Reliable technology and industry standard interfaces make the red-y smart series thermal mass flow meters (MFM) and mass flow controllers (MFC) particularly suitable for measurement and control in gas delivery systems and plant engineering applications.
With Profinet RT & EtherCAT
The massflow devices offer high accuracy and a wide dynamic range with 2 different instrument versions ‹Standard› and ‹Hi-Performance›:
Accuracy up to ± 0.3% of full scale + ±0.5% of reading
Turndown ratio 1 : 100 (extended turndown ratio on request)
The mass flow meters and controllers of the red-y smart series make use of the latest MEMS technology and have a digital (Modbus RTU) and analog interface as standard.
Profibus, Profinet RT and EtherCAT interfaces are available as option.
A wide range of cable and power supply accessories is available
Efficient device management with the free get red-y software:
Optional modules get red-y software:
See all available cables and power supply accessories for easy PC connection.
The red-y smart controller uses a tightly sealed control valve with a leak rate of less than 1×10-6mbar l/s He. The settling time is approximately 300 ms.
The measurement and control instruments offer a built-in LED status indication
High-quality components ensure long and trouble-free operation (does not apply to calibration, options and accessories)
High-precision Thermal Mass Flow Meter (MFM)
Flow up to 60 ln/min (64 SLPM)
Body size ¼”
Anodized aluminium version
High-precision Thermal Mass Flow Controller (MFC)
Flow up to 60 ln/min (64 SLPM)
Body size ¼”
Anodized aluminium version
Flow meters/flow controllers up to 450 ln/min
with gas connection G½”
All mass flow meters and mass flow controllers are available in stainless steel electropolished.
All mass flow meters and mass flow controllers are available with Profinet RT and EtherCAT interface.
Optimize and simplify your processes with our customized & modular flow solutions.
For a wide range of applications the thermal mass flow meters and mass flow controllers offer you a significant optimization and simplification of your processes.
| Measuring ranges | |
| Air/Full scale freely selectable | Body size ¼” from 0 … 25 mln/min to 0 … 60 ln/min (from 0 … 27 SCCM to 0 … 64 SLPM) Body size ½” from 0 … 60 ln/min to 0 … 450 ln/min (from 0 … 65 SLPM to 0 … 480 SLPM) |
| Instrument versions | |
| “Standard” The economic solution |
Accuracy: ± 1.0% of full scale* Turndown ratio: 1 : 50 |
| “Hi-Performance” With highest accuracy and turndown ratio (available for GSM < 200 ln/min (200 SLPM) / GSC < 150 ln/min (150 SLPM) (air)) |
Accuracy: ± 0.3% of full scale + ± 0.5% of reading* Turndown ratio: 1 : 100 *An additional error of ±0.25% may apply for analogue signals |
| Performance Data | |
| Media (real gas calibration) | Air*, O2*, N2, He, Ar, CO2, H2, CH4, C3H8 (other gases and gas mixtures on request) *O2 & N2 are calibrated with air |
| Response time | Meter (GSM): ± 80ms*; Controller (GSC): ± 500ms* *depending on device configuration & according to SEMI standard E17-1011, 5-100% of range under optimized conditions |
| Repeatability | ± 0.2% of full scale (according to SEMI standard E56-0309) |
| Longterm stability | < 1% of measured value / year |
| Power supply | 24 Vdc (18 – 30 Vdc), 15 Vdc on request |
| Current consumption Standard | Meter (GSM): max. 100 mA; Controller (GSC): max. 250 mA (GSC with valve type 8 max. 490mA) |
| Current consumption Profinet RT / EtherCAT | Meter (GSM): max. 125 mA; Controller (GSC): max. 340 mA (GSC with valve type 8 max. 560mA) |
| Operation pressure | 0.2 – 11 bar a (3 – 160 psia) / GSC with valve type 4.5 and 8 max. 8 bar a (120 psia) |
| Temperature (environment/gas) | 0 – 50°C (32 – 122°F) |
| Body Materials | Anodized aluminum, optional stainless steel electropolished |
| Seals | FKM, EPDM, optional FFKM |
| Pressure sensitivity | < 0.2% / bar of reading (typical N2) |
| Temperature sensitivity | 0.025% FS measuring range type per 1°C (<0.012% per 1°F) |
| Warm-up time | < 1 sec. for full accuracy |
| Integration & Installation | |
| Output signals analog | 0-20 mA, 4-20 mA, 0-5 V, 1-5 V, 0-10 V, 2-10 V |
| Output signals digital | RS-485; Modbus RTU (Slave); LabView-VIs available Option: Profibus DP-V0, DP-V1 / Profinet RT / EtherCAT |
| Process connection | G¼” (BSPP* female) up to 60 ln/min (64 SLPM) G½” (BSPP* female) up to 450 ln/min (480 SLPM) *British Standard Pipe Parallel |
| Inlet section | None required |
| Electrical connection | Sub D plug, 9 pole |
| Mounting orientation | Any position (consult manufacturer above 5 bar or vertical mounting) |
| Safety | |
| Test pressure | 16 bara (240 psia) |
| Leak rate | < 1 x 10-6 mbar l/s He |
| Ingress protection class | IP50 |
| EMC | EN 61326-1 |
A wide range of cables and power supply units for fast integration of the red-y smart mass flow meters and controllers is available:
The gas collection systems enable the easy integration of several digital flow meters and flow controllers into one combined system..
