Pentair HAFFMANS c-DGM Instruction Manual page 64

Conversion of the pressure and temperature units:
Pressure
Temperature
Rule of thumb for the conversion of the CO
Converting the O units
2
The c-DGM can be configured for various oxygen units; the conversion formulas used by the c-
DGM are shown below:
% O = % air saturation
2
( ) = O % ⋅
ppm GAS
2
For
T : Temperature in ° C
m
p : Atmospheric air pressure during the oxygen calibration in bar
atm
(
c = 48,998 - 1,335
T
mg % air saturation
= p ⋅
atm
l , 1 013
mg
ppm ( LIQ ) =
l
µ g mg
= ⋅ 1000 = ppb
l l
The traditional Uhlig's method DO*Z:
TPO = DO ⋅
[ ] [ ]
mg / l mg / l
Page 64 of 78
P(bar)
P(bar)
T(° C)
2
20,95
⋅
100
10000
2
⋅ T + 0,02755 ⋅ T - 0,000322
m m
0,2095
⋅ ⋅ c ⋅
T
100

V

hs
1 + ( ⋅ 100 ) ⋅

V − V

p hs
P(psi)/14.5
P(kg/cm²)/1.02
(T(° F)-32)×5/9
unit CO (g/L) = 2 * CO
2
CO (g/L) = 10 * CO
2
3
⋅ T + 0,00000159
m
32
22 , 414
− 7
3777 ⋅ ( , 4 15 ⋅ 10 ⋅
T
, &&D E^ 'D 'D
(volume)
2
(wright%)
2
)
4
temp. correction
8 ⋅ T
m
2 − 4
+ 2 0 , ⋅ 10 ⋅ − , 0 0701
T
T

)



c-DGM/i-DGM