TF16-N Turbidity Meter

High Performance Dual Channel Turbidity Meter

The TF16-N is a high precision turbidity meter for installation into pipelines measuring scattered and unscattered light at two independent angles in various liquid process streams. The ratio of scattered to un-scattered light can then be correlated.

Used For

  • Precise control of turbidity
  • Turbidity scales
    • CU (concentration units)
    • ppm (DE)
    • FTU (ISO)
    • FAU
    • EBC
  • Lauter tun / mash filter control
  • Turbidity measurement angle 0°, 11°
Features
Benefits

Inline turbidity meter with scattered-light detection at 11°
Outstanding sensitivity for very low turbidity

Lifetime Stable Factory Calibration and Zero Point
Pre-calibrated measurement ranges in EBC, FTU, ppm (DE).

8 x 11° scattered light detectors
Very high accuracy in detection of particles

Signal of reference channel at 0° can be transmitted to converter
Additional NIR absorbance measurement for monitoring high concentrations

The TF16-N is a high precision scattered light turbidity meter. Light scattered from particles (trace suspended solids, undissolved liquids or gas bubbles) in the medium is detected by eight hermetically sealed silicon photodiodes at an angle of 11°. At the same time, the direct light is detected by a reference photodiode. This unique dual channel design compensates for disturbances in the carrier medium. The sensor can be calibrated in ppm (DE), EBC or FTU and measures extremely low particle sizes and concentrations. Additionally, high particle concentrations can be monitored independent of color at the direct light detector.

TF16-N
Schematic
  1. Sensor Body
  2. Windows
  3. Focusing optics
  4. Detector 0° (Abs.)
  5. Eight 11° detectors
  6. Optics Module
  7. Lamp module
Measurement
Measurement principle

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

Measurement wavelength(s)

730 nm - 970 nm

Detector(s)

1 silicon photodiode (hermetically sealed) (Abs.)

8 silicon photodiodes (hermetically sealed) (11°)

Measuring range NIR-Absorption

any measuring range between

  • 0 - 0.05 to 5 CU
  • 0 - 50 to 8,000 ppm (DE)
  • 0 - 20 to 3,200 FTU
  • 0 - 5 to 800 EBC
Measuring range Scattered Light (11°)

any measuring range between

  • 0 - 0.5 to 500 ppm (DE)
  • 0 - 0.2 to 200 FTU
  • 0 - 0.05 to 50 EBC
  • (higher (i.e. 100 EBC) with reduced resolution, accuracy)
Optical path length

40 mm standard (10 - 60 mm with reduced accuracy)

Calibration

Abs.: CU (concentration units) application specific calibration basic calibration 11°: in ppm (DE) / FTU / EBC

Light source

special incandescent tungsten lamp 5.0 V DC, 970 mA

typical life span: 3 to 5 years (25,000 to 40,000 hours)

Resolution

< ± 0.05 % of respective measuring range

Repeatability

< ± 0.5 % of respective measuring range (scattered light < ± 0.3 %)

Linearity

< ± 1 % of respective measuring range (specific to application)

Protection

all optical parts have an IP rating of IP65 or higher

Sensor Body
Material

Stainless steel 1.4435 (SS 316L), 1.4539, 1.4571 (SS 316Ti), 1.4462, Titanium 3.7035 (Grade 2), Hastelloy 2.4602 (C22), Plastic TFM4215, PVC, ... others on request

Line size

1/8 in. to 6 in. (DN 6 to DN 150), ... others on request

Process connection

Flanges (ASME, DIN, JIS), Clamps (TC, ISO, DIN), Female Threads (NPT, DIN), Sanitary Threads (DIN 11851), Tube Ends (DIN, ISO, OD), Varivent, ... others on request

Process pressure

10 mbar to 100 bar (0.15 psi to 1450 psi) - higher on request depending on process connection, materials and design

Windows

1-Pyrex®, 2-Sapphire, 3-Sapphire Biotech

Window gaskets

Silicone (FDA), Viton® (FDA), EPDM (FDA / USP Class VI), Kalrez® 4079, ... others on request

Temperature Ratings
Process temperature

permanent: 0 - 120 °C ( 32 - 248 °F)

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

Process temperature
OPTION HT

permanent: -30 - 240 °C (-22 - 464 °F)

peak 15 min/day: -30 - 260 °C (-22 - 500 °F)

Process temperature
OPTION EX

permanent: -30 - 120 °C (-22 - 248 °F)

peak 15 min/day: -30 - 150 °C (-22 - 302 °F)

Process temperature
OPTION EX-HT

permanent: -30 - 240 °C (-22 - 464 °F)

peak 15 min/day: -30 - 260 °C (-22 - 500 °F)

Ambient temperature

permanent: 0 - 40 °C ( 32 - 104 °F)

operation: -30 - 40 °C (-22 - 104 °F) with options HT / EX / EX-HT

transport: -20 - 70 °C ( -4 - 158 °F)

Explosion Proof
Ex-proof

none

Ex-proof
OPTION EX (EN-D)

Sensor assembly in ex-proof version accor. ATEX (EN-D)

Ex-proof
OPTION EX (FM-D)

Sensor assembly in ex-proof version accor. FM (FM-D)

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.

Speed / Spare Parts

Lamp Module TF16

Lamp Module TF16

PN: 1426-3137-1401-03

Lamp Module TF16-EX

Lamp Module TF16-EX

PN: 1426-3138-1501-13

Installation Kit AF/TF

Installation Kit AF/TF

PN: 1201-3131-0004-00

O-Ring 10.10 x 1.60 Viton® (4)

O-Ring 10.10 x 1.60 Viton® (4)

PN: 1203-0004-0008-02

O-Ring 21.95 x 1.78 Viton® (FDA) (4)

O-Ring 21.95 x 1.78 Viton® (FDA) (4)

PN: 1203-0004-0015-02

O-Ring 25.12 x 1.78 Viton® (4)

O-Ring 25.12 x 1.78 Viton® (4)

PN: 1203-0004-0016-02

O-Ring 31.47 x 1.78 Viton® (4)

O-Ring 31.47 x 1.78 Viton® (4)

PN: 1203-0004-0018-02

O-Ring 50.52 x 1.78 Viton® (4)

O-Ring 50.52 x 1.78 Viton® (4)

PN: 1203-0004-0021-02

Product Variants

TF16-HT-N
TF16-HT-N
TF16-EX-N
TF16-EX-N

Process temperature OPTION HT

permanent: -30 - 240 °C (-22 - 464 °F)
peak 15 min/day: -30 - 260 °C (-22 - 500 °F)

Ex-proof OPTION EX (EN-D)

Sensor assembly in ex-proof version accor. ATEX (EN-D)

Ex-proof OPTION EX (FM-D)

Sensor assembly in ex-proof version accor. FM (FM-D)

C4000 - C8000 Product Information

Visit our documentation page to view a complete list of translated documents.