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.

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