KROHNE OPTITEMP TT 31 R EN - Manual (Page 24)

02/2011 – 4000753501 – MA OPTITEMP TT31CR R01 en www.krohne.com
24
6.1.4 Values for input signals, TT 31 R
Inputs 11-14, 21-24
(Intrinsically safe sensor connection)
U
o
: ≤ 15 VDC
I
o
: ≤ 13 mA
P
o
: ≤
L
o
: ~ 100 mH
C
o
: ~ 550 nF
Table 2: Inputs, TT 31 R
ATTENTION!
The "Input/output/PC isolation" is galvanic isolation, comparable to a Zener barrier. The
TT 31 R can be supplied with an input voltage of <250 V using a non Ex-tested power
supply unit.