Industry: instrumentation and hazardous-area equipment
Explosion-proof and intrinsically safe instrument housings
Instrumentation used in hazardous areas requires explosion-proof (Ex d) or intrinsically safe (Ex i) enclosures with precise machining of flange faces, sealing grooves, and threaded entries. Boyang machines aluminium and engineering-plastic housings for handheld scanners, gas detectors, process analysers, and field instruments.
Boyang machines aluminium and engineering-plastic housings for handheld scanners, gas detectors, process analysers, and field instruments used in hazardous areas. Critical features include flange-face flatness, sealing-groove dimensions, threaded cable-entry ports, and (for Ex d) flame-path machining to IEC 60079-1 tolerances.
Certification note: Ex / ATEX / IECEx certification is third-party and applies to the finished device, not to Boyang’s machined component. Boyang supplies parts to the customer’s certified design; the customer’s notified body performs the certification testing.
Typical parts and use cases
| Part type | Typical requirement |
|---|---|
| Handheld gas-detector enclosures | Engineering plastic (PC/ABS) with machined cable entries; impact-resistant. |
| Process-analyser chassis | Aluminium 6061 anodised; EMI/RFI gasket surfaces with Ra ≤0.8 (µm). |
| Field-transmitter housings | Aluminium or stainless 316L; threaded cover with O-ring groove. |
| Flame-path (Ex d) flanges and covers | Aluminium or stainless; flame-path surface finish per IEC 60079-1. |
| Intrinsic-safety (Ex i) enclosures | Engineering plastic; static-control finish optional. |
Material grades typically used
Common grades include:
aluminium-6061aluminium-7075stainless-316Lengineering-plastic-PCengineering-plastic-PC-ABSengineering-plastic-PBT
Capabilities used in this industry
- CNC turning
- CNC milling
- Anodising (Type II & III)
- Threading (NPT, M-series)
- CMM inspection
- Flame-path machining
Related case study
- Explosion-proof handheld scanner manufacturer — Plastic and aluminium housings machined for an Ex-rated scanner OEM.
Frequently asked questions
Is Boyang ATEX or IECEx certified?
No. ATEX / IECEx certification applies to the finished device, not to Boyang’s machined component. Boyang supplies parts to the customer’s certified design; the customer’s notified body performs certification.
What tolerance do you hold on flame-path surfaces?
Flame-path dimensions and surface finish follow the customer drawing. Typical tolerances are ±0.05 mm on flange flatness with Ra 0.8–3.2 (µm) on flame-path surfaces. Boyang holds flame-path gauges by arrangement.
Can you machine threaded cable entries to NPT or M-series?
Yes. NPT, M-series, and custom thread profiles are cut in-house. Gauges for customer-specified thread standards are accepted by arrangement.
Do you supply aluminium enclosures with anodised finish?
Yes. Type II anodising (5–25 µm, decorative) and Type III hard anodising (25–75 µm, wear-resistant) are both available.
What is the typical lead time for an Ex-rated housing prototype?
Prototype runs of 5–20 pieces typically take 7–14 days. Production runs follow the customer schedule.
Request a quotation for instrumentation and Ex-rated equipment
Send drawings in STEP, IGES, or PDF with tolerances and inspection points. We respond with material options, lead time, and unit price within 2 business days.