"Fluidistor" 
Gas Flow Meter
GD 300 Ex / GD 500 Ex

GD300-COLLAGE

Our experience - your success!

Welcome to “Fluidistor”!!

The Fluidistor gas flow meter offers a solution for precise gas quantity measurement that is crucial for your success.

As manufacturer of the Fluidistor, Esters Elektronik GmbH can draw on nearly 50 years of experience in the industrial area of ​​measurement and control technology.

The Fluidistor gas flow meter GD 300 Ex / GD 500 Ex is developed and produced exclusively in Germany by qualified specialists.

See for yourself!

Basic questions about the Fluidistor!

QM

What is a Fluidistor?

A "Fluidistor" is a gas flow meter for gas quantity or gas volume measurements.
The type designations are GD 300 Ex or GD 500 Ex.

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QM

What is the Fluidistor measurement principle? 

The Fluidistor flow meter GD 300 Ex / GD 500 Ex operates according to the principle of a „Fluidistor oscillator“.
The gas passes the Fluidistor measuring head either directly or via an orifice in the main pipe.

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QM

What kind of gases can be measured?

The Fluidistor can be used to measure biogas, industrial gases as well as all technical and medical gases.

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QM

Wet and dirty gases!

No problem!  
The measuring of wet and dirty gases, such as sewage gas, biogas or contaminated industrial process gases do not influence the measurement results.

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QM

Mixed gases with a variable gas composition/mixtures!

No problem!
Changes of the gas composition in mixed gases do not affect the measurement result.

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QM

Maintenance! Expensive?

No!
The Fluidistor keeps you independent!
The replacement of the platinum wire sensor or a cleaning of the Fluidistor can be done by yourself on site.
No recalibration required!

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Application Areas

Klärbecken

Sewage gas

Contamination and high water vapor saturation of the gas results with other measurement principles to erroneous measurements at the digester.
The Fluidistor is the functioning alternative!

Gas_MIXER

Medical gases

Consumption measurement of oxygen, nitrous oxide, xenon, nitrogen, medical carbon dioxide and helium from total strand up to the healthcare beds or operating room with the Fluidistor

Wasserstoff

Hydrogen

Exact gas volume measurement of hydrogen

Biogasanlage

Biogas

Humidity and sulfur loads of several 100 ppm lead to measurement errors.
The Fluidistor is the functioning alternative!

Industrial gases

Quantity measurement of carbon dioxide (fermentation and cooling), argon (steel production), nitrogen, oxygen and natural gas (burner control, supply control of the boiler)
The Fluidistor also works with changing gas mixtures!

Druckluft

Compressed air controlling

Liter precise collection of consumption volume for billing purpose and identification of potential savings

Klärbecken

Sewage gas

Contamination and high water vapor saturation of the gas results with other measurement principles to erroneous measurements at the digester.
The Fluidistor is the functioning alternative!

Gas_MIXER

Medical gases

Consumption measurement of oxygen, nitrous oxide, xenon, nitrogen, medical carbon dioxide and helium from total strand up to the healthcare beds or operating room with the Fluidistor


Wasserstoff

Hydrogen

Exact gas volume measurement of hydrogen


Biogasanlage

Biogas

Humidity and sulfur loads of several 100 ppm lead to measurement errors.
The Fluidistor is the functioning alternative!


Industrial gases

Quantity measurement of carbon dioxide (fermentation and cooling), argon (steel production), nitrogen, oxygen and natural gas (burner control, supply control of the boiler)
The Fluidistor also works with changing gas mixtures!

Druckluft

Compressed air controlling

Liter precise collection of consumption volume for billing purpose and identification of potential savings

Klärbecken

Sewage gas

Contamination and high water vapor saturation of the gas results with other measurement principles to erroneous measurements at the digester.
The Fluidistor is the functioning alternative!

Biogasanlage

Biogas

Humidity and sulfur loads of several 100 ppm lead to measurement errors.
The Fluidistor is the functioning alternative!

