FOIF DT402-Z Auto-Collimating Digital Theodolite

The FOIF DT402-Z is an auto-collimating digital theodolite designed for precision alignment, baseline measurement and equipment installation. In addition to its 2″ electronic angle measurement capability, the instrument integrates an auto-collimator with a 30 m effective indoor working range and 5″ collimation accuracy. This combination makes it suitable for applications that require more than conventional horizontal and vertical angle measurement.

Key Features

• 2″ angular accuracy

• Integrated auto-collimator for precision alignment

• 5″ auto-collimation accuracy

• Effective indoor collimation range up to 30 m

• Absolute encoder for angle measurement

• 30× telescope with 45 mm objective

• Dual-side LCD display with backlight

• Single-axis compensation

• Standard laser plummet

• Up to 24 hours of operation

• IP55 water and dust protection

Precision Alignment and Auto-Collimation

The DT402-Z is designed for situations where a precise reference direction is required. Its integrated auto-collimation system can be used to establish and check alignment lines, while the electronic theodolite function provides conventional angle measurement.

This makes the instrument particularly useful for precision equipment installation, guideway alignment, baseline measurement and other engineering tasks where small directional deviations need to be detected.

Core Specifications

• Model: DT402-Z

• Angular accuracy: 2″

• Reading system: Absolute encoder

• Minimum reading: 1″ / 5″ / 10″

• Telescope magnification: 30×

• Objective aperture: 45 mm

• Field of view: 1°30′

• Minimum focusing distance: 1.0 m

• Telescope resolution: 3.5″

• Auto-collimation accuracy: 5″

• Auto-collimation working range: Up to 30 m

• Display: Dual-side LCD with backlight

• Compensation: Single-axis

• Compensation range: ±3′

• Compensation setting accuracy: 1″

• Laser plummet: Class 2, 635 nm

• Laser plummet working distance: 0.5–80 m

• Power supply: 6V Ni-MH battery

• Operating time: Up to 24 hours

• Communication: RS-232C

• Protection: IP55

• Operating temperature: -20°C to +50°C

• Weight: Less than 4.5 kg

Applications

• Precision equipment installation

• Guideway alignment

• Baseline measurement

• Precision linear alignment

• Industrial construction

• Rail transit construction

• Port and shipbuilding projects

• Machinery installation

• Telecommunications infrastructure

• Engineering surveying