DQM High-Accuracy Measurement Safety Light Curtain

Measurement-grade safety light curtain for high-speed inspection and dimensional gauging. 36×36 mm robust body; resolutions 2.5/5/10/20/40/80 mm; typical detection distance 0.3–3 m (for 2.5 mm up to 0.3–2 m); ultra-fast response up to 0.5 ms (typ. ≤ 15 ms). Dual-channel NPN/PNP outputs, strong anti-interference against welding light/flicker, and convenient installation with aviation/M12 connectors.

View Detailed DQM SeriesDQM Video Demo
DQM measurement safety light curtain main image
DQM perimeter/zone guarding
Perimeter & zone guarding use cases
DQM high-speed detection demonstration
High-speed detection and counting applications
DQM appearance and mounting
36×36 mm body, standard brackets & cables
Product Highlights
  • High-accuracy measurement down to 2.5 mm resolution; stable repeatability for gauging and counting.
  • Ultra-fast response up to 0.5 ms (typ. ≤ 15 ms) for high-throughput lines and fast reject control.
  • Robust anti-interference against ambient light, flicker and welding glare; reliable blocking detection.
  • 36×36 mm compact body with aviation/M12 connectors and standard right-angle brackets.
  • Dual-channel NPN/PNP safety outputs; integrates with a safety relay/PLC for interlock/EDM.
  • Meets application requirements aligned with IEC 61496-1/-2; safety distance design per ISO 13855.

Values summarized from product manual. If any discrepancy exists, the official datasheet and delivered certificates prevail.

Resolution & Application Guide
Resolution (K)Typical Application
2.5 mmHigh-accuracy measurement / small-part counting
5 mmMeasurement / fine presence detection
10 mmGeneral palm/part detection
20 mmHand/part presence, logistics
40 mmHand/arm presence, aisle guarding
80 mmBody presence / wide opening detection

Protective height H = (n − 1) × K. Overall length L = P + H + J + 30 (15 mm allowance at each end). P/J depend on resolution; see tables below.

Technical Parameters (DQM Series)

CategoryItemTypical Value / OptionNotes
OpticalOperating principleThrough-beam infrared LED, modulatedEmitter/receiver pair; measurement-grade beam array
Resolution (K)2.5 / 5 / 10 / 20 / 40 / 80 mmMeasurement to wide presence detection
Protective height (H)H = (n − 1) × Kn = number of beams
Response timeUp to 0.5 ms (typ. ≤ 15 ms)Depends on beams and I/O load
Ambient light immunityHigh immunityAnti-flicker & anti-welding-glare design
Detection distance0.3–3 m (2.5 mm: 0.3–2 m)Longer distances available on request
Electrical / I/OSupplyDC 12/24 VReverse/over-voltage protection
Safety outputsDual-channel NPN / PNPNO/NC selectable per model
Channel capability≤ 200 mA (typ.)Transistor outputs (OSSD-like)
ProtectionShort / Over-current / Over-loadAuto recovery
IndicatorsPower / Run / BlockedFront indicators; optional numeric display
ConnectorM12 / Aviation plugStandard cables & brackets
SynchronizationOpticalReduced wiring, stable commissioning
Mechanical / EnvironmentBody section~36 × 36 mmAluminum housing
Overall lengthL = P + H + J + 30P/J by resolution
Ingress protectionIP65Dust-tight, water-jet resistant
Operating temp.−10 ~ +40 °CStorage −25 ~ +55 °C
HumidityOperating 35–85 %RHStorage 35–95 %RH
ComplianceStandardsIEC 61496-1/-2 (application)Safety distance per ISO 13855
CertificationsCE etc.Refer to delivered certificates
System integrationSafety relay / Safety PLCIndependent dual inputs; do not tie channels

DQM Series Detailed Specifications

Tables list typical beam counts (n) for each resolution (K) with protective height H and overall length L. Model format: DQM-K-NN-H.