Gas_MIXER

Medical gases

Consumption measurement of oxygen, nitrous oxide, xenon, nitrogen, medical carbon dioxide and helium from total strand up to the healthcare beds or operating room with the Fluidistor

Wasserstoff

Hydrogen

Exact gas volume measurement of hydrogen

Industrial gases

Quantity measurement of carbon dioxide (fermentation and cooling), argon (steel production), nitrogen, oxygen and natural gas (burner control, supply control of the boiler)
The Fluidistor also works with changing gas mixtures!

Druckluft

Compressed air controlling

Liter precise collection of consumption volume for billing purpose and identification of potential savings

Examples of Application

Klärbecken

Sewage gas

Avoiding incorrect measurements at the digestion tower
The measurement principle of the Fluidistor is the functioning alternative!

More
Biogas_500x333

Biogas

Produce - Electricity - Feeding
The Fluidistor gas flow meter for all processes on your biogas plant!

More

Principle of Measurement

The Fluidistor gas flow meter GD 300 Ex/GD 500 Ex operates according to the principle of a „Fluidistor oscillator“. The gas passes the Fluidistor measuring head either directly (GD 500 Ex) or via an orifice (GD 300 Ex) in the main pipe.

The gas is discharged through the orifice into the
Fluidistor measuring chamber. Directly behind the inlet there is a triangular damming body, which, due to the unstable middle position, forces the gas either to flow past on the right or left. At the level of the damming body  …

A detailed description can be found either in our video or click “More”!

The Fluidistor gas flow meter GD 300 Ex/GD 500 Ex operates according to the principle of a „Fluidistor oscillator“. The gas passes the Fluidistor measuring head either directly (GD 500 Ex) or via an orifice (GD 300 Ex) in the main pipe.

The gas is discharged through the orifice into the
Fluidistor measuring chamber. Directly behind the inlet there is a triangular damming body, which, due to the unstable middle position, forces the gas either to flow past on the right or left. At the level of the damming body  …

A detailed description can be found either in our video or click “More”!

Overview and Highlights

GD300-COLLAGE

The Fluidistor gas flow meter GD 300 Ex / GD 500 Ex is used for gas volume measurements and for technical and medical gases.

The flow meters work on the principle of “fluidistor oscillator”. The measuring principle is dense independent and has no moving parts, thus there are no wearing parts in place and a recalibration is not necessary.

The Fluidistor gas flow meters are available from DN 15 – DN 200.

  • DN 15 – DN 25 (1/2″ – 1″) with an external pipe thread
  • DN 25 – DN 200 sandwich / Wafer 
  • DN 40 – DN 400 with flange

Highlights

  • oscillating measuring principle suitable for almost all types of gas (including mixed gases), no moving components
  • measurement of all gases and gas mixtures with equal accuracy

  • measuring housing, orifice and measuring
    labyrinth made of stainless steel, also available as heavy duty construction

  • resistant to dirt, e.g. oil, rust, sulphur

  • excellent results measuring moist gases with condensate

  • mounting in falling direction into gas lines even for 100 % wet biogas due to integrated condensate drain

  • optional integrated ball valve (blocking valve) in the GD 300 for removal/installation of the
    platinum sensor without emptying the system

  • integrated calculator HB 300 in the measuring head with mA- (normalization optional) or pulse output

  • short response time T90 ≤ 50 ms
    with a flow velocity ≥ 0,25 m/s

  • high accuracy (±1,5 % of true value)

  • high reproducibility (0,1 % of true value)

  • low pressure loss

  • each flowmeter with calibration report

  • no recalibration required

  • Ex II 1 / 2 G Ex ia / e mb IIC T4 Ga / Gb (Zertifikat Nr. EX5 13 07 14689 003)

Technical Data

GD 300 Ex

Wafer / Sandwich

GD_300_Wafer
DN 80

Nominal size: DN 25 bis DN 200
Process connection: Wafer / Sandwich
Installation lenght:  65 mm

GD 300 Ex

flange

GD_300_FLANSCH
DN 200

Nominal size: DN 25 to DN 400
Process connection:
flange acc. to DIN EN-1092-2 or
DIN 2576, flange acc. to ASME B 16.5
Installation lenght: depending on nominal size (300 – 500 mm)

GD 500 Ex

external pipe thread

GD_500
DN 15

Nominal size: DN 15
Process connection: external pipe thread 
R 1/2”
G 1”
Installation lenght: 300 mm

  • Pressure Loss
  • Accuracy of Measurement
  • Installation Instructions
  • Maintenance

The diagram applies to gases with a density of air at NTP (0°C and 1013 mbar). The decrease of pressure is always proportional to the gas density. If e.g. the operating pressure rises by 100% the pressure drop doubles.

