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Sokkia DT540 5" Electronic Digital Theodolite Dual Display 303226101

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  • Measures horizontal and vertical angles

  • 2.5-inch telescope resolving power

  • Dual-axis compensator

  • Absolute encoder

  • Reticle illumination

  • Audible right-angle notification

  • RS232C serial port

  • 140-hour battery life

  • Water resistant and dustproof to IP-66

  • Dual backlit LCD display


Availability: In stock


Overview for the Sokkia DT540 5" Electronic Digital Theodolite Dual Display

With 5-second accuracy, the Sokkia DT540 Digital Theodolite provides precise angle measurements for construction and layout applications. This optical instrument ensures that the target is accurately measured with its built-in absolute encoder, automatic axis compensation, 30X magnification and 2.5-inch resolving power for crystal clear images of points.

Dual-Axis Compensator

The DT540 digital theodolite automatically compensates both vertical and horizontal angles by monitoring the tilt of the instrument in two directions.

Enhanced Reliability

With the integrated absolute encoder, surveyors can start taking measurements as soon as the power is turned on. Absolute encoder’s new algorithm remarkably reduces power consumption by restoring the azimuth after the instrument is turned off or restarted.

Different Display Modes

Select the angle display unit that best suits you. Horizontal angle is switchable between clockwise and counterclockwise, angle hold and zero-set functions are also provided.

Audio Notification for Right-Angle

Once the zero horizontal angle direction is determined, the DT540 survey instrument emits audible tones for each of the four right-angle directions. Specifically, it sounds two different tones within ±15 degrees of 90 degrees and stops beeping when it comes within ±1 degree.

Easy to Use Control Panel

For added convenience, this Sokkia theodolite features a simple 4-key operation, dual and an integrated reticle illuminator that provides clear angle readings and allows construction professionals to work under all lighting conditions. Field data can also be transferred to external devices via the RS-232C serial port.

Rugged with Long Battery Life

The Sokkia DT540 withstands the harshest jobsite environment with its IP-66 rating for dust and water protection. Powered by four standard AA alkaline batteries, this survey tool operates up to 140 hours and works for two to five weeks without changing batteries depending on usage.

This Sokkia theodolite package comes with a hard carrying case, lens cap, plumb bob, tool pouch, vinyl cover, cleaning cloth, batteries and 1-year manufacturer's warranty.

Features for the Sokkia DT540 5" Electronic Digital Theodolite Dual Display

  • Measures horizontal and vertical angles
  • 5-second accuracy
  • 2.5-inch telescope resolving power
  • Dual-axis compensator automatically corrects tilt errors
  • Absolute encoder
  • Reticle illumination for good viewing in low light conditions
  • Audible right-angle notification
  • Optical plummet
  • Detachable tribrach
  • RS232C serial port
  • Water resistant and dustproof to IP-66
  • Dual backlit LCD display
  • Up to 140-hour battery life

Specifications for the Sokkia DT540 5" Electronic Digital Theodolite Dual Display

Image Erect
Magnification 30x
Diameter of Objective Lens (Aperture) 1.8 in (45 mm)
Focus Distance 3 ft (0.9 m)
Field of View 1 degree 30'
Ratio of Stadia Lines 100
Resolving Power 2.5-inch
Length of Tube 5.9 in (149 mm)
Reticule Illumination yes
Optical Plummet
Image Erect
Magnification 3x
Field of View 3 degrees
Focus Range 1.64 ft (0.5 m)
Angle Measurement
Display 1"/5" (0.2/1mgon)
Accuracy 5-second
Circle Diameter 2.8 in (71 mm)
Measuring Method/Reading System Absolute rotary encoder scanning
Detection Method Horizontal: diametrical; vertical: single
Plate/Tubular Bubble Vial 40 seconds/2 mm
Circular Bubble Vial 10 minutes/2 mm
Weight 9.0 lbs (4.1 kg)
Warranty 1-year
Dimensions 7.4 x 5.9 x 12.3 in (18.8 x 14.9 x 31.3 cm)
Protection Class IP-66 (dustproof and protection against water jets and heavy seas)
Tribrach Detachable
Power Source 4 x LR6/AA batteries
Battery Life 140 hours
Battery Life Alert yes
90-Degree Layout yes
Checking Angles yes
Alignment and Plumb yes
Short-Range Leveling yes
General Construction yes
Anchor Bolt Positioning yes
Steel Column Placement yes
Setting Elevations yes
Setting Lines yes
Basic Grade Work yes
Display and Keypad
Type LCD, 7 digits x 2 lines
Sides Dual
Backlight yes
Operating -4°F to +122°F (-20°C to +50°C )
Tilt Sensor/Compensator
Range ±3' (±55mgon)
Pin Port RS-232C

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