Home / Pepperl Fuchs / Thru-Beam Sensors / Thru-beam sensor LD31/LV31/25/73c/76a/136

Thru-beam sensor LD31/LV31/25/73c/76a/136 — photo 1 of 4

Thru-beam sensor LD31/LV31/25/73c/76a/136 — photo 2 of 4

Thru-beam sensor LD31/LV31/25/73c/76a/136 — photo 3 of 4

Thru-beam sensor LD31/LV31/25/73c/76a/136 — photo 4 of 4

Available on request

Pepperl Fuchs LD31/LV31/25/73c/76a/136 – Thru-beam sensor

MPN: LD31/LV31/25/73c/76a/136 · Brand: Pepperl Fuchs

Price on request

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12-month warranty (new) · 3-month (used/refurbished)

30-day returns, no restocking fee on unused parts

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Quick facts

Availability	Confirmed on request
Category	Thru-Beam Sensors
Lifecycle	Active
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

When can LD31/LV31/25/73c/76a/136 be shipped?

LD31/LV31/25/73c/76a/136 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up LD31/LV31/25/73c/76a/136 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for LD31/LV31/25/73c/76a/136 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for LD31/LV31/25/73c/76a/136, subject to availability and destination.

• Highly visible LED

• Powerful push-pull output

• Compact and stable housing

• Protection class II

Thru-beam sensor, 30 m detection range, red light, light on, DC version, 2 push-pull outputs, emitter switch-off, M12 plug, Highly visible LED, Powerful push-pull output, Compact and stable housing, Protection class II

Specifications

System components

Order code (Pepperl+Fuchs part number)	187674
Emitter	LD31/73c/76a
Receiver	LV31/25/73c/136
Lifecycle	Active (current Pepperl+Fuchs product)

General specifications

Effective detection range	0 ... 30 m
Threshold detection range	43 m
Light source	LED
Light type	modulated visible red light , 630 nm
Alignment aid	LED yellow:1. LED illuminates: Sufficient light signal received, emitter and receiver alignment is correct 2. LED flashes: Reaching switching point 3. LED off: Light beam is interrupted or the alignment is out
Diameter of the light spot	approx. 800 mm at a distance of 30 m
Opening angle	Emitter: 1.5 ° , Receiver: 1.5 °
Ambient light limit	50000 Lux ; according to EN 60947-5-2

Functional safety related parameters

MTTFd	750 a
Mission Time (TM)	20 a
Diagnostic Coverage (DC)	0 %

Indicators/operating means

Operation indicator	LED green: power on
Function indicator	LED yellow:1. LED lit constantly: signal > 2 x switching point (operating reserve)2. LED flashes: signal between 1 x switching point and 2 x switching point3. LED off: signal < switching point

Electrical specifications

Operating voltage	10 ... 30 V DC UB
Ripple	10 %
No-load supply current	Emitter: ≤ 18 mA Receiver: ≤ 18 mA I0

Input

Test input

emitter deactivation at +UB

Output

Switching type	light-on
Signal output	2 push-pull (4 in 1) outputs, short-circuit protected, reverse polarity protected
Switching voltage	max. 30 V DC
Switching current	max. 100 mA
Voltage drop	≤ 1.5 V Ud
Switching frequency	≤ 250 Hz f
Response time	≤ 2 ms

Conformity

Product standard

EN 60947-5-2

Approvals and certificates

Protection class	II , rated voltage ≤ 250 V AC with pollution degree 1-2 according to IEC 60664-1 Output circuit basis insulation of input circuit according to EN 50178, rated insulation voltage 240 V AC
UL approval	cULus Listed, Class 2 Power Source, Type 1 enclosure
CCC approval	CCC approval / marking not required for products rated ≤36 V

Ambient conditions

Ambient temperature	-30 ... 55 °C (-22 ... 131 °F)
Storage temperature	-40 ... 70 °C (-40 ... 158 °F)

Mechanical specifications

Degree of protection	IP67
Connection	4-pin, M12 x 1 connector
Material: Housing	Polycarbonate
Material: Optical face	PMMA
Mass	Emitter: 24 g Receiver: 24 g
Dimensions: Height	62 mm
Dimensions: Width	18 mm
Dimensions: Depth	35 mm