High-Precision Detection Safety Light Curtain QM Series with a Resolution of Up to 2.5 mm

The High-Precision QM series measurement-type light curtains are suitable for real-time product size and profile measurement, edge and center guiding, loop tension control, hole detection, part counting, and similar applications.

Typical Applications

Cardboard Box Dimension Measurement

Measures the length, width, and height of objects, and sends the data to the backend program for volume calculation.

Counting of Dropped Flat Small Objects

Utilizes a unique synchronized multi-beam infrared LED transmission and reception system for high-precision detection, creating accurate light cross patterns, with the ability to detect extremely small objects.

Wood Shape Dimension Measurement

Used for detecting the diameter of round wood, especially for wood surface processing. Before the wood enters the peeling equipment, its outer diameter is measured, and fixtures and peeling tools are adjusted based on the size. Accurate measurement helps ensure production stability and prevents equipment damage.

Wood Cutting

Measures the length of wood boards and detects any deformation. Boards that exceed the specified dimensions will be rejected. Length measurement can also determine if the board is warped, as warping can lead to changes in length.

Tire Classification

Two sets of measurement light curtains are used to detect the inner and outer diameters of tires, determining which conveyor belt the tire should be sent to. Tires that do not meet any of the specifications will be rejected and sent back for packaging.

Small Object Counting

During production, small screws are conveyed from the feeder bucket to plastic bags. The light curtain counts the dropped screws and monitors the quantity in each bag. The receiver’s output includes a 5-millisecond pulse stretcher (off-delay) to improve counting accuracy.

Punch Hole Detection

Detects missing punch holes on metal plates or holes in rolled materials during cutting.

Fabric Blanket Detection

When the fabric blanket passes through the measurement light curtain, the light curtain detects the edges of the blanket and woven clusters, then sends a signal to the control system for position correction.

Part Assembly Production with Indicator Lights

Safety light curtains are used to guide assembly workers in correctly picking up parts, preventing missing parts or assembly order errors.

Recommended Safety Light Curtain

High-precision Safety Light Curtain QM Series

The QM series light curtains are primarily used for object size detection, hole detection, and other applications. The detection accuracy can reach as low as 3.75 mm, with support for multiple parameter configurations. It features comprehensive self-diagnosis and fault monitoring functions. The digital display intuitively shows various operating statuses, making it easy for users to operate. The light curtain also supports lamp bead shielding through the host computer, and it has strong anti-interference capabilities, enabling stable operation in environments with significant interference from servo motors and other machinery.

Application of Safety Light Curtains in E-Commerce Conveyor Systems

Safety light curtains work in conjunction with high-speed, high-precision e-commerce small scales. When the light curtain detects a passing package, it outputs a signal. The next-stage equipment receives the signal and immediately executes the preset instructions.

