DO 9785T pH Transmitter. Panel mounting pH or mV completely configurable, 96x96 with dual LCD (measurement + temperature), output 4...20mA insulated with 2 wire passive or with 4 wires active.
Power supply in active function 24Vac, on request 230Vac, in passive function 10...35Vdc.
DO 9765T pH Transmitter. pH or mV completely configurable, for use on the field 122x120x57 with dual LCD (measurement + temperature), output 4...20mA insulated with 2 wire passive or 4 wire active.
Power supply in active function 24Vac, on request 230Vac, in passive function 10...35Vdc.
DO 9785T and DO 9765T pH transmitters indicators
| Model | Description |
|---|---|
| DO 9785T | pH Transmitter. Panel mounting pH or mV |
| DO 9765T | pH Transmitter. pH or mV completely configurable |
DO 9785T and DO 9765T pH transmitters indicators convert the output of a pH electrode,
with temperature compensation, into a signal at 4÷20 mA.
The pH electrode input circuit is galvanically insulated against the 4÷20 mA output signal.
An LCD indicator allows viewing of the process signal value and 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 pH electrode or Redox and a temperature
probe
(Pt100 sensor, 100ohm at 0°
C).
TECHNICAL CHARACTERISTICS:
Combined electrode input:
pH: -1.00 pH...15.00 pH (-500...+500 mV)
ORP: -1999...+1999 mV
Cable length: <50 meters screened (about 5nF)
Accuracy: 0.1% of reading ±
1 digit ±
0.01% pH per °
C of drift in temperature
Temperature input:
Pt100 2/4 wires: -50...+199.9°
C
Transducer energizing: 0.5 mA DC
Cable length: <10 meters unscreened and <50 meters screened (about 2 nF)
Accuracy: 0.2°
C ±
0.1% of reading ±
2 digits ±
0.01°
C/°
C
Temperature compensation pH electrode:
Automatic according to Nernst.
Current output:
4.00... 20.00 mA.
Programmable and proportional
Accuracy: 0.5% of reading ±
0.02mA
Insulation: 2500 VAC for 1 minute
Relay output:
A and B Bistable,
contact 3A/230 VAC free potential
Power supply:
Passive: 4÷20 mA, 2 wire configuration, 10÷35V
Active: 24/230 VAC - 15/+10% 1 VA, 48...62Hz
DO9765T
Container:
External dimensions: 120x122x56 mm
Protection class: IP 64
DO9785T.
Container:
External dimensions: 94x96x126 mm
Protection class: IP 44
CE
conformity:
Safety: EN61000-4-2, EN610120-1 level 3
Electrostatic discharge: EN61000-4-2 level 3.
Fast electric transients: EN61000-4-4 level 3, EN61000-4-5 level 3.
Voltage variation: EN61000-4-11 level 3.
Susceptibility to electromagnetic interference: IEC1000-4-3.
Emission of electromagnetic interference: EN55020 class