Technical specifications

Measurement technology

Membrane-covered, amperometric 2-electrode system

Measuring principle

Amperometry

Parameters

Chlorine dioxide

Measuring range

0...2 mg/L, 0...20 mg/L

Accuracy

Measuring range 2 mg/L:

at 0.4 mg/L < 1 %

at 1.6 mg/L < 1 %

Measuring range 20 mg/L:

at 1.5 mg/L < 0.1 %

Response time

T90: approx. 1 min

Run-in time

For initial commissioning approx. 2 h

Drift

approx. -1 % per month

Temperature compensation

Automatic, through integrated temperature sensor; temperature jumps must be avoided

Housing material

Microporous hydrophilic membrane, PVC-U, stainless steel 1.4571

Dimensions (Lx Ø)

~ 205 mm x 25 mm

~ 8.1" x 1"

Interface

RS-485, Modbus RTU

Power supply

9 - 30 VDC, max. 56mA

Connection

8pin M12 plug

Maintenance interval

Check measuring signal: typically once a week

Membrane cap change & electrolyte change: depending on the application

System compatibility

Modbus RTU

Warranty

1 year (EU&US: 2 years) on electronics;
wearing parts are excluded from the warranty

Process pressure:
Operation with retaining ring

1 bar*

~14.5 psi*

Calibration method

Chlorine determination with DPD-1 method

*No pressure surges and/or vibrations

Process temperature

0...+50 °C*

~ +32...+113 °F*

Flow rate

Approx. 15...30L/h in FLC-3, slight flow dependency is present

pH range

pH 1 ... pH 12, reduced pH value dependency

Conductivity

10 μS/cm...50 mS/cm (seawater)

Cross influences

Cl2 does not interfere; O3: factor 25

*no ice crystals in the sample water