16
and in no case less than that declared in the “Technical specifications” section. The EFka270 unit must be installed on a
vertical wall and securely clamped. Choose a location that allows easy calibration operations, use and maintenance.
Place the tanks of the products to be dosed below the pumps, without exceeding the maximum suction height of the pumps
(about 1.5 m). If the system is installed below the level of the liquid to be dosed, check the condition of the injection valves or
install appropriate anti-siphon kit. If the pump is placed above the tank and the reagent fumes could be especially
aggressive, check the tank seals.
Connect the connectors may be disconnected for packaging reasons to the respective inputs on the bottom of the
unit (see the “Functional description” section for further details).
TECHNICAL SPECIFICATIONS
pH/RX Inputs
available on BNC connectors, input impedance > 10^12
Ω
Measure Ranges
0.00 to 14.00 pH, 0 to 1000 mV (redox),
Precision
better than 1% of the full scale
Repeatability
better than 0.2% of the full scale
Configuration
two configuration level (standard and advanced)
Digital Inputs
2 independent inputs for level sensors, available on connectors,
accept voltage-free contact 5 V / 5 mA;
1 FLOW input that can be used for connecting both the filter pump
contactor or the flow sensor (voltage-free contact 5 V / 5 mA)
Display
large alphanumeric, double row (x 16 characters) LCD, with backlight
Electrode-holder
down-flow type, transparent methacrylate body, with standard connections for
8x12 tube and sampling needle
Dosing Pumps
Flow rate: 1,5 l/h @ 1 bar for pH adjustment (acid dosage)
6 l/h @ 1 bar for chlorine dosage
Materials: fiberglass reinforced PP pump head and fittings, Santoprene internal tube,
PBT roller holder with Delrin (self-lubricant) rollers
Max suction height: 1.5 m
Power Supply
230 V~ ±10%, 50 Hz, max 80 VA
Protection Fuse
F1A 5x20 (@ 230V~)
Environment
Storage temperature
-20 to +60 °C
Working temperature
-10 to +40 °C
RH
max 90% noncondensing
Casing
self-extinguish plastic material with polyester front panel
Installation
wall installation with supplied screws and stoppers
Protection Rate
IP65
Dimensions
380 x 350 x 175 mm
Fixing Template
356 x 250 mm
Weight
approx. 5 kg
Dimensions
