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DO9785T – pH or mV Configurable Transmitters
Brand: Delta OHM S.R.L.DO9785T pH transmitters convert the output of a pH electrode, with temperature compensation, into a 4÷20 mA signal.
The transmitter is completely configurable and suitable for panel mounting.
Dimensions 96 x 96 mm with dual LCD (measurement + temperature), output 4…20 mA insulated with 2 wires passive or 4 wires active.
Power supply in active mode 24 Vac, on request 230 Vac, in passive mode 10…35 Vdc.
The pH 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 with a pH electrode or Redox and a temperature probe (Pt 100 sensor, 100 Ω at 0°C).
Contact us for more information or a quotation
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 meters 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…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…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
