GeoMax ZT20R 1 Total Station | Used High-Precision Surveying Instrument for Geophysical & Engineering Projects
As a professional supplier of used geophysical and surveying equipment, we are proud to offer the fully tested, calibrated GeoMax ZT20R 1 total station. Part of Hexagon Group, this unit integrates advanced technology, combining high precision, easy operation and robust performance, making it a cost-effective solution for land surveyors, construction engineers, and geophysical exploration teams across Europe.
The GeoMax ZT20R 1 is designed for daily surveying tasks, featuring a custom WinCE operating system for smooth operation, a bright LCD screen for clear display, and a durable build that withstands harsh outdoor environments. All our used units undergo strict inspection and calibration to ensure they meet factory standards, providing reliable performance for your geophysical and engineering projects.
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Product Technical Specifications
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Category
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Specifications
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Angle Measurement
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Absolute encoding dial, 2″ (2 arc-seconds) accuracy, minimum reading 1″, liquid optical dual-axis compensator (±3′ working range, 1″ compensation accuracy)
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Distance Measurement (Prism Mode)
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Single prism range: 3000m; ranging accuracy: 2mm+2ppm; fine measurement time: 2.0s
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Reflectorless Measurement
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Range: 280m (Kodak gray card); ranging accuracy: 2mm+2ppm; no prism required for quick measurement
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Telescope
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30× magnification, 1°30′ field of view (26m/1km), 1.7m minimum focusing distance, 40mm aperture, illuminated crosshair
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Operating System & Memory
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Custom WinCE system, 64M internal memory, supports USB data transmission, stores up to 10,000 measurement points
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Power Supply
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High-energy lithium battery, 10 hours continuous operation, 7.2V DC, 100-240V universal charger, low memory effect
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Environmental Protection
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IP54 dust and waterproof rating, working temperature: -20°C to +50°C, passed EMC and ESD testing
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Physical Features
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Plate level vial sensitivity: 30″/2mm, circular vial: 8’/2mm; laser plummet (adjustable brightness); net weight: 6kg
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Brief Operation Manual
1. Pre-Work Preparation
- Unpack the instrument and check the integrity of the host, battery, charger, tripod, and accessories. Fully charge the battery before first use to ensure 10 hours of continuous operation.
- Set up the tripod on a stable surface, mount the GeoMax ZT20R 1 on the tripod, and complete centering and leveling using the laser plummet and circular vial for accurate positioning.
- Turn on the instrument by pressing the power button; the absolute encoding dial requires no initialization, and the WinCE system will enter the measurement interface within seconds.
2. Basic Measurement Operations
- Angle Measurement: Aim the telescope at the target, align the crosshair precisely, and press the “ANG” key to record horizontal and vertical angle data. The dual-axis compensator automatically corrects tilt errors.
- Distance Measurement: For prism mode, install the prism on the target point, aim at the prism center, and press the “DIST” key to display slope distance, horizontal distance, and height difference. For reflectorless mode, switch to “RL” mode and aim directly at the target surface.
- Data Storage & Transmission: Press the “REC” key to save data to the internal memory. Connect the instrument to a computer via USB to export data in GSI or other compatible formats for post-processing.
3. Daily Maintenance & Precautions
- After use, wipe the instrument surface with a soft dry cloth and clean the lens with a professional lens cloth; avoid touching the lens with bare hands.
- Remove the battery when not in use for a long time, and store it in a dry, cool environment away from direct sunlight and corrosive substances.
- Regularly calibrate the compensator and level vial to maintain measurement accuracy; we provide professional calibration and after-sales support for all sold units.
- Do not disassemble the instrument without professional guidance; unauthorized disassembly will void the warranty.
