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CL 7685.010 Cl2, O3 analyzer selective membraned sensors

CL 7685.010 Cl2, O3 analyzer selective membraned sensors

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The controller can be connected to different polarographic sensors: free chlorine and chlorine dioxide, combined chlorine, d. ozone, ammonia. It provides manual and automatic temperature compensation. The instruments provides also the temperature reading.
FeaturesTechnical DataApplications

Specifications

  • Scales in ppm
  • Measuring units: Cl2, ClO2, D.O3, NH3
  • Temperature readout by means of Pt100
  • Range: 0/2,000 ppm – 0/20,00 ppm – 0/200,0 ppm
  • Temperature range: -2/+52 °C
  • Operating mode: automatic and manual
  • Set-point and alarm conditions display
  • Dual analog output: 0/20 – 4/20 mA isolated, load 500 Ohm
  • 2 set-point with PFM, PWM or min/max function, hysteresys and delay time programmable
  • Min/max and set-points timing alarm relay
  • Power supply 110/220 V,  5 VA
  • Dimensions: 96x96x155 mm.  DIN 43700

Technical Specifications
in addition to those common in the series 7685

Input current
160 nA/PPM at 20 °C

* Scales
0/2.000 PPM – 0/20.00 PPM -0/200.0 PPM
(Cl2, ClO2, D.O3, NH3)
Zero adjustment: ± 0.2 µA
Cell sensitivity: 12.5/250 %
* Polarization: -200 mV (0/-1250 mV)
*Temperature coefficient: 0/4.0 %/°C
* Filter software 90%RT: 0.4/50.0 s for small/large variations

Temperature
Input: Pt100 3 wires
Measuring and compensation range: -2/52 °C
Resolution: 0.1 °C
Zero adjustment: ± 1 °C

Set-point A and B
* Selectable action: ON/OFF – PFM – PWM

PFM/PWM action
Proportional band: 0/10 % of the scale
Pulse frequency: 0/120 pulse/min
Pulse width: 0/99.9 s

Option
091.4143 9/36VDC power supply

Applications CL 7685.010

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