NIR turbidity sensor EXspect 271

compact4-20mA

Product overview
EXspect 271 is a compact, high-accuracy NIR backscatter turbidity sensor for monitoring production processes in the food industry (e.g., dairies) and other process applications with medium to high turbidity. Stainless steel housing with wear-free sapphire lens and integrated transmitter/amplifier. Turbidity displayed in % or a customer-defined unit; standard 4...20 mA output and two programmable alarm limits.

Your advantages

• Compact design with integrated amplifier
• Display in % or customer-specific unit
• Durable sapphire lens
• Hygienic design, CIP/SIP-capable
• LED light source for stable signal
• Parameterization via display or EXpert software
• EHEDG / 3-A versions available

Configuration options

• Measuring range: 0...100 % turbidity
• Wetted material: Stainless steel 1.4435 / 316L
• Sealing: Without elastomer sealing
• Process connections: Thread G1/2" (metallic sealing); Varivent N DN40-125 (EHEDG/3A); Tri-Clamp 1.5" (EHEDG/3A); Tri-Clamp 2" (EHEDG/3A)
• Interfaces: Analogue 4...20 mA (M12 5-pin); Analogue 4...20 mA + digital (M12 8-pin)
• Display: Integrated display

Specifications
Measuring range max.: 0-100 %turb
Resolution: 0.1 %
Accuracy: ±1.5 % of measured value
Reproducibility: ≤1 % of final value
Wavelength: 850 nm
Light source: LED
Material: Stainless steel 1.4435 (316L)
Surface: Ra <0.37 μm
Lens: Sapphire
Supply voltage: 24 V DC
Switch contact: NO or NC configurable 150 mA
Input contact: Zeroing
Process connection: Thread G1/2"
Process temperature: -10...100 °C, 141 °C max. 2 hours (SIP cycle)
Process pressure: max. 20 bar (290 psi)
Electrical connection: M12 connector 5-pin or 8-pin (digital configurable)
Interfaces: 0/4...20 mA
Parameterization: EXpert software
Protection class: IP69

Applications

• Phase separation
• Color-independent concentration measurement
• Monitoring product changes
• Yeast management

Technical characteristics / specifications

• Measuring range max.: 0-100 % turbidity
• Resolution: 0.1 %
• Accuracy: ±1.5 % of measured value
• Reproducibility: ≤1 % of final value
• Wavelength: 850 nm
• Light source: LED
• Material: Stainless steel 1.4435 (316L)
• Lens: Sapphire
• Supply voltage: 24 V DC
• Switch contact: NO/NC configurable (150 mA)
• Process temperature: -10...100 °C (141 °C max. 2 h SIP)
• Process pressure: max. 20 bar (290 psi)
• Electrical connection: M12 connector (5-pin or 8-pin)
• Interface: 0/4...20 mA
• Parameterization: EXpert software
• Protection class: IP69