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Rough Environment Mass Flow Meters & Mass Flow Controllers for Gases

Red-y Industrial Series

Mass Flow Meters & Controllers with IP67 & Ex Protection

Reliable technology and industry standard interfaces for rough environments: Our tried and tested thermal mass flow meters and controllers for gases now available as IP67 / NEMA 6 version.

Accurate Measurement
The mass flow devices offer high accuracy and a wide dynamic range with the 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)

Analog & Digital

The red-y industrial mass flow meters and controllers make use of the latest MEMS technology and have a digital (Modbus RTU) and analog interface as standard.


IP67 / NEMA 6 Protection

The instruments offer IP67 / NEMA 6 protection against solid particles and water.


ATEX Certification

red-y industrial devices come along with ATEX certification (Category 3 / Zone 2 & 22)


Multiple Connections

The red-y industrial series is available with different connection types: Cable gland with compression fitting or optional M12 plug on top


Setup Tool get red-y

Efficient device setup with the free get red-y software:

  • Service tool for remote maintenance.
  • Switch gas type.
  • Switch measurement units.
  • Adjust control parameters.


Multigas (option)
One meter or controller can be used for up to 10 different gases or gas mixtures.

The instruments are available with Profibus interface: DP-V0 & DP-V1 protocols.


3-Year Warranty

High-quality components ensure long and trouble-free operation (does not apply to calibration, options and accessories).


Types & Options Red-y Industrial Series

Red-y Industrial Meter GIM
Thermal Mass Flow Meter with IP67/NEMA 6 protection
Flow up to 450 ln/min (480 SLPM)
Body size ¼” and ½”
Stainless steel 316L version
Red-y Industrial Controller GIC
Thermal Mass Flow Controller with IP67/NEMA 6 protection
Flow up to 450 ln/min (480 SLPM)
Body size ¼” and ½”
Stainless steel 316L version
Red-y Industrial Controller GIE
Thermal Mass Flow Controller with external valve and IP67/NEMA 6 protection
Flow up to 450 ln/min (480 SLPM)
Body size ¼” and ½”
Stainless steel 316L version
Customized OEM Solutions:
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.

Technical Specifications


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)
The economic solution
Accuracy: ± 1.0% of full scale*
Turndown ratio: 1: 50
With highest accuracy and turndown ratio
(available for GIM < 200 ln/min (200 SLPM) /
GIC < 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
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: 50 ms; Controller: 150 ms

± 0.2% of full scale
Longterm stability
< 1% of measured value / year
Power supply
24 Vdc (18 – 30 Vdc), 15 Vdc on request
Current consumption

Meter: max. 100 mA; Controller: max. 250 mA (except GIE)

Operation pressure
0.2 – 11 bara (3 – 160 psia) / GIC with valve type 4.5 and 8: max. 8 bara (120 psia)
Temperature (environment/gas)
0 – 50°C (32 – 122°F)
Pressure sensitivity.
<0.2% / bar (<0.014% / psi) 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

Body Materials

Stainless steel 316L (see operating instructions for wetted parts)

Electronic Housing

EPDM (FDA), optional FKM

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
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
Cable gland with compression fitting / Option: M12 plug (DIN-standard)
(both connection IP67 protected)
Mounting orientation
All orientations are possible. We recommend horizontal mounting.
Please contact the manufacturer for further information.
Test pressure.

16 bara (240 psia)

Leak rate.

< 1 x 10-6 mbar l/s He

Environmental protection
IP67 (conforms to NEMA 6)
EN 61326-1
ATEX Certification
II 3G nA IIC T4 Gc (Category 3 / Zone 2)
II 3D Ex tc IIIC T100°C Dc (Category 3 / Zone 22)
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