Product DescriptionPM18 series proximity sensor is one metal shell
cylindrical photocell sensor; It includes a through-beam type,
polarized reflective type, and diffused type.PM18T opposed type
photoelectric sensor is our most popular model used at turnstiles.
PM18T photoelectric sensor installed at the turnstile gate entrance
is used to detect whether people intrude into the turnstile gate.
When swiping the card outside the yellow line, there is no object
at the gate entrance, and the sensor signal is standard, the wing
door will open; if the person goes inside the yellow line, the
sensor signal at the gate entrance changes, even if swiping the
card, the wing door will not open. The purpose of this design is to
prevent the opening and closing of the wing gate when swiping the
card at a short distance, which may cause potential safety hazards,
and also prevent ticket evasion. Features1. Product detection
distance 20m2. With reverse polarity protection, overcurrent, and
overvoltage protection functions3. Epoxy sealing4. Resistant to
harsh environments ProductSeriesProductModelSupply
VoltageSensing
DistanceHousingOutputModeActionModePM18TPM18T-2ND10~30V
DC20mstainless steelNPNDark OnPM18T-2NLNPNLight OnPM18T-2PDPNPDark
On PM18T-2PL PNPLight On Photoelectric
sensorPM18T-2NDDetection TypeOpposed typeDetecting ObjectMin Φ18mm
opaque objectDetecting Distance20mSupply Voltage10~30V DCNo-load
CurrentMax.40mAResponse TimeMax.15msLight SourceInfrared
LED(modulated)Action ModeDark OnControl OutputNPN open
collectorIndicatorPower indicator: Green Action
indicator: RedCircuit ProtectionReverse polarity protection,
short circuit protection, over-voltage protectionAmbient
BrightnessSunlight: Max.11000lx; Fluorescent:Max.3000lxAmbient
Temperature-20~+60ºC(Non-freezing),Storage:-25~+75ºCAmbient
Humidity0~90%RHMaterialHousing: Cr plated
Cu, Lens: PMMACableEmitter:blackΦ5. 2×0.3mm ²;
Receiver: GreyΦ5. 3×0.2mm ²Protection
RateIP67AccessoryScrew Photoelectric sensorPM18T-2NLDetection
TypeOpposed typeDetecting ObjectMin Φ18mm opaque objectDetecting
Distance20mSupply Voltage10~30V DCNo-load CurrentMax.40mAResponse
TimeMax.15msLight SourceInfrared LED(modulated)Action ModeLight
OnControl OutputNPN open collectorIndicatorPower
indicator: Green Action indicator: RedCircuit
ProtectionReverse polarity protection, short circuit protection,
over-voltage protectionAmbient
BrightnessSunlight: Max.11000lx;Fluorescent: Max.3000lxAmbient
Temperature-20~+60ºC(Non-freezing),Storage:-25~+75ºCAmbient
Humidity0~90%RHMaterialHousing: Cr plated
Cu, Lens: PMMACableEmitter:blackΦ5. 2×0.3mm ²;
Receiver: GreyΦ5. 3×0.2mm ²Protection
RateIP67AccessoryScrewProduct ApplicationCertificationsPackaging &
ShippingProduct self-inspection steps1. Detect whether the
installation position of the object and the proximity sensor has
deviated, slack, or skewed; whether there is slack, poor contact,
or disconnection in the wiring and connection parts2. Whether there
is adhesion or accumulation of metal dust, etc.3. Is there any
abnormality in using temperature conditions and environmental
conditions?4. Set whether the flashing of the display lamp type is
abnormal.If you must be careful not to disassemble and repair by
yourself during the inspection, and to easily find out the fault,
you can investigate the operating state of the sensor through the
connection with the portable detector, and then repair it according
to the situation.In order to make the photoelectric sensor work
stably for a long time, it should be regularly checked with the
same contents as the general control equipment to maintain its
long-term function. The photoelectric sensor can also be stocked.
Once a problem with the photoelectric sensor is found, we can
replace it in time without affecting the use of the sensor.What is
a photoelectric sensor?Photoelectric sensors, also known as photo
eyes, emit a beam of light that is used to detect the presence or
absence of items and equipment or changes in surface conditions.
When the emitted light is interrupted or reflected by the object,
the change in light patterns is measured by a receiver and the
target object or surface is recognized. Photoelectric sensors are
very common in industrial manufacturing, such as material handling,
packaging, food and beverage, medical, and many others.Depending on
the style selected, they can be used with or without a reflector,
and be self-contained, long-range, heavy-duty, or compact. There
are much different housing and mounting options to offer a correct
fit that meets the demands of each application. They perform a wide
variety of tasks and some of them can even be used in harsh
environments. Company ProfileTianjin G-TEK sensor
technology co..ltd is indicated in providing intelligent sensor
products and customized solutions for logistics automation, factory
automation and process automation. The predecessor of the company
is Tianjin G-TEK automation technology Co.,ltd, a professional
sensor manufacture
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