FLOW
www.platon-direct.eu
Product Data Sheet
Metal Tube VA Gas or Liquid
METAL TUBE VA FLOWMETER TYPE GMT
FEATURES
GMT metal tube flowmeters are variable area meters
of totally welded stainless steel construction. Liquid
or Gas flowing up the tapered flowtube lifts the float
to an equilibrium position, dependent on flow rate,
and a magnetically coupled pointer indicates this
flow on an external scale. The large meter indication
is easily visible at a distance, with the pointer moving
over a 150o scale. Each scale is produced specifically
for the fluid involved and process conditions
expected: several flow ranges are available for meters
of each standard line size. All gas flow meters are
supplied with an integral piston damper to smooth
out flow pulsations.
Installation is simple, in a vertical section of flow line:
meters can be supplied with DIN, ANSI or other
standard flanges, or BSP or NPT screwed connections.
The robust construction with no glands or seals to
leak means the meters are suitable for high pressure
applications, or extremes of temperature. The
standard GMT is totally self contained and needs no
external power.
Alternative materials are available to special order for example Hastelloy or Monel wetted parts, PTFE
lined versions. For lower cost, Brass or Stainless steel
bodied meters `” - 2” in size are available with
screwed connections. The indicator can be provided
with one or two flow alarm sensors, adjustable over
the meter operating range. Full electronic
transmission and totalisation is also available, using
the “VAMPIRE” electronic module.
Metal tube meters are ideal for arduous industrial
service as an alternative to large glass tube
flowmeters. They have particular advantages, where
fluids are opaque or staining, or to provide higher
safety and security for dangerous or toxic fluids.
DS1220/1221
15, 25, 50, 75 and 100mm
1/2" 1" 2" 3" & 4" line sizes
No power required
Clearly visible meter
Scaled for process fluids
Easy installation - flanged
or screwed
No glands or seals
Robust, simple
construction
Pulsation damper on gas meter
PRINCIPLE OF OPERATION
The metering element consists of a precision
machined tapered tube and a float. The height to
which the float rises in taper is determined by the
gap at which upward flow force and float weight are
balanced.
A permanent magnet encapsulated within the
stainless steel float drives the external magnetically
coupled pointer. Float movement is related to flow
rate, and the indicator scale is marked in the correct
units of flow for the process conditions.
The standard unit requires no electrical power.
Because the measuring element is a sharp edged
disc, the meter is
relatively insensitive to
viscosity changes in the
fluid, and to pipe bends
in
the
external
pipework. The only
moving part in the flow
is the float, which is
retained in place by float
guides at either end of
the meter.
LICO Electronics GmbH, A-2320 -Kledering email: [email protected] [email protected] Tel +43 1 706 43 00
DS1220
Issue 5: 06.
Page 1 of 4
SPECIFICATION
Flanged flow tube
316 Stainless steel, all welded
construction
Indicator housing
Flanges
DIN PN16 (BS4504) or
ANSI 150 standard.
Other flanges to order
15, 25, 50, 80, 100mm
To flange rating, 100 bar max
Protection
Brass or 316 Stainless Steel
`”, 1” or 2” BSPP or NPT
standard
75 bar max GMTB (Brass)
100 bar max GMTS (Stainless)
316 Stainless steel
PVC float on low pressure
drop option units
All gas flowmeters have a
dashpot damper built-in
Turndown
Accuracy
Typically 100mm, 150 degrees
Produced to order to suit
process fluid and conditions.
