Siemens SITRANS LG240 Operating Instructions Manual page 63

Output variable - Additional current output
For details on the operating voltage see chapter "Voltage supply"
Output signal
Range of the output signal
Signal resolution
Fault signal, current output (adjustable)
Max. output current
Starting current
Ʋ for 20 ms after switching on
Ʋ for run-up time
Load
Damping (63 % of the input variable),
adjustable
Indication value - Display and adjustment module
Ʋ Displayed value 1
Ʋ Displayed value 2
Resolution, digital
Measurement accuracy (according to DIN EN 60770-1)
Process reference conditions according to DIN EN 61298-1
Ʋ Temperature
Ʋ Relative humidity
Ʋ Air pressure
Mounting, reference conditions
Ʋ Min. distance to internal installations
Ʋ Vessel
Ʋ Medium
Ʋ Mounting
Sensor parameter adjustment
Typical deviation - Interface measure-
ment
The indication values can be assigned individually.
3)
With interface measurement = 2.0
4)
PBD-51041037
4 ... 20 mA (passive)
3.8 ... 20.5 mA (default setting)
0.3 µA
Last valid measured value, ≥ 21.0 mA, ≤ 3.6 mA
In order to detect the rarely occurring hardware failures
in the device, we recommend monitoring both interfer-
ence values (≥ 21.0 mA, ≤ 3.6 mA)
21.5 mA
≤ 10 mA
≤ 3.6 mA
Load resistor, see chapter "Voltage supply"
0 ... 999 s
3)
Filling height Level
Electronics temperature
< 1 mm (0.039 in)
+18 ... +30 °C (+64 ... +86 °F)
45 ... 75 %
+860 ... +1060 mbar/+86 ... +106 kPa
(+12.5 ... +15.4 psig)
> 500 mm (19.69 in)
metallic, ø 1 m (3.281 ft), centric mounting, process fit-
ting flush with the vessel ceiling
Water/Oil (dielectric constant ~2.0)
Probe end does not touch the vessel bottom
No gating out of false signals carried out
± 5 mm (0.197 in)
SITRANS LG240 - Operating Instructions
4)
63