| Type/Connection | Seals in FKM | Seals in EPDM |
| G1/4″ to 6mm | Part-N° 328-1011 | Part-N° 328-1031 |
| G1/4″ to 1/4″ | Part-N° 328-1012 | Part-N° 328-1032 |
| G1/4″ to 12mm | Part-N° 328-1013 | Part-N° 328-1033 |
| G1/4″ to 1/2″ | Part-N° 328-1014 | Part-N° 328-1034 |
| G1/2″ to 12mm” | Part-N° 328-1006 | Part-N° 328-1026 |
| G1/2″ to 1/2″ | Part-N° 328-1007 | Part-N° 328-1027 |
| Type/Connection | Seals in EPDM |
| G 1/4″ to D 25 | 328-1421 |
| G 1/2″ to D 50.5 | 328-1424 |
| Type/Connection | Seals in FKM |
| G1/4″ / 1/4″ VCR | Part-N° 328-1190 |
| G1/2″ / 1/2″ VCR | Part-N° 328-1191 |
VCO® & VCR® are registered Trademarks of Swagelok
| Type/Connection | Seals in FKM | Seals in EPDM |
| G1/4″ / 1/4″ VCR | Part-N° 328-1192 | Part-N° 328-1193 |
VCO® & VCR® are registered Trademarks of Swagelok
| Type/Connection | Seals in NBR |
| G1/4″ to 6mm | Part-N° 328-1211 |
| G1/4″ to 8mm | Part-N° 328-1212 |
| G1/4″ to 10mm | Part-N° 328-1213 |
| G1/2″ to 8mm | Part-N° 328-1216 |
| G1/2″ to 12mm | Part-N° 328-1214 |
| G1/2″ to 14mm | Part-N° 328-1215 |
 | red-y smart series Cable Accessories | Accessories Datasheets |  |  |  |
| red-y smart series Product Information | Product Datasheets | | | |
| Software get red-y Product Information | Product Datasheets | | | |
| red-y smart & industrial series Digital Communication Overview | Product Datasheets | | | |
| red-y smart series Display Option | Product Datasheets | | | |
| red-y smart series Gas Block Systems | Accessories Datasheets | | | |
| Tri-Clamp Fittings | Accessories Datasheets | | | |
 | Software get red-y V5.7.1.3 | Software | | | |
| red-y smart series Operating Instructions SN>110000 | Operating Instructions | | | |
| Software get red-y Operating Instructions | Operating Instructions | | | |
| red-y smart series Operating Instructions digital Communication | Operating Instructions | | | |
| red-y smart series Operating Instructions Labview | Operating Instructions | | | |
| red-y smart series Declaration of Conformity CE | Certificates/Statements | | | |
| red-y smart series Declaration of Conformity UKCA | Certificates/Statements | | | |
| red-y smart series Quick Start Guide | Operating Instructions | | | |
| LabVIEW VIs (LabVIEW 2010 and higher) | Software | | | |
| LabVIEW VIs (LabVIEW 2011 and higher) | Software | | | |
| LabVIEW VIs (LabVIEW 6 and higher) | Software | | | |
| LabVIEW VIs (LabVIEW 8.6 and higher) | Software | | | |
| red-y smart & industrial series Operating Instructions EtherCAT | Operating Instructions | | ||
| red-y smart & industrial series Tutorial EtherCAT TwinCat | Operating Instructions | | ||
| red-y smart & industrial series Operating Instructions Profinet | Operating Instructions | | ||
| red-y smart & industrial series Tutorial Profinet TwinCat | Operating Instructions | | ||
What is the impact of a different reference temperature?
The reference pressure in all units is designed for 1013.25 mbar. If you want to calculate the difference between 0 °C and 20 °C, e.g., the formula is as follows:
(flow at 0°C /273.15)*293.15
(Law of Boyle/Gay-Lussac)
Example: 100 ln/273.15*293.15 = 107,32 ls (=7.3%) This corresponds to a correction of 0.366 % per degree Celsius
How significant is the impact if the operating conditions change (pressure and temperature)?
The thermal mass flow meters and controllers directly measure the number of gas molecules (=mass), which flows past the sensor. The thermal flow measurement principle is therefore insensitive to changes in pressure and temperature. Vögtlin calibrates each unit on two temperatures and a temperature sensor in the gas stream compensates any minor temperature error due to temperature effects in the electronics. Due to this compensation there are almost no measurable temperature effects in the range of between 0…50 °C.
What reference conditions (pressure and temperature) are the devices specified for?
