Precise measurement results through high-quality interference filters

Photometers measure nearly all disinfectants and the pH value based on the photometric principle. They are portable, compact and make safe, simple measurement possible.

The Photometers DT1B, DT2C, DT3B and DT4B are used, among other things, as a reference method for calibrating the electrochemical sensors for chlorine, chlorine dioxide, fluoride, chlorite, H₂O₂, bromine and ozone. They have been adapted to today's requirements and can be used in almost all areas of water analysis. High-quality interference filters and long-term stable LEDs are used as the light source in the high-precision optics. The entire measuring unit is maintenance-free. Precise and reproducible analysis results are achieved with minimum time and effort. The units are winning customers over with their excellent operating convenience, ergonomic design, compact dimensions and ease of use.

Your benefits

Portable and compact
Simple to operate with text support
Safe, simple measurement of chlorine, chlorine dioxide, fluoride, chlorite, H₂O₂, bromine, ozone, pH and trichloroisocyanuric acid
Can be calibrated
Memory function for the last measurements
Backlit display

Field of application

Swimming pools
Potable water
Process water

Technical Details

Measuring ranges of the DT1B:

0.05 ... 6.0 mg/l free chlorine (DPD1) + total chlorine (DPD1+3)
5 ... 200 mg/l free chlorine (high range)
0.1 … 13.0 mg/l bromine (DPD1)
0.05 … 11 mg/l chlorine dioxide (DPD1)
0.03 … 4.0 mg/l ozone (DPD4)
6.5 … 8.4 pH (phenol red)
1 … 80 mg/l cyanuric acid

Measuring ranges of the DT2C:

0.05 … 2.0 mg/l fluoride
0.05... 6.0 mg/l free chlorine and total chlorine
0.05 … 11.0 mg/l chlorine dioxide

Measuring ranges of the DT3B:

1 … 50 / 40 … 500 mg/l hydrogen peroxide (H₂O₂)

Measuring ranges of the DT4B:

0.03 … 2.5 mg/l chlorite
0.05 … 11 mg/l chlorine dioxide
0.05 … 6 mg/l chlorine

Measuring tolerance: depending on the measured value and measuring method

Battery: 4 x AA/LR6 batteries

Permissible ambient temperature range: 5…40 °C

Relative humidity: 30 ... 90% (non-condensing)

Degree of protection: IP 68

Housing material: ABS

Keypad: polycarbonate film

Dimensions: 190 x 110 x 55 mm (L x W x H)

Weight: 0.4 kg