How to Choose a Safety Light Curtain Model？

For example: QM262-10-2610-2BB

QM

262

—

10

—

2610

—

2

B

Series

Beams

Beam spacing

Protection height

Circuit of output

Signal Output Mode

Detection distance

04

2.5 mm

H = (n - 1) * K = (262 - 1) * 10

1: 1 Circuit of output

A: NPN NC

A: 0.3 - 3 m

06

5 mm

H = Protection height

B: PNP NC

B: 0.3 - 6 m

08

10 mm

n = Light beam

2: 2 Circuit of output

C: NPN NO

C: 0.3 - 10 m

10

20 mm

K = Beam spacing

D: PNP NO

D: 0.3 - 15 m

12

40 mm

U: 1-10V

E: 0.3 - 25 m

14

80 mm

1: 4-20mA

2.5 mm Beam Spacing
QM32-2.5-77.5	QM40-2.5-97.5	QM48-2.5-117.5	QM56-2.5-137.5	QM64-2.5-157.5	QM72-2.5-177.5	QM80-2.5-197.5	QM88-2.5-217.5
QM96-2.5-237.5	QM104-2.5-257.5	QM112-2.5-277.5	QM120-2.5-297.5	QM128-2.5-317.5	QM136-2.5-337.5	QM144-2.5-357.5	QM152-2.5-377.5
QM160-2.5-397.5	QM168-2.5-417.5	QM176-2.5-437.5	QM184-2.5-457.5	QM192-2.5-477.5	QM200-2.5-497.5	QM208-2.5-517.5	QM216-2.5-537.5
QM224-2.5-557.5	QM232-2.5-577.5	QM240-2.5-597.5	QM248-2.5-617.5	QM256-2.5-637.5	QM264-2.5-657.5	QM272-2.5-677.5	QM280-2.5-697.5
QM288-2.5-717.5	QM296-2.5-737.5	QM304-2.5-757.5	QM312-2.5-777.5	QM320-2.5-797.5
5 mm Beam Spacing
QM16-5-75	QM24-5-115	QM32-5-155	QM40-5-195	QM48-5-235	QM56-5-275	QM64-5-315	QM72-5-355
QM80-5-395	QM88-5-435	QM96-5-475	QM104-5-515	QM112-5-555	QM120-5-595	QM128-5-635	QM136-5-675
QM144-5-715	QM152-5-755	QM160-5-795	QM168-5-835	QM176-5-875	QM184-5-915	QM192-5-955	QM200-5-995
QM208-5-1035	QM216-5-1075	QM224-5-1115	QM232-5-1155	QM240-5-1195	QM248-5-1235	QM256-5-1275	QM264-5-1315
QM272-5-1355	QM280-5-1395	QM288-5-1435	QM296-5-1475	QM304-5-1515	QM312-5-1555	QM320-5-1595
10 mm Beam Spacing
QM08-10-70	QM10-10-90	QM12-10-110	QM14-10-130	QM16-10-150	QM18-10-170	QM20-10-190	QM22-10-210
QM24-10-230	QM26-10-250	QM28-10-270	QM30-10-290	QM32-10-310	QM34-10-330	QM36-10-350	QM38-10-370
QM40-10-390	QM42-10-410	QM44-10-430	QM46-10-450	QM48-10-470	QM50-10-490	QM52-10-510	QM54-10-530
QM56-10-550	QM58-10-570	QM60-10-590	QM62-10-610	QM64-10-630	QM66-10-650	QM68-10-670	QM70-10-690
QM72-10-710	QM74-10-730	QM76-10-750	QM78-10-770	QM80-10-790	QM82-10-810	QM84-10-830	QM86-10-850
QM88-10-870	QM90-10-890	QM92-10-910	QM94-10-930	QM96-10-950	QM98-10-970	QM100-10-990	QM102-10-1010
QM104-10-1030	QM106-10-1050	QM108-10-1070	QM110-10-1090	QM112-10-1110	QM114-10-1130	QM116-10-1150	QM118-10-1170
QM120-10-1190	QM122-10-1210	QM124-10-1230	QM126-10-1250	QM128-10-1270	QM130-10-1290	QM132-10-1310	QM134-10-1330
QM136-10-1350	QM138-10-1370	QM140-10-1390	QM142-10-1410	QM144-10-1430	QM146-10-1450	QM148-10-1470	QM150-10-1490
QM152-10-1510	QM154-10-1530	QM156-10-1550	QM158-10-1570	QM160-10-1590	QM162-10-1610	QM164-10-1630	QM166-10-1650
QM168-10-1670	QM170-10-1690	QM172-10-1710	QM174-10-1730	QM176-10-1750	QM178-10-1770	QM180-10-1790	QM182-10-1810
QM184-10-1830	QM186-10-1850	QM188-10-1870	QM190-10-1890	QM192-10-1910	QM194-10-1930	QM196-10-1950	QM198-10-1970
