PRECISION GAS FLOW METERS & GAS FLOW CONTROLLERS

Digital Massflow Meters for Gases red-y compact series:
Comparison of device generations 1 & 2

Digital Massflow Meters red-y compact series ‚Äď Comparison of product version

In 2015, Vögtlin Instruments AG launched a completely redesigned version of the digital massflow meters red-y compact series with touch technology and AA battery power.
With this new generation, we are leading our proven and well-known massflow instruments in a future-oriented device concept with enhanced features and optimized operation.

See below a comparison of the two massflow device generations:

red-y compact 1 series red-y compact 2 series
red-y compact series digital massflow meters device generation I red-y compact series digital massflow meters device generation II
Identification SN < 299999 / Produced from 2000 to 2015 SN > 300000 / Produced as of 2015
Sensor Classical CMOS sensor Latest CMOS sensor generation
Processor 8 bit microcontroller 32 bit microcontroller
Display 6-digit LC-display
LC-Display of digital massflow meters red-y compact series I
Dot-matrix touch display (128√ó64 px)
Touch display of digital massflow meters red-y compact series II
Backlight Not available Yes, with external power supply (24 Vdc or Micro-USB)
Media Dry, non-aggressive/non-corrosive gases Dry, non-aggressive/non-corrosive gases
Measuring ranges From 1 mln/min up to 450 ln/min (air) From 1 mln/min up to 450 ln/min (air)
Gas/calibration 1 gas/calibration Up to 3 gases/calibrations
Measuring units/scale Factory set Wide choice of freely selectable flow units
Accuracy Eco: ¬Ī 2.0% of full scale
Special: ¬Ī 1.0% of full scale
Eco: ¬Ī 2.0% of full scale
Special: ¬Ī 1.0% of full scale
Turndown ratio 1 : 50 Eco: 1 : 50
Special: 1 : 100
Manual control valve Available for type GCR & GCA Available for type GCR & GCA
Power supply Lithium battery or +12…30 Vdc Standard AA battery or +12…30 Vdc
or Micro-USB (DIN 62684)
Battery lifetime 12 Р18 months (with constant flow) Depending on the selected Power Safe Mode
approx. 300 operating hours
up to 6 months with non-continuous operation
NOTE: For consumption measurement, we recommend external power supply (24 Vdc )
Password protection Not available Password protected menu available
Firmware update Not available Firmware updates via USB interface
Factory settings Not resettable Resettable via menu
Sampling interval of display 100 ms with external power 24 Vdc
500 ms with battery power 
40 ms with external power (USB or 24 Vdc)
500 ms with battery power
Material Grundkörper Anodized aluminium or
stainless steel 1.4305 (303)
Anodized aluminium or
stainless steel
 1.4404 (316-L)
Seals FKM or EPDM FKM or EPDM
Dimensions See datasheet Identical dimensions as red-y compact series 1
See datasheet
Datenblatt red-y compact 1 series datasheet PDF red-y compact 2 series datasheet PDF