Surveying Data Collectors: Indepth Buying Guide

The world of surveying is transforming at a rapid pace. New technologies are reshaping the way we capture, analyse, and utilise spatial data, and at the heart of this process sits the data collector – a portable powerhouse that bridges the gap between field and office. This versatile device is essential for surveyors to collect, process, and visualise information with unprecedented accuracy and speed.

In a field where every millimetre matters, a data collector is an essential partner for success. Whether you’re mapping terrain, staking out construction sites, or managing complex infrastructure projects, it ensures your measurements are secure, organised, and ready to be turned into actionable insights.

In this post, we’ll cover everything you need to know about data collectors. We’ll discuss what they are, how they work, their benefits, and how to choose the right one for your needs. By the end, you’ll have a deeper understanding of how this powerful technology can boost efficiency, accuracy, and productivity in the field.

Data collectors are rugged, field-ready handheld computers or tablets built specifically for the rigours of surveying tasks. They run specialised surveying software designed to streamline data collection, perform essential calculations, and provide basic mapping functions while you’re out on a job site. A key aspect of their functionality is their ability to communicate seamlessly with GNSS receivers, total stations, and other surveying equipment.

Gone are the days of carrying field books, radios, calculators, and other clutter around a site to manually write down measurements. Data collectors have condensed all these tools into a single device, streamlining modern workflows whilst also helping ensure accuracy.

This makes them one of the most versatile tools in a surveyor’s arsenal, ensuring they can be used to optimise a wide range of surveying activities. Data collectors usually feature WiFi, Bluetooth, mobile, and radio capabilities for receiving corrections signals and transferring data between the field and office. This means they can sit at the centre of your surveying communications, gathering and transmitting data between devices and teams with ease.

 

One of the reasons that data collectors have become a fundamental tool for surveyors is their sheer versatility. Whatever type of survey you’re conducting, whatever the specific requirements of your project, this instrument can help make your workflow more efficient and improve the accuracy of your results.

Let’s look more closely at some of the key surveying activities that data collectors can improve, as well as the more advanced capabilities they provide.

Total Station Surveys

Mechanical total stations are the foundation of modern surveying. The combination of speed and precision they offer has revolutionised surveying workflows by enabling surveyors to collect extensive, highly accurate data in record time. And the innovation of robotic total stations has developed this even further, with automated capabilities and remote-control options for even greater flexibility.

A data collector plays a key role in enabling streamlined total station surveying for teams. It provides real-time data processing and integration for your total station surveys in a simple, user-friendly and highly portable way. This means you can perform basic calculations while still on-site and identify any errors before you head back to the office.

More advanced data collectors also offer real-time visualisation to help you verify data integrity, identify any inconsistencies, and ensure you’re capturing all the necessary points. Data collectors even have the capacity to control your robotic total station remotely, further streamlining your surveying activities.

Field Calculation and Data Management

Beyond their specific strengths in total station and GNSS surveys, data collectors offer a range of functionality that is valuable across all surveying activities. In short, they act as a powerful field computer and data management hub that you can carry with you on any job.

Data collectors transform how surveyors work by bringing the power of computation into the field. Traditionally, survey data would have to be brought back to the office, where specialised software can then be used to perform calculations, adjustments, and analysis. With a data collector, many of these computations can happen directly on the device. This allows surveyors to minimise the potential for errors during data transfer and make more informed decisions on the spot.

Furthermore, data collectors help you to organise projects, manage data files efficiently, and attribute information (like point descriptions or classifications) directly in the field. This translates to smoother workflows, minimised errors, and valuable time saved on data processing back at the office.

Mapping and visualisation

Cutting-edge data collectors don’t just provide handy data recording and processing functions — they add advanced mapping and visualisation tools, too. This visualisation goes beyond just displaying points – they allow you to overlay both GNSS and total station points on maps or aerial imagery. Imagine seeing your survey progress in real time, providing immediate context and verification that data is being collected accurately and in the right locations.

Some data collectors go even further, offering CAD integration. This seamless connection lets you import digital site plans directly onto the device, allowing you to compare your survey data against as-designed features. Additionally, these data collectors enable you to export your field survey data in CAD-compatible formats, streamlining handoffs to engineers and designers back in the office.

Explore the SEP range of data collectors, designed to enhance the efficiency and accuracy of your surveying workflows. These devices streamline data collection in the field by integrating with total stations, GPS systems, and other survey instruments, offering intuitive interfaces and powerful data management capabilities.

Data collectors have a wide range of uses across virtually every aspect of your on-site surveying work. With a single investment, you’ll secure a variety of benefits, including:

• Enhanced productivity. These handheld devices eliminate time-consuming manual data entry and field notes when on site. Direct data recording and integrated calculations significantly boost efficiency, allowing you to complete more work in less time.
• Increased accuracy. By automating data collection and performing calculations in the field, data collectors greatly reduce the potential for human error. This translates to higher-quality survey data with fewer mistakes.
• Real-time feedback. Data collectors provide instant visualisation of survey progress and calculations. This allows you to identify and rectify errors on the spot, ensuring data integrity and preventing costly surprises back in the office.
• Improved collaboration. Many data collectors offer cloud-based data sharing or real-time connectivity. This seamless communication between field crews and office personnel enables quicker decision-making, reduces project delays, and fosters a collaborative approach across your teams.
• Cost savings. Although collectors represent an upfront investment, they ultimately lead to significant cost savings. Increased productivity, reduced errors, and streamlined collaboration translate to lower project costs and improved profitability over the long term.

