Siemens SITRANS LG250 Operating Instructions Manual page 76

Permissible residual ripple - Ex-d-ia instrument
Ʋ for 18 V< U < 36 V
B
Load resistor
Ʋ Calculation
Ʋ Example - Non-Ex instrument with
U = 24 V DC
B
Electrical protective measures
Protection rating
Housing material
Plastic
Aluminium
Stainless steel, electro-
polished
Stainless steel, precision
casting
Protection class
Approvals
Instruments with approvals can have deviating technical data (depending on the version). For such
instruments, the corresponding approval documents must be noted.
IEC 61010-1
10)
76
≤ 1 V
(U - U
B
(24 V - 9.6 V)/0.022 A = 655 Ω
Version
Single chamber
Double chamber
Single chamber
Double chamber
Single chamber
Single chamber
Double chamber
III
10)
SITRANS LG250 - Operating Instructions
(16 ... 400 Hz)
eff
)/0.022 A
min
IP-protection class
IP 66/IP 67
IP 66/IP 67
IP 66/IP 68 (0.2 bar)
IP 66/IP 67
IP 66/IP 68 (0.2 bar)
IP 66/IP 68 (0.2 bar)
IP 66/IP 68 (0.2 bar)
IP 66/IP 67
IP 66/IP 68 (0.2 bar)
NEMA protection
Type 4X
Type 4X
Type 6P
Type 4X
Type 6P
Type 6P
Type 6P
Type 4X
Type 6P
PBD-51041387