Worldwide Inline Process Control Solutions

DTF16 Haze Control Process Turbidimeter

Typical Applications:

  • Filter control
  • Filter break-through
  • Filter backwash

Overview

DTF16 Haze Control Process Turbidimeter

The DTF16 is a precision turbidimeter featuring an advanced, triple-beam scattered light optical design. It precisely measures light at a forward angle of (11°) and side angle of (90°) with simultaneous light compensation.

The DTF16 effectively measures inline a broad range of particles that contribute to turbidity and fine haze while providing the Nephelometric results required by most QA/QC guidelines. The combination of precise scattering light optics and optimized sensor body geometry prevents external or internal stray light from affecting the measurement.

Variable disturbances, such as sample color, color changes and lamp variations have no influence on the measured value.

optek DTF16 Process Turbidimeter

The sensor body is constructed of sanitary stainless steel. The DTF16 O-Rings are made from FDA-approved EPDM. The optical windows are made from a single crystal sapphire providing superior resistance to abrasive and corrosive media. Armatures are available in nominal sizes of DN50-DN125. Weld ends allow adaption to any pipe/tube standard.

The DTF16 features a drift-free factory zero point, eliminating the need for calibration or zero adjustments.

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Technical Data

DTF16
Schematic
  1. Lamp module
  2. Optics module
  3. Windows
  4. Sensor body
  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 NIR-Absorption

any measuring range between

  • 0 - 0.1 to 500 EBC
  • 0 - 0.4 to 2,000 FTU
Measuring range Scattered Light (11°)

any measuring range between

  • 0 - 0.1 to 25 EBC
  • 0 - 0.4 to 100 FTU
Measuring range Scattered Light (90°)

any measuring range between

  • 0 - 0.1 to 25 EBC
  • 0 - 0.4 to 100 FTU
Optical path length

80 mm standard

Calibration

factory calibration (11° and 90°)

0 - 25 EBC / 0 - 100 FTU

in standard sensor body (OPL = 80 mm)

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

< ± 0.05 % of respective measuring range

Repeatability

< ± 0.3 % of respective measuring range

Linearity

< ± 0.5 % of respective measuring range

(with standard solution, specific to application)

Protection

all optical parts have an IP rating of IP65 or higher

Sensor Body
Material

Stainless steel 1.4435 (SS 316L), Plastic TFM4215, others on request

Line size

2 in. to 5 in. (DN 50 to DN 125), others on request

Process connection

butt weld tube ends:DIN 11850, ISO 1127, IPS (Schedule 5), OD (BS 4825-1), others on request (e.g. Flange (DIN, ASME), Tri-Clamp)

Process pressure

10 mbar to 20 bar (0.15 psi to 280 psi)

Windows

3-Sapphire Biotech (type 3A)

Window gaskets

EPDM (FDA / USP Class VI), others on request

Temperature Ratings
Process temperature

permanent: 0 - 120 °C ( 32 - 248 °F)

peak 15 min/day: 0 - 150 °C ( 32 - 302 °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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