LR-Cal LDW-HK, Руководство пользователя, Страница: 29 / 92

29
GB
6. Commissioning, operaon
2. Load the weights equivalent to the desired pressure. Each weight is marked with its
pressure value. The piston-cylinder unit has a basic start, for other pressure psi
units a make-up weight is added to the piston head for conversion to bar. (e.g. bar)
For calibrang pressures less than the pressure value of the overhang
make-up weight value, it is recommended that the top loading weights
are used for calibraon. When the required pressure calibraon unit is
bar, it is essenal that the small make-up weight is i ed irst before any f
other top loading weights.
For calibrang pressures greater than the pressure value overhang
make-up weight value, the overhang should be i ed. All top loading f
weights must be removed before i ng the overhang . f (bell jar)
When the overhang is i ed, the inial weight that goes onto it is a large f
annular make-up weight. The small type make-up weight should not be
used when the overhang is i ed. f
6.6.1 To apply pressure
For pressures up to 140 bar (2,000 ) psi
1. Close valve (valve remaining open). B A
2. Wind screw pump handle clockwise. This will generate pressure up to approximately
140 bar or 2,000 , as handle is wound in. When handle becomes sf to rotate psi
this will indicate that the pressure limit for this range has been reached.
For pressures above 140 bar (2,000 ) psi
1. Ensure valve closed and valve open. B A
2. Wind screw pump handle clockwise unl the handle becomes sf to operate. f
3. Close Valve A and open valve . B
4. Connue to wind screw pump handle clockwise. This will generate pressure up to
approximately 1,200 bar or 16,000 . psi
5. When the piston rises and appears to loats, this indicates it is at its nominal desired f
pressure. When top loading weights are being ulised, a blue and yellow band only
indicates the loat posion. When the overhang is being employed, the bo om of f
the overhang will line up with a machined groove in the piston holders main body, to
indicate its nominal desired pressure.
Manual M LDW-HK odel LR- Cal