Rise Geo Service Center — UAE’s Leading Authority in Survey Instrument Calibration
Rise Geo Service Center — UAE’s Leading Authority in Survey Instrument Calibration
MILLIMETER PRECISION. ZERO DOWNTIME. FACTORY-CERTIFIED.
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About Services
We Offer a Full Range of Services!
- GPS/GNSS Receivers
- Total Stations Calibration and Repair Services
- Data Collectors And Field Controllers
- Theodolite Calibration
- Auto Levels Calibration And Service
- Base Station Radio Repair
- Cables And Connectors
- Survey Equipment Calibration
Why your gear is not appropriate: Proper Calibration in Dubai, U.A.E.
If you’re running a site in Dubai U.A.E., you know the atmospheric conditions. Between the 40+°C temperatures, the humidity, and the dust, the equipment behaves strangely. Buying a gear (Total Station, Theodolite, Auto-level or a GNSS) and expecting it to stay accurate forever is not probable. If the kit hasn’t been for service lately, you aren’t surveying – you’re just guessing and hoping for the best.
A real overhaul isn’t just about cleaning the lens and printing out a “passed” sticker. We at Rise Geo Control Systems, literally open these units up to sort out the mechanical drift that happens when they’ve been sitting in a vibrating pickup truck or baking in the sun for six months followed by proper calibration.
Sorting out the optics (Collimation): If your line of sight isn’t perfectly correct, you’re increasing the chances of an error from the first shot. In service, a lot of time is spent on the trunnion axis because that’s where the real problems hide. The unit might look okay on a flat car park, but the when you start shooting up at a high-rise, the horizontal accuracy falls off because of play in that axis. We also adjust the plummets (laser or optical) back to within 1mm. If you aren’t dead-center over your point, the rest of the math is a waste of time.
The EDM and the Prism Constant: The EDM is usually the first thing to drift. Instead of trusting what the screen says; a certified baseline check is run to see the actual scenario. The internal constants, beam alignments have to be synced with a master reference, else the distances start giving variances as the day gets hotter. The prism constant errors (0mm, -30mm, etc.) are one of the key reasons of an incorrect reading. We verify that the software is actually applying those offsets correctly so that systematic errors won’t occur during the whole traverse.
GNSS and the Dubai skyline Getting a “Fix” is easy, but getting a reliable one between buildings, cranes or glass towers in Dubai, U.A.E. is tough. We test the multipath rejection to make sure the antenna is ignoring “ghost signals” bouncing off the buildings. When RTK loops (GPS, GLONASS, Galileo, BeiDou, etc.) are run we aren’t looking for one lucky shot. We want to see the same coordinates three times in a row before we conclude.
Heat, Humidity, and Tilt The air density in Dubai, U.A.E. changes constantly, which messes with long-range shots. We calibrate the internal barometers and thermometers for the PPM adjustments – if those sensors are giving inaccurate readings, the refraction calculations will be wrong. The dual/quad-axis compensators are also fine-tuned during Calibration. They need to be responsive enough to handle up to 6′ of tilt, especially on unstable ground, to keep your data from drifting.
What are the Calibration Procedures for Survey Equipment? A Detalied Guide
When it comes to professional surveying, keeping your gear calibrated isn’t just a good idea – it’s what everything depends on for trustworthy outcomes. No matter if you’re working with total stations, GPS units, levels, or theodolites, going through thorough calibration steps stops those shifty errors that mess up your measurements, drag out projects, and blow budgets. Here at our Rise Geo Service Centre, we focus on full overhauls and calibrations for survey instruments, sticking to top industry benchmarks to get your tools running like new again. Let me walk you through this Calibration Procedures Guide with the step-by-step process we use for a total refreshing of your equipment.
Auto-level Service and Calibration
To ensure consistently precise and reliable surveying results, all brands and models of Auto-Levels should be inspected and professionally calibrated at least once every six months. Regular calibration helps maintain accuracy, extend the instrument’s lifespan, and enhance field performance.