Pressure Loss
Diagram: Flow rate vs. Pressure loss

At low flow rates the density (or actually the viscosity) of the gas influences the accuracy.

Above the limit value (Qt), the accuracy is 1,5 % of the measured value. Below Qt the accuracy is 5 % of the measured value.

Example measurement range:

Qt bei 1,5% accuracy

DN inches m3/h kg/Nm3 m3/h
mm
Qmin (5 %)
Qt (1,5 %)
density
%
Qmax
15
1/2"
0,06
3,52
0,5
16
22
80
3"
8,0
64
1,0
8
800
80
3"
8,0
48
1,2
6
800
150
6"
30,0
240
1,0
8
3.000
150
6"
30,0
180
1,2
6
3.000
DN (mm) inches m3/h Qmin (5%) m3/h Qt (1,5%) kg/Nm3 (density) m3/h % m3/h Qmax
15
1/2"
0,06
3,52
0,5
16
22
80
3"
8,0
64
1,0
8
800
80
3"
8,0
48
1,2
6
800
150
6"
30,0
240
1,0
8
3.000
150
6"
30,0
180
1,2
6
3.000

Exampla:

At a density of x kg/m3 the limit value is Qt = y % of Qmax.

For natural gas with a methane component of 85 % a density of 0,85 kg/m3 is assumed.

DN inches m3/h
0,5
=
16 %
1,0
=
8%
1,2
=
6%
2,0
=
4%
4,0
=
2%
8,0
=
1%
  • In the project planning, ensure that the pipe size is not increased by the gas meter in order to avoid false measurements.
  • The defined measurement ranges for individual nominal diameters must not be exceeded. A straight inlet zone of 10 x DN and an outlet zone of 5 x DN is required.
  • In the pipe network in front of the flowmeter, the gas velocity may not exceed supersonic speed.
  • Supercritical pressure drops and pulsating flows must be avoided.
  • When installing the GD 300/GD 500 under the ceiling, a distance of at least 25 cm from the lid to the ceiling must be complied, that the lid can be removed for connecting the sensor cable.
  • When installing the GD 300 Ex Wafer note that the lid is on the left-hand side, a minimum distance of 25 cm is required.
  • In case of falling below the Qmin (measuring range) display of measured values is not possible.
  •  The flowmeter GD 300 Ex / GD 500 Ex can be installed in a horizontal or vertical position. A condensate drain is integrated in the measuring head, which ensures the outflow of condensate of a 100% wet gas without sediments
  • The inclined measuring head ensures the outflow of condensate when installed in horizontal pipes.

With us you stay independent!

With the Fluidistor GD 300 Ex / GD 500 Ex you are completely independent concerning repair & maintenance.

The oscillating measuring method according to the Fluidistor principle requires no moving parts and no sensitive sensor materials, therefore an almost maintenance-free operation of the GD 300 Ex / GD 500 Ex is possible.

The integrated platinum wire sensor can be replaced without removing the gas flowmeter from the pipe system. A sensor change does not affect the calibration of the flow meter.

Recalibrations at regular intervals are not required and the cleaning of the flowmeter can be made directly on site. You can check the functionality of the sensors independently and gain independence from external resources.

You do not have to order  a service technician to come onsite or to remove the flow meter and send it in.

Download

  • All
  • Datasheet
  • Instruction Manual
  • Certificates
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Application example: Sewage gas

GD 300 Ex - The solution for gas measurement at the digestion tower on your plant

GD 300 Ex - The solution for gas measurement at the digestion tower on your plant

?
Is it possible that you discovered that again and again there are differences between gas production and gas consumed on your sewage treatment plant?

Finally, theres is a solution!
The Fluidistor – measurement technology provided by Esters Elektronik GmbH!

