Inspection Cameras Explained: A Simple Guide

Introduction

Hidden problems are often the more frustrating and can lead to significant costs and potential safety hazards. When a blockage, leak, or malfunction occurs in a concealed area, traditional troubleshooting methods quickly prove inadequate. This is where inspection cameras become indispensable tools, offering a non-invasive and efficient way to peer into regions that are otherwise impossible to see with the naked eye. This guide introduces you to the basics of these cameras, covering their significance, operating principle, standard types, and key selection parameters to help you make an informed decision.

What is an Inspection Camera? Definition and Core Functionality

An inspection camera, also known as a borescope or a snake camera, is a specialised optical instrument built to inspect inaccessible spaces. These exploration cameras feature a miniature camera, LED lights, and a probe that is inserted into confined spaces to transmit live video footage or still images. The fundamental function of an inspection camera is to provide visual access to hidden areas, enabling detailed inspections without the need for disassembling complex equipment. Also, the functionality of these diagnostic tools revolves around visual inspection, allowing users to observe, record, and analyse conditions in various applications.

How Do Inspection Cameras Work?

Inspection cameras (also called endoscopes) operate by transmitting video from a tiny camera—usually mounted on the end of a flexible cable—back to a display screen. The camera head, cable, adjustable LED lights, and a display monitor together contribute to the functionality of an inspection camera. These devices capture real-time video or still images, which are displayed on a screen or transmitted electronically to a connected device. Furthermore, the screen can be a built-in LCD on the camera unit, a smartphone, a tablet, or a computer monitor. Some advanced models even include features like zoom, image rotation, and the ability to record footage for later analysis.

Why Do You Need Inspection Cameras? A Glance At Their Significance

Inspection cameras have become indispensable tools across various industries and in everyday problem-solving. Their significance lies in their ability to provide visual information without the need for destructive disassembly, saving time, and money. In addition, from identifying blockages in plumbing to inspecting the internal integrity of machinery, these cameras enable precise diagnosis and targeted intervention. An inspection camera also holds prominent significance as it enhances safety, downtime, and prevents costly errors by identifying issues quickly and precisely. Ultimately, borescopes empower users with the knowledge to make informed decisions, preventing minor issues from escalating into expensive and time-consuming problems.

The Power of LEDs in Inspection Cameras

The integration of LEDs into inspection cameras has revolutionised the field. Light-emitting diodes provide unprecedented clarity and versatility in examining inaccessible or dimly lit areas. Unlike traditional lighting sources, LEDs offer superior brightness, true-colour rendition, and remarkable energy efficiency, all of which significantly extend battery life for prolonged inspections. Their compact size and durability of an LED ensures consistent performance in harsh industrial environments. In essence, LEDs elevate the performance of these compact cameras by transforming low-light challenges into clear, actionable insights.

Different Types of Inspection Cameras Explained: A Brief Overview

Depending on the task or environment, inspection cameras come in various configurations. They are mainly classified into multiple forms based on their intended use, designs, and power sources. Typically, an inspection camera can be categorised into two main types:

Borescopes/Endoscopes (General Term)

The “borescopes” is an umbrella term for most inspection cameras that aren’t specifically for medical use. They typically comprise a flexible or rigid tube with a camera at the end, often equipped with LED lights for illumination. However, the video feed displays on a screen, which can be integrated into the unit, on a separate monitor, or a smartphone/tablet. Borescopes are further classified into flexible borescopes (snake cameras/fiberscopes), rigid borescopes, USB inspection cameras, industrial borescopes, and articulating borescopes.

Specialised Inspection Cameras

Beyond the general borescope categories, several specialised types cater to specific needs. These models are engineered for precise and efficient inspection tasks in challenging environments. Specialised cameras include:

• Push Cameras – These compact cameras can be manually pushed through narrow passages to inspect small, confined spaces like pipes and drains.
• Crawler Cameras – These are motorised, wheeled units designed to inspect large pipelines and sewer systems.
• Thermal Imaging Cameras (Infrared Cameras) – These cameras detect heat signatures and temperature variations in electrical and mechanical systems.
• Optical Gas Imaging (OGI) Cameras – They visualise invisible gases like methane or carbon monoxide in petrochemical, gas, and industrial safety inspections.
• Drone Inspection Systems – These drone-based cameras use high-resolution cameras and sensors to assess hard-to-reach areas. Moreover, they offer efficient aerial surveillance without scaffolding.
• ROV Inspection Systems (Remotely Operated Vehicles) – These are remotely operated cameras that provide live video and data from submerged environments.
• Well Cameras – A well camera, as the name suggests, is specifically designed to provide real-time visuals of groundwater conditions in deep wells and boreholes.
• Handheld Inspection Cameras – These are portable cameras that help users inspect tight or inaccessible areas. They are easy to use and lightweight.
• Wireless Inspection Cameras – These cameras transmit real-time footage to a smartphone or monitor without requiring tethered cables.

Important Features to Consider When Buying an Inspection Camera

When choosing an inspection camera, consider the following essential features to meet your needs and budget:

• Camera Type
• Intended Application
• Camera Head Diameter
• Cable Length and Flexibility
• Display Quality and Size
• Lighting
• Battery Life
• Durability and Water Resistance
• Recording Capabilities
• Brand and Budget.

Final Thoughts

Inspection cameras are powerful, versatile tools that offer invaluable insights into the unseen. By leveraging this technology, users can save time, effort, and ensure the integrity of a wide range of systems. Whether you’re a mechanic diagnosing an engine fault, a plumber tackling a drainage issue, or a homeowner exploring hidden corners, an inspection camera provides clear, safe, and efficient visibility.