293
Ambient temperature Tamb.
-25…+70
-13…+158
Max. product temperature Tm at Tamb. +60°C / +140°F
-80...+200
-112…+392
Ambient temperature Tamb.
-40…+75
-40…+167
Temperatures H250 /M8 /M10
M8M
M8E
M10
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TECHNICAL DATA 2
H250
Indicator M8
M8M limit switches
Terminal connection
2.5 mm2
Limit switch
I7S2002-N
SC2-N0
SJ2-SN
SJ2-S1N
Type
2-wire NAMUR
2-wire NAMUR 1
2-wire NAMUR 1
Switch configuration
NC contact
NC contact
NO contact
Nominal voltage U0
8 VDC
8 VDC
8 VDC
Pointer vane not read
≥ 3 mA
≥ 3 mA
≤1 mA
Pointer vane read
≤1 mA
≤1 mA
≥ 3 mA
1 safety oriented
M8E current output
Cable gland
M16 x 1.5
Cable diameter
8…10 mm
Terminal connection
4 mm2
Measuring signal
4...20 mA = 0…100 % flow value in 2-wire technology
Power supply
14.8...30 VDC
Min. power supply for HART®
20.5 VDC
Power supply influence
< 0.1%
Dependence on external resistance
< 0.1%
Temperature influence
< 10 µA / K
Max. external resistance / load
640 Ohm (30 VDC)
Min. load for HART®
250 Ohm
M8E HART® configuration
Manufacturer name (code)
KROHNE Messtechnik (69)
Model name
M8E (230)
HART®
5.1
protocol revision
Device revision
1
Physical layer
FSK
Device category
Transmitter
M8E process variable
M8E process variable flow rate
Values [%]
Signal output [mA]
Over range
+105 (±1%)
20.64...20.96
Device error identification
>110
>21.60
Maximum
112.5
22
Multidrop operation
-
4.5
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2 TECHNICAL DATA
H250
Indicator M9
M9 cable glands
Cable gland
Material
Cable diameter
M 16x1.5 Standard
PA
5...10 mm
0.197...0.394"
M20 x 1.5
PA
8...13 mm
0.315...0.512"
M 16x1.5
Nickel-plated brass
5...9 mm
0.197...0.355"
M20 x 1.5
Nickel-plated brass
10...14 mm
0.394...0.552"
M9 limit switches
Terminal connection
2.5 mm2
Limit switch
I7S23,5-N
SC3,5-N0
SJ3,5-SN 1
SJ3,5-S1N 1
SB3,5-E2
Type
2-wire NAMUR
2-wire NAMUR
2-wire NAMUR
3-wire
Switching element
function
NC contact
NC contact
NO contact
PNP NO contact
Nominal voltage U0
8 VDC
8 VDC
8 VDC
10...30 VDC
Pointer vane not detected
≥ 3 mA
≥ 3 mA
≤ 1 mA
≤ 0.3 VDC
Pointer vane detected
≤ 1 mA
≤ 1 mA
≥ 3 mA
UB - 3 VDC
Continuous current
-
-
-
max. 100 mA
No load current I0
-
-
-
≤ 15 mA
1 safety oriented
M9 current output ESK2A
Terminal connection
2.5 mm2
Power supply
12...30 VDC
Min. power supply for
18 VDC
Measuring signal
4.00...20.00 mA = 0...100% flow value in 2-wire technology
Power supply influence
<0.1%
Dependence on external resistance
<0.1%
Temperature influence
5 µA / K
Max. external resistance / load
800 Ohm (30 VDC)
Min. load for HART®
250 Ohm
Software firmware version
02.15
Ident No.
4000054602
ESK2A HART
14
HART®
®
configuration
Manufacturer name (code)
KROHNE Messtechnik (69 = 45h)
Model name
ESK2A (226 = E2h)
HART®
5.9
protocol revision
Device revision
1
Physical layer
FSK
Device category
Transmitter without galvanic isolation
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TECHNICAL DATA 2
H250
M9 ESK2A process variable
ESK2A process variable flow rate
Values [%]
Signal output [mA]
Over range
+102.5 (±1%)
20.24...20.56
Device error identification
> 106.25
>21.00
Maximum
131.25
25
Multidrop operation
-
4.5
Min. Uext.
12 VDC
M9 ESK-Z totalizer
Terminal connection
2.5 mm2
Power supply
10...30 VDC
Rext. current loop
0...600 Ohm
Power consumption
max. 2.5 Watt
Indication error
< 1% in relation to the value displayed
Max. reset voltage
30 VDC
Min. reset pulse
300 ms
Software firmware version
1.19
Power supply
10...30 VDC
Max. current
50 mA
Max. dissipation
250 mW
T on
80 ms fixed pulse width
T off
depending on flow rate
U on
Ub – 3 VDC
U off
0 VDC
Pulse value
1 pulse = 1 display counter advance (1 litre, 1 m3 ...)
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2 TECHNICAL DATA
H250
Indicator M9 ESK3-PA Profibus
Terminal connection
2.5 mm2
Bus cable R´
15...150 Ohm/km
Bus cable L´
0.4...1 mH/km
Bus cable C´
80...200 nF/km
M9 ESK3PA Hardware
Hardware
acc. to IEC 1158-2 and FISCO model
Supply voltage
9...32 VDC
Base current
12 mA
Starting current
< base current
FDE (fault drop electronics)
< 18 mA
Accuracy acc. to VDI/ VDE 3513
1.6
Measurement resolution
< 0.1% full scale value
Temperature influence
< 0.05% / K full scale value
Software firmware version
1.01/000418
Ident No.
3184980200
M9 ESK3PA Software
GSD
Devices master file
Device profile
Profiles B, V3.0
Function blocks
16
Flow rate (AI0)
Volume or mass
Totalizer (TOT0)
Volume totalizer
Default unit: [m3]
Totalizer (TOT1)
Mass totalizer
Default unit: [kg]
Address range
0...126, default 126
SAP`s
Service Access Points
DD
Device Description
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TECHNICAL DATA 2
H250
Indicator M10
M10 cable gland
(Standard)
without
M20 x 1.5
On request
M 20x1.5 Ex d
On request
M10 current output
Terminal connection
2.5 mm2
24 VDC ±30%
Power supply
Min. power supply for
HART®
18 VDC
Measuring signal
4.00...20.00 mA = 0...100% flow value in 2-wire technology
Power supply influence
< 0.1%
Dependence on external resistance
< 0.1%
Temperature influence
< 5 µA/K
Max. external resistance / load
≤ 630 Ohm
Min. load for HART
≥ 250 Ohm
Software firmware version
02.17
Ident No.
