Betriebsanleitung
LTB034X
Operating instructions
Version 1
Mode d’emploi
29.01.2024
Instrucciones de servicio
12/48
LTB034X / 2024/02
Supply voltage
For use in intrinsically-safe circuits only!
Maximum values:
I
i
= 0.5 A
C
i
, L
i
≈ 0 nF, 0 µH
The product of current and voltage should not exceed 0.12 VA, otherwise the gold contacts could be
permanently damaged.
Special conditions for safe use
Level switches without heat exchanger (Flat gaskets IP65)
Limits
microswitch
T
i
Ambient
temperature
T
A
Operating
temperature
T
0
B…, BB…,
2B…, 2BB…,
5B…, 5BB…
-25°C to 150°C
0°C to 70°C
0°C to 330°C
The combinations of the maximum values are to be avoided!
Limit value combinations according to temperature
diagram
3081-035EN
in the
appendix 1
Level switch without heat exchanger (O-rings IP66/IP67)
Limits
microswitch
T
i
Ambient
temperature
T
A
Operating
temperature
T
0
DB…, DBB…,
2DB…, 2DBB…,
5DB…, 5DBB…
-25°C to 150°C
-30°C to 120°C
-30°C to 120°C
The combinations of the maximum values are to be avoided!
Limit value combinations according to temperature
diagram
3081-036EN
in the
appendix 2
Level switches with heat exchanger for very high operating temperatures (Flat gaskets IP65)
Limits
microswitch
T
i
Ambient
temperature
T
A
Operating
temperature
T
0
HB…, HBB…,
5HB…, 5HBB…
-25°C to 150°C
0°C to 135°C
0°C to 400°C
The combinations of the maximum values are to be avoided!
Limit value combinations according to temperature
diagram
3081-037EN
in the
appendix 3
Level switches with heat exchanger for very low operating temperatures (O-rings IP66/IP67)
Limits
microswitch
T
i
Ambient
temperature
T
A
Operating
temperature
T
0
HB…, HBB…,
5HB…, 5HBB…
-25°C to 150°C
-10°C to 80°C
-196°C to 270°C
The combinations of the maximum values are to be avoided!
Limit value combinations according to temperature
diagram
3081-038EN
in the
appendix 4