bcv1410a0600h_05 - 1/2
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1. INTRODUCTION
The
NIMET BC
capacitive proximity sensors are for industrial automation tasks for non-contact detection of metallic and non-
metallic objects (water, plastic, stone, wood, etc.). The
NIMET BC
capacitive proximity sensors operate like an open capacitor.
The dielectric of the capacitor is the air. If there is an object with a significantly different dielectric constant in the sensing area,
the switch will change state. The material-dependent sensitivity can be set with the potentiometer. Devices with a DC power
supply have short-circuit protected PNP or NPN transistor outputs. Devices with an AC power supply have a thyristor-driven
output. Furthermore, there is a LED and a potentiometer on the backplate of the device. The LED shows the output state.
2. TECHNICAL DATA
G
ENERAL
D
ATA
Type
BCV–
BCZ–
BCV–
BCZ–
141
142
161
162
145
165
Sensing distance
8 mm
15 mm
8 mm
15 mm
Metal holder min. distance
10 mm
30 mm
Hysteresis
Max 20 % of sensing distance
Supply voltage (operational)
12–24 VDC (10–30 VDC)
100–240 VC (85–264 VAC)
Sensitivity adjustment With
potentiometer
Max. current consumption
15 mA 2.2
mA
Residual voltage
1.5 V
20 V
Max. response frequency
50 Hz
20 Hz
Setting distance
0–5.6 mm
0–0.5 mm
0–5.6 mm
0–10.5 mm
Output
30 VDC transistor 230
VAC
NPN PNP NPN PNP
thyristor
Maximum output load
Resistive load: 200 mA, Inductive load: 100 mA
Sensing distance temperature sensitivity
±10% max for sensing distance at +20°C, within the temperature range of
−
25°C…+70°C
Housing
18 mm
30 mm
18 mm
30 mm
Housing material
Plastic
Metal
Plastic
Metal
Connection, 2 m cable with plastic
insulation
3 x 0.25 mm
2
2 x 0.25 mm
2
Ambient temperature
−
25°C…+70°C
Electrical protection
Class III.
Class II.
Ingress protection
IP66
IP65
IP66
IP65
Weight
~72 g
~212 g
~63 g
~220 g
2.1
Accessories
User’s manual
Warranty card
EU declaration of conformity
Two hex nuts for mounting
2.2
O
RDER CODE
(N
OT ALL COMBINATIONS ARE POSSIBLE
!)
NIMET B C – 1 –
T
YPE
[Ø mm]
C
ODE
S
ENSING DISTANCE
[mm] C
ODE
O
UTPUT
C
ODE
S
UPPLY VOLTAGE
C
ODE
18
V
8
(
Ø18
)
0
NPN / NO
1
230 V AC
1
30
2
15
(
Ø30
)
5
PNP / NO
2
10–30 V DC
4
Thyristor / NO
5
2.3
D
IMENSIONS
BCV–14
–
BCZ–16
–
3. INSTALLATION
The device must be mounted with the two hex nuts provided with it so that the distance
between the device and the object to be detected is less than 70% of the sensing (switching)
distance of the given device.
Materials of sensing targets: Sensing distance may be different due to the electrical
characteristics of the target (conductivity, non-dielectric constant) and its physical
properties, like water absorption, size etc.
High-frequency electric fields may cause malfunction, e. g., fields generated by
washing machines, etc.
Surrounding environment: water or oil on the surface of the sensing part may cause a
malfunction. If the sensing bottle is covered in oil etc., it may cause a malfunction.
Especially in the case of the 15 mm version
(BCZ–16
–
)
, which is highly sensitive
to certain objects and water droplets.
Oil: Do not let the oil or other liquid flowed into the sensor or in the plastic case.
3.1
M
UTUAL INTERFERENCE
&
EFFECTS OF SURROUNDING METALLIC OBJECTS
When several proximity sensors are mounted close to one another, the sensors may
malfunction due to mutual interference. Therefore, be sure to provide a minimum distance
between sensors as per the chart below.
Type
BCV–14
–
BCZ–16
–
A [mm]
48
90
B [mm]
54
90
When sensors are mounted on a metallic panel, the sensors must be prevented from being
affected by any metallic objects except the target. Therefore, be sure to provide a minimum
distance as per the chart below.
Type
BCV–14
–
BCZ–16
–
ℓ
[mm]
20
10
d [mm]
54 90
m [mm]
24
45
n [mm]
54
90