QM200-10-1990	QM202-10-2010	QM204-10-2030	QM206-10-2050	QM208-10-2070	QM210-10-2090	QM212-10-2110	QM214-10-2130
QM216-10-2150	QM218-10-2170	QM220-10-2190	QM222-10-2210	QM224-10-2230	QM226-10-2250	QM228-10-2270	QM230-10-2290
QM232-10-2310	QM234-10-2330	QM236-10-2350	QM238-10-2370	QM240-10-2390	QM242-10-2410	QM244-10-2430	QM246-10-2450
QM248-10-2470	QM250-10-2490	QM252-10-2510	QM254-10-2530	QM256-10-2550	QM258-10-2570	QM260-10-2590	QM262-10-2610
QM264-10-2630	QM266-10-2650	QM268-10-2670	QM270-10-2690	QM272-10-2710	QM274-10-2730	QM276-10-2750	QM278-10-2770
QM280-10-2790	QM282-10-2810	QM284-10-2830	QM286-10-2850	QM288-10-2870	QM290-10-2890	QM292-10-2910	QM294-10-2930
QM296-10-2950	QM298-10-2970	QM300-10-2990	QM302-10-3010	QM304-10-3030	QM306-10-3050	QM308-10-3070	QM310-10-3090
QM312-10-3110	QM314-10-3130	QM316-10-3150	QM318-10-3170	QM320-10-3190	QM322-10-3210	QM324-10-3230	QM326-10-3250
QM328-10-3270	QM330-10-3290	QM332-10-3310	QM334-10-3330	QM336-10-3350	QM338-10-3370	QM340-10-3390	QM342-10-3410
QM344-10-3430	QM346-10-3450	QM348-10-3470	QM350-10-3490	QM352-10-3510	QM354-10-3530	QM356-10-3550	QM358-10-3570
QM360-10-3590	QM362-10-3610	QM364-10-3630	QM366-10-3650	QM368-10-3670	QM370-10-3690	QM372-10-3710	QM374-10-3730
QM376-10-3750	QM378-10-3770	QM380-10-3790	QM382-10-3810	QM384-10-3830	QM386-10-3850	QM388-10-3870	QM390-10-3890
QM392-10-3910	QM394-10-3930	QM396-10-3950	QM398-10-3970	QM400-10-3990
20 mm Beam Spacing
QM04-20-60	QM06-20-100	QM08-20-140	QM10-20-180	QM12-20-220	QM14-20-260	QM16-20-300	QM18-20-340
QM20-20-380	QM22-20-420	QM24-20-460	QM26-20-500	QM28-20-540	QM30-20-580	QM32-20-620	QM34-20-660
QM36-20-700	QM38-20-740	QM40-20-780	QM42-20-820	QM44-20-860	QM46-20-900	QM48-20-940	QM50-20-980
QM52-20-1020	QM54-20-1060	QM56-20-1100	QM58-20-1140	QM60-20-1180	QM62-20-1220	QM64-20-1260	QM66-20-1300
QM68-20-1340	QM70-20-1380	QM72-20-1420	QM74-20-1460	QM76-20-1500	QM78-20-1540	QM80-20-1580	QM82-20-1620
QM84-20-1660	QM86-20-1700	QM88-20-1740	QM90-20-1780	QM92-20-1820	QM94-20-1860	QM96-20-1900	QM98-20-1940
QM100-20-1980
40 mm Beam Spacing
QM04-40-120	QM06-40-200	QM08-40-280	QM08-40-280	QM12-40-440	QM14-40-520	QM16-40-600	QM18-40-680
QM20-40-760	QM22-40-840	QM24-40-920	QM26-40-1000	QM28-40-1080	QM30-40-1160	QM32-40-1240	QM34-40-1320
QM36-40-1400	QM38-40-1480	QM40-40-1560	QM42-40-1640	QM44-40-1720	QM46-40-1800	QM48-40-1880	QM50-40-1960
QM52-40-2040	QM54-40-2120	QM56-40-2200	QM58-40-2280	QM60-40-2360	QM62-40-2440	QM64-40-2520	QM66-40-2600
QM68-40-2680	QM70-40-2760	QM72-40-2840	QM74-40-2920	QM76-40-3000	QM78-40-3080	QM80-40-3160	QM82-40-3240
QM84-40-3320	QM86-40-3400	QM88-40-3480	QM90-40-3560	QM92-40-3640	QM94-40-3720	QM96-40-3800	QM98-40-3880
QM100-40-3960
80 mm Beam Spacing
QM04-80-240	QM06-80-400	QM08-80-560	QM10-80-720	QM12-80-880	QM14-80-1040	QM16-80-1200	QM18-80-1360
QM20-80-1520	QM22-80-1680	QM24-80-1840	QM26-80-2000	QM28-80-2160	QM30-80-2320	QM32-80-2480	QM34-80-2640
QM36-80-2800	QM38-80-2960	QM40-80-3120	QM42-80-3280	QM44-80-3440	QM46-80-3600	QM48-80-3760	QM50-80-3920