Explosion-proof Safety Light Curtain (Custom / FB Series)
Custom Ex-rated housing built around your existing DAIDISIKE light curtain for hazardous-area machine guarding.
🔍 Click to enlarge · 1/10Technical Specifications
| Series | FB (Explosion-proof Custom) |
|---|---|
| Explosion Protection Standard | Engineered to GB3836-2010 (Chinese explosive-atmosphere equipment standard) |
| Explosion Protection Design Marking | Designed to Ex nR IIC T6 Gc / Ex tb IIIC T80 degrees C (per GB3836-2010). A valid explosion-protection certificate for the specific hazardous zone must be confirmed before use — certification documents are available on request. |
| Enclosure Material | Welded steel plate, shot-blasted, electrostatic powder coating, dedicated two-tone color |
| Enclosure Cross-section | 80mm x 80mm (tolerance ±0.5mm) |
| Cable Entry | G1/2, NPT1/2, DN15 explosion-proof gland; max cable OD 7-10mm (4-fen) |
| Standard Conduit | 2m explosion-proof flexible conduit |
| Sealing Rubber | Oil-resistant, corrosion-resistant national standard RTY-III |
| Installation | Wall-mounted, outdoor installation (rain cover optional) |
| 8-beam Example Housing Length | 1430mm overall / 1410mm inner, mounting hole span 1250mm |
| 8-beam Example Housing Height | 110mm |
| 8-beam Example Mounting | M6 mounting studs, Ø8mm mounting holes, 100mm end brackets each side |
Overview
DAIDISIKE's explosion-proof safety light curtain is a build-to-order product: the optical sensing core from an existing DAIDISIKE safety light curtain series (DQA, DQB, DQBK, DQC, DQE, DQL, DQM, DQQ, DQT, DQZ) is rehoused in a welded-steel explosion-proof enclosure, so machine builders and plant engineers working in hazardous, flammable-gas, or combustible-dust zones can keep familiar optical performance while adding explosion protection. Model numbers follow the customer's existing on-site light curtain configuration, for example FB-DQA08-200-1400, so the unit drops into an already-planned machine guarding layout.
The explosion-proof enclosure is welded from steel plate, shot-blasted and electrostatically powder-coated in a dedicated two-tone finish, and is engineered to GB3836-2010 with an Ex nR IIC T6 Gc, Ex tb IIIC T80°C protection marking. Cabling exits through a G1/2 (NPT1/2, DN15) explosion-proof gland rated for cable outer diameters of 7-10mm, and each unit ships with a standard 2m explosion-proof flexible conduit for the wiring run out of the hazardous area.
Features & Benefits
Same Optics, Explosion-proof Housing
Keeps the DAIDISIKE optical engine from your existing DQA/DQB/DQC/DQE/DQT/DQZ light curtain, just rehoused for hazardous areas, so the beam performance you already know carries over into the Ex-rated build.
Built to GB3836-2010
The welded-steel enclosure is engineered to GB3836-2010 with an Ex nR IIC T6 Gc, Ex tb IIIC T80°C protection marking, aimed at machine guarding in flammable-gas or combustible-dust classified areas.
Ready-to-Wire Cable Entry
A G1/2 (NPT1/2, DN15) explosion-proof cable gland accepts 7-10mm cable and ships with a standard 2m explosion-proof flexible conduit, so the wiring run out of the hazardous zone is already sorted.
Named to Match Your Site
Model numbers follow your existing on-site light curtain (e.g. FB-DQA08-200-1400), so procurement and installation drawings line up directly with what's already on the machine.
Weatherproof Finish
Shot-blasted, electrostatically powder-coated dual-color steel housing suited to wall-mounted outdoor installation, with an optional rain cover for extra protection.
Applications
Models & Ordering Information
Custom Naming Convention
Compatible Base Light Curtain Series
How to Select
- Tell us your existing on-site light curtain model (series, beam count, resolution, protection height) so the explosion-proof housing and internal optics can be matched, e.g. FB-DQA08-200-1400.
- Confirm the hazardous-area classification required for your site so the Ex nR IIC T6 Gc, Ex tb IIIC T80°C marking can be checked against local requirements.
- Specify the cable run length and routing if you need more than the standard 2m explosion-proof flexible conduit.
- Add an optional rain cover if the unit will be installed outdoors and exposed to direct weather.
📘 Need the full method? How to Choose a Safety Light Curtain · Type 2 vs Type 4 Safety Light Curtains
When NOT to specify the Explosion-proof — and what to use instead
You need a stock, off-the-shelf light curtain
Why not: This is a build-to-order product: an explosion-protection steel enclosure is engineered and welded around a standard DAIDISIKE curtain to order. It is quoted per project, not held in stock, and lead time reflects the custom fabrication.