3209470500
M10 HART®
Manufacturer name (code)
KROHNE Messtechnik (69 = 45h)
Model name
M10 (234 = EA)
HART®
5.9
protocol revision
Device revision
1
Physical layer
FSK
Device category
Transmitter
M10 process variable
Values [%]
Signal output [mA]
Over range
+105 (±1%)
20,64...20.96
Device error identification
> 110
> 21.60
Maximum
112.5
22
Multidrop operation
-
4.5
Lift-off voltage
12 VDC
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2 TECHNICAL DATA
H250
M10 binary output
Two binary outputs
Galvanically isolated
Operating mode
Switch output
NAMUR or open collector
Configurable as
Switch contact or
pulse output
open / closed or
max. 10 pulses / s
NAMUR switch output
Power supply
8 VDC
Signal current
> 3 mA switching value not
reached;
< 1 mA switching value
reached
Switch output, open collector
Power supply
8...30 VDC
Pmax
500 mW
Imax
100 mA
M10 reset input
18
Binary input
Galvanically isolated
Operating mode
Reset counter
Configurable as
active Hi / active Lo
Voltage level
5...30 VDC
Current consumption
≤ 1 mA
Pulse length (active)
≥500 ms
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TECHNICAL DATA 2
H250
Approvals
Standard
Indicator
Designation
ATEX
M9 mechanical
II2GD IIC
II3GD IIC
M9 electrical
II2G Ex ia IIC T6
II3G Ex nA II T6
II3D IP65 T65°C
M8 mechanical
II2GD IIC
II3GD IIC
M8 electrical
II2G Ex ia IIC T6...T1
M10
II2G Ex d IIC T6...T1
II3D Ex tD A22 IP66 T65°C
M9
IS/I/1/ABCD;T6
NI/I/2/ABCD;T6
IS/I, II, III/1/A-G
NI/II/2/ABCD
M10
XP/I/1/ABCD;T6
NI/I/2/ABCD;T6
XP/I/1/IIC/T6
NI/I/2/IIC/T6
DIP/II,III/1/EFG/T6
S/II,III/2/FG/T6
CSA
M10
XP/I/1/ABCD;T6
NI/I/2/ABCD;T6
XP/I/1/IIC/T6
NI/I/2/IIC/T6
DIP/II,III/1/EFG/T6
S/II,III/2/FG/T6
Nepsi
M9
Ex ia IIC T1-T6
Ex nA II T1-T6
M8
Ex iA IIC T1-T6
M10
Ex d IIC T1-T6
M10
II2G EEx d IIC T6...T1
FM
INMETRO
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2 TECHNICAL DATA
H250
2.2 Dimensions and weights
Dimensions H250/M9
Front view
Side view
with heating
a
[mm]
All nominal sizes
b
["]
[mm]
["]
9.85
ISO 228
300
11.82
H250/C - 3"/300 lbs
300
11.82
ASME
5.44
d
250
EN
138
c
e
[mm]
["]
High-temperature
[mm]
[mm]
["]
181
[mm]
[mm]
7.13
Øf
["]
h
150
g
["]
[mm]
["]
5.91
j
["]
[mm]
["]
DN15
½"
110.5
4.35
107
4.22
20
0.79
100
3.94
187
7.37
DN25
1"
110.5
4.35
119
4.69
32
1.26
106
4.18
199
7.84
DN50
2"
123.5
5.22
132
5.20
65
2.56
120
4.73
212
8.35
DN80
3"
123.5
5.22
148
5.83
89
3.51
145
5.71
228
8.98
DN100 4"
123.5
5.22
158
6.22
114
4.49
150
5.91
232
9.14
ISO 228
female thread
screwed
ISO 228
female thread
welded
H250/F
Clamp connection
H250/F
Screw connection
DIN 11851
1
1 Stainless steel 1.4435 - EHEDG tested - wetted surfaces Ra ≤ 0.8 / 0.6 µm
20
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TECHNICAL DATA 2
H250
Dimensions H250/M10 /M8
M10
Front view
M10
Side view
M8
Front view
M8
Side view
Dimensions M10
a
[mm]
b
["]
[mm]
c
["]
[mm]
Ød
["]
[mm]
e
EN
ASME
DN15
½"
147
5.79
83
3.27
118
4.65
132
5.20
55
2.17
DN25
1"
147
5.79
83
3.27
130
5.12
132
5.20
55
2.17
DN50
2"
147
5.79
83
3.27
143
5.63
132
5.20
55
2.17
DN80
3"
147
5.79
83
3.27
160
6.30
132
5.20
55
2.17
DN100
4"
147
5.79
83
3.27
169
6.66
132
5.20
55
2.17
Dimensions M8M
f
[mm]
g
EN
ASME
["]
DN15
½"
63
2.48
DN25
1"
75
DN50
2"
89
DN80
3"
DN100
4"
[mm]
["]
[mm]
["]
Dimensions M8E
h
f
g
["]
[mm]
["]
[mm]
["]
60
2.36
58.5
2.30
53.5
2.11
2.95
60
2.36
58.5
2.30
65.5
3.51
73
2.88
45.5
1.79
79.5
105
4.14
73
2.88
45.5
1.79
114
4.49
73
2.88
45.5
1.79
[mm]
h
["]
[mm]
["]
66
2.60
52.5
2.07
2.58
66
2.60
52.5
2.07
3.13
79
3.11
39.5
1.56
95.5
3.76
79
3.11
39.5
1.56
104
4.12
79
3.11
39.5
1.56
For overall height see devices with indicator M9
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2 TECHNICAL DATA
H250
Weights
H250
with heating
Nominal size
EN 1092-1
Flange connection
Ermeto connection
EN
ASME
[kg]
[lbs]
[kg]
[lbs]
[kg]
[lbs]
DN15
½"
3.5
7.7
5.6
12.6
3.9
8.6
DN25
1"
5
11
7.5
16.5
5.8
12.8
DN50
2"
8.2
18.1
11.2
24.7
9.5
21
DN80
3"
12.2
26.9
14.8
32.6
13.1
28.9
DN100
4"
14
30.9
17.4
38.4
15.7
34.6
H250/C [Ceramic / PTFE]
Screw connection
Nominal size
EN 1092-1
ASME 150 lbs
ASME 300 lbs
DIN 11864-1
EN
ASME
[kg]
[lbs]
[kg]
[lbs]
[kg]
[lbs]
[kg]
[lbs]
DN15
½"
3.5
7.7
3.2
7.1
3.5
7.7
2
4.4
DN25
1"
5
11
5.2
11.5
6.8
15
3.5
7.7
DN50
2"
10
22.1
10
22.1
11
24.3
5
11
DN80
3"
13
28.7
13
28.7
15
33.1
7.6
16.8
DN100
4"
15
33.1
16
35.3
17
37.5
10.3
22.7
Process connections
Standards
Conn. dim.
