ISO 17123-7:2005 pdf download.Optics and optical instruments - Field procedures for testing geodetic and surveying instruments — Part 7: Optical plumbing instruments.
4 Requirements
Before commencing a survey, it is Important that the operator ensure that the preCision In use of the measuring equipment is appropriate for the intended measuring task.
The optical plumbing instrument and Ifs ancillary equipment shall be in known and acceptable slates 01 permanent adjustment according to the methods specified In the manufacturers handbook, and used with tripods as recommended by the manufacturec
The results of those tests are influenced by meteorological conditions. An overcast sky and low wind speed guarantee the most favourable weather conditions. The particular conditions to be taken into account may vary depending on where the tasks are to be undertaken. Note shall also be taken 01 the actual weather conditions at the time of measurement and the surroundings ii which the measurements are made The conditions chosen for the tests shall match those expected when the intended measuring task is actually carried out (see ISO 7077 and ISO 7078). Above all, this is applicable to the range of vertical distances (plumbing heights) over which the plumbing operation shall be carried out.
Tests performed in laboratories would provide results which are almost unaffected by many of the above- mentioned measuring conditions, but the costs for such tests are very high, and therefore they are not practicable for most users, In addition, laboratory tests yield precisions much higher than those that can be obtained under field conditions
For the test procedure described in this part of iso 17123, a rectangular x-v grid, used as target plate, is necessary. The spacing i of this grid shall fulfil the following condition.
Before commencing a survey, it is Important that the operator ensure that the preCision In use of the measuring equipment is appropriate for the intended measuring task.
The optical plumbing instrument and Ifs ancillary equipment shall be in known and acceptable slates 01 permanent adjustment according to the methods specified In the manufacturers handbook, and used with tripods as recommended by the manufacturec
The results of those tests are influenced by meteorological conditions. An overcast sky and low wind speed guarantee the most favourable weather conditions. The particular conditions to be taken into account may vary depending on where the tasks are to be undertaken. Note shall also be taken 01 the actual weather conditions at the time of measurement and the surroundings ii which the measurements are made The conditions chosen for the tests shall match those expected when the intended measuring task is actually carried out (see ISO 7077 and ISO 7078). Above all, this is applicable to the range of vertical distances (plumbing heights) over which the plumbing operation shall be carried out.
Tests performed in laboratories would provide results which are almost unaffected by many of the above- mentioned measuring conditions, but the costs for such tests are very high, and therefore they are not practicable for most users, In addition, laboratory tests yield precisions much higher than those that can be obtained under field conditions
For the test procedure described in this part of iso 17123, a rectangular x-v grid, used as target plate, is necessary. The spacing i of this grid shall fulfil the following condition.
