Model: TRDO-9786T
PRODUCT OVERVIEW
CONDUCTIVITY TRANSMITTERS TRDO-9786T transmitters convert the output of a conductivity electrode with temperature compensation into a 4÷20 mA signal.
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 (Pt100 sensor, 100 Ω 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
