25
Note:
the balancing resistance R should have a resistance equal to the total resistance of both
connecting wires of RTD and transmitter with terminals
Three-wire connection:
- Resistance thermometer RTD - Resistance transmitter - Potentiometric transmitter
Note:
wires connecting RTD with terminals 2 and 3 should have the same resistance
Table 1, Thermocouples : Colour codes
Type of
thermo-
couple
Material
British
standard
BS
USA
standard
ASTM
German
standard
DIN
French
standard
NFE
International
standard
IEC 584-3
T
Cu-CuNi
+ white
- blue
* blue
+ blue
- red
* blue
+ red
- brown
* brown
+ yellow
- blue
* blue
+ brown
- white
* blue
J
Fe-CuNi
+ yellow
- blue
* black
+ white
- red
* black
+ red
- blue
* blue
+ yellow
- grey
* grey
+ black
- white
* blue
K
NiCr-NiAl
+ brown
- blue
* red
+ yellow
- red
* yellow
+ red
- green
* green
+ yellow
- purplish red
* yellow
+ green
- white
* blue
R
S
Pt-Rh13Pt
Pt-Ph10Pt
+ white
- blue
* green
+ black
- red
* green
+ red
- white
* white
+ yellow
- green
* green
+ orange
- white
* blue
B
Pt-Ph30Pt
Use
copper
wires
+ grey
- red
* grey
+ red
- grey
* grey
Use
copper
wires
N
NiCrSi-
NiSi
+ orange
- blue
* orange
+ orange.
- red
* brown
+ orange
- red
* brown
+ orange
- red
* brown
+ pink
- white
* blue
E
NiCr-CuNi
+ brown
- blue
* brown
+ brown
- red
* brown
+ red
- grey
* grey
+ yellow
- purple
* purple
+ brown
- white
* blue
3.3.1.2 Alarms AL 1..32 and binary inputs BI 1..16
- Connection to terminals of the alarm system with electromechanical relays AL1..12
Alarms
with
electromechanical
relays
(
REL.)
are available
with normally open contacts (
NO
), (see section 11: Order
codes).
.
- Connection of the control signal to terminals of the binary input system BI 1..8
Binary inputs
BI1..8
are controlled by a
signal:
0 V d.c. – inactive binary input or
+ 5… 24 V d.c. – active binary input.
EN
Summary of Contents for KD8
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