Be persuaded by the comments from your colleagues about the Fluidistor in use:

"The Esters Fluidistor installed at the CHP always delivered exact measurements without interference. This has convinced us. We have now opted for the installation of the Fluidistor at the digester"
KA
Jürgen Orth
Plant manager, Sewage plant Kitzingen
"Since then we have exchanged our thermal measurement by an Esters measurement, we are now able to measure wet gases at the digester correctly. A very reliable product."
KA
Wolfgang Stieber
Plant manager, Sewage plant Marktheidenfeld
"Since six years the measurement of ester electronics GmbH provides us with always correct readings and is very low maintenance. Relaxed as it gets."
KA
Hubert Neubauer
Foreman, Sewage plant Seligenstadt

Does a good job where other products fail!

Wash_Me

Contamination and high water vapor saturation of the gas results with other measurement principles to erroneous measurements at the digester.

The Fluidistor measuring principle of the GD 300 Ex is impervious to water vapor saturation and particle contamination of the gas. An influence of the measured value due to condensation on the sensor does not occur due to the measuring principle.

The Fluidistor has no moving parts, such as turbine wheel or impeller which can influence the measured value by debris due to particulate contamination.

Both in thermal measurement methods as well as methods of measurement with mechanically moving parts, debris occurs due to the contamination of the gas. This debris affects the thermal conductivity or bearing and turbine wheels.

The Fluidistor prevents gradual measurement errors! 

Severe dirt, due to e.g. foaming or high sulfur load can be cleaned directly with steam jet onsite. Depending on the installation situation of the Fluidistor this can be done in many cases even in the installed state. The Fluidistor measuring principle is not affected by water vapor saturation, sulfur pollution or contamination of the gas and provides accurate measured values. The Fluidistor is working out the calculation!

The ratio between the generated gas and consumed gas is plausible.

Precise measurement = optimal control of your fermentation processes

Klärbecken

Precise measurements of the gas yield are the base for correct statements about the quality of the fermentation process.

This gives you the opportunity to plan and control the in- and outflow of substrate in order to optimize the holding time. The holding time allows a maximum gas yield.

In optimum, this may even lead to a reduced amount of ferments and / or a saving of purchased electricity.
But remember:

At the beginning of the optimization, exact measuring values are necessary!

Fluidistor gas flow meter GD 300 Ex

The GD 300 Ex has the function of a fluidistor oscillator. The volume flow is measured by oscillations.  indicated by vibrations measured.

This simple and robust measuring principle is based on a simple physical principle and requires no moving parts.

This results in a long-term stability and low maintenance.
Measurement of low flow rates (0.2 m / s) and low pressure (from 1 mbar) are no problem for the GD 300 Ex.

Messeigenschaften

  • Accuracy: 1,5% des Messwertes
  • Measurement dynamic: min. 1:100
  • Short response time of T90 = 50 ms
  • Low pressure drop
  • Pipe material: stainless steel 1.4571
  • Easy cleaning

Application example: Biogas

Produce - Electricity - Feeding: Fluidistor gas flow meter for all processes

Produce - Electricity - Feeding: Fluidistor gas flow meter for all processes

?

How much gas is my  fermenter producing?
How does the billing after Nm³ and combustion heat output looks like?
How much is the gas production of the entire plant?
Is the gas yield in to input correct?
How is the efficiency of my CHP?
Is the efficiency at the optimum?

Questions, we can answer!

Optimized production processes require precise measurement technology

Through precision measurement technology production processes become more efficient. Permanent rationalization pressure forces the ongoing optimization of production and maintenance processes. Meaningful measurements provide the basis for decisions.

Car manufacturers optimize their products by hundreds of thousands of kilometers of testing and months on the test stand. Your biogas plant is not a mass product but can still be significantly improved – with the help of precise and targeted use of measurement technology.

Each loss of efficiency costs your money – every day!

E

Produce

Gas flow measurement at the fermenter

A typical system with 500 kW (electric) needed daily 22 – 25 tons of corn silage (approx € 45.00 / tonne).

With a gas volume measurement at the fermenter and the integration of a gas analysis, you know at any time how much biogas, you can produce.

With the Fluidistor and the flow computer GDR 150x you have all relevant parameters in view.

V

Electricity

Gas flow measurement at the CHP​

The CHP and the fermenter are the heart of your biogas plant. Here it is decided whether and how much profit you generate.

