ENR filling or emptying function ENR Part number 84870203
Regulation of two levels :
-minimum
-maximum
Monitoring filling (UP) or emptying (DOWN), selected by a switch on the front panel.
Probes supplied with AC current.
Sensitivity adjustable on front panel from 5 kΩto 100 kΩ
.
Part numbers
Specifications
Operating principle
Monitoring maximum and/or minimum levels of conductive liquids (tap water, sea water, waste water, chemical solutions, coffee, etc).
The principle is based on measuring the apparent resistance of the liquid between two submerged probes. When this value is lower than the preset threshold displayed on the unit's front panel, the
output relay changes state. To prevent any occurrences of electrolysis, an AC current is passed through the probes. Areas of application include the agri-food, chemical and other industries.
Adjusting two levels : Minimum/Maximum
The output relay changes state when the level of liquid reaches the maximum electrode, with the minimum electrode submerged. It returns to its initial state when the minimum probe is no longer in
contact with the liquid.
Note
If the power break T lasts for 1 second or more, the relay reenergises instantly when in "UP" mode and is de-
energised when in "DOWN" mode.
Type
Characteristics
Voltages
84 870 203
ENR
Monitoring filling (UP) Monitoring emptying (DOWN)
120 V AC
Operating range
0.85→1.10xUn
Maximum power consumption
3 VA
Adjustable sensitivity
5 k
Ω
→100k
Ω
Measurement accuracy (at maximum sensitivity)
±
30 %
Electrode voltage (max)
24 V AC (50/60 Hz)
Electrode current (maximum)
1 mA (50/60 Hz)
Maximum cable capacity
10 nF
Response time high level
300 ms
Response time low level
500 ms
Output relay (according to AC1 resistive load)
1 AgNi changeover relay 8 A AC max.
Galvanic isolation via transformer (4 kV, 8 mm creepage
distance)
Class II
Isolation of contacts and electrodes from power supply
2.5 kV AC
Operating temperature range (°C)
-
20→+50°C
Storage temperature range (°C)
-
40→+70°C
Weight (g)
150
Principles
N
o
Legend
Maximum level
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
26/02/2014 www.crouzet.com
A1-A2 : power supply
Minimum level
Output relay : Down or Up
Dimensions (mm)
ENR
Connections
ENR
N
o
Legend
*** TRADUCTION MANQUANTE ***
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
26/02/2014 www.crouzet.com
