TUM-20 Turbidimeter

TUM-20 Turbidimeter

The turbidity meter is a portable meter with a large display that meets all requirements for on-site turbidity measurement. The measuring range of the turbidity meter is from 0 to 1000 NTU and is divided into two automatic ranges for increased accuracy.

It uses an LED light source with a wavelength of 830 nm of the electromagnetic spectrum that is invisible to the human eye. Since the measurement is made in the visible light range, it is not very important whether the test is colored.

Calibration standards in 0 and 100 NTU. The turbidimeter includes the calibration standards in the delivery contents. The turbidimeter complies with all standards according to EN 27027, ISO 7027 and ISO 17381.

Measurement principles and units

The turbidimeter integrates an infrared LED as a light source operating at a wavelength of 850 nm. A photodiode, positioned at an angle of 90° to the measuring light beam, receives the reflected light from the particles in the measuring solution (scattered light or nephelometric measuring method for the lower measuring range) For the upper measuring range there is another photodiode on the opposite side. (The measurement is carried out by the transmitted light method.) The meter thus determines the turbidity in NTU (FTU). Thanks to the use of an infrared LED it is possible to perform measurements in colored liquids, e.g. red wine.

The turbidity meter displays the measurement result in the unit NTU (Nephelometric Turbidity Unit). This unit is specified in the ISO standard. NTU is identical to FTU (Formazine Turbidity Unit). In practice, two other units of measurement are used to measure turbidity: JTU and SiO2. JTU (Jackson Turbidity Unit) corresponds to 19 times the NTU, while Silica Unit corresponds to 7.5 times the NTU

Features

Specifications

- Measuring method according to ISO 7027 and ISO 17381
- Large 41 x 34 mm LCD display
- Real time
- High precision
- Infrared measurement method
- Transmitted and diffused lux measurement
- Data-Hold
- Memory of maximum and minimum values
- Calibration in 0 NTU and 100 NTU.
- Compact, shock-resistant housing
- Automatic shutdown (after 5 min).

Includes

1 x Turbidimeter PCE-TUM 20
1 x Calibration standard 0 NTU
1 x Calibration standard 100 NTU
2 x Measuring cuvettes
1 x Cleaning solution
1 x Cleaning cloth
6 x 1.5 V AAA batteries
1 x Briefcase
1 x Instructions for use

Note: Measuring method according to ISO 7027 and ISO 17381

Manual Video

How to calibrate your TUM 20