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DO9786T-R1 – Panel Mounting Conductivity Transmitter

Brand: Delta OHM S.R.L.
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Does not ship to United States

DO9786T-R1 transmitters convert the output of a conductivity electrode with temperature compensation into a 4÷20 mA signal.

Housing dimensions 96 x 96 mm for panel mounting with dual LCD (measurement + temperature), output 4…20mA.

The cell constant, the range and the temperature coefficient are completely configurable. 2-wire passive transmitter or 4-wire active transmitter.

Power supply in active mode 24Vac, on request 230Vac, in passive mode 10…35Vdc.

The electrode input circuit is galvanically insulated against the 4÷20 mA output signal.

The 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 in conjunction with a conductivity electrode and a temperature probe (Pt100 sensor, 100 Ω at 0°C).

Specifications

Brand

Input Conductivity

  • Input: impedance > 10^12 Ω
  • Cable length: < 50 meters screened (about 5 nF)
  • Accuracy: 0.1 % of Reading ± 1-Digit ± 0.01 % of pH per °C of temperature drift
  • Measuring Range: 0.0…199.9 mS
  • 2/4 electrodes: Configurable cell constant 0.0…199.9 cm-1
  • Transducer Energizing: Square wave 10…1000 mV, 200…1600 Hz, depending on conductivity

Temperature Input

  • Pt100 2/4-Wires: -50…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

Compensation Temperature

  • Automatic: Linear 0.00…4.00 %/°C -50…+200° C
  • Manual: Linear 0.00…4.00 %/°C -50…+200° C
  • None:
  • Reference temperature: 20 or 25° C configurable

Current Output

  • 4…20 mA: Programmable and proportional to conductivity
  • 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 Vac (or 230 Vac on request) -15/+10 %, 1 VA, 48…62 Hz
  • Passive: 4…20 mA, 2-Wire configuration, 10…35 V

Case DO9766T

  • External dimensions: 120 x 122 x 56 mm (use on the field)
  • Protection class: IP64

Case DO9786T

  • External dimensions: 96 x 96 x 126 mm (panel mounting)
  • Protection class: IP44

Documentation

Datasheet

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