With the Fluidistor and the flow computer GDR 150x you have all relevant parameters in view.

E

Feeding

With a gas quantity measurement and integration of a gas analysis, the chemically bound primary energy in the raw biogas (kWh) can be determined based on the data. The so-called combustion heat output is a more precise basis for billing compared to the sole billing according to Nm³.

With the Fluidistor and the flow computer GDR 150x you have all relevant parameters in view.

E

Produce

Gas flow measurement at the fermenter

A typical system with 500 kW (electric) needed daily 22 – 25 tons of corn silage (approx € 45.00 / tonne).

With a gas volume measurement at the fermenter and the integration of a gas analysis, you know at any time how much biogas, you can produce.

With the Fluidistor and the flow computer GDR 150x you have all relevant parameters in view.

V

Electricity

Gas flow measurement at the CHP​

The CHP and the fermenter are the heart of your biogas plant. Here it is decided whether and how much profit you generate.

With the Fluidistor and the flow computer GDR 150x you have all relevant parameters in view.

E

Feeding

With a gas quantity measurement and integration of a gas analysis, the chemically bound primary energy in the raw biogas (kWh) can be determined based on the data. The so-called combustion heat output is the more precise basis for billing compared to the sole billing according to Nm³.

With the Fluidistor and the flow computer GDR 150x you have all relevant parameters in view.

Fluidistor gas flow meter GD 300 Ex

The gas flow meter GD 300 / GD 300 Ex is optimized by material, design and measurement principled for the quantitation of raw biogas and other demanding medium.

On request the Fluidistor can be completely produced of stainless steel 1.4571 and installed both indoors and outdoors. The integrated condensate drain allows installation in falling gas lines. Since the measuring principle requires nomoving parts, the Fluidistor is the solution for measuring 100% saturated gases directly at the fermenter.

Principle of Measurement - Fluidistor

The flow meter GD 300 Ex / GD 500 Ex operates according to the principle of a „Fluidistor oscillator“. The gas passes the Fluidistor measuring head either directly or via an orifice in the main pipe.

The gas is discharged through the orifice into the Fluidistor measuring chamber. Directly behind the inlet there is a triangular damming body, which, due to the unstable middle position, forces the gas either to flow past on the right or left. At the level of the damming body in the right and left wall of the Fluidistor measuring chamber are two openings which are connected to each other by a channel. If the gas flows to the left from the damming body, a negative pressure is created on the left side wall or at the opening of the connecting channel. This negative pressure is balanced through the right opening of the connecting channel. The pressure equalization of the negative pressure causes a change of flow direction from the left to the right side. The entire process is then repeated on the right side.

The period of time required for pressure equalization corresponds to a special amount of gas (litre/pulse), which has passed through the GD 300/GD 500. The frequency of the pressure equalization is proportional to the flow velocity.

The changing flow through the connecting channel is detected by a platinum wire (diameter 15 μ) in the connecting channel. A constant voltage is applied to the wire, which is permanently monitored. At the moment when the pressure equalization occurs in the connecting channel, the wire is not circulated around by gas for a short time and heats up due to the current flowing through the wire. This causes a temporary rise of the resistance in the platinum wire (like a Pt100 sensor) and the voltage drop (V=R*I) increases.

This increase in voltage is detected by the integrated calculator HB 300 Ex. Using the current output the measured value is directly transferred to a superior PLC system. Using the pulse output the signal is transferred to the external Flow Computer GDR 1501.

Fluidistor Messprinzip-1

outflow of the gas through the right outlet

active pressure equalization in the connecting channel from right to left

Messprinzip-2
pressure compensation in the connecting channel with an incipient change of direction from left to right
Messprinzip-3

