Omron E7B Quick Start Manual

Capacitive Level Sensor
Compact, High Sensitivity Level Sensor
Uses Capacitance to Detect Product
Submersible oil resistant construction for use in
aggressive environments.
Low mutual interference enables close mounting of
multiple units.
Installation with E7U controller provides dual sensor
control for dependable high–low level control.

Ordering Information

Function type
General purpose
High sensitivity type

Specifications

Item
Supply voltage
Operating voltage range
Current consumption
Oscillation frequency
Operating sensitivity
Stable operating sensitivity
Control Output
Variation due to temperature
fluctuation
Variation due to voltage fluctuation
Min. permissible resistance by
material adhering to electrode
Insulation resistance
Dielectric strength
Vibration
(mechanical durability)
Shock
(mechanical durability)
Pressure resistance of electrode
Ambient temperature
Ambient humidity
Degree of protection
Weight (circuit section)
Probe type
See chart
Polyacetal covered
stainless steel
Stainless steel
24 VDC (ripple: 10% max.)
15% of rated voltage
21 mA max.
Approx. 600 kHz
0 to 20 pF
1.5 pF max.
Solid–state output: 24 VDC 100 mA max. (output resistance: 6.8 kΩ)
0.8 pF max.
0.2 pF max.
100 kΩ min.
Data are excluded because case is grounded
10 to 25 Hz, 1.5 mm double amplitude
2
200 m/s (approx. 20 G's)
2
16 kg/cm max.
Operating: –10 to 70 C
Operating: 35% to 95% RH
Submersible construction (JIS C0920), IP67 (IEC 144)
Approx. 600 g (E7B-111)
Detectable material
E7U
Type
E7B–111
E7B
Controller unit Sensing probe
E7B-311M
E7B-111
E7B–311M
0 to 100 pF
5.0 pF max.
1.5 pF max. (within ambient operating
temperature range)
1.0 pF max. (within operating voltage range)
30 kΩ min.