Unlike liquids, gases can be compressed. The volume changes when the temperature and/or the pressure change. When specifying a gas volume, the reference temperature and the reference pressure must thus also always be specified. The flow unit is than referred to as normalized (f.i. ln/min) or standardized flow (f.i. ls/min)
When we refer to “Normal” flow we in general use:
Temperature Tn = 273,15 K, corresponds to 0 °C
Pressure Pn = 1013,25 mbar abs
When we refer to “Standard” flow we in general use:
Temperature Tn = 293,15 K, corresponds to 20 °C
Pressure Pn = 1013,25 mbar abs
See also: http://en.wikipedia.org/wiki/standard conditions
Please note: Not everyone understands standard conditions in the same way. In the case of reference pressure, everyone agrees, but in the case of reference temperature, there are differences:
To avoid misunderstandings, the reference conditions are specified clearly in our correspondence.
On request, we also deliver the devices with another reference temperature.
How can the devices be controlled?
The measuring and regulating parameters of the red-y smart series and red-y industrial series can be read out or controlled in an analog, manual and digital manner.
What is required to let the devices communicate to a PC?
Vögtlin offers a wide range of accessories, so that the devices can be operated directly via a PC with very little effort. In detail:
» Cable accessories for the red-y smart series
The free software get red-y offers a wide range of possibilities in context with the digital communication:
In addition, the following functions can optionally be unlocked:
Measuring range too large/small: Can the full scale of the device be adapted on site?
The mass flow meters and controllers of the red-y smart series and red-y industrial series have a very large dynamic range and can be converted to a certain extent on site.
A measuring device can be reprogrammed with the help of our service department by means of the get-red-y software. You will receive a password (valid for one day) for enabling this advanced function. Please contact our service department for more information.
Can the devices also be used in low pressure?
On principle, it is possible to utilize our thermal mass flow meters and controllers in the low pressure range. The sensor allows for an accurate flow measurement down to 100 mbar abs (we never verified lower pressures).
In the case of the flow regulators, a the low pressure is most of the time downstream of the control valve. The valves are vacuum-tight. The following must nonetheless be taken into consideration:
What information are required for selecting & sizing the mass flow meters & controllers?
Always provide a description of your application, why and how you want to use the units in your process.
At the very minimum we need the following information:
Does the mounting position need to be considered?
Basically, the red-y for gasflow mass flow meters and mass flow controllers can be installed in any position. At higher pressures and with dense gases such as krypton, a slight zero-point drift may occur. We therefore recommend using the devices horizontally wherever possible.
For the red-y smart pressure controllers with a small measuring range, the mounting position must be known. The dead weight of the pressure measuring cell can cause a zero point drift.
Does a massflow unit need a warm up time?
No, all red-y for gasflow devices are ready for immediate operation.
What is the impact of the moisture of the gas?
Moist gas of up to approx. 80 % rh has only a slight impact on the measuring accuracy. However, make sure that no condensation can take place in the measuring device. The condensation could settle on the sensor which could lead to inaccurate measurements. In the event that a measuring device has come into contact with condensation, it can for the most part be rinsed with a dry gas, such as N2. See also the remarks in the operating instructions.
What device parameters can be changed on site?
The device parameters will be configured in the factory prior to delivery according to the data provided by you.
The following parameters can be set changed with the help of the get-red-y software:
Do I have to place a filter in the gas line to the flow meter/controller?
If you use gas from a bottle which is clean and dry, there is, in general no need for a filter.
However, there is a risk during start-up of the devices, because dirt particles could be present in the line. It is recommended to install a bypass system, so that the line can be rinsed or can be exposed in response to possible repairs.
In the event that ambient or compressed air is used, the installation of a moisture and dust filter is strongly recommended.
Troubleshooting: Is there a checklist?
Within the troubleshooting pages in the operating instructions, we have summarised error patterns, possible causes and possible measures. If you do not recognise your error pattern or the suggested action is unsuccessful, please contact your Sales Ppartner. If you return the appliance, please refer to the ‘Returns’ section in the operating instructions.
How can the devices be cleaned?
Depending on the type of contamination, the devices can be cleaned on site. You can find more information on this topic in the operating instructions.
Is there a possibility for a remote maintenance in the event of malfunction?
Yes. In some cases it is convenient when we can access the client’s PC directly and solve issues online. Please contact us!
You can download the free software TeamViewer for remote support here.
Periodic calibration: How often do the devices need to be calibrated?
In principle, the user himself determines the calibrating interval. People often use one per year or in case of very clean gas, one per 2 years. The following questions/points can be helpful:
We suggest the following calibration interval:
1. First inspection after one year
2. After several calibrations have been made in succession, the deviation of calibration to calibration must be evaluated. Based on these data, a decision can be made to adapt the calibrating intervals.
The following influences can lead to an increased deviation:
1. No stable flow, caused by pulsating pumps, e.g.
2. The gas condenses or carries along liquid or dusty particles (applications with ambient air are particularly susceptible to contaminations. A filter needs to be provided here).
3. The effective pressure deviates considerably from the calibrated pressure (+/- 0,2%/bar).
4. The gas/gas mixture is not consistent with the calibrated gas.
5. The aging of electronic components can cause changes, sometimes even improvements. Electrical changes appear as a result of aging or gradual burning of components, which impact the quality of the output signal.
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gas flow technology
St. Jakob-Strasse 84
4132 Muttenz, Switzerland
Vögtlin Instruments GmbH
is a company of TASi Measurement
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