short-term nonoperating of the gas flow in the connection channel

heating of the platinum wire

GD 300 Ex - Sandwich / Wafer

Technical Information

Description
NOMINAL SIZE (NW):DN 25 - DN 200
PROCESS CONNECTION:sandwich / Wafer, installation length: 65 mm
PRESSURE RANGE:0,5 bar, 10 bar, 16 bar, 40 bar
TEMPERATURE:-20 to +120°C; gas as well as environment, max. 80°C for the Ex version
MEASURING HEAD:Material stainless steel 1.4404 (V4), aluminium (AL)
MEASURING LABYRINTH:Material stainless steel 1.4404 (V4), aluminium (AL)
TUBE BODY:Material stainless steel 1.4404 (V4), aluminium (AL)
SENSOR:platinum
PROTECTION CLASS:IP 65
OUTPUT:
(STANDARD)
pulse output: pulse 24 V, DC, max. 200 Hz (pulse width 1 - 2 ms)
status output for sensor break detection: 24 V, DC (pollution monitoring with redundant platinum wire sensor)
OUTPUT
(INTEGRATED CALCULATOR):
pulse output: pulse 24 V, DC, 1 pulse=0.01, 0. 1, 1, 10 or 100 m³ current interface: (0)4 - 20 mA = 0 - x Nm³/h , status output for sensor break detection: 24 V, DC (pollution monitoring with redundant platinum wire sensor) standard: DIN 1343, DIN 6358, DIN ISO 2533, DIN 102/ISO 1-1975 fixed value temperature: -50 °C to 200°C fixed value absolute pressure: -0,8 bar to 100 bar
ATEX CERTIFICATION:Ex II 1 / 2 G Ex ia / e mb IIC T4 Ga / Gb, EG certificate no: TPS 13 ATEX 14689 003 X
(certificate no. EX5 13 07 14689 003)
BALL VALVE:OPTION AVF
ball valve (blocking valve) for GD 300 with flange removal/installation of the platinum wire sensor without emptying the system

Measuring Range

NWorifice 13orifice 15orifice 17
250,20 - 20 m3/h0,35 - 35 m3/h0,70 - 70 m3/h
320,20 - 20 m3/h​0,60 - 60 m3/h​1,00 - 100 m3/h​
400,20 - 20 m3/h​0,90 - 90 m3/h​2,00- 200 m3/h​
500,20 - 20 m3/h​1,10 - 110 m3/h​2,50 - 250 m3/h​
650,90 - 90 m3/h​1,70 - 170 m3/h​4,50 - 450 m3/h​
801,40 - 140 m3/h​4,50 - 450 m3/h​8,00 - 800 m3/h​
1002,70 - 270 m3/h​6,50 - 650 m3/h​10,00 - 1000 m3/h​
1254,00 - 400 m3/h​8,00 - 800 m3/h​15,00 - 1500 m3/h​
1506,00 - 600 m3/h​12,00 - 1200 m3/h​30,00 - 3000 m3/h​
20012,00 - 1200 m3/h​25,00 - 2500 m3/h​60,00- 6000 m3/h​

Dimensions and Weights

NW (DN)D (Wafer)
2570,5
3281
4091
50105,5
65126
80142
100161
125191
150217
200272
250327
NWD (Wafer)Gew. (Kg) ALGew. (Kg) V4
25
32
40
50
65
801425,1
100
125
150
200

GD 300 Ex - with flange

Technical Information

Description
NOMINAL SIZE (NW):DN 25 - DN 200
PROCESS CONNECTION:Flange acc. to DIN EN-1092-2 or DIN 2576 depending on availability flange acc. to ASME B 16.5
PRESSURE RANGE:0,5 bar, 10 bar, 16 bar, 40 bar
TEMPERATURE:-20 to +120°C; gas as well as environment, max. 80°C for the Ex version
MEASURING HEAD:Material stainless steel 1.4571 (V4A), aluminium (AL)
MEASURING LABYRINTH:Material stainless steel 1.4571 (V4A), aluminium (AL)
TUBE BODY:Material stainless steel 1.4571 (V4A)
SENSOR:platinum
PROTECTION CLASS:IP 65
OUTPUT:
(STANDARD)
pulse output: pulse 24 V, DC, max. 200 Hz (pulse width 1 - 2 ms)
status output for sensor break detection: 24 V, DC (pollution monitoring with redundant platinum wire sensor)
OUTPUT
(INTEGRATED CALCULATOR):
pulse output: pulse 24 V, DC, 1 pulse=0.01, 0. 1, 1, 10 or 100 m³ current interface: (0)4 - 20 mA = 0 - x Nm³/h , status output for sensor break detection: 24 V, DC (pollution monitoring with redundant platinum wire sensor) standard: DIN 1343, DIN 6358, DIN ISO 2533, DIN 102/ISO 1-1975 fixed value temperature: -50 °C to 200°C fixed value absolute pressure: -0,8 bar to 100 bar
ATEX CERTIFICATION:Ex II 1 / 2 G Ex ia / e mb IIC T4 Ga / Gb, EG certificate no: TPS 13 ATEX 14689 003 X
(certificate no. EX5 13 07 14689 003)
BALL VALVE:OPTION AVF
ball valve (blocking valve) for GD 300 with flange removal/installation of the platinum wire sensor without emptying the system