With so many benefits, selecting the right data collector for your specific needs becomes crucial. In the next section, we’ll explore key factors to consider when making this important investment.

The best data collectors for surveying will depend on which key features and specifications meet your project requirements. Let’s dive into the key points of consideration when selecting a data collector, whether it’s for use within a preexisting workflow or to meet developing needs:

• Processing power. Faster processors and ample memory enable data collectors to handle complex calculations and large datasets with ease.
• Storage. Adequate internal storage is crucial for storing project files, survey data, maps, and potentially even photos. Consider the scale of projects you typically handle to determine the necessary storage capacity.
• Software compatibility. Ensure the data collector is compatible with your preferred surveying software, along with GNSS receivers and total stations you use. For instance, Trimble data collectors use Trimble Access field software, which integrates seamlessly with Trimble Business Centre for transferring data from the site to the office.
• Durability. Data collectors need to withstand the harsh conditions of outdoor fieldwork. Look for rugged designs with dust, water, and impact resistance certifications (represented by IP ratings). Some may also meet the MIL-STD-810 military standard for durability.
• User interface. An intuitive user interface with clear menus and customisable shortcuts significantly speeds up data collection and minimises training time. Survey-specific software plays a key role in optimising the overall user experience
• Screen quality. A bright, high-resolution display with good visibility even in direct sunlight is essential for viewing maps, data, and making precise selections with the touchscreen. Look for screens with a high nit rating (a measure of display brightness) for optimal outdoor readability.
• Battery life. Long battery life ensures you can complete a full workday (or multiple days in remote locations) without interruptions. Additionally, the option for hot-swappable batteries allows you to quickly replace a depleted battery without fully powering down the device, maximising uptime in the field.

If portability, durability and ease of use are key concerns, the Trimble TDC6 is a great option. This lightweight device weighs just 287g and dispenses with the usual keyboard to make it lighter and smaller than most other data collectors in its class, as well as keeping it toward the lower end of the price bracket. Surveyors can utilise this GIS data collector alongside a GNSS receiver or as an onboard total station controller to suit their needs.

But this lighter construction and lower price point doesn’t mean it’s lacking in power. With a 2.7GHz octa-core processor and 6GB of RAM, as well as 64GB of data storage in a handy flash drive, the TDC6 can handle complex tasks with ease. And with its worldwide 5G integrated connectivity, military-grade durability and 9-hour hot-swappable battery: it’s the perfect choice for more demanding job sites.

For those looking to access cutting-edge of data collector technology, the Trimble TSC710 should be among your top choices. It has powerful Android processing and 128GB data storage to handle complex data in the field. The TSC710 runs Trimble Access software to support topographic surveys, staking out, scanning, and more. Pair this collector with a leading GNSS that makes use of tilt compensation for challenging areas, such as the Trimble R980. Other key features of the TSC710 include:

• 5G WWAN and Wi-Fi connectivity.
• 10-hour battery life as GNSS RTK.
• Multi-constellation tracking.
• Ergonomic QWERTY keyboard.
• Military grade and IP68 rated.

For a truly versatile solution that can not only capture and manipulate data but also run a wide range of office applications, a field tablet is a great choice. The Trimble T7 tablet brings field and office closer together, with integrated wireless communication options for real-time data sharing. And with front- and rear-facing cameras, you can take photos and videos of site conditions or landmarks and append visual references to your positioning data, as well as quickly jump on video calls to discuss issues with colleagues.

If you want to take advantage of these significant benefits but you’re wary of the up-front costs involved, why not consider a used model? Here at SEP, we offer a range of fully refurbished and quality-assured used surveying equipment, and that includes the Trimble T7 tablet.

 

Your data collector is a powerful tool, and like any precision instrument, it requires proper care and use to maximise its value. Here are a few tips to ensure you’re getting the best performance and longevity out of your investment:

• Calibrate regularly. Follow the recommended calibration schedule for your specific data collector model and any connected instruments like total stations. This ensures accurate data collection and maintains consistency throughout your projects.
• Update the software. Check for firmware and software updates regularly. These updates often include bug fixes, performance improvements, and new features that enhance your data collector’s capabilities. We’re always on hand to provide software recommendations.
• Invest in training. Understanding the full range of features and best practices for your data collector will unlock its full potential for you and your team.
• Maintain accessories. Regularly clean and inspect accessories like batteries, cables, and the display screen. This ensures reliable connectivity and a good user experience.

Investing time in proper maintenance and optimal use will ensure you get the most out of your data collector. Remember the basics: calibrate regularly, stay updated with the latest software, prioritise thorough training, store it correctly, and take care of its accessories.

These simple steps will prolong the life of your data collector and ensure it delivers maximum value to your surveying projects. For more advice on using data collectors as part of a total station survey, read our tips for total station data efficiency.

Data collectors are the beating heart of modern surveying. They help you to store, manage and analyse the vast amounts of data that cutting-edge surveying techniques generate, boosting efficiency and accuracy across your entire workflow and bringing field and office closer together. And with rapid advancements in areas like artificial intelligence (AI) and augmented reality (AR), data collectors will only become more essential for location professionals in the coming years.

Here at SEP, we stock a range of data collectors suited to both total station and GNSS/GPS surveys, as well as a range of used options to fit every budget. We also offer survey equipment hire if you have short-term needs or would like to explore a particular solution.

Our team of surveying professionals have been delivering expert advice and support for more than 35 years. If you would like to discuss your requirements and explore our services in more detail, contact us.