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Technical data
Operable flow range
Output signal
Signal on alarm
Galvanic isolation
98
Maximum full scale value for liquid [kg/h]
g
max(F)
< g
g
g
max(G)
max(F)
r
Gas density in [kg/m
G
DN
[mm]
8
15
25
40
50
To calculate the measuring range, use the Applicator sizing tool (® ä 94)
Calculation example for gas
• Sensor: Promass E, DN 50
• Gas: Air with a density of 60.3 kg/m
• Measuring range (liquid): 70 000 kg/h
• x = 125 kg/m
3
(for Promass E DN 50)
Maximum possible full scale value:
× r
: x = 70 000 kg/h × 60.3 kg/m
= g
g
max(G)
max(F)
G
Recommended measuring range
"Flow limit" section (® ä 103)
Greater than 1000: 1. Flow rates above the preset full scale value do not overload the amplifier so
the totalized values are registered correctly.
18.4
Output
2-wire:
• Current output 1: 4-20 mA HART
• Current output 2: 4-20 mA
• Lower-range value, full scale value and time constant (0.07 to 999 s) can be set
Maintenance information can be viewed via the following interfaces:
• Local display:
– Error symbol (in accordance with NAMUR Recommendation NE 107)
– Plain text display
• Current output: failsafe mode selectable (in accordance with NAMUR Recommendation NE 43):
– Minimum alarm: 3.6 mA
– Maximum alarm (= factory setting): 22 mA
• Digital interface such as HART communication or CDI service interface (in accordance with
NAMUR Recommendation NE 107)
All circuits for the outputs are galvanically isolated from each other.
can never be greater than g
max(G)
3
] at operating conditions
[in]
3/8
½
1
1 ½
2
:
(at 20 °C and 50 bar)
3
Proline Promass E TB2 HART
max(F)
x
3
[kg/m
]
85
110
125
125
125
: 125 kg/m
:
= 33 800 kg/h
Endress+Hauser
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