K (mm)Beams nProtective Height H (mm)P/J (mm)Overall Length L (mm)Model ExampleDetection Distance
2.53277.51.25/25.75134.5DQM-2.5-32-77.50.3–2 m
2.54097.51.25/25.75154.5DQM-2.5-40-97.50.3–2 m
2.548117.51.25/25.75174.5DQM-2.5-48-117.50.3–2 m
2.556137.51.25/25.75194.5DQM-2.5-56-137.50.3–2 m
2.564157.51.25/25.75214.5DQM-2.5-64-157.50.3–2 m
2.572177.51.25/25.75234.5DQM-2.5-72-177.50.3–2 m
2.580197.51.25/25.75254.5DQM-2.5-80-197.50.3–2 m
2.588217.51.25/25.75274.5DQM-2.5-88-217.50.3–2 m
2.596237.51.25/25.75294.5DQM-2.5-96-237.50.3–2 m
2.5104257.51.25/25.75314.5DQM-2.5-104-257.50.3–2 m
2.5112277.51.25/25.75334.5DQM-2.5-112-277.50.3–2 m
2.5120297.51.25/25.75354.5DQM-2.5-120-297.50.3–2 m
2.5128317.51.25/25.75374.5DQM-2.5-128-317.50.3–2 m
2.5136337.51.25/25.75394.5DQM-2.5-136-337.50.3–2 m
2.5144357.51.25/25.75414.5DQM-2.5-144-357.50.3–2 m
2.5152377.51.25/25.75434.5DQM-2.5-152-377.50.3–2 m
2.5160397.51.25/25.75454.5DQM-2.5-160-397.50.3–2 m
2.5168417.51.25/25.75474.5DQM-2.5-168-417.50.3–2 m
2.5176437.51.25/25.75494.5DQM-2.5-176-437.50.3–2 m
2.5184457.51.25/25.75514.5DQM-2.5-184-457.50.3–2 m
2.5192477.51.25/25.75534.5DQM-2.5-192-477.50.3–2 m
2.5200497.51.25/25.75554.5DQM-2.5-200-497.50.3–2 m
2.5208517.51.25/25.75574.5DQM-2.5-208-517.50.3–2 m
2.5216537.51.25/25.75594.5DQM-2.5-216-537.50.3–2 m
2.5224557.51.25/25.75614.5DQM-2.5-224-557.50.3–2 m
2.5232577.51.25/25.75634.5DQM-2.5-232-577.50.3–2 m
2.5240597.51.25/25.75654.5DQM-2.5-240-597.50.3–2 m
2.5248617.51.25/25.75674.5DQM-2.5-248-617.50.3–2 m
2.5256637.51.25/25.75694.5DQM-2.5-256-637.50.3–2 m
2.5264657.51.25/25.75714.5DQM-2.5-264-657.50.3–2 m
2.5272677.51.25/25.75734.5DQM-2.5-272-677.50.3–2 m
2.5280697.51.25/25.75754.5DQM-2.5-280-697.50.3–2 m
2.5288717.51.25/25.75774.5DQM-2.5-288-717.50.3–2 m
2.5296737.51.25/25.75794.5DQM-2.5-296-737.50.3–2 m
2.5304757.51.25/25.75814.5DQM-2.5-304-757.50.3–2 m
2.5312777.51.25/25.75834.5DQM-2.5-312-777.50.3–2 m
2.5320797.51.25/25.75854.5DQM-2.5-320-797.50.3–2 m

Model example format: DQM-K-NN-H. For special ranges or bespoke heights, contact DAIDISIKE.

Typical Applications

  • High-speed measurement & counting: spraying/dispensing position check, dimensional gauging, volume/area presence, deviation detection.
  • Assembly and electronics lines: small-part detection with 2.5–5 mm resolutions; fast reject via 0.5 ms response.
  • Packaging & logistics: 10–40–80 mm for item presence, aisle and zone guarding.
  • General machinery: integrate with a safety relay/PLC for stop, interlock and EDM monitoring.

Safety distance reference (ISO 13855): S = K × T + C, where T is machine stopping time.

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