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Process pH controller

pH/mV digital industrial transmitter dual digital display

The pH transmitter converts the output of a pH electrode, with temperature compensation, into a signal at 4÷20 mA.

  • The pH electrode input circuit is galvanically insulated against the 4÷20 mA output signal
  • An LCD indicator allows viewing of the process signal value and of the various parameters
  • The accurate design and choice of components make the instrument precise and reliable for a long working life
  • The instrument works with a pH electrode or Redox and a temperature probe (Pt 100 sensor, 100 Ω at 0°C)

Technical specifications

Range pH – 1 pH… 15 pH
Range mV – 500… + 500 mV
Range ORP – 1999… + 1999 mV
Input impedance >10 Tohm
Cable length ​​​<50 metres screened (about 5 nF)
Accuracy 0.1% of reading ±1 digit ±0.01% pH per °C of drift in temperature
Range temperature (PT100 2/4 fili) – 50°C…+ 199°C
Accuracy 0.2°C ±0.1% of reading ±2 digits ±0.01°C/°C
pH electrode compensation temperature A Automatic According to Nernst
Manual -50÷200°C
Current output  4.00...20.00 mA Programmable and proportional to the pH or mV value
Accuracy 0.5% of reading ±0.02 mA
Insulation 2500 Vac 1 minute
Display  LCD
Dimensions 120 x 122 x 56 mm
Power supply Passive 4÷20 mA, 2 wire configuration, 10÷35 V
Active 24 or 230 Vac - 15/+10% 1 VA, 48...62 H
Protection class IP64

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