Pressure rating
EN 1092-1
DN15...100
PN16...250
ASME B16.5
½...4"
150...2500 lbs
JIS B 2220
15…100
10...20K
DlN 32676
DN15...100
10...16 bar
ISO 2852
Size 25...139.7
10...16 bar
DIN 11851
DN15...100
25...40 bar
SMS 1146
1...4"
6 bar / 88.2 psig
ISO 228
G½...G2"
ASME B1.20.1
½…2" NPT
≥ 50 bar / 735
psig
Female thread (H250/RR /HC)
with insert, FPM gasket and union nut
ISO 228
G½…2"
ASME B1.20.1
½…2" NPT
Thread connection aseptic (H250/F)
DIN 11864 - 1
DN15…50
PN40
DN80…100
PN 16
DN15…50
PN40
DN80…DN100
PN 16
EN 1092-1
DN15
PN40
ASME B16.5
½"
150 lbs / RF
-
E12
PN40
Flanges (H250/RR /HC /C)
Clamp connections (H250/RR /F)
Screw connections (H250/RR /HC /F)
Female thread welded (H250/RR /HC)
Flange aseptic (H250/F)
DIN 11864 - 2
≤ 50 bar / 735
psig
Meters (H250/RR /HC) with heating:
Heating with flange connection
Heating pipe connection for Ermeto
Higher pressure ratings and other connections on request
22
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TECHNICAL DATA 2
H250
Bolts and tightening torques
For flowmeters with PTFE liner or ceramic liner and PTFE raised face, tighten the flange threads
with the following torques:
Nominal sizes EN
Bolts
Nominal size acc. to EN 1092-1
Tightening torques
Quantity x size
[Nm]
[lb-ft]
DN15 PN40 1
4 x M 12
9.8
7.1
DN25 PN40 2
4 x M 12
21
15
DN50 PN40 2
4x M16
57
41
DN80 PN16 2
8x M16
47
34
DN100 PN16 2
8x M16
67
48
1 standard connections; other connection on request
2 standard connections; other connections on request
Nominal size ASME
Bolts
Nominal size acc. to
ASME B 16.5
Tightening torques
Quantity x size
150 lbs
[Nm]
[lb-ft]
300 lbs
½" 150 lbs / 300 lbs 1
4x ½"
4x ½"
5.2
3.8
1" 150 lbs / 300 lbs 1
4x ½"
4x 5/8"
10
7.2
2" 150 lbs / 300 lbs 1
4x 5/8"
8x 5/8"
41
30
3" 150 lbs / 300 lbs 1
4x 5/8"
8x ¾"
70
51
4" 150 lbs / 300 lbs 1
8x 5/8"
8x ¾"
50
36
1 standard connections; other connections on request
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2 TECHNICAL DATA
H250
2.3 Measuring ranges
H250/RR - Stainless Steel, H250/HC - Hastelloy®
Measuring span 10 : 1; flow values 100%
Water
Float Nominal
size
TIV
Cone
DN15, ½"
DN25, 1"
DN50, 2"
DN80, 3"
DN100, 4"
CIV
Air
DIV
TIV
Alu
[l/h]
Max. pressure loss
TIV
DIV
TIV
Alu
TIV
CIV
DIV
[mbar]
[m3/h]
K 15.1
18
25
-
0.42
0.7
-
12
21
26
-
K 15.2
30
40
-
0.7
1
-
12
21
26
-
K 15.3
55
63
-
1
1.5
-
12
21
26
-
K 15.4
80
100
-
1.7
2.2
-
12
21
26
-
K 15.5
120
160
-
2.5
3.6
-
12
21
26
-
K 15.6
200
250
-
4.2
5.5
-
12
21
26
-
K 15.7
350
400
700
6.7
10
18 1
12
21
28
38
K 15.8
500
630
1000
10
14
28 1
13
22
32
50
K 15.8
-
-
-
50 2
-
-
-
85
K 25.1
480
630
- 1600 2
1000
9.5
14
-
11
24
32
72
K 25.2
820
1000
1600
15
23
-
11
24
33
74
K 25.3
1200
1600
2500
22
35
-
11
25
34
75
K 25.4
1700
2500
4000
37
50
110 1
12
26
38
78
K 25.5
3200
4000
6300
62
95
180 1
13
30
45
103 3
K 55.1
2700
6300
8400
58
80
230 1
8
13
74
60
K 55.2
3600
10000
14000
77
110
350 1
8
13
77
69
K 55.3
5100
16000
25000
110
150
700 1
9
13
84
104
K 85.1
12000
25000
37000
245
350
1000 1
8
16
68
95
K 85.2
16000
40000
64000
280
400
1800 1
9
16
89
125
K105.1
19000
63000
100 000
-
550
2800 1
-
-
120
220
1 P >0.5 bar
2 with TR float
3 300 mbar with damping (gas measurement)
Reference condition:
Water 20°C
Air 20°C - 1.013bar abs.
Remarks:
•
•
•
•
24
Air measurement - TIV float: heating not possible.
The indicated pressure losses are valid for water and air at maximum flow rate.
Other flow ranges on request.
Conversion of other media or operating data is performed using the calculation method in
accordance with VDI /VDE Directive 3513.
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TECHNICAL DATA 2
H250
H250/RR - Stainless Steel, H250/HC - Hastelloy®
Measuring span 10 : 1; flow values 100%
Water
Float TIV
CIV
Air
DIV
TIV
Alu
TIV
DIV
TIV
Alu
TIV
DIV
Cone
DN15, ½"
K 15.1
4.76
6.60
-
0.26
0.43
-
0.18
0.31
0.38
-
K 15.2
7.93
10.6
-
0.43
0.62
-
0.18
0.31
0.38
-
K 15.3
14.5
16.6
-
0.62
0.93
-
0.18
0.31
0.38
-
K 15.4
21.1
26.4
-
1.05
1.36
-
0.18
0.31
0.38
-
K 15.5
31.7
42.3
-
1.55
2.23
-
0.18
0.31
0.38
-
K 15.6
52.8
66.0
-
2.60
3.41
-
0.18
0.31
0.38
-
K 15.7
92.5
106
185
4.15
6.20
11.2 1
0.18
0.31
0.41
0.56
K 15.8
132
166
264
6.20
8.68
17.4 1
0.19
0.32
0.47
0.74
K 15.8
-
-
423 2
-
-
31.0 2
-
-
-
1.25
K 25.1
127
166
264
5.89
8.68
-
0.16
0.35
0.47
1.06
K 25.2
217
264
423
9.30
14.3
-
0.16
0.35
0.49
1.09
K 25.3
317
423
660
13.6
21.7
-
0.16
0.37
0.50
1.10
K 25.4
449
660
1057
22.9
31.0
68.2 1
0.18
0.38
0.56
1.15
K 25.5
845
1057
1664
38.4
58.9
111 1
0.19
0.44
0.66
1.51 3
K 55.1
713
1664
2219
36.0
49.6
143 1
0.12
0.19
1.09
0.88
K 55.2
951
2642
3698
47.7
68.2
217 1
0.12
0.19
1.13
1.01
K 55.3
1347
4227
6604
68.2
93.0
434 1
0.13
0.19
1.23
1.53
K 85.1
3170
6604
9774
152
217
620 1
0.12
0.24
1.00
1.40
K 85.2
4227
10567
16907
174
248
1116 1
0.13
0.24
1.31
1.84
K105.1
5019
16643
26418
-
341
1736 1
-
1.76
3.23
DN50, 2"
DN80, 3"
DN100, 4"
[scfm]
CIV
Nominal
size
DN25, 1"
[gph]
Max. pressure loss
[psig]
1 P >7.4 psig
2 with TR float
3 4.4 psig with damping (gas measurement)
Reference condition:
Water 68°F
Air 68°F - 14.7 psi
Remarks:
•
•
•
•
Air measurement - TIV float: heating not possible.
