POLYMETRON Измеритель растворённого кислорода 9582

Principle of operation:

The Polymetron 9582 dissolved oxygen analyzer is based on the Clark cell principle. The oxygen-permeable membrane of the probe isolates the water sample from the electrodes, so no sample conditioning is required. Other reducing or oxidizing ions cannot pass through the gas-permeable membrane and therefore do not interfere with the measurement.

• A constant voltage is applied to the two electrodes to keep the potential of each electrode constant. The gold working electrode (cathode) reduces the dissolved oxygen in the water sample to hydroxide ions: O2 + 2H2O + 4e- --> 4OH. The oxidation reaction takes place on the surface of the large silver electrode (anode):

• 4Ag+ + 4Br- --> 4AgBr + 4e-

The above redox reaction generates a diffusion current proportional to the dissolved oxygen concentration. The dissolved oxygen analyzer converts the measured current into the dissolved oxygen concentration in the water sample and displays it on the screen.

Features and benefits:

• The Polymetron 9582 dissolved oxygen analyzer uses the electrochemical probe method, which meets the habits of more users and is classic and reliable.

• Fast calibration: calibration from ppm level to ppb level can be completed in less than about 15 minutes.

• Low detection limit, with a minimum detection limit of < 1 ppb.

• The Polymetron 9582 dissolved oxygen analyzer uses the universal 9500 controller for easy integration.

• Simple probe installation and operation. The membrane assembly is pre-installed and can be replaced in just a few seconds.

Technical specifications

• Measuring range                               0 ~ 2000 ppb (0-2 ppm)

• Minimum detection limit                            < 1 ppb

• Units                                      mg/L, ppm, μg/L, ppb, mbar, hPa, inch Hg, mmHg

• Repeatability                                  ± 0.5 ppb or ±5%, whichever is greater

• Reproducibility                                ± 0.5 ppb or ±2%, whichever is greater

• Response time                                For a step change of 1-40 ppb: < about 30 seconds

• Maintenance interval                          Membrane life: 6 months, depending on the sample

• Operating temperature range                       -20 ~ 60 °C (0 ~ 95% RH, non-condensing)

• Temperature compensation                          Automatic compensation over 0 ~ 45°C (32 ~ 113 °F)

• Connection                                    1/4 inch NPT threaded connection (6 mm or 1/4 inch tubing recommended)

• Sample flow rate                          66 ~ 333 mL/min (4 ~ 10 L/hr)

• Ordering information

• Complete analyzer

• 9582.99.00P4    9582 dissolved oxygen system, AC-DC

• 9582.99.01P4    9582 dissolved oxygen system, Modbus 232/485, AC-DC

• 9582.99.03P4    9582 dissolved oxygen system, Profibus, AC-DC

• Communication module options

• 9334600    4-20 mA output module (with 3 additional mA outputs)

• 9013200    Modbus 232/485 module

• 9173900    Profibus DP module

• 9525700    pH / ORP analog module for POLYMETRON sensors

• 9525800    Conductivity analog module for POLYMETRON sensors

• Accessories and consumables

• 09181=A=3600    Dissolved oxygen probe electrolyte, 25 mL

• 09185=A=3500    Dissolved oxygen membrane, box of 4

• 09182=A=1000    9582sc replacement electrode