The resistive amplifier relay for level control ES 2001 works with the electrical conductivity property of the liquid, detecting the opening or closing circuit between two electrodes. A complete range of probes and rods are specially designed to answer to all type of applications.
The sensibility is adjusted in relation to the liquid conductivity from 1 to 150 kOhm. The hysteresis between on/off relay switching is about 10% of sensibility; This is to avoid false alarms originated by smog, foam or condensation of vapours. With both timers, it is easy to adjust the level detection or level regulation even if the fluid surface is moving (small wave effect).

- Reed contact, models included in BRK60, BW60, CNL, MNR6, MNR7 etc.
- Flow switch, such as ZE951 (IDP – PDP), CDP etc.

Also on level control for electrically conductive liquid media:
Minimal or maximal levels – Dosing, flow detection and alarm, pump control, solenoid valve control, fluid detection in a pipe.
With appropriate electrodes for use as limit transducer in: Water, wastewater –
Acids, lye – Brines, etc.

It is necessary to have one relay ES2001 for each detection level.

Power supply: 230 V AC, ±10%, 50-60 Hz 
Optional: 24, 48, 115 V AC or 12, 24 V DC ±10% 

Consumption: 2 VA
Working temperature: Maximal, +45°C
Housing: IP40 – cabinet, tropicalized version, on request
Mounting: Rail DIN 46277
Galvanic insulation: Between main line and electrodes circuit
Sensitivity: 2 adjustable ranges, 1...70 kOhm and 5...150 kOhm

Outputs: 2 ea. floating changeover contacts
AC: max. 250 V, 5 A, 500 VA
DC: max. 125 V, 1 A, 40 W
Screw connectors for reverse contact  

Timers, adjustable: t = 0.5 to 5 s for increasing level
0.5 t for decreasing level
Hysteresis: approx. 10% of adjusted sensitivity
Electrodes circuit: 6 V AC, < 1.5 mA
Indicators: 1 operating LED, 1 switching status LED