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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

1 - 12 of 14 Part Numbers
CP
CP
Extension Cable For Connecting The Electrode To The DO9785 (BNC-S7) L = 1.5 m.
CP5/10T
CP5/10T
10 m Extension Cable For Connecting The Electrode To The Transmitter. S7 On One Side, Wires On The Other Side.
CP5/20T
CP5/20T
20 m Extension Cable For Connecting The Electrode To The Transmitter. S7 On One Side, Wires On The Other Side.
CP5T
CP5T
5 m Extension Cable For Connecting The Electrode To The Transmitter. S7 On One Side, Wires On The Other Side.
DO9765T
DO9765T
pH or mV Transmitter
pH or mV completely configurable, with dual LCD, output 4...20mA insulated with 2 wires passive or 4 wires. Power supply active mode 24 Vac.
DO9785T
DO9785T
DO9785T – pH or mV Configurable Transmitters. Power Supply Active Mode 24 Vac
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 24 Vac.

DO9785TR
DO9785TR
DO9785TR – pH or mV Configurable Transmitters. Power Supply Active Mode 24 Vac
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.
HD8600C
HD8600C
ACCREDIA ISO 17025 Certified Buffer Solutions Kit
ACCREDIA ISO 17025 certified buffer solutions kit: pH 4.01+ pH 7.00 + pH 10.01. Two 50 ml bottles for each type (6 bottles in total).
HD882/L106
HD882/L106
Temperature Probe For Industrial Use, Pt100 Sensor, Shaft Ø6 x 45 mm.
HD882DM100/600
HD882DM100/600
Temperature Probe With Pt100 Sensor, DIN B Head, Stem Length 600 mm.
KPI10
KPI10
Combined Industrial Electrode, S7 PG13.5 Connector, Glass Body, Ag/ AgCl Sat KCl Ø 12 x 120 mm, Temperature 0…130°C.
KPI11
KPI11
Combined Industrial Electrode, S7 ¾” NPT Connector, Rytron Body, Ag/ AgCl Sat KCl, Temperature 0…100°C
1 - 12 of 14 Part Numbers

Specifications

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

Documentation

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