The indicated pressure losses are valid for water and air at maximum flow rate.
Other flow ranges on request.
Conversion of other media or operating data is performed using the calculation method in
accordance with VDI /VDE Directive 3513.
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2 TECHNICAL DATA
H250
H250/C - Ceramic/PTFE
Measuring span 10 : 1; flow values 100%
Flow rate
Water
Liner /
Float Nominal
size
DN15, ½"
DN25, 1"
DN50, 2"
DN80, 3"
DN100, 4"
PTFE
Cone
Max. pressure loss
Air
Ceramic
[l/h]
Water
Ceramic
PTFE
Air
Ceramic
Ceramic
[mbar]
[m3/h]
E 17.2
25
30
-
65
62
62
E 17.3
40
50
1.8
66
64
64
E 17.4
63
70
2.4
66
66
66
E 17.5
100
130
4
68
68
68
E 17.6
160
200
6.5
72
70
70
E 17.7
250
250
9
86
72
72
E 17.8
400
-
-
111
-
-
E 27.1
630
500
18
70
55
55
E 27.2
1000
700
22
80
60
60
E 27.3
1600
1100
30
108
70
70
E 27.4
2500
1600
50
158
82
82
E 27.5
4000 1
2500
75
290
100
100
E 57.1
4000
4500
140
81
70
70
E 57.2
6300
6300
200
110
80
80
E 57.3
10000
11000
350
170
110
110
E 57.4
16000 1
-
-
284
-
-
E 87.1
16000
16000
-
81
70
-
E 87.2
25000
25000
-
95
85
-
E 87.3
40000 1
-
-
243
-
-
E 107.1
40000
-
-
100
-
-
E 107.2
60000 1
-
-
225
-
-
1 special float
Reference condition:
Water 20°C
Air 20°C - 1.013bar abs.
Remarks:
• The indicated pressure losses are valid for water and air at maximum flow rate.
• Other flow ranges on request.
• Conversion of other media or operating data is performed using the calculation method in
accordance with VDI /VDE Directive 3513.
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TECHNICAL DATA 2
H250
H250/C - Ceramic/PTFE
Measuring span 10 : 1; flow values 100%
Flow rate
Water
Liner / Float Nominal
size
DN15, ½"
DN25, 1"
DN50, 2"
DN80, 3"
DN100, 4"
Cone
PTFE
Max. pressure loss
Air
Ceramic
[gph]
Water
Ceramic
PTFE
[scfm]
Air
Ceramic
Ceramic
[psig]
E 17.2
6.60
7.93
-
0.96
0.91
0.91
E 17.3
10.6
13.2
1.12
0.97
0.94
0.94
E 17.4
16.6
18.5
1.49
0.97
0.97
0.97
E 17.5
26.4
34.3
2.48
1.00
1.00
1.00
E 17.6
42.3
52.8
4.03
1.06
1.03
1.03
E 17.7
66.0
66.0
5.58
1.26
1.06
1.06
E 17.8
106
-
-
1.63
-
-
E 27.1
166
132
11.2
1.03
0.81
0.81
E 27.2
264
185
13.6
1.18
0.88
0.88
E 27.3
423
291
18.6
1.59
1.03
1.03
E 27.4
660
423
31.0
2.32
1.21
1.21
E 27.5
1056 1
660
46.5
4.26
1.47
1.47
E 57.1
1057
1189
86.8
1.19
1.03
1.03
E 57.2
1664
1664
124
1.62
1.18
1.18
E 57.3
2642
2906
217
2.50
1.62
1.62
E 57.4
4226 1
-
-
4.17
-
-
E 87.1
4227
4227
-
1.19
1.03
-
E 87.2
6604
6604
-
1.40
1.25
-
E 87.3
10567 1
-
-
3.57
-
-
E 107.1
10567
-
-
1.47
-
-
E 107.2
15850 1
-
-
3.31
-
-
1 special float
Reference condition:
Water 68°F
Air 68°F - 14.7 psi
Remarks:
• The indicated pressure losses are valid for water and air at maximum flow rate.
• Other flow ranges on request.
• Conversion of other media or operating data is performed using the calculation method in
accordance with VDI /VDE Directive 3513.
03/2009 - 4000285103 - TD H250 R03 en
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2 TECHNICAL DATA
H250
H250H - Horizontal installation position
Measuring span 10 : 1; flow values 100%
EN
DN15
DN25
DN50
DN80
DN100
ASME
Cone
½
1"
2"
3"
4"
Flow rate
Water [l/h]
Flow rate
Air [Nm3/h]
Pressure loss
[mbar]
K 15.1
70
1.8
195
K 15.2
120
3
204
K 15.3
180
4.5
195
K 15.4
280
7.5
225
K 15.5
450
12
250
K 15.6
700
18
325
K 15.7
1200
30
590
K 15.8
1600
40
950
K 15.8
2400
60
1600
K 25.1
1300
35
122
K 25.2
2000
50
105
K 25.3
3000
80
116
K 25.4
5000
130
145
K 25.5
8500
220
217
K 25.5
10000
260
336
K 55.1
10000
260
240
K 55.2
16000
420
230
K 55.3
22000
580
220
K 55.3
34000
900
420
K 85.1
25000
650
130
K 85.2
35000
950
130
K 85.2
60000
1600
290
K 105.1
80000
2200
250
K 105.1
120000
3200
340
Reference condition:
Water 20°C
Air 20°C - 1.013bar abs.
Remarks:
• The indicated pressure losses are valid for water and air at maximum flow rate.
• Other flow ranges on request.