Air and water flow ranges
quoted opposite
Typically 10:1
±2% FSD
Hysteresis
±0.5% FSD
Fluid Temperature
200oC max
(higher to special order)
Less than 0.5 secs
Vertically upwards
1.6µm
Line Sizes
Pressure
Screwed flow tube
Connections
Pressure
Float
Pulsation damper
Scale length
Scales
Response time
Flow direction
Surface Finish
Polyester coated aluminium
alloy,with UV stable
polycarbonate face
IP65
ORDER CODE
Model Number
GMT - - 3 1 4 G
GMT family
- (Example is 2”GMT,Flanged PN16,
ranged 20 - 180m3/h Air)
Fluid
G = Gas, max 2"
L = Liquid, max 4"
Model Type
No digit Flanged stainless
B
Brass body screwed
S
Stainless body screwed
Digit to identify specified Flow
Range (See Table on next page)
Electronic outputs
No digit standard indicator
A
Single flow alarm
AA
Dual flow alarm
XA
AC powered transmitter
XD
CENELEC Approved
Looped powered transmitter
End Connections
1
Flanged DIN PN16
2
Flanged ANSI 150lb
3
Flanged DIN PN40
4
Flanged ANSI 300lb
5
Screwed BSPP female
6
Screwed NPT female
Flow pipe size
1
15mm or `”
2
25mm or 1”
3
50mm or 2”
4
80mm or 3”
5
100mm or 4”
Note: Not all options available together.
TO ORDER
Specify process conditions at
measurement point (fluid type,
density/SG, viscosity,
temperature, and pressure) plus
operational flow range and units
LICO Electronics GmbH, A-2320 -Kledering email: [email protected] [email protected] Tel +43 1 706 43 00
DS1220
Issue 5: 16.02.06
Page 2 of 4
FLOW RANGES
STANDARD UNITS
LOW DP GAS UNITS
Size/Model
Flow
Digit
Water(20oC)
Air at ATP
(m3/hr)
Max DP
(mbar)
Flow
Digit
Air (ATP)
m3/hr
15mm (GMT1)
1
2
3
4
20 - 160 l/h
20 - 250 l/h
40 - 400 l/h
60 - 600 l/h
0.5 - 5.0
0.5 - 7.5
1.2 - 12
2.0 - 18
15
30
20
35
A
B
C
D
25mm (GMT2)
1
2
3
4
5
6
0.1 - 1.0 m3/h
0.2 - 1.6 m3/h
0.2 - 2.5 m3/h
0.4 - 4.0 m3/h
0.6 - 6.0 m3/h
1.0 - 10.0 m3/h
3.0 - 30
4.0 - 50
10 - 75
12 - 120
20 - 200
30 - 360
15
30
35
80
160
400
A
B
C
D
50mm (GMT3)
1
2
3
4
0.6 - 6 m3/h
1.0 - 10 m3/h
2.0 - 16 m3/h
2.0 - 25 m3/h
20 - 180
30 - 300
60 - 600
100 - 1000
30
40
80
190
80mm (GMT4)
1
2
3
2.0 - 25 m3/h
3.0 - 40 m3/h
6.0 - 60 m3/h
N/A
N/A
N/A
140
220
525
1
10 - 100 m3/h
N/A
440
100mm (GMT5)
Max DP
(mbar)
0.3 - 3
0.4 - 4
0.5 - 7
1.0 - 9
Natural
Gas (ATP)
(m3/hr)
0.4 - 3.5
0.5 - 5
1.0 - 9
1.0 - 12
1.5 - 15
3 - 23
4 - 36
5 - 50
2 - 20
4 - 30
5 - 45
6 - 60
8
9
8
9
7
10
7
10
NOTES
1. Units will be scaled and calibrated for customers
specific process conditions, which may differ from
those tabulated (See overleaf ).
2.
Typical maximum liquid viscosity is 50cP, lower for
the highest flow ranges and small sizes.
3.
Screwed 1” units are not available for Flow Digit 6.
OPTIONS
1.
Oxygen Service
Standard units cleaned to required specification. Special units
available with Brass internal construction
2.
Alarm Output
Sensor
NAMUR type SJ2-N to DIN 19234
Approval
EEx ia IIC T6
Single or dual alarms can be fitted to a GMT flowmeter: the
sensor requires a suitable control room interface.
Please ask for suppliers separate data sheet.
3.
Electrical Output
All GMT flow tube sensors can be fitted with “VAMPIRE” mirco based
electronic transmitter and flow indicator units. Please see Data Sheet
DS1225.
4.
Alternative body Materials/Designs
The PTFE lined meter option is used for corrosive chemicals.
Float, guides and flange raised face are PFTE or ceramic.
The hygienic option with crevice free construction is polished to
0.4 - 0.8µm finish and fitted with Triclover connections.
In addition Triclover, RJT, DIN 11851, SMS connections can be fitted
to Std flanged body.
