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ENGLISH
CONTROLLER DESCRIPTION
The eSelect-CD1 is a compact system with ELECTRICAL CONDUCTIVITY (EC) controller. In many cases, conductivity is linked directly
to the total dissolved solids (T.D.S.): conductivity provides an approximate value for the TDS concentration, usually to within ten-percent
accuracy. eSelect-CD1, along with the high quality performance in terms of measurements and functions thus satisfying most of the
requirements for an instrument, it offers many features thus making it extremely versatile and easy to operate. Conductivity measurement are
in micro Siemens features 4 K factor ranges (Cell Constant) suitable for following K:
Controller covers ranges from costant K 1 up to 20.00 mS and even 100.00 mS (latter with graphite sensor electrodes) and costant K 5
ranges 2.000 μS;
BENEFIT: The above feature allow dealers to stock one type for all controller thus reducing stock value or saving problems when
issuing orders to manufacturer.
Two types of programming menu:
•
Basic making life easier for those home applications such small swimming pool or water treatment systems;
•
Expert for professionals giving the opportunity to refine measurements and safety functions.
A friendly user menu programming it is almost self-explanatory and the elegant wide display allows easy vision.
TECHNICAL CHARACTERISTICS
Conductivity EC Measuring range and K factor (cel
constant):
▪ K 1 ranges up to 20.00 mS and even 100.00 mS (latter with graphite sensor
electrodes) / Hysteresis / PWM point = 500 μS
Resolution 10 μS
▪ K 5 ranges up to 2.000 μS / Hysteresis / PWM point = 50 μS
Resolution 1 μS
▪ K10 ranges up to 200 μS / Hysteresis / PWM point = 0,50 μS
Resolution 0,1 μS
▪ K 0.1 ranges up to 100.00 mS / Hysteresis / PWM point = 5000 μS
Resolution 100 μS
(only with graphite sensor electrodes)
Temperature setting:
automatic with combined conduc PT100 or NTC system
Temperature probe range:
– 20 ....100°C
▪ Resolution 0.1% °C ▪ Accuracy: ± 0.5% °C
Power supply / Power consumption:
Universal power supply 100
÷
250 Vac / 5W at 240 V AC
Microprocessor technology:
SMD components mounting, digital controls keypad 6 key
Linearity, Stability Reproducibility:
±
0.5 % under standard conditions
Display:
back-lit custom display (126x64); Display visible area 70x37 mm
Delay:
Delay time relay activation, programmable for each set-point (999 sec.)
Start-up Delay:
Delay time relay when switching ON, programmable on each set-point
PARAMETER
VALUE
Measure
Conductivity up tol 20mS
Type of probe
PTFE with graphite electrodes, k=1
Power supply
100
÷
240 Vac – 50/60 Hz – 6W
Display
Graphic 128x64 (visible area 70x37 mm)
Power supply protection
The whole power pack (there is no fuse)
Temperature probe
PT100, 0,1°C resolution
External casing
ABS, IP65
Inputs
Level, Proximity
Relay outputs
2 relay outputs (set-point 1 and set-point 2) ON-OFF or PWM type
Relay outputs features
maximum 5A on resistive load, maximum 1A on inductive load, 230Vac
mA outputs
1 mA galvanically separated output
mA outputs features
500 ohm maximum load impedence
Alarm
Overdosing alarm
Accessories
Wall mounting kit
Measures
120 x 200 x 90,5
Weight
Net weight: 1230 gr - Gross weight: 1255 gr
Front controls
Polycarbonate adhesive
Working temperature
0
÷
50 °C
