Technical data
Proline Promass 80
74
Hauser
Calculation example for gas:
• Sensor type: Promass F, DN 50
• Gas: air with a density of 60.3 kg/m³ (at 20 °C and 50 bar)
• Measuring range (liquid): 70000 kg/h
• x = 90 (for Promass F DN 50)
Max. possible full scale value:
g
max(G)
=
g
max(F)
·
(G)
÷ x [kg/m³] = 70000 kg/h · 60.3 kg/m³ ÷ 90 kg/m³ = 46900 kg/h
Recommended full scale values
95 ("Limiting flow")
Operable flow range
Greater than 1000 : 1. Flows above the preset full scale value do not overload the amplifier, i.e.
totalizer values are registered correctly.
Input signal
Status input (auxiliary input):
U = 3 to 30 V DC, R
i
= 5 k
, galvanically isolated.
Configurable for: totalizer reset, positive zero return, error message reset, zero point adjustment
start, batching start/stop (optional)
10.1.4
Output
Output signal
Current output:
Active/passive selectable, galvanically isolated, time constant selectable (0.05 to 100 s), full scale
value selectable, temperature coefficient: typically 0.005% of full scale value/C, resolution: 0.5
A
• Active: 0/4 to 20 mA, R
L
< 700
(for HART: R
L
250
)
• Passive: 4 to 20 mA; supply voltage U
S
18 to 30 V DC; R
i
150
Pulse / frequency output:
Passive, open collector, 30 V DC, 250 mA, galvanically isolated.
• Frequency output: full scale frequency 2 to 1000 Hz (f
max
= 1250 Hz), on/off ratio 1:1, pulse
width max. 2 sec.
• Pulse output: pulse value and pulse polarity selectable, pulse width adjustable (0.5 to 2000 ms)
Signal on alarm
Current output:
Failsafe mode selectable (for example, according to NAMUR recommendation NE 43)
Pulse / frequency output:
Failsafe mode selectable
Status output:
"Nonconductive" in the event of fault or power supply failure
Load
See "Output signal"
Switching output
Status output:
Open collector, max. 30 V DC / 250 mA, galvanically isolated.
Configurable for: error messages, Empty Pipe Detection (EPD), flow direction,
limit values.
Содержание HART Proline Promass 80
Страница 2: ......
Страница 114: ...www endress com worldwide BA00057D 06 EN 13 12 71197479 FM SGML 10 0 ProMoDo ...