Level calibration device

Functions and main technical indicators of the level calibration device

1、 Composition and Function of the Device

1. This device meets the requirements《JJF 1085-2002 Level Calibration Specification》The requirement is to be able to calibrate horizontal rulers with division values of 0.5, 1, 2, 5, and 10mm/m, and specifications of 100-1000mm;

2. This deviceCalibration based on division value errordeviceCalibration of indication error of line rulerDevice (steel ruler)Composed of parallel columns on a plane and a 45 square ruler;

3. Calibration device for division value error: using a 500mm spacing bridge device and a manual lifting device (displacement accuracy not greater than 0.015mm), the division value error is calculated, and the indication error is less than ± 0.015 mm/m;

2、 Main technical indicators of the device

1. Level calibration specification: 100-1000mm;

2. Calibration system for division value error

(1) Supporting straightedge length: 600mm;

(2) Flatness of supporting ruler: ＜ 0.02mm;

(3) Horizontal ruler lifting angle: ± 20mm/m;

(4) System indication error: ＜ ± 0.015 mm/m;

3. Plane parallel column

(1) Working face length: 800mm;

(2) Workface flatness: ≤ 0.05mm;

(3) Parallelism of two working surfaces: ≤ 0.1mm;

4. 450 square feet

(1) Working face length: 500mm;

(2) Workface flatness: ≤ 0.05mm;

(3) Deviation of 450 degree angle value: ± 2 ';

5. Steel ruler: 1m: MPE: ± 0.2mm;

6. Environmental temperature: 20 ℃± 8 ℃;