EXspect 271 NIR backscattering sensor in compact design

EXspect 271 NIR backscattering sensor in compact design

  • Compact design with integrated amplifier and touch display
  • %-turbidity or cusomer defined unit
  • Durable sapphire lens
  • Hygienic Design, CIP/SIP-capable
  • LED light source guarantees a durable and stable signal
  • Easy parameterization via display or software EXpert


EXspect 271 is a high precisely compact NIR turbidity sensor monitoring production processes in the food industry, e.g. in dairies, as well as in many ranges of process and chemical applications and waste water. The robust and compact structure in the stainless steel housing and the wear-free sapphire lens makes the EXspect 271 a reliable back scattering sensor with integrated transmitter. The turbidity value can be displayed in % or in a freely definable customer-specific unit directly in the display and output via the standard interface 4…20 mA. Two alarm limits can be programmed.


Measuring range max.0-100 %
Resolution0,1 %
Accuracy± 1,5 % from measurement value
Reproducibility≤ 1 % from final value
Wavelength850 nm
Light sourceLED
MaterialStainless steel 1.4435 (316L)
Surfacee-polished Ra <0,37 μm
Supply voltage24 V DC
ContactNO or NC configurable 150 mA
Input contactzeroing
Process connectionThread G1/2″
Process temperature0 … 90 °C, 141 °C max. 2 hours (SIP cycle)
Process pressuremax. 16 bar (235 psi)
Electrical connectionM12 connector 5-pin or 8-pin (digital parameterizable)
Cable length2 m / 5 m
Interfaces4 … 20 mA with add. switching contact
ParameterizationSoftware EXpert
Protection classIP69


  • Phase separation
  • Filter observation
  • Concentration measurement independent from color
  • Monitoring product changes
  • Yeast management

EXspect 271 NIR backscattering sensor in compact design

Parshvi Technology