CONDUCTIVITY TRANSMITTERS

DO9766T-R1 Conductivity transmitter for use on the field in a 122x120x57 housing with dual LCD (measurement+ temperature), output 4...20mA. The cell constant, the range and the temperature coefficient are completely configurable. 2 wire passive transmitter or 4 wire active transmitter.
Power supply in active function 24Vac, on request 230Vac, in passive function 10...35Vdc.
DO9786T-R1: Panel mounting conductivity transmitter in a 96x96 housing with dual LCD (measurement+ temperature), output 4...20mA. The cell constant, the range and the temperature coefficient are completely configurable. 2 wire passive transmitter or 4 wire active transmitter.
Power supply in active function 24Vac, on request 230Vac, in passive function 10...35Vdc.

DO9786T-R1 DO9766T-R1Conductivity transmitters convert the output of a conductivity electrode
into a signal, with temperature compensation, at 4÷20 mA.

The electrode input circuit is galvanically insulated against the 4÷20 mA output signal.
An 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 in conjunction with a conductivity electrode and a temperature
probe (Pt 100 sensor, 100 ohm at 0°C).

CONDUCTIVITY INPUT
Measuring range 0.0199.9 mS
2/4 electrodes Configurable cell constant 0.01...199.9 cm
Transducer energizing Square wave 10...1000 mV, depending on conductivity,
200...1600 Hz, depending on conductivity
Input impedance >100 Mohm
Cable length < 10 meters unscreened <50 meters screened (about 2 nF)
Accuracy 0.5% of reading ±2 digits ±0.01% per °C of drift in temperature

TEMPERATURE INPUT
Pt100 2/4 wire s -50...199.9°C
Transducer energizing 0.5 mA DC
Cable length < 10 meters unscreened <50 meters screened (about 5 nF)
Accuracy 0.2°C ±0.1% of reading ±0.01°C/°C of drift in temperature

TEMPERATURE COMPENSATION
None Manual: 
Linear 0.00 4.00%/°C -50...+200°C
Automatic: 
Linear 0.00 4.00%/°C -50...+200°C
Reference temperature: 20 or 25°C Configurable

CURRENT OUTPUT
4.00...20.00 ma: Programmable and proportional to conductivity
Accuracy 0.5% of reading ±0.02 mA
Insulation: 2500 VAC 1 minute

RELAY OUTPUT
A and B: Bistable, contact 3A/230 VAC free potential

POWER SUPPLY
Passive: 
4÷20 mA, 2 wire configuration, 10÷35 V
Active: 
24/230 VAC - 15/+10%, 1 VA, 48...62 Hz,
DO 9766T Container: 120x 1 22x56 mm, Protection class IP64
DO 9786: Container: 96x96x126 mm. Protection class IP44

CE CONFORMITY

Safety: EN61000-4-2, EN61 010-1 level 3
Electrostatic discharge: EN61000-4-2 level 3
Fast electric transients: EN61000-4-4 level 3
Energy impulse: 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 B

ORDER CODE:

DO 9786T: Conductivity transmitter 4÷20 mA passive or active, power supply 24 VAC with double display 96x96 mm, for panel mounting.
DO 9766T: Conductivity transmitter 4÷20 mA passive or active, power supply 24 Vac with double display 122x120 mm, for use on the field.
HD 882 M100/300: Temperature probe with Pt100 sensor, miniature head,
shaft 06x300 mm.
HD 882 M 100/600: Temperature probe with Pt100 sensor, miniature head,
shaft 06x600 mm.
HD 8712: Calibration solution 0.1 mol/l corresponding to 12,880 uS/cm at 25°C.
HD 8714: Calibration solution 0.01 mol/l corresponding to 1413 uS/cm at 25°C.