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9
ELECTRICAL SPECIFICATIONS
Output functions
Analog output (active)
Total load resistance
Lower range value
Upper range value
Response time
Temperature drift
Switching output DC PNP (active) NC or NO (short-circuit protected)
Load current
Signal voltage HIGH
Signal voltage LOW
Response time
Supply voltage
Current consumption
Start-up time
Cable terminals
10
APPLICATION SPECIFICATIONS
detection in liquids
Dielectric constant [
]
r
Conductivity
Density
Dynamic viscosity
Application temperature
Ambient temperature
Application pressure
Velocity of level change
Interface (e.g. oil on top of water)
12
4-wire system
continuous level measurement through analog output and
point level detection through switching output
current output 4...20 mA
the span between the lower range value [4mA] and the upper range value
[20mA] is equal to 0...100% of the continuous level measurement reading. It
is recommended that the span between those two range values stays within
the measuring range [M] (see figure 10)
TM
<500 : HART
resistor approx. 250 + load resistance approx. 250
if the current output is connected to a device with an inner resistance of
approx. 250 , then there is no additional, external HART resistor necessary.
In that case, the HART modem is connected in parallel to the current output
wires
4,0 mA (span 0%)
20,0 mA (span 100%)
0,5 s (default), 2 s, 5 s (selectable)
<0,2 mm/K change in ambient temperature
<200mA
supply voltage - 2 V
0 V...1 V
<200 ms
12...30 VDC (reverse-polarity protected)
<70 mA at 24 VDC (no burden)
<6 s
screwless, cage clamp terminal block for stranded and
solid wires 0,5...2 mm²
the usage of cable end sleeves with insulation collar is not recommended
continuous level measurement and point level
single rod probe and rope probe: >1,8
no restrictions
no restrictions
single rod probe and rope probe: <5.000 mPa s = 5.000 cP
coaxial probe: <500 mPa s = 500 cP
-40°C...+150°C
operation: -25°C...+80°C
-1bar...40 bar
<1.000 mm/s
an oil layer of <70mm thickness on top of water is not detected by the sensor;
in this case the sensor will detect only the water level at a slightly lower posi-
tion than actual. From an oil layer thickness >70mm onwards, the sensor
detects the total level, including the oil layer, according to specifications
coaxial probe:>1,4
storage: -40°C...+85°C
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