Siemens SITRANS LG250 Operating Instructions Manual page 75

Guided wave radar 4...20 ma/hart - two-wire rod and cable probe with sil qualification
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Ʋ Rod: ø 12 mm (0.472 in)
Torque for NPT cable glands and Conduit tubes
Ʋ Plastic housing
Ʋ Aluminium/Stainless steel housing
Input variable
Measured variable
Min. dielectric constant of the medium
Ʋ Cable probes
Ʋ Rod probes
Fig. 38: Measuring ranges - SITRANS LG250
1
Reference plane
2
Probe length L
3
Measuring range (default setting refers to the measuring range in water)
4
Upper dead band (see diagrams under Accuracy - grey section)
5
Lower dead band (see diagrams under Accuracy - grey section)
Output variable
Output signal
Range of the output signal
Fulfilled HART specification
Signal resolution
Failure signal current output (adjustable) ≥ 21 mA, ≤ 3.6 mA
Max. output current
PBD-51041388
10 Nm (7.38 lbf ft)
max. 10 Nm (7.376 lbf ft)
max. 50 Nm (36.88 lbf ft)
Level of liquids
ε
≥ 1.6
r
ε
≥ 1.6
r
4
2
3
5
4 ... 20 mA/HART
3.8 ... 20.5 mA/HART (default setting)
7
0.3 µA
21.5 mA
SITRANS LG250 - Operating Instructions
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1
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