Double sheet sensor
UDC-18GM50-400-3E0

Ultrasonic system for reliable detection of no, one, or two overlapping sheet materials, preferably papers
Short version
No TEACH-IN required
Function indicators visible from all directions
Insensitive to printing, colors, and shining surfaces
Material weight from 10 g/m² up to over 2000 g/m²
Very wide material spectrum, finest papers up to thin sheet metals as well as plastic- and metal foils
Perpendicular or inclined sensor mounting relative to the sheet plane possible

General specifications
Sensing range		20 ... 60 mm , optimal distance: 45 mm
Transducer frequency		395 kHz
Indicators/operating means
LED green		indication: single sheet detected
LED yellow		Indication: No sheet detected (Air)
LED red		indication: double sheet detected
Electrical specifications
Operating voltage		18 ... 30 V DC , ripple 10 %_SS
No-load supply current		< 50 mA
Input
Input type		Function input 0-level: -U_B ... -U_B + 1V 1-level: +U_B - 1 V ... +U_B
Pulse length		≥ 100 ms
Impedance		≥ 4 kΩ
Output
Output type		3 switch outputs NPN, NO
Rated operating current		3 x 100 mA , short-circuit/overload protected
Voltage drop		≤ 3 V
Switch-on delay		approx. 15 ms (shorter response time on request)
Switch-off delay		approx. 15 ms (shorter response time on request)
Pulse extension		min. 120 ms programmable
Approvals and certificates
UL approval		cULus Listed, General Purpose, Class 2 Power Source
CSA approval		cCSAus Listed, General Purpose, Class 2 Power Source
Ambient conditions
Ambient temperature		0 ... 60 °C (32 ... 140 °F)
Storage temperature		-40 ... 85 °C (-40 ... 185 °F)
Mechanical specifications
Connection type		cable PVC , 2 m
Core cross-section		0.14 mm²
Protection degree		IP67
Material
	Housing	nickel plated brass; plastic components: PBT
	Transducer	epoxy resin/hollow glass sphere mixture; polyurethane foam
Mass		135 g

Instruction leaflets	Language	File Type	File Size
Beipackzettel/Instruction leaflet	ALL	PDF	160 KB
Instructions, Short instructions, Safety information
Instruction Manual UDC-18GM50-400-...	ENG	PDF	401 KB
Betriebsanleitung UDC-18GM50-400-...	GER	PDF	267 KB

Certificates	Certificate No.	File Type	File Size
US CA UL General Purpose	E87056	LINK	---
Europe Pepperl+Fuchs 2004/108/EC (EMC) Declaration of Conformity	PF 08 CERT 1262	PDF	357 KB
US CA CSA	1007121 (LR96321-2)	PDF	101 KB

Double sheet sensorUDC-18GM50-400-3E0