Worldwide Inline Process Control Solutions

DT9011 Laboratory Turbidimeter

Typical Industries:

  • Breweries
  • Distilleries
  • Wineries
  • Soft Drinks
  • Juice Processors
  • Bottled Water
  • Malt Beverages

Overview

DT9011 Haze Control Laboratory Turbidimeter

The optek DT9011 is a precise, laboratory-quality turbidimeter. The DT9011 features an advanced, triple beam scattered light optical design, measuring forward scatter (11°), side scatter (90°), and direct (0°) light. The DT9011 effectively measures a broad range of constituents that contribute to turbidity and fine haze in consumer products such as beer.

The powerful, easy to use DT9011 software allows the storage of data for up to 32 different products. This data includes product parameters, measuring ranges, bottle types and more.

The integrated data logger records all measurements and parameters. The data logger can store up to 25,000 data sets. The data tables can be displayed directly on the DT9011 or transferred to a PC using the optional PC-Transfer Software.

The sample is submerged in a water bath and sampled 250 times in one rotation resulting in advanced data analysis. Using this method, the effects of bottle color and shape, as well as scratches, seams and other imperfections will have no influence on the measurement. The circulating water bath and a drift-free, factory zero point ensure sensitivity and repeatable measurements.

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Technical Data

DT9011
Schematic
  1. Lamp module
  2. Optics module
  3. Windows
  4. Sample chamber with bath turntable
  5. Focusing optics
  6. Eight 11° detectors
  7. Detector 0° (Abs.)
  8. Optics module 90°
  9. Detector 90°
Measurement
Measurement principle

1- Channel Absorption of light and 2-Channel Scattering of light (11° and 90°)

Measurement wavelength(s)

590 nm - 1100 nm

Detector(s)

1 silicon photodiode (hermetically sealed) (Abs.)

1 silicon photodiode (hermetically sealed) (90°)

8 silicon photodiodes (hermetically sealed) (11°)

Measuring Range

Bottles

any measuring range between

  • 0 - 1 to 25 EBC (11° and 90°)
  • 0 - 4 to 100 FTU (11°)
  • 0 - 4 to 100 FTU / NTU (90°)

Cuvettes

any measuring range between

  • 0 - 1 to 100 EBC (11° and 90°)
  • 0 - 4 to 400 FTU (11°)
  • 0 - 4 to 400 FTU / NTU (90°)
Calibration

factory calibration (11° and 90°)

user calibration possible, at any time reversible to factory calibration

comparison between factory settings and user settings possible

Light source

special halogen lamp 5.0 V DC, 970 mA

typical life span: 1.5 to 3 years (12,500 to 25,000 hours)

Resolution

0 - 1 EBC to 0 - 4 FTU:

< ± 1 % of respective measuring range

0 - 100 EBC or 0 - 400 FTU:

< ± 0.05 % of respective measuring range

Repeatability

< ± 1.0 % in cuvette

Linearity

< ± 1.0 % in cuvette

Protection

table case front IP40

System
Material

housing:stainless steel 1.4301 (SS304)

dimensions:W 381 mm (15 in.) H 394 mm (15.5 in.) D 445 mm (17.5 in.)

measurement chamber:POM C

tubing:PA, PVC

fittings:stainles steel, brass

Water bath

overflow drain valve (flow regulation)

sensor for minimum water level

volume:600 ml (20 fl oz)

flow:5 to 15 l/h with circulation

Rotation system

standard

Display

LCD graphic display black on white (240 x 128 pixel), LED background illuminated

Operation

18-button keyboard

System clock

accuracy approx. 1 minute/month (battery life approx. 15 years)

LED

1 LED (green):power on

1 LED (red-flashing):system failure / lamp failure

2 LEDs (yellow):alarm I, II

Serial communication

RS232 bi directional interface on the back ( with software package optek PC-transfer)

upload /download of configuration, download of data logger content

Power supply

115 / 230 V AC, selectable (93.5 - 132 / 187 - 264 V AC, 47 - 64 Hz)

consider an external release device

power consumption:< 50 VA

Windows

borosilicate glass

Gaskets

buna, Viton®

Cuvettes

diameter:Ø 58.0 mm to Ø 72.5 mm (2.28 in to 2.85 in.)

wall thickness:minimum 2 mm (0.08 in.)

height:140 - 280 mm (5.5 - 11.0 in.)

Bottles

diameter:Ø 58.0 - 72.5 mm (2.28 - 2.85 in.)

height:140 - 280 mm (5.5 - 11.0 in.)

color:green, brown, clear

Bottle insert

adapter 61 mm (2.40 in.):bottles Ø 58.0 - 60.5 mm (2.28 - 2.38 in.)

adapter 64 mm (2.52 in.):bottles Ø 60.5 - 63.5 mm (2.38 - 2.50 in.)

adapter 67 mm (2.64 in.):bottles Ø 63.5 - 66.5 mm (2.50 - 2.62 in.)

adapter 70 mm (2.76 in.):bottles Ø 66.5 - 69.5 mm (2.62 - 2.74 in.)

without adapter:bottles Ø 69.5 - 72.5 mm (2.74 - 2.85 in.)

Temperature Ratings
Water bath remperature

10° C to 40 °C (50° F to 104 °F)

Ambient temperature

operation:0 - 40 °C (32 - 104 °F)

transport:-20 - 70 °C ( -4 - 158 °F)

Pressure and temperature ratings specified herein may be subject to limitations - see instruction manual. The appropriate choice of material for all wetted parts is the sole responsibility of the user. Data given are subject to changes without prior notice.

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