PNP NC High Frequency Ultrasonic Transducer Double Sheet Sensor

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US $400-450 / Piece | 10 Piece/Pieces (Min. Order)
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Quick Details
Place of Origin:
Zhejiang, China (Mainland)
Brand Name:
Model Number:
ultrasonic sensor
Ultrasonic Sensor
Analog Sensor
Ultrasonic Transducer
1 Year
2016 Top
Home Automation
Protection degree:
Packaging & Delivery
Packaging Details
Export standard carton box
Delivery Time
3-7 days after get payment

PNP NC High Frequency Ultrasonic Transducer Double Sheet Sensor




  •  Ultrasonic system for reliable detection of no, one, or two overlapping sheet materials, preferably papers
    • No TEACH-IN required

    • Function indicators visible from all directions
    • Insensitive to printing, colors, and shining surfaces
    • Material weight from 10 g/m 2 up to over 2000 g/m 2
    • 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
    • Programmable
Technic data


General specifications
Sensing range20 ... 60 mm , optimal distance: 45 mm
Transducer frequency395 kHz
Indicators/operating means
LED greenindication: single sheet detected
LED yellowIndication: No sheet detected (Air)
LED redindication: double sheet detected
Electrical specifications
Operating voltage U b18 ... 30 V DC , ripple 10 % SS
No-load supply current I 0< 80 mA
Time delay before availability t v< 500 ms
Input typeFunction input
0-level: -U B ... -U B + 1V
1-level: +U B - 1 V ... +U B
Pulse length≥ 100 ms
Impedance≥ 4 kΩ
Output type  3 switch outputs NPN, NC
Rated operating current I e3 × 100 mA , short-circuit/overload protected
Voltage drop U d≤ 2 V
Switch-on delay T onapprox. 15 ms (shorter response time on request)
Switch-off delay T offapprox. 15 ms (shorter response time on request)
Pulse extensionmin. 120 ms programmable
Ambient conditions
Ambient temperature0 ... 60 °C (32 ... 140 °F)
Storage temperature-40 ... 70 °C (-40 ... 158 °F)
Mechanical specifications
Connection typecable PVC , 2 m
Core cross-section0.14 mm
Protection degreeIP67
Housingnickel plated brass; plastic components: PBT
Transducerepoxy resin/hollow glass sphere mixture; polyurethane foam
Mass150 g
General information
Supplementary information  Switch settings of the external programming adapter:
"output load": pull-up
"output logic": inv





Additional information          




Product Description

 Description of sensor functions
The ultrasonic double sheet monitor is used for double sheet detection in all situations in which the automatic distinction between double and single sheets is required in order to protect machines or avoid waste production. The double-sheet monitor is based on the ultrasonic through-beam principle. The following can be detected:
- No sheet, i.e. air,
- Individual sheet
- Double sheet
A microprocessor system evaluates the signals. The appropriate switch outputs are set as a result of the evaluation. Changes in ambient conditions such as temperature and humidity are compensated for automatically. The interface electronics is integrated into a compact M18 metal housing together with a sensor head.


Switching on
The sensor is equipped with 6 connections. The functionality of the connections is described in the following table. The function input
(PK) is used to assign parameters to the sensor. (See Output pulse extension, Alignment aid and Program selection). During normal
operation, the function input must always be securely connected with +U B or -U B , to avoid possible interference or improper functionality.

ColourSwitching on Comments
WHSwitch output for single sheetsPulse width corresponds to the event
BKSwitch output for double sheetsPulse width corresponds to the event
GYSwitch output for airPulse width corresponds to the event
PK-U B /+U BFunction input for parameter assignment/
pulse prolongation


Normal mode
The sensor is working in normal mode if the function input (PK) is applied to -U B or +U B when the power source (Power-On) is supplied,
as shown in the output pulse extension table (see below).
LED yellow:      Detection of air
LED green:      Detection of single sheets
LED red:          Detection of double sheets
Switch outputs:
The switch outputs are only active in normal operation!
White:      WH     Single sheet output
Black:      BK      Double sheet output
Gray:       GY       Air output


Procedure for assigning parameters
It is possible to switch to additional parameter assignment modes from the display mode:
         Alignment mode -->
         Program selection mode -->
         Alignment aid mode --> (for checking)
When the function input (PK) is applied to -U B (for > 500 ms), the mode changes. When the "Program selection“ mode is active, swit-
ching on function input (PK) on to +U B (for > 500 ms) selects the next program level.
Disconnecting the power supply causes the system to exit the current mode with the selected program change.
The switch outputs are not active while parameters are being assigned to the sensor!


Amplitude control
During installation, the amplitude control can be used to check whether the ultrasonic amplitude at the receiver is sufficient. If the transmitter is not aligned properly in relation to the receiver, maximum sound energy is not transmitted to the receiver, which may result in the incorrect detection of materials.
When the sensor detects an area of air (yellow LED lights up), the UDC begins to display the strength of the measured amplitude signal:
- if the signal is weak, the yellow LED flashes at low frequency
- the flashing frequency increases in line with the signal strength
- the yellow LED lights up continuously when the signal strength is sufficient.
The single sheet function (green LED) and double sheet function (red LED) are now active. This can be used to check the correct
function of the sensor.
Program selection
In the program selection mode, the current program is displayed by the green LED (number of flashing pulses = program number).
Applying the adjustment input (PK) to +U B (for > 500 ms) causes the next program to be selected in cyclic sequence (program 1 follows through to program 4).


A complete device consists of an ultrasonic emitter and an evaluation unit with an ultrasonic emitter. The sensor heads are optimally
adjusted to each other when they leave the factory. Therefore, they must not be used separately or exchanged with other devices of
the same type. The plug connector on the emitter/receiver connection cable is only intended to be used for easier mounting, not to
replace units.

Very light papers (for example handkerchiefs) or perforated papers are not always suitable for double sheet detection because of their
physical characteristics.

If two or more double sheet controls are used in the immediate vicinity of each other, there may be mutual interference between them,
which can result in improper functionality of the devices. Mutual interference can be prevented by introducing suitable countermeasures
when planning systems.

When installing, care has to be taken that the ultrasonic signal cannot pass around the material that is to be detected, due to
multiple reflections. This can happen if large surfaces are present at right angles to the direction of sound propagation. This can
be the case if unsuitable mounting brackets are used, or if assemblies with large surface are part of the machine. In the latter
case such machine parts should be covered by sound absorbing material or a different location for the installation should be

Company Information

      Yueqing Winston Electric Co., Ltd. is not only an exporting company, but also a professional manufacturer in China. We have our own production base. The products we professionally deal with are Switching power supplies, Sensors, Thermostat, Heater, AC contactors, Circuit breakers and others.


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