Instruction Manual for the DQY-1A Geological Compass

Release Date:

2021-06-22

Product Implementation Standard: Q/HGY06-2020

I. Uses

DQY-1A The primary uses of the geological compass include: :

1、 Measure Occurrence : Including strike, trend, and dip ；

2 , Topographic Survey : Including orientation ( Immediate rendezvous and docking )， Measure slope angle ， Set the level ；

3 , Measure the vertical angle.

II. Main Performance

1 , magnetic needle obstruction Niger time ( Magnetic needle deflection 90° The duration of remaining in the original position ) for 30-60 seconds 。

2 , Reading error :

a The angular error between the readings before and after the magnetic needle rotates shall not exceed 0.5° ；

b The magnetic needle is in 0–180° 、 90-270° The error caused by eccentricity at the location shall not exceed 0.5°;

c The reading error of the protractor shall not exceed 0.5° 。

3 , Level Sensitivity :

a The long level is 15 minutes scholar 3'/2mm ；

b circle The spirit level is 30 minutes scholar 5′/2mm 。

4 , Instrument external dimensions Inch ( long x wide x High ) for 80×70×31( m m) 。

The instrument weight shall not exceed 0.23kg。

Principle and Structure

Principle : This instrument utilizes a magnetic object. ( That is, the magnetic needle. ) Possessing the characteristic of indicating a specific direction relative to the magnetic meridian. ， Reading in conjunction with the scale ring ， The target phase can be determined. to in the direction of the magnetic meridian. Based on the two selected measurement points ( or known measurement points )， It can determine the position of another unknown target. 。

2 , Structure ( Refer to the structural schematic diagram. )

The instrument consists of an upper cover. 6 With the shell 13 Through the connecting hinge 8 Forms the main body of the instrument. The upper cover houses a reflecting mirror. 7， Can reflect the target in the mirror. Housing 13 It is equipped with a long front sight on the exterior. 1， Compatible with a small collimator 5， Aimable at the target. The housing contains a scale dial. 2 and magnetic needle 3， The target's direction can be read directly. position value, Bubble level 10 It can indicate the instrument’s horizontal position. Long spirit level 4 and indicator panel 11 Supply Measure Use to measure slope angle ， Can be on the steering wheel 12 Read the inclination angle directly from the scale. Switch 9 For the magnetic needle braking mechanism ， A magnetic declination adjustment shaft is provided on the bottom surface of the housing.

This instrument features a compact structure, small footprint, convenient portability, reliable accuracy, and stable performance.

Tilt the long-range sight so that it lies in the same plane as the box surface. ， Lift the cover to 45 degree ， And the sight notch is vertical. ， Parallel top cover ， Align the indicator "0" ， Then, align the line of sight through the aperture on the sighting tip and the elliptical hole in the reflector. ， That is the horizontal line.

( Three ) Measure the vertical angle of the object

Flip the top cover to the limit position. ， Press the side of the instrument tightly against the object. ( Such as drill rods ) Representative plane ， Then adjust the long bubble to be centered. ， The indicator reading at this time ， This is the object’s vertical angle.

V. Notes item

1 The magnetic needle, the jewel bearing, and the agate bearing are the instrument’s most critical components. ， Should be carefully protected. ， Keep it clean ， To avoid affecting the sensitivity of the magnetic needle. When not in use, ， The instrument should be securely closed. After the instrument is closed, ， Automatically pick up the magnetic needle by operating the switch and lever. ， Disengage the thimble from the agate bearing. ， To prevent damage to the page pin. 。

2 1. Do not disassemble any hinges lightly. ， To prevent loosening and subsequent impact on accuracy.

3 , Avoid exposing the instrument to high temperatures and direct sunlight as much as possible. ， To prevent air leakage and malfunction due to blisters. 。

4 The pivoting parts of the hinge should be regularly lubricated with watch oil to prevent dry friction and breakage.

5 The instrument should be placed in a well-ventilated, dry location, away from magnetic objects.