Measuring Range

NWorifice 13orifice 15orifice 17
400,20 - 20 m3/h​0,90 - 90 m3/h​2,00- 200 m3/h​
500,20 - 20 m3/h​1,10 - 110 m3/h​2,50 - 250 m3/h​
650,90 - 90 m3/h​1,70 - 170 m3/h​4,50 - 450 m3/h​
801,40 - 140 m3/h​4,50 - 450 m3/h​8,00 - 800 m3/h​
NWorifice 25orifice 27orifice 30
1002,70 - 270 m3/h​6,50 - 650 m3/h​10,00 - 1000 m3/h​
1254,00 - 400 m3/h​8,00 - 800 m3/h​15,00 - 1500 m3/h​
1506,00 - 600 m3/h​12,00 - 1200 m3/h​30,00 - 3000 m3/h​
20012,00 - 1200 m3/h​25,00 - 2500 m3/h​60,00 - 6000 m3/h​
25012,00 - 1200 m3/h​25,00 - 2500 m3/h​75,00 - 7500 m3/h​
30030,00 - 3000 m3/h​50,00 - 5000 m3/h​113,00 - 13000 m3/h​
35030,00 - 3000 m3/h​50,00 - 5000 m3/h​140,00 - 14000 m3/h​
40050,00 - 5000 m3/h​100,00 - 10000 m3/h​160,00 - 16000 m3/h​

Dimensions and Weights

NWL (S/L) (mm)D (mm)DH (mm)Weight (Kg)
reduced flange
Weight (Kg)
full flange
403001501059,511,5
503001651251113
653001851451416
803002001601416
100300/36022018016/1817/18
1253002502101719
150350/50028524021/2429/31
2003503402952535
2504504053553549
3005004604104151
3505005204705568
4005005805257091

GD 500 Ex

Technical Information

Description
NOMINAL SIZE (NW):DN 15 - DN 25
PROCESS CONNECTION:external pipe thread
R 1/2”
G 1”
PRESSURE RANGE:0,5 bar, 10 bar, 16 bar, 40 bar
TEMPERATURE:-20 to +120°C; gas as well as environment, max. 80°C for the Ex version
MEASURING HEAD:Material stainless steel 1.4404 (V4), aluminium (AL)
MEASURING LABYRINTH:Material stainless steel 1.4404 (V4), aluminium (AL)
SENSOR:platinum
PROTECTION CLASS:IP 65
OUTPUT:
(STANDARD)
pulse output: pulse 24 V, DC, max. 200 Hz (pulse width 1 - 2 ms)
status output for sensor break detection: 24 V, DC (pollution monitoring with redundant platinum wire sensor)
OUTPUT
(INTEGRATED CALCULATOR):
pulse output: pulse 24 V, DC, 1 pulse=0.01, 0. 1, 1, 10 or 100 m³ current interface: (0)4 - 20 mA = 0 - x Nm³/h , status output for sensor break detection: 24 V, DC (pollution monitoring with redundant platinum wire sensor) standard: DIN 1343, DIN 6358, DIN ISO 2533, DIN 102/ISO 1-1975 fixed value temperature: -50 °C to 200°C fixed value absolute pressure: -0,8 bar to 100 bar
ATEX CERTIFICATION:Ex II 1 / 2 G Ex ia / e mb IIC T4 Ga / Gb, EG certificate no: TPS 13 ATEX 14689 003 X
(certificate no. EX5 13 07 14689 003)

Measuring Range

NWInchesMeasuring Range
151/2"0,06 - 22 m3/h
251"0,06 - 22 m3/h

Dimensions and Weights

NWWeight (Kg) ALWeight (Kg) V4
1548
2548