Choose an explosion-proof borescope by confirming that the exact instrument configuration is approved for the hazardous area where you will use it, then match its probe, lighting, imaging, and handling features to the inspection task. Start with the site’s required protection method, area or zone classification, gas or dust group, and temperature class; verify these against the product’s applicable certificates and documentation. A label or general “explosion-proof” claim alone is not enough to establish suitability.
Next, define what you need to inspect: the smallest access opening, insertion distance, target surface, viewing direction, and expected contamination. Give these details to the supplier before comparing models. This approach helps you avoid selecting a camera that fits the pipe but is not approved for the work area—or one that is appropriately protected but cannot produce a useful inspection image.
Ask your facility’s electrical, process-safety, or inspection team for the applicable area classification and equipment requirements. Depending on the location, these may specify a zone or division, gas or dust group, required protection method, and temperature class. Requirements can vary by jurisdiction and application, so do not infer approval from a product description or from another model in the same product family.
Request the certificate or conformity documentation for the precise borescope model and configuration under consideration. Check the product name, model code, accessories, permitted environment, and any conditions of use against the documents and your site’s purchasing criteria. If the instrument includes a separate monitor, charging unit, battery, or other accessory, ask whether each item is covered by the relevant approval or must remain outside the hazardous area.
Explosion protection is not a single universal specification. The required protection depends on the hazardous substance, the likelihood and duration of its presence, local rules, and the facility’s classification process. A borescope described as explosion-proof may still be unsuitable if its certified scope, temperature limits, or permitted conditions do not match the worksite.
Record the access opening’s minimum diameter and shape, the distance from the entry point to the target, and whether the route includes bends or obstructions. As planning examples, teams may compare probe diameters such as 2.8 mm, 4 mm, or 6 mm, but actual availability and performance vary by model. Select the narrowest probe that can provide the image quality and durability needed for the task, rather than choosing by diameter alone.
Insertion length should cover the required reach while leaving enough control for safe handling. For instance, a team might request options around 1 m, 3 m, or 5 m when defining a specification; these are comparison points, not a universal recommendation or a promise of available configurations. Confirm the usable insertion length, bend radius, and any restrictions on articulation with the supplier.
A forward-viewing probe is useful when the target lies directly ahead, while a side-viewing or articulating design may help inspect surfaces around a bend or inside a cavity. A steerable tip can improve positioning, but it also adds controls and operating considerations. Explain whether you need to inspect welds, internal corrosion, deposits, cracks, or component alignment so the supplier can discuss the appropriate optical and probe arrangement.
Dark, reflective, wet, or heavily soiled surfaces can make visual interpretation difficult. Ask about illumination control, focus or depth of field, image orientation, and whether the display remains readable in the expected working conditions. Request sample images or a demonstration using a comparable target where practical, and treat them as a reference rather than a guarantee of results in your own inspection environment.
For more information, please visit Coantec.
Check how the instrument records and transfers evidence. Confirm supported image or video formats, storage method, file naming, and whether reports can include inspection notes or location identifiers. If wireless functions are offered, establish whether they are permitted by your site procedures and approved for the intended area; do not assume that every accessory or communication feature is suitable for hazardous locations.
Ask for the specified operating temperature range, ingress protection details, battery information, and charging instructions for the exact configuration. These values should come from the product documentation, not from assumptions based on appearance or a related model. Confirm whether the battery may be changed or charged in the hazardous area, and follow the manufacturer’s stated restrictions.
Consider the operator’s gloves, viewing position, inspection duration, and access to controls. A bright display, clear button layout, and manageable probe stiffness can affect how consistently a team captures usable evidence. Where inspections are repeated, discuss cleaning, storage, routine checks, and any service procedures that apply to the probe and control unit.
A useful request for quotation should include the site classification, the substances involved, the inspection target, the minimum opening, estimated reach, and preferred image or reporting functions. Ask the supplier to identify the proposed model and configuration, provide applicable documentation, and state any limitations clearly. If a requirement is uncertain, have the facility’s safety team resolve it rather than asking the supplier to make an unsupported compliance judgment.
Also compare the support available after purchase. Ask about operator guidance, spare parts, repair arrangements, warranty terms, delivery estimates, and the documentation supplied with the instrument. These details help buyers assess the total sourcing fit without relying on a headline price alone.
At Coantec, we can review your inspection dimensions and operating requirements to help identify suitable borescope configurations for further evaluation. Share the hazardous-area classification and approval requirements provided by your site, together with the probe diameter, length, and imaging needs. We can then clarify the available options and provide the relevant product information for your technical and procurement review; final acceptance should remain with the responsible site authority.
The right explosion-proof borescope is the one whose exact configuration meets the documented hazardous-area requirements and can reach and clearly inspect the target. Begin with site approval criteria, then match the probe and imaging functions to the access conditions, and verify accessories, power arrangements, operating limits, and supplier documentation before purchase. This sequence reduces avoidable specification gaps without treating any single feature as proof of suitability.
Your next step is to prepare a short inspection brief with the area classification, target component, access dimensions, required reach, and evidence-recording needs. Send it to Coantec or another qualified supplier and request a model-specific technical review and documentation package. Have your safety or engineering team confirm the final configuration before placing the order or using the instrument in a hazardous area.
If you want to learn more, please visit our website How to choose an explosion-proof borescope?.