Operation; Weight Pieces - WIKA CPB 3000 Betriebsanleitung

Pressure Balance
CPB 3000

3.2 Operation

3.2.1 Weight Pieces

First of all put the bell onto the piston/cylinder system.
Stack the weight pieces onto the bell depending on the pressure value that is required.
It is usually best to start with the heaviest weight so that the centre of gravity is as low as possible.
Each component is identified by a consecutive number. In the calibration certificate to each number
the resultant pressure assuming reference conditions is listed.
Example table from a calibration certificate page 2:
Druckwerte der Gewichtsstücke / Pressure values of masses
Kolben / piston
Glocke / bell
Teller / plate
Masse / weight piece
Masse / weight piece
Masse / weight piece
Masse / weight piece
Masse / weight piece
Masse / weight piece
Masse / weight piece
Masse / weight piece
Masse / weight piece
Masse / weight piece
Masse / weight piece
Masse / weight piece
Masse / weight piece
Masse / weight piece
Masse / weight piece
Masse / weight piece
Example: weight piece no. 5 generates a pressure value of 5.0000 bar
The pressure that will be achieved thus corresponds to the sum of the basic weight (piston), the
bell and the weight rings.
To reduce the starting value, the weight plate (No. 2) can be used as the basic holding surface
instead of the bell (No. 1).
WIKA Operating Instructions Pressure Balance Version 1.1
Bezeichnung des
Gewichtsstückes
type of weight piece
with its weight value of 1.01954 kg assuming reference
conditions (room temperature 20°C, air pressure1013 mbar,
relative humidity 40 %)
Nr. wahre Masse
no. true mass
in kg
1262 0.08160
1 0.81560
2 0.05097
3 1.01954
4 1.01954
5 1.01954
6 1.01954
7 1.01954
8 1.01954
9 1.01954
10 1.01953
11 1.01952
12 0.50976
13 0.20391
14 0.20391
15 0.12234
16 0.10196
17 0.07137
18 0.05098
Druckwert
für System
pressure value
for system
in bar
0.4002
3.9998
0.2499
5.0000
5.0000
5.0000
5.0000
5.0000
5.0000
5.0000
5.0000
4.9999
2.5000
1.0000
1.0000
0.6000
0.5000
0.3500
0.2500
GB
.
.
15