Use instead: A standard through-beam safety light curtain (DQC, DQA, DQT or DQT4) for ordinary, non-hazardous areas.
Deploying in a hazardous (explosive) atmosphere without confirming the zone certificate
Why not: The enclosure is engineered to GB3836-2010 with an Ex nR IIC T6 Gc / Ex tb IIIC T80 degrees C design marking, but an Ex design marking is not a substitute for a valid explosion-protection certificate covering your specific gas/dust zone, temperature class and region (GB3836 in China; ATEX / IECEx elsewhere). Installing Ex-marked equipment in an explosive atmosphere without the matching certificate is unsafe and, in most jurisdictions, unlawful.
Use instead: Confirm the applicable zone, gas/dust group and temperature class with us in writing, and obtain the explosion-protection certificate for that configuration, before ordering or installing.
The hazardous area requires ATEX or IECEx marking rather than GB3836
Why not: The published design basis is the Chinese GB3836-2010 standard. ATEX (EU) and IECEx (international) are separate certification schemes.
Use instead: Tell us the destination market and its required scheme; do not assume GB3836 is accepted in an ATEX or IECEx jurisdiction without written confirmation.
High-pressure washdown or continuous immersion
Why not: The enclosure is engineered for wall-mounted outdoor installation (rain cover optional); its water-ingress rating for jetting or immersion is not published.
Use instead: Confirm the enclosure's IP rating for your wash regime with us, or use the DQR / DQRF waterproof series in non-hazardous wet areas.
Specifications we do not publish yet
We only publish a figure once we are confident it is true. The items below are still being validated through further testing and real-world customer feedback, so for now we would rather leave them open than guess. If one of them matters to your design, ask us for the latest validated status.
- Explosion-protection certificate number, issuing body and exact scope (zones, gas/dust groups, temperature class) for the Ex nR IIC T6 Gc / Ex tb IIIC T80 degrees C design. Certification documents are available on request.
- Whether ATEX and/or IECEx certification exists in addition to the GB3836-2010 design basis.
- The IP (water/dust ingress) rating of the explosion-proof enclosure.
- PFHd, MTTFd and PL / Category of the enclosed safety curtain as an assembled Ex unit.
- Which curtain series and resolutions can be enclosed, and the resulting sensing distance and response time inside the Ex housing.
- Operating temperature range of the assembled Ex unit.
- Lead time and minimum order quantity for the build-to-order enclosure.
Frequently Asked Questions
How is the FB explosion-proof model number decided?
What explosion-proof standard is the housing built to?
Can I get explosion-proof certification documents?
What size cable can I use?
Can this be installed outdoors?
Which base light curtain series can be rehoused as an FB explosion-proof unit?
Works Well Together
On the same machine or line, Explosion-proof is typically ordered together with: Safety Relays · Safety Door Locks & Switches · Press & Press Brake Protection
DA31 Emergency-Stop Safety Relay Module
Ultra-slim 22.6 mm Category 4/PL e/SIL 3 safety relay with dual-channel PNP/NPN input and a solid-state status output.
DX-C1 Magnetic Coded Safety Switch
Non-contact coded-magnet safety switch with 17 mm sensing range and high misalignment tolerance for guard doors.
DKE-L3 Press Brake Laser Protection
Ram-mounted laser guarding that tracks the punch tip on press brakes and shears without blocking hand-fed work.
Related Products in Safety Light Curtains
DCE Automation Safety Light Curtain
Compact through-beam safety light curtain in a 30 x 30 mm housing: 10/20/30/40 mm beam pitch, up to 72 beams, 0.3-3 m or 0.3-6 m sensing distance, NPN/PNP output. Designed to the Type 4 architecture of IEC 61496-1/-3 and Category 4 (PLd) of ISO 13849-1.
DD / DDOF Single-Sided Area Light Curtain
One housing, no far-side receiver: order DD for diffuse sensing to 2000 mm, or DDOF for per-beam TOF ranging to 4000 mm with zero dead zone and one-key distance teaching. 48 standard models, 4-50 beams.
DQA Long-distance Safety Light Curtain
Long-range through-beam safety light curtain for large presses, hydraulic and shearing machines: a transmitter/receiver pair spanning up to 40 m, in 8 beam pitches from 10 to 200 mm, with NPN, PNP or relay output and a selectable single- or dual-output signal. Designed to the Type 4 architecture of IEC 61496 and Category 4 of ISO 13849-1.
DQB Ultra-thin (Side-emitting) Safety Light Curtain
Ultra-thin side-emitting safety light curtain with a 15 x 30 mm cross-section for gaps too narrow for standard units.