Refer to DS1221 for Screwed
GMT datasheet
LICO Electronics GmbH, A-2320 -Kledering email: [email protected] [email protected] Tel +43 1 706 43 00
DS1220
Issue 5: 16.02.06
Page 3 of 4
ALTERNATIVE FLUIDS
Approximate flow ranges for alternative process fluids and gas pressures can be
calculated using the following formulae. For a full calculation please contact our Sales
Team.
1.
Gases at pressure or temperature
For Air or gas flows where the pressure in the line on the discharge side of the
flowmeter is not atmospheric (1.013 bar), multiply the flow range at ATP quoted
in the table by a factor calculated as the square root of the pressure (in bar abs)
divided by 1.013.
Air flow in process =
P (abs)
1.013
x Air flow in table
For temperature changes
Air flow at T =
2.
293
T (K)
x Air flow in table
Alternative gases
For gases other than Air, find the Relative Density (RD) of the gas compared to Air, and divide the flow range
quoted for Air in the table by the square root of the Relative Density.
1
RD
Gas flow range = Air flow in table x
Examples of RD figures for some gases are as follows:
Acetylene
Argon
Butane
3.
0.898
1.380
2.007
Carbon dioxide
Hydrogen
Natural Glass
1.520
0.070
0.608
Nitrogen
Oxygen
Propane
0.968
1.105
1.522
Alternative Liquids
For non vicious liquids other than water, the main correction arises from the density/SG. For the process
liquid flow range multiply the Water flow range from the table by a factor D from below.
SG
D
0.6
1.328
0.7
1.221
0.8
1.134
0.9
1.062
1.0
1.000
1.1
0.947
1.2
0.900
1.3
0.858
1.4
0.821
For a liquid of 1.2 SG, the GMT411L flowmeter would have a full scale flow of 25 x 0.9 ie. 22 m3/hr: the scale
would be drawn 2 - 23 typically. Actual scale used would be rounded up, for example 2 - 23 in this case.
B
E
D
27
DIMENSIONS
126
C
Pipe Bore
A
B
C
D
E
F
C
F (AF)
A
106
15
51
48
250
51
26
27
25
45
51
250
49
34
41
50
42
66
250
49
27
60
80
42
87
300
75
N/A
N/A
100
39
100
400
113
N/A
N/A
INSTALLATION
1.
2.
3.
4.
5.
All VA meters are designed for vertical installations, with flow upwards. It is necessary to have 5 straight pipe
diameters upstream and 2 straight pipe diameters downstream. Bends in two planes should be avoided.
The upstream and downstream pipe bores should suit the normal size of the instrument, if possible.
Ensure that no ferromagnetic material is situated within 100mm of the indicator.
Before installing the meter, the pipeline should be flushed to remove any foreign matter, or swarf, likely to
collect on the float unit and magnet.
For ultimate protection a filter should be fitted upstream of the meter to remove large particles.
Every effort has been made during the preparation of this document to ensure the accuracy of statements and specifications. However, we do not accept liability for damage, injury, loss or
expense caused by errors or omissions made. We reserve the right to withdraw or amend products or documentation without notice..
LICO Electronics GmbH
Klederinger Str. 31
A-2320 Kledering, Austria
[email protected] www.lico.at
Tel. +43 1 706 43 00
www.mess-regeltechnik.at
DS1220
www.platon-direct.eu
Issue 5: 16.02.06
Page 4 of 4
FLOW
www.platon-direct.eu
Product Data Sheet
DS1221
Platon Screwed Metal Tube VA
Flowmeter
PLATON GMTB & S SERIES
FEATURES
Part of the Platon GMT Variable Area flowmeter
family, models GMTB and GMTS are brass or Stainless
Steel tube flowmeters with female screwed
connections. With 1/2”, 1” and 2” BSP/NPT threaded
fittings standard, the meters are ideal for arduous
industrial service as an alternative to large glass tube
flowmeters. They have particular advantages for gas
or liquid flow measurement at high pressures and
temperatures, where the fluids are opaque or dark
coloured or to provide higher operational security for
dangerous or toxic materials.
