DTF16 Nephelometric Turbidity Sensor by optek

DTF16 Turbidity Meter viewed sideways looking through the pipeline

Cut away view of an inline turbidity meter DTF16

DTF16 Nephelometric Turbidity Sensor

High performance 3 channel nephelometric turbidity sensor

The DTF16 is a high 3 channel turbidity sensor for installation into pipelines, measuring turbidity at two angles of scattered light and a direct reference channel in various liquid flow streams.

Used For

High precision control of turbidity with compensation of colored products
Turbidity scales:
- CU (concentration units)
- ppm (DE)
- FTU
- NTU
- FAU
Turbidity based
- separator control
- beer filtration: quality and clarity at each step
- Pectin filtration
Turbidity measurement angles: 0°, 11°, 90°

Features

Benefits

Lifetime Stable Factory Calibration and Zero Point

Pre-calibrated process haze and turbidity measurement in EBC (ASBC) etc.

Optimized design for stray Light Suppression

No need for maintenance and recalibration

MEBAK Compliant – Broadband Wavelength Filtered Light Source

Meets specific regulations

High precision 3 angle measurement at 0°, 11 °, 90°

Discrete monitoring of larger particles and haze without signal interferences (11 + 90)

The optek DTF16 is an advanced function inline turbidity sensor for filtration control, release line turbidity and real-time quality control. It provides both an 11° Forward Scatter Measurement for highly sensitive detection of particles as well as a 90° side scatter measurement for standardized clarity / haze assessment. The stray light suppressed, triple beam - ratio measurement design compensates for product color as well as lamp aging. Factory zero and calibration stability ensure that multiple analyzers will always provide comparable results. Calibrations or zero point settings in the field are not necessary.

DTF16
Schematic	Lamp module Optics module Windows Sensor body Focusing optics Eight 11° detectors Detector 0° (Abs.) Optics module 90° 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 / NTU
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), 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	0 - 20 bar (0 - 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.