• Conversion to other media or operating data in accordance with VDE /VDI Directive 3513
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TECHNICAL DATA 2
H250
H250H - Horizontal installation position
Measuring span 10 : 1; flow values 100%
EN
ASME
DN15
DN25
DN50
DN80
DN100
Cone
1/2"
1"
2"
3"
4"
Flow rate
Water [gph]
Flow rate
Air [scfm]
Pressure loss
[psig]
K 15.1
18.5
1.12
2.87
K 15.2
31.7
1.86
3.00
K 15.3
47.6
2.79
2.87
K 15.4
74.0
4.65
3.31
K 15.5
119
7.44
3.68
K 15.6
185
11.2
4.78
K 15.7
317
18.6
8.68
K 15.8
423
24.8
14.0
K 15.8
634
37.2
23.5
K 25.1
343
21.7
1.79
K 25.2
528
31.0
1.54
K 25.3
793
49.6
1.71
K 25.4
1321
80.6
2.13
K 25.5
2245
136
3.19
K 25.5
2642
161
4.94
K 55.1
2642
161
3.53
K 55.2
4227
260
3.38
K 55.3
5812
360
3.23
K 55.3
8982
558
6.17
K 85.1
6604
403
1.91
K 85.2
9246
589
1.91
K 85.2
15851
992
4.26
K 105.1
21134
1364
3.68
K 105.1
31701
1984
5.00
Reference condition:
Water 68°F
Air 68°F - 14.7 psi
Remarks:
• The indicated pressure losses are valid for water and air at maximum flow rate.
• Other flow ranges on request.
• Conversion to other media or operating data in accordance with VDE /VDI Directive 3513
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2 TECHNICAL DATA
H250
H250U - Vertical installation position
Flow direction from top to bottom
Measuring span 10 : 1; flow values 100%
EN
DN15
DN25
DN50
ASME
Cone
½"
1"
2"
Flow rate
Water [l/h]
Flow rate
Air [Nm3/h]
Pressure loss
[mbar]
K 15.1
65
1.6
175
K 15.2
110
2.5
178
K 15.3
170
4
180
K 15.4
260
6
200
K 15.5
420
10
220
K 15.6
650
16
290
K 15.7
1100
28
520
K 15.8
1500
40
840
K 25.1
1150
30
97
K 25.2
1800
45
85
K 25.3
2700
70
92
K 25.4
4500
120
115
K 25.5
7600
200
172
K 55.1
9000
240
220
K 55.2
15000
400
230
K 55.3
21000
550
240
Reference condition:
Water 20°C
Air 20°C - 1.013bar abs.
Remarks:
• The indicated pressure losses are valid for water and air at maximum flow rate.
• Other flow ranges on request.
• Conversion to other media or operating data in accordance with VDE /VDI Directive 3513
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TECHNICAL DATA 2
H250
H250U - Vertical installation position
Flow direction from top to bottom
Measuring span 10 : 1; flow values 100%
EN
ASME
DN15
DN25
DN50
Cone
½"
1"
2"
Flow rate
Water [gph]
Flow rate
Air [scfm]
Pressure loss
[psig]
K 15.1
17.2
0.99
2.57
K 15.2
29.1
1.55
2.62
K 15.3
44.9
2.48
2.65
K 15.4
68.7
3.72
2.94
K 15.5
111
6.20
3.23
K 15.6
172
9.92
4.26
K 15.7
291
17.4
7.64
K 15.8
396
24.8
12.3
K 25.1
304
18.6
1.42
K 25.2
476
27.9
1.25
K 25.3
713
43.4
1.35
K 25.4
1189
74.4
1.69
K 25.5
2008
124
2.53
K 55.1
2378
149
3.23
K 55.2
3963
248
3.38
K 55.3
5548
341
3.53
Reference condition:
Water 68°F
Air 68°F - 14.7 psi
Remarks:
• The indicated pressure losses are valid for water and air at maximum flow rate.
• Other flow ranges on request.
• Conversion to other media or operating data in accordance with VDE /VDI Directive 3513
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Installation
.book Page 32 Tuesday, March 31, 2009 1:39 PM
3 INSTALLATION
H250
3.1 Intended use
The variable area flowmeters are suitable for measuring gases, vapours and liquids.
The devices are particularly suitable for the measurement of:
•
•
•
•
•
•
•
•
Liquids
Hydrocarbons
Water
Chemicals with low corrosiveness
Saturated steam
Superheated steam
Food and luxury food
Industrial gases
For devices used in hazardous areas, additional safety notes apply; please refer to the Ex
documentation.
The operator himself bears the sole responsibility for the intended use of the device regarding
the suitability and the corrosion resistance of the used materials against the measured fluid.
The manufacturer is not liable for any damage resulting from improper use or use for other than
the intended purpose.
Do not use any abrasive or highly viscous media.
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INSTALLATION 3
H250
3.2 Installation conditions
When installing the device in the piping, the following points must be observed:
• The variable area flowmeter must be installed vertically (measuring principle). Flow direction
•
•
•
•
•
•
•
•
•
•
•
•
from bottom to top. For installation recommendations please refer also to VDI/VDE 3513
Sheet 3.
H250Hs are installed horizontally and H250U devices are installed vertically with the flow
direction from top to bottom.
A straight unimpeded inlet run of ≥ 5x DN upstream of the device and a straight outlet run of
≥ 3x DN downstream of the device are recommended.
Screws, bolts and gaskets are to be provided by the customer and must be selected in
accordance with the pressure rating of the connection or the operating pressure.
The inside diameter of the flange deviates from the standard dimensions. Flange seal
standard DIN 2690 can be applied without any limitation.
Align the gaskets. Tighten the nuts with the tightening torques of the appropriate pressure
rating.
For devices with PTFE liner or ceramic liner and PTFE raised faces, see chapter "Tightening
torques".
Control devices are to be positioned downstream of the measuring device.
Shutoff devices are preferably to be positioned upstream of the measuring device.
Before connecting, blow or flush out the pipes leading to the device.
Pipes for gas flow need to be dried before the device is installed.
Use connectors suitable for the particular device version.
Align the pipes axially with the connections on the measuring device so they are free of
stresses.
If necessary, the piping has to be supported to prevent vibrations being transmitted to the
measuring device.
Do not lay signal cables directly next to cables for the power supply.
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3 INSTALLATION
H250
Take special note of the installation position for the H250H with horizontal flow
direction:
In order to comply with thermal parameters and measuring accuracy, H250H flowmeters for
horizontal installation are to be installed in the pipeline so that the display is located on the side
of the measuring tube. The maximum medium and ambient temperatures indicated as well as
the measuring accuracy are based on lateral installation of the display.
3.2.1 Magnetic filters
The use of magnetic filters is recommended when the medium contains particles which can be
influenced magnetically.
The magnetic filter is to be installed in the flow direction upstream of the flowmeter.
Bar magnets are positioned helically in the filter to provide optimal efficiency at low pressure
loss.
