A gyrotheodolite is an instrument that combines a gyroscope and a theodolite through a connecting mechanism to measure the true north azimuth angle. It uses the physical characteristics of the gyroscope itself (fixed axis and precession), uses the sensitive part of the gyroscope's center of gravity to move downwards to be sensitive to the horizontal component of the earth's rotation angular velocity, and generates a northward precession torque under the action of gravity, making the gyroscope The instrument's main axis swings around the Earth's meridian to determine the true north azimuth. But its use method is also more important. The following will introduce the use method and precautions of the gyro-theodolite in detail.
1. How to use gyro-theodolite
1. Connect power
Connect the gyrotheodolite to the power supply, making sure the connection is secure and checking that the power supply voltage is stable. It is recommended to use a stable DC power supply to power the instrument.
2. Instrument self-test
After starting the gyro-theodolite, perform instrument self-test. Instrument self-test usually includes checking whether the display, sensors, motors and other components are working properly.
3. Place horizontally
Place the gyrotheodolite on a level ground and use a tripod or special bracket to secure the instrument stably. Make sure the instrument is level to improve measurement accuracy.
4. Wait for stability
After the instrument is started, you need to wait for a period of time for the instrument to stabilize internally. This time usually depends on the model and specifications of the instrument. It is recommended to wait according to the requirements in the instrument manual.
5. Rotate and observe
After the instrument has stabilized, start rotating observations. By rotating the theodolite, observe the data changes on the display screen for subsequent operations and measurements.
6. Pay attention to safety
During use, pay attention to safety. Avoid placing flammable and explosive items around the instrument, and do not expose the instrument to harsh environments such as high temperature and humidity.
7. Zero position determination of sling
Gyroscope theodolite is usually equipped with a sling device for determining the zero position of the sling. Follow the steps in the instrument manual, operate the sling device correctly, and complete the zero position determination of the sling.
8. Rough orientation
During the measurement process, a rough orientation is first performed. By observing the data on the display screen, initially determine the direction of the target point.
9. Precision Orientation
After completing the rough orientation, perform fine orientation. Use the precision measurement function of the gyro-theodolite to accurately determine the direction of the target point and record relevant data.
2. Precautions when using gyroscope
When using a gyrotheodolite, you need to pay attention to the following:
1. Protect the instrument from impact and collision.
2. When the sensitive part of the gyro is lowered to swing freely, the amplitude should be limited to ensure that the cursor image is always within the field of view and the cursor image is not allowed to run out of the field of view.
3. The gyro motor must be started or braked in the raised position (i.e. locked state).
4. After starting the gyro motor, pay attention to the battery voltage indication. If the pointer is in the red area, it means the battery voltage is normal; if the pointer is in the black area, it means the battery voltage is insufficient, you should brake immediately and recharge before operating.
5. When the instrument is working, avoid direct sunlight and ensure that the tripod is stable and reliable.
6. When packing and transporting the instrument, the stop hand wheel should be rotated until the positioning pin enters the positioning hole to ensure safety.
7. When there is no gyro load, do not turn the knob to the starting position to prevent damage to the power supply.
8. When the segment-shaped knob is moved to the braking position, the brake indicator light will light up. When the light goes out, the gyro motor stops. At this time, the knob should be turned to the off position immediately. It is not allowed to turn the knob to the braking position for a long time to prevent damage to the inverter.
9. After use, first hold up the sensitive part, then turn off the power, and then lock the gyro when the gyro rotor stops running.
Through the above steps, you can complete the use of gyro theodolite. During use, pay attention to safety, follow operating procedures, and ensure the accuracy and reliability of measurement results.
Summarize
From the above, we can understand that the use of gyro-theodolite still requires special attention, and the maintenance of the instrument is also very important. ERICCO's gyro theodolite includes ultra-high-precision gyro theodolite ER-GT-02 and low-temperature gyro theodolite ER-GT-05. They can be widely used in mine surveying, engineering surveying, military surveying, and antenna and drone orientation. Welcome to purchase.
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