When you bring your equipment to our Rise Geo Service Centre in Dubai U.A.E., each auto-level undergoes a comprehensive Complete Overhaul and Calibration process. Our expert factory trained technicians headed by Mr. Benson A. (with 22+ years of expertise in the calibration field) carefully follow a standardized procedure (brand-wise) that includes precision testing, mechanical adjustment, optical alignment, cleaning, and final verification – ensuring your auto-level delivers the highest measurement accuracy on every project. The procedures include:
- Level Base service – Dismantling, Cleaning, Re-greasing with special grease and assembling
- Worm Drive – Dismantling, cleaning, Re-greasing with special grease, assembling.
- Focus Drive – Dismantling, cleaning, Re-greasing with special grease, assembling of Focusing tube, Pinion complete and cleaning all lenses.
- Compensator Check – Compensator check and adjustment if needed.
- External instrumental cleaning.
- Final Calibration on Collimator.
- Cleaning of Carrying Cases.
- Issue of Calibration Certificate for 6 months, wherein a Calibration Warranty is also provided during this period.
For the highest level of accuracy and performance, Total Stations should be inspected and professionally calibrated every six months. Regular calibration is essential, especially considering the harsh atmospheric and temperature conditions common in the UAE and GCC region, which can impact the precision of surveying instruments.
When your total station is brought to our Rise Geo Service Centre in Dubai U.A.E., it undergoes a Complete Overhaul and Calibration procedure in a temperature-controlled environment. Our expert and qualified technicians lead by Mr. Benson A. perform precise testing, internal cleaning, mechanical adjustments, optical alignment, and final verification to ensure your instrument operates at peak performance and accuracy in every surveying task. Below is the comprehensive process of a Complete Overhaul followed by Calibration.
- Tribrach service – Cleaning and confirming smooth rotation of Levelling Screws
- Hz angle Encoder system – Set the Horizontal Constants in Service mode for correct Hz readings in User mode
- V angle Encoder system – Set the Vertical Constants in Service mode for correct V readings in User mode
- Focus – Dismantling, cleaning, Re-greasing with special grease, assembling of focusing tube and cleaning all lenses.
- External instrumental cleaning.
- Collimation check and adjustment on Collimator
- Horizontality check and adjustment on Collimator
- Alignment of EDM Laser beam to the Reticle of the instrument.
- Final Calibration on 4-target Collimator system
- Base Line checks to verify EDM constants.
- Cleaning of Carrying Cases.
- Issue of Calibration Certificate for 6 months, wherein a Calibration warranty is also provided during this period.
Cables and Connectors
Faulty or worn-out cables and connectors can severely affect the performance, accuracy, and reliability of GPS/GNSS receivers, often leading to signal loss, intermittent connectivity, or complete communication failure in the field. To avoid data errors and costly downtime on survey projects across Dubai and the wider UAE, it is essential that all cables and connectors remain in excellent physical and electrical condition, free from cracks, ruptures, or broken shielding.
At our Rise Geo Service Centre in Dubai, U.A.E. every GPS and GNSS cable, connector, and related accessory is carefully inspected and tested as part of a structured maintenance and calibration process for survey equipment. Our skilled experts supervised by Benson A. check for signs of wear, cuts, bent pins, corrosion, and loose terminations, repairing or replacing any damaged parts using high‑quality, manufacturer‑compatible components to ensure long-term durability and performance.
After repairs are completed, the full cable and connector assemblies are re-tested under working conditions to verify stable data transfer, uninterrupted power delivery, and reliable receiver connectivity to satellites and controllers in the UAE and GCC region.
The Summation
Don’t compromise on accuracy. Our Dubai-based proficient experts headed by Benson A. specialize in precision survey equipment at Rise Geo Control Systems (ISO 9001:2015 – AE 10001244/01/Q) providing brand-wise (SOKKIA, Stonex, Hi-Target, FJDynamics, etc.) certified survey equipment calibration and repair of a wide range of advanced tools, including total stations, GPS/GNSS receivers, and auto-levels. We also provide AMC (ANNUAL MAINTENANCE CONTRACT) to customers who prefer to get their gear/fleet of instruments service and Calibrated hassle-free, with priority given wherein they make a one-time payment and get 2 calibrations in a year without having to prepare an LPO, etc. for each time they bring in their units. We are obliged to return the instruments after the Calibration on the same day or the next having given precedence over other customers. We also provide Third-Party Certifications in case of a necessity from the Contractor’s side
Frequently Asked Questions
- How does Horizontality affect surveying reading?
