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DO9765T

Series: DO9785T – pH or mV Configurable Transmitters Brand: Delta OHM S.R.L.

pH or mV Transmitter

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pH or mV completely configurable, with dual LCD, output 4...20mA insulated with 2 wires passive or 4 wires. Power supply active mode 24 Vac.

Specifications

Brand

Combined Electrode Input

  • pH: -1.00 pH…15.00 pH (-500…+500 mV)
  • ORP: -1999…+1999 mV
  • Input: impedance > 10^12 Ω
  • Cable length: < 50 m screened (about 5 nF)
  • Accuracy: 0.1 % of Reading ± 1-Digit ± 0.01 % of pH per °C of temperature drift

Temperature Input

  • Pt100 2/4-wires: -50 to 199.9° C
  • Transducer energizing: 0.5 mA DC
  • Cable length: < 10 metres unscreened < 50 metres screened (about 2 nF)
  • Accuracy: 0.2° C ± 0.1 % of Reading ± 0.01° C/°C

pH Electrode Temperature Compensation

  • Automatic: According to Nernst
  • Manual: -50° to 200° C

Current Output

  • 4…20 mA: Programmable and proportional to the pH or mV value
  • Accuracy: 0.5 % of Reading ± 0.02 mA
  • Insulation: 2500 Vac 1 minute

R Load

  • Load resistance: RLmax = Vdc-10/0,022 RLmax= 636 Ω @ Vdc = 24 Vdc

Relay Output

  • A and B: Bistable, contact 3 A/230 Vac free potential

Power Supply

  • Active: 24 or 230 Vac -15/+10 % 1 VA, 48…62 Hz
  • Passive: 4…20 mA, 2-Wire configuration, 10…35 V

Housing DO9785T

  • External dimensions: 96 x 96 x 126 mm
  • Protection class: IP54

Housing DO9765T

  • External dimensions: 120 x 122 x 56 mm wall mounting
  • Protection class: IP64

Documentation

Datasheet

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