ColorPlus 2 O3 Water and Gas

Measuring Ozone O3 in Water: The Sigrist ColorPlus 2 O3 Ozone meter for ultra-pure water measures the ozone concentration at a wavelength of 254nm according to standard DIN 19627 and the IOA (International Ozone Association). This instrument has a special measuring cell with a path-length of 100mm which allows measuring ozone in ultra pure water in the ppb range.

Measuring Ozone for Gases measures the ozone concentration according to standard DIN 19627 and the IOA at a wavelength of 254nm. According to these standards, the extinction coefficient is 3024 l/mol cm. Therefore, the ozone measurement can be regarded as an absolute measurement requiring no calibration with ozone.

A Closer Look

The ColorPlus O3 Ozone for Gases

There are unique measuring cells, with different path-lengths, for measuring ranges of low or high concentrations. The concentration readings (e.g. in g/m3) are valid for the current pressures and temperatures prevailing during measurement. However, for conversion to standard conditions, an external pressure and temperature sensor can be connected to the operating unit. The calculation is then automatically performed by the instrument.

Both the Ozone in Gas and Ozone in Water ColorPlus O3:

Operator Interface

Operation is preformed using the touch screen technology and colour display of the SICON, common to many other Sigrist instruments. Values, graphs, alarm and status messages can be selected and displayed. An internal data logger allows recalling and displaying measured data from the last 32 days. A variety of analogue and digital interfaces allows for system integration and control.

Ease of Maintenance

For validating the correct operation of either the Ozone in Water or Ozone in Gas instruments, a highly stable, homogenous and accurate optical checking unit, can be easily inserted into the instrument without requiring any tools.

DCS/PLC integration. We offer a range of output signals for efficient communication with your equipment.

• Up to four 4-20 mA outputs, Digital inputs and outputs
• Ethernet, Modbus TCP
• Optional: Profibus DP, Modbus RTU

HART optical calibration elements from a major aerospace company, the Calibration process couldn’t be easier. No chemicals. No mixing. No cost.

Specs at a Glance 

ColorPlus 2 O3: Ozone in Water analyser

Measuring principle                                                        UV Light Absorption

Nominal range                                                                  0 – 200 mg/l

Resolution                                                                          1 µg/l

Measuring wavelength                                                  254 nm

Enclosure                                                                            ANSI 304

Protection index                                                               IP65

Flow cell material                                                             ANSI 316L

Sample temperature                                                      max. 80°C

Sample pressure                                                              max. 600 kPa (= 6 bar)

ColorPlus 2 O3: Ozone in Gas analyser

Measuring principle                                                        UV Light Absorption

Nominal range                                                                  0 .. 300 g/m³

Resolution                                                                          1 mg/m³

Measuring wave length                                                 254 nm

Flow cell material                                                             ANSI 316L

Units                                                                                     mg/m³, %wt.

Linearity                                                                               Better than ±0.5% transmission