Horizontality describes how much the Horizontal axis of a Total Station on which the EDM rotates, is tilted. When this axis is beyond the acceptable tolerance (usually around ±20″), the telescope no longer rotates perpendicularly, which can introduce errors when point is shifted up or down. During Calibration, this horizontality is carefully checked, corrected if necessary, and the updated value is stored in the instrument’s Service mode.
- What effect does Collimation have on Angle and Distance measurements?
Collimation on a Total Station is about getting the Telescope and emitting Laser perfectly aligned to the line of sight, so your angle measurements stay perfect. If the collimation is out of tolerance (±20″), then the target is not in the same line of sight and can cause miscalculation errors. During Calibration the value which should be under tolerance is stored in the Service program, which is critical for reliable horizontal, vertical, and face-left/right (FL/FR) readings – especially on Dubai, U.A.E. surveying jobs.
- Why does the Hz angle change from (0’00”0”) when the Telescope is rotated even if the Total Station is horizontally clamped?
All brands and models of Total Stations have tolerances in horizontality and collimation. No Total Station can have an absolute ZERO tolerance. Therefore, when the Telescope is used to shift a point from top to bottom or vice-versa, the unit is showing the variation of the horizontal from the actually required Perpendicular line. Consequently, the angle has to be manually adjusted to 0’00”0” to get the precise point of the vertical line.
- Can the end-user calibrate Auto-level, Total Station, etc.?
Generally, a basic Calibration procedure for end-users is described in every User Manual which comes with the main unit, be it an Auto-level or Total Station for simple field checks. Nevertheless, it is recommended that all Calibrations be done at a Service Centre by Authorized Service Personnel by means of the Calibrated Collimator, particularly for Total Stations as the Calibration is done through the Service Mode for some brands, which is accessible only to Service Engineers.
- Is there a standard height for all Brands and models of survey equipment during calibration in Service Centres?
Not at all. All models (Auto-Levels or Total Stations) differ in their Height when checked to Align the Horizontal line from the Center of the Telescope to the Center of the Collimator. Accordingly, before Calibration, the height of the Collimator stand is to be adjusted to align the two.
- What are the environmental factors that affect site work?
Environmental factors play a major role in how Accurate, Efficient, and Safe any surveying job will be, as they affect both the instruments and the site itself. Conditions such as temperature, rain, wind, dust, visibility, site accessibility, atmospheric pressure, and the natural features of the terrain can all influence measurement quality and field productivity, especially on active survey sites in Dubai and across the UAE.
Described by:
Technical & Service Manager with over 22 years of hands-on experience in Repair & Calibration
Rise Geo Certified Calibration Center Dubai – Book Service Now
Rise Geo Certified Calibration Center Dubai, You Can Trust, Right Here in Dubai.” In our line of work, ‘close enough’ isn’t good enough. Unverified measurements lead to reworks and blown budgets. At Rise Geo, we specialize in getting your Total Stations, GNSS receivers, and Levels back to factory standards. Book your service today and ensure your kit is as precise as the day you unboxed it.
Call our Dubai Service Center: 04-5478282
Book Online: rise-geo.com/service
Location: Rise Geo Control Systems LLC, Dubai, UAE
Ready to Eliminate Millimeter Risks? Book Calibration Now with Rise Geo Expert
A millimeter might not look like much on a ruler, but out in the field, it’s the difference between a perfect build and a million-dollar headache. If your kit hasn’t been serviced lately, you’re taking a huge risk. Bring your instruments into Rise Geo Control Systems in Dubai. We handle the technical heavy lifting—repairs, parts, and precision calibration—to make sure your gear is as sharp as the day you bought it.