•
Economic construction
•
BSP/NPT screwed end fittings
•
Brass or Stainless Steel
•
Wide flow ranges
•
Sizes 15, 25, 50mm. 1/2”, 1”, 2” bore
•
Integral damping on gas flow lines
•
Local indication
•
Calibration for wide range of gases
The VA meter principle used in the Platon GMT
flowmeter measures the position of a float in a
precision-machined tapered tube. The float rises
with the flow up the taper until the upthrust from the
flow balances with the weight of the float. A magnet,
electron beam welded into the float casing, drives
the external meter indication over a 100mm scale
typically displaying a 10:1 flow range.
and liquids
•
Optional electronic outputs
Options available on the GMTB/GMTS include
(GMTA) flow alarm outputs for high or low adjustable
set points and electronic 4-20mA flow transmitter
(GMTX) outputs. All of these are available with
CENELEC intrinsically safe approval. For low-pressure
Natural gas flow measurement, models are available
with minimal line pressure loss. Special versions are
available for Oxygen service. All units are available
calibrated for the specific line conditions or fluid
involved.
LICO Electronics GmbH, A-2320 -Kledering email: [email protected] [email protected] Tel +43 1 706 43 00
DS1221
Page 1 of 2
SPECIFICATION
Body Materials
GMTB: Brass
GMTS: 316 Stainless Steel
316 Stainless Steel
Aluminium alloy LM25M polyester coated,
weather-proofed to IP65
BSP or NPT female thread sizes 1/2”, 1”, 2”
100mm, 150 degrees.
Air or water. Standard scales. Custom scales
available to order
Typically 10:1
±2% FSD
Less than 0.5%
GMTB: 75 bar
GMTS: 100 bar
200oC
o
-50oC (Based on Ambient of 20 C)
To smooth out flow fluctuations and noise
on gas flows, a dashpot damper is built in.
This is suitable for clean gases where
particulate matter is less than 50 microns.
Std variants available for low pressure drop
applications, using PVC float assemblies See
catalogue for full details. Specify line
pressure and flow range when enquirying.
CRN (Contact sales for details)
Float & Float Guides
Indicator Housing
Connections
Scale Length
Turndown
Accuracy
Hysteresis
Pressure
Temperature
OPTIONS AVAILABLE
Max
Min
Dashpot Damper
Natural Gas
Approvals
•
Calibration for different liquids or gases or for nonstandard operating process conditions
•
Flow alarm outputs (GMTA) or analogue 4-20mA
(GMTX, DS1225) outputs, with CENELEC approval if
required
•
Higher pressure or temperature models
•
Alternative materials
•
Flanged and hygienic connections
•
Hygienically polished
•
PTFE lined flanged units
•
Special models for Oxygen service, including all brass
designs. Stainless Steel flanged versions of the GMT
flowmeter are described in Roxspur data DS1220
J
H
I
E
G
INSTALLATION NOTES
A
1.
The instrument should be installed vertically in the pipework
with the direction of flow vertically upwards.
2.
Ensure that any ferromagnetic material is clear of the body
and indicator case by 100mm minimum.
3.
The upstream and downstream pipe bores should be the
same nominal size as the instrument. Straight pipe lengths of
5 diameters upstream and 2 diameters downstream should be
provided if possible.
4.
Before the meter is installed, the pipeline should be checked,
cleaned and flushed to eliminate any foreign matter. An
appropriate filter should be fitted upstream if any particle
present is likely to be greater than 50 microns.
5.
B
Model
15mm
GMT*151†
GMT*152†
GMT*153†
GMT*154†
GMT*251†
GMT*252†
GMT*253†
GMT*254†
GMT*255†
GMT*351†
GMT*352†
GMT*353†
GMT*354†
25mm
50mm
*
†
Max Water Flow
L/h 20oC
160
250
400
600
1000
1600
2500
4000
6000
6000
10000
16000
25000
D
C
A B
C D E
F
G
H
I
J
15
51
48
51 1/2” 27 26
1” 34 41
25 126 45 106 51 27 250
49
2” 27 60
50
42
66
Solenoid valves should not be used where they act directly on
the instrument.
