DCP007 Photometer
 
       
 
  • Overview
  • How it works
  • Measuring Principle


In-line liquid and gas colour and concentration measurement - Kemtrak DCP007 industrial fiber optic UV-VIS-NIR process photometer

Main features:

  • 350 - 1050 nm dual-wavelength detection*
  • Long life LED light source
  • Simple & robust flowcell design using fibre optics - no electricity or heat near the sample
  • Easy to operate - four push buttons, user-friendly menu and alphanumeric display
  • Two alarms (high/low) and system fault monitoring
  • Cleaning sequence control (relay output)
  • PID Controller (pulse width modulated relay or
    4-20 mA analogue output)
  • Analogue output (0-20/4-20 mA)
  • Data & system event logger for quality control
  • PC downloading software (Windows 2000, XP & Vista)
  • Supply voltage 110/240 VAC
  • IP65 protection
  • Overall dimensions:220 x 120 x 100 mm (LxWxD)

* wavelengths must be factory installed

 


DCP007
Industrial Photometer

The Kemtrak DCP007 is an advanced dual wavelength photometer designed to accurately measure the color or concentration of light absorbing liquids and gasses from 350 to 1050 nm (UV-VIS-NIR).

A primary "absorbing" wavelength measures changes in the process medium, while a second reference wavelength that is not absorbed by the process medium compensates for turbidity and/or fouling of the optical windows. A reference detector is also used to compensate for changes in the primary light brought about by aging or ambient temperature changes. The resulting measurements are very accurate with low drift and long-term calibration stability.

Optic fibers are utilized to pipe the light from within the DCP007 enclosure to the sampling point and back. This is a major benefit as all the electricity is kept within the analyzer enclosure permitting safe operation in even the most hazardous of environments. An additional benefit is that the light source is "cold" and does not affect the sample.

Optic fibres can be ordered in lengths up to 50m and are well suited for harsh industrial environments. Our standard fibers have a silicone-coated steel jacketing and can withstand temperatures up to 200 °C. A range of flow-cell manifolds are also available dependent upon the process and application.

In-line liquid and gas colour, concentration (UV-VIS-NIR) & turbidity analyser - Robust industrial DIN Flange, TriClamp, ATEX, Optic fiber

Sensor flanges - DIN Flange DN25, ISO DN25 TriClamp & ISO DN50 TriClamp

In-line liquid and gas colour and concentration measurement - Kemtrak DCP007 industrial fiber optic UV-VIS-NIR process photometer - CE Compliant CE Compliant
In-line liquid and gas colour and concentration measurement - Kemtrak DCP007 industrial fiber optic UV-VIS-NIR process photometer - ISO 9001 Quality Certificate Quality Certificate
Development, production and
testing to ISO 9001.
In-line liquid and gas colour and concentration measurement - Kemtrak DCP007 industrial fiber optic UV-VIS-NIR process photometer - ATEX Certified explosion protection ATEX Certified
Explosion protection available.
 

 

The Kemtrak DCP007 color & concentration analyzer consists of three components:

  1. Control Unit. The control unit contains all electronics including light source and detectors.
  2. Flow Cell. In-line (flow through) measurement cell.
  3. Fibre Optics. Industrial grade fibre optic assembly connects the control unit to the flow-cell.

 

The configuration shown here is a 316 stainless steel DN25 DIN Flange flow cell with stainless steel fully interlocked fibre optic assembly. Both flowcell and fibres can withstand 200°C

In-line liquid and gas colour, concentration (UV-VIS-NIR) and turbidity measurement - Kemtrak industrial process photometers.
   

The Kemtrak DCP007 photometer measures at two wavelengths. A primary "absorbing" wavelength is used to measure the substance being monitored while a "non absorbing" reference wavelength is used to compensate for turbidity, air bubbles and/or fouling.

Kemtrak industrial UV-VIS-NIR process photometer dual wavelength detection

Fiber optics are used to shine a precisely focused light beam through the process medium and back to a silicon photo-detector. A second photo-detector is used directly on the lamps to compensate for temperature effects and aging. The resulting measurements are very accurate with low drift and long-term calibration stability.

The attenuation of the transmitted light beam caused by light absorbing substances in the process medium is mathematically described by the Beer-Lambert law.

Applying the Beer-Lambert law (below), the concentration of the sample can be calculated.

Kemtrak industrial process photometers - Beers law

A = ε l c
 
where:
   
A
=
absorbance (= - log transmittance)
   
ε
=
molar absorptivity coefficient
   
l
=
optical path length
   
c
=
concentration of absorbing species

 

The Kemtrak DCP007 photometer is ideally suited for industrial environments where simplicity, stability and zero maintenance is vital.

 
     
  kemtrak ab | Box 2940 | SE-187 29 Täby | Stockholm | Sweden
tel: + 46 (705) 729300 | http://www.kemtrak.com/ | info@kemtrak.com