KROHNE OPTIFLUX 7300 EN - Manual (Page 32)

6
TECHNICAL DATA
32
OPTIFLUX 7300
www.krohne.com 01/2011 - 4001163301 - MA OPTIFLUX 7300 R01 en
Low flow cut-off Low flow cut-off Low flow cut-off Low flow cut-off
Function Switching point and hysteresis separately adjustable for each output, counter
and the display.
Switching point Set in increments of 0.1.
0....20% (current output, frequency output) or
0...±9.999 m/s (pulse output)
Hysteresis Set in increments of 0.1.
0...5% (current output, frequency output) or 0...5 m/s (pulse output)
Time constant Time constant Time constant Time constant
Function The time constant corresponds to the elapsed time until 67% of the end value
has been reached according to a step function.
Settings Set in increments of 0.1.
0...100 s
Status output / limit switch Status output / limit switch Status output / limit switch Status output / limit switch
Functions and settings Adjustable as automatic measuring range conversion, display of flow
direction, counter overflow, error, switching point or empty pipe detection.
Valve control with activated dosing function.
Status and/or control: ON or OFF
Operating data Basic I/Os Basic I/Os Basic I/Os Basic I/Os Modular I/Os Modular I/Os Modular I/Os Modular I/Os Ex i Ex i Ex i Ex i
Active - U
int
= 24 VDC
I ≤ 20 mA
open:
I ≤ 0.05 mA
closed:
U
0, nom
= 24 V
at I = 20 mA
-
Passive U
ext
≤ 32 VDC
I ≤ 100 mA
R
L, max
= 47 kΩ
R
L, min
= (U
ext
- U
0
) / I
max
open:
I ≤ 0.05 mA at U
ext
= 32 VDC
closed:
U
0, max
= 0.2 Vat I ≤ 10 mA
U
0, max
= 2 Vat I ≤ 100 mA
-
NAMUR - Passive to
EN 60947-5-6
open:
I
nom
= 0.6 mA
closed:
I
nom
= 3.8 mA
Passive to
EN 60947-5-6
open:
I
nom
= 0.43 mA
closed:
I
nom
= 4.5 mA
U
i
= 30 V
I
i
= 100 mA
P
i
= 1 W
C
i
=10 nF
L
i
= 0 mH