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DO9785TR – pH or mV Configurable Transmitters. Power Supply Active Mode 24 Vac
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Panel mounting pH or mV configurable, dual LCD, output 4...20mA insulated with 2 wires passive or with 4 wires active. Power supply active mode 230 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
