PTZ-BOX 5.0 User manual, document edition: 13
25
(10
70) bar abs
2
(10
100) bar abs
2
Standard ranges for pressure
p2
measurement
(auxiliary, optional)
(0
100) mbar G
± 0,5 mbar
±1 mbar
(0
1) bar G
± 1 mbar
± 2 mbar
(0
7) bar G
For values: up to 2,8 bar
± 0,08 % of range
± 0,12 % of range
above 2,8 bar
± 0,2 % measured value
± 0,3 % measured value
4
16 bar G
3
For values: up to 9 bar
± 0,15 % of range
± 0,3 % of range
above 9 bar
± 0,2 % measured value
± 0,4 % measured value
Non-standard ranges for pressure
p2
measurement (auxiliary, optional)
(0
170) mbar G
(0 ÷ 300) mbar G
± 0,5 mbar
± 1 mbar
4
34 bar G
3
5 ÷ 55 bar G
3
14
62 bar G
3
± 0,2 % of range
± 0,4 % of range
2
–
range of indications from 0,9 bar to p1 max
3
–
range of indications to atmospheric pressure
Devices with sensors of low gauge pressure (ranges up to 1 bar) show a significant effect of
mechanical stress on the indication of the pressure p2. In order to achieve the declared
accuracy, after installation of the device on the target location, it is necessary to set the
indication to zero by
the zero setting mechanisms.
Compressibility calculation
In PTZ-BOX 5.0 there is possibility to choose computation algorithm of compressibility factor:
When using algorithms SGERG-88, AGA8-G1, AGA8-G2, AGA NX-19mod and K1=const.,
device requires programming of parameters values such as calorific value
Hs
and relative
density
d
to be adequate for currently set base conditions (
Tb
and
pb
) for volume
calculation and reference conditions for combustion (T1 and P1, here always P1=pb). Set of
base conditions in many European countries: pb=1,01325 bar; Tb=273,15 K; T1=298,15 K.
When programming full gas composition, no further recalculations are necessary.
Value
ConfAlgZ
Name of algorithm
0
AGA8-92DC (full gas composition)
1
SGERG-88 (Hs-d-XCO2-XH2 or full gas comp.)
2
AGA8-G1 (Hs-d-XCO2-XH2 or full gas comp.)
3
AGA8-G2 (d-XCO2-XH2-XN2 or full gas comp.)
4
AGA NX19-mod (d-XCO2-XN2 or full gas comp.)
5
K1=const.
