Photometers (Monofunction)
In PCE-Instruments, you will find photometers to measure many parameters of  water in industry, laboratories, field, gardening and in the environmental sector. On our photometers website, we have 15 digital monofunctional photometers for the analysis of water (spare parts, reagents, and technical specifications included in the delivery). If needed, we can also offer other equipment for other water parameters. The control of water quality with solid devices is increasingly important, just as checking the quality of drinking water, industrial water and other wastewater. Take advantage of the properties of these photometers to measure various parameters such as chlorine, water hardness, nitrates, etc. If you have questions regarding the photometers, you can call us at the following telephone number telephone number: UK customers +44(0) 23 809 870 30 / US customers (561) 320-9162. Our technicians and engineers will be happy to advise you on these monofunctional photometers and of course on the rest of the products on our website (measuring instruments).

Here you see photometers from these companies:

The technical specifications of the Photometers can be found on the following links:

- HI 967xx series Photometers - chlorine
  (Photometers to measure normal chlorine: low / medium / high)

- HI 96728 photometers - nitrate  
  (Photometers for nitrate up to 133 mg / l or 30 mg / l of nitrogen)

- HI 967xx series Photometers - hardness of water
  (Photometers for Mg, Ca and total hardness in mg /l or ° D)

- HI 7xx series Photometers - chlorine 
  (Photometers for measuring free chlorine and total chlorine, for example the measurement of chlorine in pools)

- HI 713 Photometers - phosphate 
  (Photometers for the measurement of phosphate, for example measurement in aquariums) 

- HI 721 Photometers - iron
  (Photometers for the measurement of iron, such as measuring groundwater or wheel water)

- PCE-TUM 20 Photometers - turbidity
  (Photometers, portable turbidy meter, range automatic change, big screen)

- HI 83214 Photometers - CSD 
  (Photometers to measure chemical oxygen demand)

You can also visit our multifunctional photometers webpage 

The measuring principle is very simple photometers. The combination of reactive components of water and produces a characteristic color. Photometers send light through the sample with a given wavelength. A photocell detects the intensity of the irradiated sample and compares the result with the output. Absorbed radiation is transmitted and calculated concentration. Below is an outline about it.

Photometers create the  light needed by means of a diode with energy savings. These devices are easy to use and can be offered with a handheld variant. Photometers measure the intensity (I) of the light beam directed through the filled cuvette by means of  the photocell. The measurement is compared with the last known output current (Io). The portion of light striking the photocell is converted into an electric current and it is driven through a digital analog transformer of the measurement of electronics. Here you determine the amount of absorbed radiation and the concentration. Lambert law - Beer 'sche establishes a mathematical relationship between extinction E and the concentration c of water content: A = log Io / I. Absorption is defined as follows:
A Lambda cd = € (€ Lambda = extinction coefficient, c = molar concentration of the substance, d = thickness of the cu-beta). The extinction measured with photometers E is proportional to the concentration of water content. The extinction depends only on the concentration of a given factor and a constant thickness of the cuvette. The law has unlimited validity, but it starts with a light single wavelength, known as the monochromatic light. If the selected wavelength is within the visible range (400 ... 800 nm), the measurement with the photometer should take place in a dark place for the photometer to determine the correct amount of incident light and not be influenced by the sun. Before starting a series of measurements, you must perform a reset by means of a test strip. To do this, you should fill the bucket with the sample test to analyse and adjust the setting by pressing the "ZERO"  in the photometer.

If you wish to view or print a selection of photometers from our catalogue, click on the PDF symbol.