Size
F
Max Air Flow
m3/h at 20oC, 1.013 bar abs
5
7.5
12
18
30
50
75
120
200
180
300
600
1000
Pressure Drop
At Max Flow (mbar)
15
30
20
35
15
30
35
80
160
30
40
80
190
In the model code, GMTB represents Brass and GMTS Stainless Steel flow tube construction.
The final suffix is L for Liquid and G for Gas operation.
Every effort has been made during the preparation of this document to ensure the accuracy of statements and specifications. However, we do not accept liability for damage, injury, loss or
expense caused by errors or omissions made. We reserve the right to withdraw or amend products or documentation without notice.
03HWAR0410
LICO Electronics GmbH
Klederinger Str. 31
A-2320 Kledering, Austria
[email protected] www.lico.at
Tel. +43 1 706 43 00
www.mess-regeltechnik.at
DS1221
www.platon-direct.eu
Page 2 of 2
FLOW
Product Data Sheet
DS1225
www.platon-direct.eu
Vampire - Electronic Indicator
TYPE GMTX
OPERATING PRINCIPLE
The GMTX electronic indicator with
microprocessor enhanced performance and
LCD panel display of flow rate and total,
designed for use with a metal tube variable
area flowmeter for liquid, gas or steam
measurement,
The VAMPIRE is a metal tube variable area
flowmeter: as the flow up through the
precision machined tapered tube increases,
the float rises, reaching an equilibrium
position. Electron beam welded within the
float casing is a magnet. Two “Hall effect”
magnetic field sensors measure both the
vertical and horizontal components on this
field. The angle of the magnetic field defines
the position of the float in the tapered tube.
This solid state measurement eliminates the
problems of mechanical hysteresis
associated with conventional magnetic
pointers. Field angle is also independent of
the absolute value of magnet strength, and
sensor sensitivity.
Suitable for use with body options, the
VAMPIRE (Variable Area Micro Proc-essor
Indicator Readout Electronics) has a totally
solid
state
measurement
system,
eliminating mechanical hysteresis errors.
Microprocessor interpolation between flow
data points, stored in factory calibrated
look-up tables, gives an improvement to
±1% accuracy for this technique.
The loop powered 4-20mA transmitter is
certified intrinsically safe to CENELEC
standards, for use in a potentially haz-ardous
area. Both loop powered and AC mains
powered units have separate high and low
flow alarm outputs.
ask for maintainance & operations manual OMM1033
FEATURES
•
•
•
•
•
•
•
•
4-20mA Transmitter
Intrinsically safe approval
Liquid or Gas Flow Calibration
Built-in Flow Totaliser
Operator adjustable High and Low
Alarms
1% Accuracy
VA meter reliability
Program setting password protection
email: [email protected]
DS1225
Issue 3: 23.02.06
www.platon-direct.eu
Page 1 of 3
The measurements are compared with a
look-up table of field and flow data, stored
in the VAMPIRE microprocessor memory on
factory flow rig calibration. Flow rate is
deduced accurately by interpolation
between data points. The micro-processor
converts the flow rate to correct
Engineering units for the digital display on
the LCD, adjusts the display meter pointer
and 4-20mA output, sets the Alarm status
and increments the totaliser as necessary.
Keypads on the VAMPIRE front panel are
used to set flow alarm levels, zero the
totaliser and select the digital display as rate
or total. Via a password entry procedure, the
site engineer can reset the display units or
even rescale the flowmeter to allow for
changes to process conditions. This
programme also has selections to define
what functions are accessible to the
operator (without password), plus zero, span
and time constant adjustments.
GMTX2
(25mm/1” Ø 250 Long)
GMTX3
(50mm/2” Ø 250 Long)
GMTX4
(80mm/3” Ø 300 Long)
GMTX5
(100mm/4” Ø 400 Long)
Model
Flow Digit
Digit
GMTX 1
(15mm/1/2” Ø 250 Long) 1
2
3
4
Water
(L/hr)
Air
(m3/hr)
Max ∆P
(mBar)
160
250
400
600
5
7.5
12
18
15
30
20
35
30
50
75
120
200
360
180
300
600
1000
-
15
30
35
80
160
400
30
40
80
190
140
220
525
440
SPECIFICATION
Temperature
Housing
Glands
Earth Stud
GMTXA
GMTXD
Display
Resolution
Alarm output
Totaliser
Approvals
Zener Barriers
DISPLAY
1000
1600
2500
4000
6000
10,000
6
10
16
25
25
25
60
100
NB Ranges are quoted for Water at 20oC, Air at ATP (1.013 Bar and 20oC).
