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Online Polarimeter

Online Polarimeter
Online Polarimeter
Product Code : 15
Product Description

The Propol process polarimeter is used as a polarimetric online or inline sensor for concentration measurement in the production of chiral compounds. Its measuring method compensates the Optical Rotation by means of the Faraday effect. This means it has no moving parts and is therefore maintenance-free. Typical applications are the synthesis or extraction of biochemicals, separation of racemates, liquid sugar production and waste water control in sugar refineries.

Key Features

Application-oriented design

  • Measuring unit and control unit connected by a cable of 100 m length
  • Robust cast aluminum housing for harsh environments
  • Waterproof, protection class IP 65
  • Can be modified for explosion proof-status (optional)
  • No mechanically moved parts and therefore maintenance-free
  • LED light source with an average life of 100 000 h

Adaptable and secure

  • Measuring ranges for Optical Rotation, %Sucrose, %Glucose
  • Three user-configurable concentration ranges
  • Facility for automatic temperature compensation
  • Comparator functions with two programmable setpoints
  • Ready for every task with 20 mA analog output and RS-232 interface

Typical applications

  • Synthesis and extraction of chiral biochemicals such as antibiotics, amino acids, hormones, vitamins, flavors and fragrances
  • Separation of racemates, molasses separation, liquid sugar production
  • Waste water control in sugar refineries

Technical Specifications

Measuring scales

  • Optical Rotation
  • % Sucrose
  • % Glucose
  • % Concentration (3 user-configurable ranges)

Measuring range

Optical Rotation

+ 6.0o

% Sucrose

Range depending on the optical cell length
e.g. 0 - 65 % for 10 mm

% Glucose

Range depending on the optical cell length
e.g. 0 - 65 % for 10 mm

% Concentration 1 - 3

Each scaleable with a standard solution of known concentration, by quartz standards, by linear factor input, by polynomial coefficients input for non-linear scaling

Temperature

0 to 99.9 oC (requires Pt100 sensor)

% Sucrose

Predefined

% Glucose

Predefined

% Concentration 1 - 3

Free definable

Resolution

Optical Rotation

0.001o

Concentration scales

0.001%, 0.01% or 0.1%

Temperature

0.1 oC

Accuracy

Optical Rotation

+ 0.001o

Concentration scales

+ 0.001%

Temperature

+ 0.1 oC

Interface

RS-232C

For communication with a computer or terminal

Analog output

  • Configurable for 0 - 20 mA, 4 - 20 mA or 12±8mA
  • The begin and end can be assigned concentrations
  • max. load 500 Ω

Limit switches (comparator functions)

  • Two independent setpoints. Concentrations and dead band menu-selectable.
  • Solid state relay output
  • max. load 240 VAC, 0.5 A

Safeguard monitor

Relay output to warn about low light, overrange or device error conditions. Solid state relay output, max. load. 240 VAC, 0.5 A

Mechanical data

Measuring unit

  • Dimensions: 550 mm x 130 mm x 190 mm (LxWxH)
  • Protection class: IP 65
  • Weight: 16 kg

Control unit
(19" wall cabinet)

  • Dimensions: 600 mm x 490 mm x 215 mm (LxWxH)
  • Protection class: IP 55
  • Weight: 23 kg

Interconnecting cable

Lengths to be specified: 2.5to100 m

Additional information

Optical wavelength

Standard: 589 nm, optional 546 nm

Light source

LED, average life time 100 000 h

Sensitivity

OD 3.0 (Optical Density)

Integration time and measuring rate

20 s-1

Mains supply

Self-adapting to any mains from 100 - 240 VAC +10 % / -15 %, 47 - 63 Hz


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