Proline Promass 80A, 83A
6
Hauser
Input
Measured variable
• Mass flow (proportional to the phase difference between two sensors mounted on the measuring tube to
register a phase shift in the oscillation)
• Fluid density (proportional to resonance frequency of the measuring tube)
• Fluid temperature (measured with temperature sensors)
Measuring range
Measuring ranges for liquids
Measuring ranges for gases
The full scale values depend on the density of the gas.
Use the formula below to calculate the full scale values:
g
max(G)
=
g
max(F)
·
ρ
(G)
/ 32 [kg/m³]
g
max(G)
= max. full scale value for gas [kg/h]
g
max(F)
= max. full scale value for liquid [kg/h]
ρ
(G)
= gas density in [kg/m³] at process conditions
Here,
g
max(G)
can never be greater than
g
max(F)
Calculation example for gas:
• Measuring device: Promass A, DN 2
• Gas: air with a density of 11.9 kg/m³ (at +20 °C and 10 bar)
• Measuring range: 100 kg/h
Max. possible full scale value:
g
max(G)
=
g
max(F)
·
ρ
(G)
÷ 32 [kg/m³] = 100 kg/h · 11.9 kg/m³ ÷ 32 kg/m³ = 37.2 kg/h
Recommended full scale values:
See information in the "Limiting flow" Section
Operable flow range
Greater than 1000 :1.
Flow rates above the preset full scale value do not overload the amplifier,
i.e. the totalizer values are registered correctly.
Input signal
Status input (auxiliary input):
U = 3 to 30 V DC, R
i
= 5 k
Ω
, galvanically isolated.
Configurable for:
totalizer reset, positive zero return, error message reset, zero point adjustment start,
batching start stop (optional), totalizer reset for batching (optional).
Status input (auxiliary input) with PROFIBUS DP
U = 3 to 30 V DC, R
i
= 3 k
Ω
, galvanically isolated.
Switch level: ±3 to ±30 V DC, independent of polarity.
Configurable for: positive zero return, error message reset, zero point adjustment start, batching start/stop
(optional), totalizer reset for batching (optional).
Status input (auxiliary input) with MODBUS RS485
U = 3 to 30 V DC, R
i
= 3 k
Ω
, galvanically isolated.
Switch level: ±3 to ±30 V DC, independent of polarity.
Configurable for: totalizer reset, positive zero return, error message reset, zero point adjustment start.
Nominal Diameter
Range for full scale values (liquids),
g
min(F)
to
g
max(F)
[mm]
[inch]
[kg/h]
[lb/min]
1
1/24"
0 to 20
0 to 0.73
2
1/12"
0 to 100
0 to 3.7
4
1/8"
0 to 450
0 to 16.5
