Siemens SITRANS LG250 Operating Instructions Manual page 83
Guided wave radar
4...20 ma/hart - two-wire
rod and cable probe
with sil qualification
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Also See for SITRANS LG250:
- Operating instructions manual (92 pages) ,
- Operating instructions manual (88 pages) ,
- Operating instructions manual (84 pages)
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Materials
Ʋ Housing
Ʋ Inspection window
Integrated clock
Date format
Time format
Time zone Ex factory
Electronics temperature measurement
Resolution
Accuracy
Voltage supply
Operating voltage
Ʋ Non-Ex instrument, Ex-d instrument
Ʋ Ex ia instrument
Ʋ Ex-d-ia instrument
Operating voltage with illuminated display and adjustment module
Ʋ Non-Ex instrument, Ex-d instrument
Ʋ Ex ia instrument
Ʋ Ex-d-ia instrument
Reverse voltage protection
Permissible residual ripple - Non-Ex, Ex-ia instrument
Ʋ Frequency
Ʋ for 12 V< U
< 18 V
N
Ʋ for 18 V< U
< 35 V
N
Permissible residual ripple - Ex-d-ia instrument
Ʋ Frequency
Ʋ for 18 V< U
< 35 V
N
Load resistor
Ʋ Calculation
Ʋ Example - Non-Ex instrument with
U
= 24 V DC
B
Electrical protective measures
Protection rating
Housing material
Plastic
PBD-51041388
ABS
Polyester foil
Day.Month.Year
12 h/24 h
CET
1 °C (1.8 °F)
±1 °C (1.8 °F)
9.6 ... 35 V DC
9.6 ... 30 V DC
15 ... 35 V DC
16 ... 35 V DC
16 ... 30 V DC
20 ... 35 V DC
Integrated
16 ... 400 Hz
≤ 0.7 V
≤ 1.0 V
16 ... 400 Hz
≤ 1.0 V
(U
- U
B
(24 V - 9.6 V)/0.0215 A = 670 Ω
Version
Single chamber
Double chamber
SITRANS LG250 - Operating Instructions
eff
eff
eff
)/0.0215 A
min
IP-protection class
IP 66/IP 67
IP 66/IP 67
NEMA protection
NEMA 4X
NEMA 4X
83
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