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Tuesday, 09 19th

Last updateMon, 15 Sep 2014 5am

CL 7685.001

PID controller for D.Ozone, Residual Chlorine

 Add the following to the common Features/Specifications of the 7685 Series shown overleaf 

• Applications:

- Ozone generators

- drinking water

- water treatment

- bottling industry

- OEM

• Input from

- Potentiostatic sensor

- Polarographic selective membraned sensors:

- Total Chlorine gas sensing method

• Input from Pt100 3 wires

• Ranges: 0/2 PPM - 0/20 PPM - 0/200 PPM autoranging

• Dual filter software

• Calibration mode: immediate or postponed

• Calibration parameters display

• Dual set-point and alarm conditions display

• Temperature display

• Automatic or manual temperature compensation

• Isolated output:

- 0/20 mA or 4/20 mA selectable

- programmable input on the span

• PID output:

- 0/20 mA or 4/20 mA isolated output

- dual relay for stepping motor

• Automatic or manual operation

• Alarm on set-point deviation

• Continuous/flashing alarm

• EEPROM parameters storage

• Automatic overload protection and reset

• Extractable terminal block

• 96x96 (1/4 DIN) housing 

Compatible accessories 

SZ 283

Potentiostatic measuring sensor

SZ 7231

Flow cell for Chlorine and D. Ozone

SZ 7233

Flow cell for Chlorine / D. Ozone, pH, ORP sensors

SZ 7251

Autoclean flow cell

CL 7901

Flow cell and sensor for Free Chlorine

OZ 7901

Flow cell and sensor for D. Ozone 

Specifications 

* Measuring              : D.Ozone/Residual Chlorine

* Measuring cell       : Potentiostatic/Polarographic 

Polarographic cell

Current                      : 160 nA/PPM at 20 °C

* Scales                     : 0/2.000 PPM - 0/20.00 PPM -0/200.0 PPM

Zero adjustment       : ± 200 nA

Cell sensitivity          : 12.5/250 % 

Potentiostatic cell

* Scales                     : 0/2.000 PPM - 0/20.00 PPM

Zero adjustment       : ± 2 μA

Cell sensitivity: 12.5/250 %

* Polarization                        : -200 mV (0/-1250 mV)

* Filter software 90%RT: 0.1/20.0 s for small/large variations 

Temperature

Input: Pt100 3 wires

Measuring and compensation range: -2/52 °C

Manual temperature: -2/52 °C

Resolution: 0.1 °C

Zero adjustment: ± 1 °C

* Temperature coefficient: 0/4.0 %/°C 

Regulation:

* 4/20 mA or 0/20 mA/Stepping motor

* Motor time: 10/120.0 s

* Dead time: 0/20.0 s

Manual starting position: 0/100.0 % 

Set-point: any value in the measuring range

* Dead band: 0.2/20.0 % (stepping motor)

Proportional band: 0.1/400.0 %

* Derivative: 0/1200 s

* Integral: 0/3600 s 

Option 091.4143

9/36 VDC power supply

 

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