All of the magnets are coated individually with PTFE to protect against corrosion.
Figure 3-1: Magnetic filters
1 Type F - fitting part with flange - overall length 100 mm
2 Type FS - fitting part without flange - overall length 50 mm
Material: 1.4571
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INSTALLATION 3
H250
3.2.2 Heat insulation
The indicator housing may not be heat-insulated.
The heat insulation 3 may only reach as far as the housing fastening 4.
Figure 3-2: H250 heat insulation
1 Standard indicator M9
2 Indicator with HT extension
This applies in the same manner to indicators M8 and M10.
The heat insulation 1 may only reach to the rear of the housing 2. The area of the cable entries
3 must be freely accessible.
Figure 3-3: Insulation - cross section
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3 INSTALLATION
H250
3.2.3 Float damping
Float damping is characterised by high standstill times and self-centering. The damping sleeve
is made of high performance ceramic or PEEK, depending on the medium and the application.
Float damping can also be retrofitted for the user (see Service).
Use of damping
• Generally when CIV and DIV floats are used for gas measurement.
• For TIV floats (H250/RR and H250/HC only) with an operating primary pressure:
Nominal size acc. to
EN 1092-1
Operating primary pressure
ASME B16.5
[bar]
[psi]
DN15
½"
≤0.3
≤4.4
DN25
1"
≤0.3
≤4.4
DN50
2"
≤0.2
≤2.9
DN80
3"
≤0.2
≤2.9
DN100
4"
≤0.2
≤2.9
3.2.4 Pointer damping
The pointer system with its magnetic system basically contains pointer damping. An additional
eddy current brake is advantageous for fluctuating or pulsing flows. The eddy current brake
magnets surround the pointer vane 1 without touching it, damping its movement. The result is a
pointer position that is considerably calmer, and no distortion of the measured value. A clamp
screw holds it in place securely. The eddy current brake can be retrofitted without having to
recalibrate and while in operation (see Service).
1
2
3
4
36
Eddy current brake
Pointer vane
Bracket
Pointer cylinder
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ELECTRICAL CONNECTIONS 4
H250
4.1 Electrical connection indicator M8
4.1.1 Indicator M8M - limit switches
The limit switches can be set over the entire measuring range using the maximum pointer 1.
The set limit values are displayed on the scale. The pointers are set to the desired limit values
using a slip coupling along the scale.
Figure 4-1: Limit switch settings M8MG
1
2
3
4
Maximum pointer, switching point indicator
Limit switch
Connection board
Connection terminal
4.1.2 Indicator M8E - current output
Figure 4-2: Electrical connection M8EG
1 Terminal connection
2 Power supply 14.8...30 VDC
3 Measuring signal 4...20 mA
4 External load, HART® communication
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4 ELECTRICAL CONNECTIONS
H250
Power supply M8 with electrical isolation
The circuitry for connection to other devices such as digital evaluator units or process control
equipment must be designed with especial care. In some circumstances internal connections in
these devices (e.g. GND with PE, ground loops) may lead to impermissible voltage potentials,
which can compromise the function of the device itself or a connected device. In such cases a
protected extra-low voltage (PELV) is recommended.
Figure 4-3: Electrical connection M8EG with electrical isolation
1
2
3
4
Terminal connection
Converter supply isolator with electrical isolation
Power supply (see supply isolator information)
Measuring signal 4...20 mA
5 External load, HART® communication
Power supply
The supply voltage has to be between 14.8 VDC and 30 VDC. This is based on the total resistance
of the measuring loop. To determine this, add up the resistances of each component in the
measuring loop (not including the device).
The required supply voltage can be calculated using the formula below:
Uext. = RL.22 mA + 14.8 V
where
Uext. = the minimum supply voltage and
RL = the total measuring loop resistance is.
The power supply has to be able to supply a minimum of 22 mA.
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ELECTRICAL CONNECTIONS 4
H250
HART® communication
When HART® communication is carried out with the M8E display, the analogue measured data
transmission (4...20 mA) is not impaired in any way.
Exception for multidrop mode. In multidrop mode, a maximum of 15 devices with HART® function
can be operated in parallel, whereby their current outputs are switched inactive
(I approx. 4 mA per device).
Load for HART® communication
For HART® communication a load of at least 230 ohm is required.
The maximum load resistance is calculated as follows:
Use a twisted two-core cable to prevent electrical interference from impeding the DC output
signal.
In some cases a shielded cable may be necessary. The cable shield may only be earthed
(grounded) at one place (on the power supply unit).
Configuration
The M8E electronic indicator can be configured via HART® communication. DD (Device
Descriptions) for AMS 6.x and PDM 5.2 as well as a DTM (Device Type Manager) are available for
configuration. They can be downloaded free of charge from our website.
The current flow rate can be transmitted using the integrated HART® communication. A flow
counter can be configured. Two limit values can be set and monitored. The limit values are
assigned either to flow values or to the counter overflow. The limit values are not depicted on the
display.
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4 ELECTRICAL CONNECTIONS
H250
4.2 Electrical connection indicator M9
4.2.1 Indicator M9 - limit switches
The M9 indicator can be equipped with a maximum of two electronic limit switches. The limit
switch functions as a slot sensor which is operated inductively through the semicircular metal
vane belonging to the measuring pointer. The switching points are set using the contact pointers.
The position of the contact pointer is indicated on the scale.
Limit switch module
1
2
3
4
5
Min. contact
Max. contact
Locking screw
Maximum pointer
Connection terminal
The connecting terminals have a pluggable design and can be removed in order to connect the
cables. The built-in limit switch types are shown on the indicator.
Electrical connection of the limit switches
Contact
Terminal no.
40
MIN
1
2
Connection 2-wire NAMUR
-
+
Connection 3-wire
+
DC
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MAX
3
4
5
-
+
-
+
DC
6
-
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ELECTRICAL CONNECTIONS 4
H250
Limit switch connection terminals
1
2
3
4
5
6
7
2-wire limit switch NAMUR
3-wire limit switch
Terminal connection min contact
Terminal connection max contact
3-wire load
NAMUR isolated switching amplifier
3-wire power supply
Limit setting
Figure 4-4: Limit switch settings
1 Contact pointer MAX
2 Contact pointer MIN
3 Locking screw
Setting is carried out directly via contact pointers 1 and 2:
•
•
•
•
Slide the scale away
Loosen the locking screw 3 slightly
Slide the scale back to the latching point
Set contact pointers 1 and 2 to the desired switching point
After setting has been carried out: Fix the contact pointers with the locking screw 3.
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4 ELECTRICAL CONNECTIONS
H250
Switch contact definition
1 MIN contact
2 MAX contact
3 Pointer vane with switching vane
If the pointer vane enters the slot, an alarm is triggered. If the pointer vane lies outside the slot
sensor, a wire break also causes the alarm to be triggered.
