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DO9403T-R1 – pH / mV Transmitter
Brand: Delta OHM S.R.L.DO9403T-R1 pH transmitter converts the output of a pH electrode, with temperature compensation, into a 4…20 mA signal.
The pH or Redox electrode input circuit is galvanically isolated from the 4…20 mA output signal.
An LCD indicator allows to display the value of the process signal and the various parameters.
The accurate design and choice of the components make the instrument precise and reliable over time.
The instrument works with a pH or Redox electrode and a temperature probe (Pt100 sensor, 100 Ω at 0°C).
1 - 2 of 2 Part Numbers
DO9403T-R1
DO9403TR-R1
1 - 2 of 2 Part Numbers
Specifications
Brand
Combined Electrode Input
- pH: -1.00 pH…15.00 pH (-500…+500 mV)
- ORP: -1999…+1999 mV
- Input: impedance > 1012 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 < 20 metres screened (about 2 nF)
- Accuracy: 0.2° C ± 0.1 % of Reading ± 2-digits ± 0.01° C/°C
pH Electrode Temperature Compensation
- Automatic or manual: According to Nernst
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
Temperature
- Operation: 0 to 50° C
- Storage: -20 to 70° C, No condensation
Case
- External dimensions: 120 x 80 x 56 mm
- Protection degree: IP64