Input; Measured Variable; Measuring Range; Operable Flow Range - Endress+Hauser Proline Promass 80A Technical Information

Measured variable

Measuring range

Operable flow range

Input signal

6

Input

• 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 ranges for liquids
Nominal Diameter
[mm] [inch]
1 1/24"
2 1/12"
4 1/8"
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:
· ρ
g = g
/ 32 [kg/m³]
max(G) max(F) (G)
g
= max. full scale value for gas [kg/h]
max(G)
g
= max. full scale value for liquid [kg/h]
max(F)
ρ
= gas density in [kg/m³] at process conditions
(G)
Here, g can never be greater than g
max(G)
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:
· ρ
g = g
÷ 32 [kg/m³] = 100 kg/h · 11.9 kg/m³ ÷ 32 kg/m³ = 37.2 kg/h
max(G) max(F) (G)
Recommended full scale values:
See information in the "Limiting flow" Section → ä 21
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.
Status input (auxiliary input):
U = 3 to 30 V DC, R = 5 kΩ, galvanically isolated.
i
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 = 3 kΩ, galvanically isolated.
i
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 = 3 kΩ, galvanically isolated.
i
Switch level: ±3 to ±30 V DC, independent of polarity.
Configurable for: totalizer reset, positive zero return, error message reset, zero point adjustment start.
Range for full scale values (liquids), g
[kg/h]
0 to 20
0 to 100
0 to 450
max(F)
Proline Promass 80A, 83A
to g
min(F) max(F)
[lb/min]
0 to 0.73
0 to 3.7
0 to 16.5
Endress+Hauser