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BA / RE 250 / EN / V17-11
Technical Data
Temperatures
Device version
Ambient temperature
*
Storage temperature
[°C]
[°F]
[°C]
[°F]
without electrical components
-40 …+80
-40
…+176
-40 …+80
-40
…+176
with limit switch(es)
-40 …+65
-40
…+149
-40 …+65
-40
…+149
with 4
…
20
mA output
-40 …+70
-40
…+158
-40 …+70
-40
…+158
* IMPORTANT !
For applications in hazardous areas it is mandatory that the temperature class of the
type examination certificate (protection type) will be observed.
For devices used in hazardous areas, additional safety notes apply; please refer to
the Ex documentation!
RE 250 with limit switch(es)
Cable gland
M20 x1.5
Isolation (2 contacts)
Galvanic isolated
Terminal connection
2.5 mm²
Limit switch
SJ3.5-N-BU
Switching function
NAMUR, NC
Nominal voltage U
O
8.2 V DC (R
i
approx. 1 kΩ)
Supply voltage
5 … 25 V DC
RE 250 with current output 4 … 20 mA
Cable gland
M20 x1.5
Terminal connection
2.5 mm²
Auxiliary supply voltage U
B
14 V … 30 V DC
Measuring signal
4 … 20 mA = 0 … 100% flow value in 2-wire technology
Power supply influence
< 0.1 %
Max. external load R
B
680 Ω (30 V)
R
B
= (U
B
- 14V) / 22 mA
Temperature influence
< 10 µA / K
RE 250 with current output 4 … 20 mA and HART
®
-Pro digital output
Switching function
NAMUR (EN 60947-5-6:2000)
Max. voltage
30 V DC
Max. power consumption
100 mW
Current (state: open)
type 0,4 mA
Current (state: closed)
type 0,4 mA
Pulse output
Max. rate
10 Hz
Pulse width
approx. 50 ms