Flow ranges for other fluids or process conditions on application. Units
will be calibrated for customers specific conditions. Normally, scales
offer 10:1 operating turndown. Pressure drops quoted are at
maximum flow rates.
Calibration
Analogue output
FLOW RANGES
1
2
3
4
5
6
1
2
3
4
1
2
3
1
GMTX: 50oC
GMTA: 70oC
Fluid
300oC
Polyester coated aluminium.
Weatherproof to IP65
4 off suitable for 2-5mm cable.
External M6 stud fitted.
85-265V, 50-60Hz, 0-2A max - current consumption
24Vdc loop powered (12V min, 30V max
LCD
0-100% analogue scale 90mm long.
Digital Display, 4/5 digits 10mm high.
Selectable for Flow Rate or Total.
±1% FSD
GMTXA
20mA into 600Ω max.
GMTXD
4-20mA, 2 wire transmitter.
0.5%on current output, 80mA
GMTXA: 2 x 8A SPCO relays @ 230V ac max 100mA,
max switched 30V, Internal Impedance 100Ω.
GMTXD: 2 x open collector transistors.
Display 1-19,999. Pulse output selectable instead of
flow alarm output. 50msec pulse
length. Max
pulse rate 2/sec (GMTXD).
GMTXD is intrinsically safe approvded to CENELEC
EExia IIBT4.
CRN (Contact Sales for details).
28V, 300W for 20mA line.
10V, 50W for alarm signals.
Ambient
Liquid Crystal
Display Panel
KEYPADS
High Alarm Value
Flow Rate Meter
(% Scale)
Low Alarm Value
Reset Totaliser (if programme allows)
Alarm Messages Flash
(when tripped)
Select Rate or Total Display
Enter Programme via Password
Programme Prompts
Engineering Units Selected
for Digital Display
Digital Display
- Flow Rate or Flow Total
email: [email protected]
DS1225
Issue 3: 23.02.06
www.platon-direct.eu
Page 2 of 3
METAL TUBE FLOWMETER FAMILY
INSTALLATION
VAMPIRE flow measurement electronics can be
supplied with any of the Platon metal tube variable
area flowmeters in the GMT family (see leaflet
DS1221 Screwed and DS1220 Flanged).
1.
Ensure that no ferromagnetic material is
situated within 100mm of the indicator.
2.
Model GMTXA has output relays de-energised
for alarm conditions.
3.
Model GMTXD transistor outputs are “off” for
alarm conditions. The negative line is common
to the transistor outputs and the loop supply.
4.
Intrinsically safe installations of Model GMTXD
should be in accordance with BS5345 Part 4.
The 4-20mA loop should be protected by an
approved standard 28 Volt 300W shunt diode
safety barrier. If required, the alarm outputs
should be connected via approved 10 Volt 50W
safety barriers.
5.
It is recommended that the VAMPIRE LCD
display is protected from both extremes of
freezing and direct sunlight.
Microprocessor Computation
and Calibration look-up tables
FEATURES
IP65 Keypad
Separate Terminal Box
Liquid Crystal Display Panel
Tapered Flow Tube
Solid State Magnetic Field
Sensors
‘Float’ Magnet Inside Electron
Beam Welded Casing
Pulsation Damper on Gas
Flow Meters
Stainless Steel, Brass or Ptfe
Lined Tube
Flanged or Screwed Connections
Every effort has been made during the preparation of this document to ensure the accuracy of statements and specifications. However, we do not accept liability for damage, injury, loss or
expense caused by errors or omissions made. We reserve the right to withdraw or amend products or documentation without notice..
LICO Electronics GmbH
Klederinger Str. 31
A-2320 Kledering, Austria
[email protected] www.lico.at
Tel. +43 1 706 43 00
www.mess-regeltechnik.at
DS1225
www.platon-direct.eu
Issue 3: 23.02.06
Page 3 of 3