Specifications are subject to change without notice (14.03.2006)
1
Photoelectrics
Through-beam
Type ET 1820 DC, Nickel-plated Brass Housing
Product Description
Type
Housing diameter
Range
Output type
Housing material
Connection type
• Range: 20 m
• Adjustable sensitivity
• Modulated infrared light
• Make and break switching functions,
NPN, PNP (200 mA)
• LED-indication for power supply ON (emitter) and
target detected (receiver)
• Supply voltage: 10 to 40 VDC
• Heavy duty M18 metal housing, IP 67
• Cable and plug versions
Ordering Key
The ET1820 is a family of gen-
eral
purpose
through-beam
sensors in an industrial stan-
dard M18 nickel-plated brass
housing for heavy duty appli-
cations. They are useful for
simple applications where a
basic sensor provide adequate
sensing performance. The sen-
sors are easy to adjust with a
270° single turn potentiometer.
The output is a 4-wire comple-
mentary (NO and NC) circuit
with NPN (current sinking) or
PNP (current sourcing) open
collector transistor output.
Housing
Rated
Connection
Ordering no.
Ordering no.
Ordering no.
diameter
operating
Receiver/NPN
Receiver/PNP
Emitter
dist. (S
n)
Make & break switching
Make & break switching
M18
20 m
Cable
ET 1820 NPAS
ET 1820 PPAS
ET 1820
M18
20 m
Plug
ET 1820 NPAS-1
ET 1820 PPAS-1
ET 1820-1
Note: Please order emitter and receiver separately.
Type Selection
ET 18 20 NPA S-1
Specifications Emitter
Rated operational volt. (UB)
10 to 40 VDC
(ripple included)
Ripple (Urpp)
≤ 10%
Supply current (Io)
≤ 20 mA
Protection
Reverse polarity,
short-circuits, transients
Light source
GaAIAs LED, 880 nm
Light type
Infrared, modulated
Optical angle
±2°
Indication
Supply ON
LED, green
Specifications Receiver
Rated operating dist. (Sn)
Up to 10 m
Sensitivity
270° single turn pot. meter
Temperature drift
0.6%/°C
Hysteresis (H) (Differential travel) 3 to 20%
Rated operational volt. (UB)
10 to 40 VDC (ripple included)
Ripple (Urpp)
Max. 10%
No-load supply current (Io)
Max. 12 mA (typ. 8 mA)
Min. operational current (Ie)
0.5 mA
OFF-state current (Ir)
Max. 100 µA (typ. 0)
Output current
Continuous (Ie)
Max. 200 mA
Short-time (I)
200 mA
Max. load capacity 100 nF
Voltage drop (Ud)
Max. 2.5 VDC
Protection
Reverse polarity,
short-circuit, transients
Optical angle
±2°
Ambient light
Max. 5,000 lux
Operating frequency (f)
Typ. 170 Hz
Response time
OFF-ON (t
ON)
Typ. 1.6 ms
ON-OFF (t
OFF)
Typ. 4.2 ms
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