Turbidity Meter with a tri-clamp process connection

Industrial inline turbidity meter with a flange flow cell

High temperature, explosion proof turbidity meter with a flange process connection

Process turbidity meter rated for high temperature processes

TF16-N connected to a TFM flowcell for chemical resistance

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	Sensor Body Windows Focusing optics Detector 0° (Abs.) Eight 11° detectors Optics Module 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 (904 L), 1.4571 (SS 316Ti), 1.4462 (318 LN), Titanium 3.7035 (Grade 2), Hastelloy 2.4602 (C22), Plastic TFM™ 4215, ... others on request
Line size	1/8 in. to 6 in. (DN 6 to DN 150), ... others on request
Process connection	Flanges (ASME, DIN, EN, JIS), Clamps (TC, ISO, DIN), Female Threads (NPT, DIN), Sanitary Threads (DIN 11851), Tube Ends (DIN, ISO, OD),DIN 11864-1/-2/-3 (DIN, ISO, OD), Varivent (DIN, IPS, OD), ... others on request
Process pressure	0 - 100 bar (0 - 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 / Kalrez® 6230 (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.