The 3-wire limit switch does not have any wire break detection.
Definition MinMin - MaxMax
1 MIN 2 contact or MAX 1 contact
2 MIN 1 contact or MAX 2 contact
Current consumption in the position shown:
42
Contact
Type
Current
MIN 1
NAMUR
≤ 1 mA
MIN 2
NAMUR
≤ 1 mA
MAX 1
NAMUR
≥ 3 mA
MAX 2
NAMUR
≥ 3 mA
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ELECTRICAL CONNECTIONS 4
H250
4.2.2 Indicator M9 - current output ESK2A
The connecting terminals of the ESK2A have a pluggable design and can be removed in order to
connect the cables.
1 ESK2A current output
2 Power supply 12...30VDC
3 Measuring signal 4...20 mA
4 External load, HART® communication
Power supply M9 with electrical isolation
The circuitry for connection to other devices such as digital evaluator units or process control
equipment must be designed with especial care. In some circumstances internal connections in
these devices (e.g. GND with PE, ground loops) may lead to impermissible voltage potentials,
which can compromise the function of the device itself or a connected device. In such cases a
protected extra-low voltage (PELV) is recommended.
1
2
3
4
Terminal connection
Converter supply isolator with electrical isolation
Power supply (see supply isolator information)
Measuring signal 4...20 mA
5 External load, HART® communication
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4 ELECTRICAL CONNECTIONS
H250
Power supply
The supply voltage has to be between 12 VDC and 30 VDC. This is based on the total resistance of
the measuring loop. To determine this, add up the resistances of each component in the
measuring loop (not including the device).
The required supply voltage can be calculated using the formula below:
Uext. = RL.22 mA + 12 V
where
Uext. = the minimum supply voltage and
RL = the total measuring loop resistance is.
The power supply has to be able to supply a minimum of 22 mA.
HART® communication
When HART® communication is carried out with the ESK, the analogue measured data
transmission (4...20 mA) is not impaired in any way.
Exception for multidrop mode. In multidrop mode, a maximum of 15 devices with HART® function
can be operated in parallel, whereby their current outputs are switched inactive
(I approx. 4 mA per device).
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ELECTRICAL CONNECTIONS 4
H250
Load for HART® communication
For HART® communication a load of at least 230 ohm is required.
The maximum load resistance is calculated as follows:
Use a twisted two-core cable to prevent electrical interference from impeding the DC output
signal.
In some cases a shielded cable may be necessary. The cable shield may only be earthed
(grounded) at one place (on the power supply unit).
Configuration
The ESK can be configured via HART® communication. DD (Device Descriptions) for AMS 6.x and
PDM 5.2 as well as a DTM (Device Type Manager) are available for configuration. They can be
downloaded free of charge from our website.
The current flow rate can be transmitted using the integrated HART® communication. A flow
counter can be configured. Two limit values can be monitored. The limit values are assigned
either to flow values or to the counter overflow.
Self monitoring - Diagnostics
During both start-up and operation, a wide variety of diagnostic functions are performed
cyclically in the ESK2A, in order to guarantee function reliability. When an error is detected, a
failure signal (high) is activated (current > 21 mA) via the analogue output. In addition, more
detailed information can be requested via HART® (CMD#48). The failure signal is not activated
for information and warnings.
Diagnostic functions (Monitoring):
•
•
•
•
•
•
•
•
Plausibility of FRAM data
Plausibility of ROM data
Working range of internal reference voltages
Signal detection of the measuring range of the internal sensors
Temperature compensation of the internal sensors
Calibration corresponding the application
Plausibility of counting value
Plausibility of physical unit, system and selected unit
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4 ELECTRICAL CONNECTIONS
H250
4.2.3 Indicator M9 - Profibus PA (ESK3-PA)
Bus cable
Shielding and grounding
The statements of the FISCO model only apply if the bus cable used meets the required
specifications. For specifications, see the chapter "Technical data" ESK3-PA.
In order to ensure optimum electromagnetic compatibility of systems it is important that the
system components, and in particular the bus cables, are shielded. These shields must have as
few gaps as possible.
Connection
Figure 4-5: ESK3-PA connection
1 Signal connection
2 Shielding and grounding
Polarity reversal has no effect on the function. The cable shield should be connected with
minimum length to the functional ground FE.
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ELECTRICAL CONNECTIONS 4
H250
4.2.4 Indicator M9 - totalizer (ESK-Z)
The totalizer only works in conjunction with the ESK2A current output. A 6-digit display shows
the totalised flow value. It can be changed over to the instantaneous flow value in 0...100%.
A data backup is carried out automatically in the event of a power failure.
The counter is factory-set to the measuring range of the indicator. The total value can be read
directly.
Supply 11/12 and measured signals S+ and S- are not electrically isolated.
If the measured signal is not needed externally, a short-circuit jumper has to be connected to
terminals S+ and S-.
Pulse outputs P+ and P- are electrically isolated. A pulse is generated for each counter advance.
If the pulse output is not required, its terminals can remain unused.
Figure 4-6: Counter connection
1
2
3
4
5
6
ESK - measurement signal 4...20 mA
Counter module
Transfer of the measurement signal or short-circuit jumper
Pulse output load
Counter power supply
Pulse output power supply
A functional extra-low voltage with protective electrical isolation (PELV) in accordance with VDE
0100 Part 410 is required as a power supply. All the instruments (recorder, display, etc.)
connected to measuring circuits S+ and S- are connected in series. If this measuring circuit is
not needed, then a short-circuit jumper 3 required.
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4 ELECTRICAL CONNECTIONS
H250
Settings - display modes
Figure 4-7: Counter display modes
1 Flow rate as % display
2 Flow totalizer display
3 Conversion factor display
The RESET button deletes only the current total value.
Settings by pressing a button at the moment of switch-on
Figure 4-8: Settings of the counter at the moment of switch-on
RESET button - mA calibration
Button 1 - Display test
Button 2 - Changing the conversion factor
Button 3 - Software hardware version (information)
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ELECTRICAL CONNECTIONS 4
H250
Conversion factor
The conversion factor is always 10% of the full-scale range.
If the measuring range is not know, the conversion factor is factory-set to 1000.
Figure 4-9: Changing the conversion factor
1 Units position
2 Tens position
3 Hundreds and 1000s position
Exit the setting by pressing the RESET button
The largest factor that can be set is 1099.
Factors with decimal values are not possible.
Counter overflow
Figure 4-10: Depiction of counter overflow
A counter overflow is signaled by all the decimal points lighting up.
Reset by pressing the RESET button.
Current input calibration
During the switching-on process keep the RESET button pressed until three decimal points light
up.
