The Takenaka 200200 TLT2A is a high-precision digital theodolite engineered for demanding surveying and engineering workflows. This model balances mechanical robustness with advanced optical and electronic systems to support accurate angle measurement and distance computation in the field.
Built around a compact magnesium alloy housing, the instrument minimizes vibration effects and enhances long term reliability. Operators benefit from large, clear displays and intuitive key layouts that reduce setup time and help maintain focus on measurement quality.
| Model | 200200 TLT2A | Category | Digital Theodolite |
|---|---|---|---|
| Angle Measurement | Horizontal 360°, Vertical 0° to 90°, 1" or 2" mean reading | Distance Measurement | EDM infrared, approx. 1 km with prism, modem communication |
| Accuracy | 2" horizontal, 3" vertical standard, refinable with averaging | Operating Temperature | -10°C to +50°C, IP52 dust and splash protection |
| Power | Rechargeable battery pack, approx. 30 hours continuous use | Connectivity | Serial and Bluetooth interfaces to PC, PDA, total station controller |
Robust Construction for Field Work
The mechanical frame of the Takenaka 200200 TLT2A emphasizes rigidity without added weight. Designed to withstand repeated transport between setups, the theodolite resists shock and maintains alignment under moderate handling stress.
Focus knobs are stiff yet smooth, allowing precise target locking without drift. The sealed optical windows resist dust ingress, ensuring consistent image clarity even in dusty construction environments or over long daily shifts.
Optical System and Targeting Performance
High transmission objective lenses provide bright, high contrast images of both the reticle and distant survey marks. This clarity supports fast centering on prisms, pipes, or reference pins and reduces operator fatigue during repetitive measurements.
Illuminated stadia lines remain readable under low light conditions, and optional filters help manage glare from glass or water surfaces. The combination of optics and ergonomics makes the 200200 TLT2A suitable for topographic mapping, alignment checks, and control transfers.
Data Management and Integration
Measurement data, including horizontal and vertical angles, slope distances, and calculated coordinates, can be routed directly to external devices. Built in logging capacity stores large sets of observations, which can be downloaded via cable or wireless links for office processing.
Compatibility with standard surveying software simplifies export to CSV and CAD formats. Technicians can verify raw observations on site using the large display and correct entries before finalizing project records.
Advanced Workflow Features
Programmable function keys allow users to assign repetitive tasks such as stakeout routines, height difference calculations, or line extensions. This reduces the number of manual steps and lowers the chance of keystroke errors during busy survey campaigns.
Operators can store multiple instrument setups, atmospheric parameters, and prism constants in memory. Quick recall of these settings between shots minimizes configuration time and supports consistent methodology across teams.
Operational Best Practices and Recommendations
- Perform on site calibration checks at the start of each workday to verify angular and distance stability.
- Use consistent prism types and record prism constants in the instrument memory to avoid calculation errors.
- Store the theodolite with desiccant packs in a dry case when not in use to protect internal optics and electronics.
- Leverage programmable function keys to automate repetitive stakeout sequences and reduce setup time.
- Schedule annual professional calibration and service to maintain stated accuracy levels over the instrument life cycle.
FAQ
Reader questions
How does the 200200 TLT2A handle angle measurement accuracy in real projects?
The 200200 TLT2A provides standard 2" horizontal and 3" vertical accuracy, which can be improved through repeated angle averaging and careful centering. In practice, surveyors often achieve 1" or better results on stable setups when measuring multiple directions to the same target.
Can the distance module maintain reliability over long measurement runs?
Yes, the EDM module maintains stable performance across thousands of shots, provided the prism condition is good and atmospheric corrections are applied. Regular calibration checks and temperature input help preserve distance accuracy on large site layouts.
What connectivity options are available for data transfer with this model?
The theodolite supports both wired serial output and wireless Bluetooth links, allowing connection to laptops, controllers, and data collectors. Drivers are available for major surveying platforms, and configuration software helps verify port settings quickly on site.
Is maintenance intensive for the Takenaka 200200 TLT2A in dusty conditions?
Routine maintenance is moderate, with recommended cleaning of lens surfaces and checking seals after heavy use in very dusty environments. Replacement of desiccant packs and periodic professional calibration help sustain long term optical and angular performance.