12
2. Main characteristics of the various versions
OLC20 OLC20D
OLCT20 OLCT20D
EXPLO EXPLO EXPLO TOX/O2 EXPLO TOX/O2
Explosion-proof safety housing
X X X X X X
Intrinsic safety housing
X X
Outlet via packing gland
1
X X X X X X
3-wire cable / Wheatstone bridge
X X
3-wire cable / 4-20 mA output
X X
2-wire cable / 4-20 mA output
X X
Catalytic cell
X X X X
Electrochemical cell
X X
Interchangeable unit
X X
Interchangeable and precalibrated unit
X X X X
Wall mounting bracket
X X X
1
On request, the OLCT20 transmitter type in intrinsic safety version can be delivered with a sealed cable.