Rtd Temperature Vs. Resistance - ABB RELION Series Technical Manual

Section 3
Basic functions
3.12.2.9
92
Temperature sensor Pt100 is used in the temperature range of 15...180 °C. Value unit
"Degrees Celsius" is used and the set values Value minimum and Value maximum are
set to 15 and 180, respectively.
Value deadband = 7500 (7.5% of the total measuring range 165)
AI_VAL# = AI_DB# = 85
If AI_VAL# changes to 90, the reporting delay is:
( 180 C 15 C
° − °
t s ( )
=
90 C
° −
GUID-F47EF6B6-9A14-44A2-AD19-BC067E4A7D78 V3 EN
Table 38: Settings for X130 (RTD) analog input deadband supervision
Function
X130 (RTD) analog input
Since the function can be utilized in various measurement modes, the
default values are set to the extremes; thus, it is very important to set
correct limit values to suit the application before the deadband
supervision works properly.

RTD temperature vs. resistance

Table 39: Temperature vs. resistance
Temp Platinum TCR 0.00385
°C
Pt 100
-40 84.27
-30 88.22
-20 92.16
-10 96.09
0 100
10 103.9
20 107.79
30 111.67
40 115.54
50 119.4
60 123.24
70 127.07
Table continues on next page
7500 %s
) s
⋅
100000
2 5 . s
≈
85 C
°
Setting
Value deadband
Nickel TCR 0.00618
Pt 250 Ni 100
210.675 79.1
220.55 84.1
230.4 89.3
240.225 94.6
250 100
259.75 105.6
269.475 111.2
279.175 117.1
288.85 123
298.5 129.1
308.1 135.3
317.675 141.7
1MRS758755 A
Maximum/minimum (=range)
Value maximum / Value
minimum (=20000)
Ni 120 Ni 250
94.92 197.75
100.92 210.25
107.16 223.25
113.52 236.5
120 250
126.72 264
133.44 278
140.52 292.75
147.6 307.5
154.92 322.75
162.36 338.25
170.04 354.25
REC615 and RER615
Technical Manual
(Equation 4)
Copper TCR
0.00427
Cu 10
7.49
-
8.263
-
9.035
-
9.807
-
10.58
-
11.352
-