•
•
•
•
•
Set 4.00 mA
Keep button 1 pressed until the number 0 is displayed
Set 20.00 mA
Keep button 3 pressed until the number 100 is displayed
Exit calibration by pressing button 2
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4 ELECTRICAL CONNECTIONS
H250
4.3 Electrical connection indicator M10
4.3.1 Indicator M10
The display can be removed after the housing lid has been unscrewed. The connection terminals
have a spring locking system.
Figure 4-11: Indicator M10 terminal connection
1
2
3
4
Power supply - analog output
Switching output B1
Switching output B2 or pulse output
Reset input R
4.3.2 Power supply - current output
The electrical connection is reverse-polarity protected.
Terminal connection I
1 Terminal connection
2 Power supply 16...32 VDC
3 Measuring signal 4...20 mA
4 External load, HART® communication
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ELECTRICAL CONNECTIONS 4
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Power supply M10 with electrical isolation
The circuitry to other devices must be designed with special care. In some circumstances,
internal connections in these devices (e.g. GND with PE, ground loops) may lead to
impermissible voltage potentials, which can compromise the function of the device itself or a
connected device. In such cases a protected extra-low voltage (PELV) is recommended.
1
2
3
4
Terminal connection
Converter supply isolator with electrical isolation
Power supply (see supply isolator information)
Measuring signal 4...20 mA
5 External load, HART® communication
Power supply
The supply voltage has to be between 16 VDC and 32 VDC. This is based on the total resistance of
the measuring loop. To determine this, add up the resistances of each component in the
measuring loop (not including the device).
The required supply voltage can be calculated using the formula below:
Uext. = RL.22 mA + 16 V
where
Uext. = the minimum supply voltage and
RL = the total measuring loop resistance is.
The power supply has to be able to supply a minimum of 22 mA.
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4 ELECTRICAL CONNECTIONS
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HART® communication
When HART® communication is carried out with the M10, this will not in any way impair analogue
measured data transmission (4...20 mA).
Exception for multidrop operation. In multidrop operation, a maximum of 15 devices with HART®
function can be operated in parallel, for which the current outputs are switched to inactive.
Load for HART® communication
For HART® communication a load of at least 230 ohm is required.
The maximum load resistance is calculated as follows:
Use a twisted two-core cable to prevent electrical interference from impeding the DC output
signal.
In some cases a shielded cable may be necessary. The cable shield may only be earthed
(grounded) at one place (on the power supply unit).
Configuration
The M10 electronic indicator can be configured via HART® communication. DD (Device
Descriptions) for AMS 6.x and PDM 5.2 as well as a DTM (Device Type Manager) are available for
configuration. They can be downloaded free of charge from our website.
The current flow rate can be transmitted using the integrated HART® communication. The flow
counter can be configured. Two limit values can be monitored. The limit values are assigned
either to flow values or to the counter.
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ELECTRICAL CONNECTIONS 4
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4.3.3 Switching outputs B1 and B2
The switching outputs are electrically isolated from each other and from the current output.
The switching outputs can only be operating if the power supply is applied to terminals I+ and I-.
Switching outputs B1 and B2 can be electrically connected in two ways:
• NAMUR switching output - Ri approx. 1 kOhm
• OC - (open collector) low-resistance switching output with PNP technology
M10 switching outputs
1
2
3
4
5
NAMUR terminal connection
Isolated switching amplifier
PNP technology terminal connection
Power supply Uext.
Load RL
Switching values
NO contact
NAMUR
NC contact
OC
NAMUR
OC
I [mA]
Switching value reached
<1
<1
>3
max. 100
Switching value not reached
>3
max. 100
<1
<1
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4 ELECTRICAL CONNECTIONS
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Switching capacity of B1 and B2 with PNP technology
Due to the PNP technology and the associated protective elements, there is a voltage drop Uv for
the load to be operated.
Switching capacity of B1 and B2
1 Max. switching current I [mA]
2 Minimum load impedance RL [Ohm]
3 Power supply Uext.
Power loss of B1 and B2
1
2
3
4
54
Load impedance RL 100 Ohm
Load impedance RL 1000 Ohm
Power loss Ud
Power supply Uext.
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ELECTRICAL CONNECTIONS 4
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4.3.4 Switching output B2 as a pulse output
When switching output B2 is used as a pulse output, two separate signal circuits are required.
Each signal circuit requires its own power supply.
The total resistance must be adapted so that the total current Itot does not exceed 100 mA.
Figure 4-12: Electrical pulse output
1
2
3
4
5
6
Terminal B2
Terminal I
e.g. counter
Flow rate measurement 4...20 mA
Pulse output power supply
M10 power supply
Pulse output B2 is a passive "open collector" output which is electrically isolated from the
current output and output B1. It can be operated as a low-resistance output or as a NAMUR
output.
Figure 4-13: Data pulse output
1 fmax = 10 Hz
2 ton
3 toff
The pulse width ton can be configured from 30...500 ms in the menu of the indicator.
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4 ELECTRICAL CONNECTIONS
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4.3.5 Connection reset input R
Input R can be used as a reset input for the internal counter.
Figure 4-14: Indicator M10 - reset input
1 Function active HI
2 Function active LO
This reset input can be activated in the menu of indicator M10, and can be configured to ACTIVE
HI or ACTIVE LO. See also chapter "Indicator M10 menu explanations".
If the input is set as ACTIVE LO, an interruption causes the counter to be reset.
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ORDER FORM 5
H250
Please provide us with the missing information so that we can be of help to you as quickly as
possible.
Then please fax this page to the appropriate sales associate. We will then contact you as soon as
possible.
Device data
Connection type:
Nominal connection size:
Pressure rating:
Raised face:
Material of pipeline:
Indicator:
… M9
… M8MG
Indicator options:
… K1 1
… K2 2
… ESK2A
… Profibus
… ESK-Z
… K1 1
… K2 2
Approval:
… Without
… ATEX
… M8EG
… M10
… FM
… NEPSI
… CSA
… INMETRO
1 1 limit switch
2 2 limit switches
Rating data
Product:
Operating pressure:
… Absolute
pressure
… Overpressure
… Standard
density
… Operating
density
Rated pressure:
Operating temperature:
Rated temperature:
Density:
Viscosity:
Measuring range:
Comments:
Contact data
Company:
Contact person:
Telephone number:
Fax number:
E-mail:
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6 NOTES
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NOTES 6
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K
K
K
© KROHNE 03/2009 - 4000285103 - TD H250 R03 en - Subject to change without notice.
KROHNE product overview
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Head Office KROHNE Messtechnik GmbH & Co. KG
Ludwig-Krohne-Str. 5
D-47058 Duisburg
Tel.:+49 (0)203 301 0
Fax:+49 (0)203 301 10389
info@krohne.de
The current list of all KROHNE contacts and addresses can be found at:
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