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WAGO-I/O-SYSTEM 750
Process Image 83
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
4.6.4
Temperature Measurements (RTD & TC) with High
Resolution
4.6.4.1 Standard Format/Kelvin
With the setting “High Resolution,” the I/O module converts the measured values
of the temperature sensors (RTDs or TCs) into temperature values and outputs
the conversion results in degrees Kelvin to two decimal places.
The temperature values are represented in one word (16 bits) with a resolution of
one digit per 0.01 K.
The numerical range used corresponds to the defined temperature range of
+223.15 K to +327 K and is output accordingly as a process value in the range
−22315 … +32700
.
Exception:
With
Type C
TC sensors, the defined temperature range
corresponds to +273.15 K…+327 K, i.e. +27315…+32700 as a process value.
Table 91: Temperature Measurement Setting with High Resolution Option – Standard Format/Kelvin
Temperature
[K]
Numeric Value
Status Byte,
Hex.
Error LED
Range
Hex.
Dec.
≤ 213
.14
0x8000
-32768
0x50
On
Underflow
213.15
0x5343
21315
0x41
On
Underrange
223.14
0x572A
22314
223.15
0x572B
22315
0x00
Off
Nominal
range
327.00
0x7FBC
32700
327.01
0x7FBD
32701
0x42
On
Overrange
327.50
0x7FEE
32750
≥ 327
.51
0x7FFF
32767
0x60
On
Overflow
Table 92: Type C TC Setting with High Resolution Option – Standard Format/Kelvin
Temperature
[K]
Numeric Value
Status Byte,
Hex.
Error LED
Range
Hex.
Dec.
≤ 263
.14
0x8000
-32768
0x50
On
Underflow
263.15
0x66CB
26315
0x41
On
Underrange
273.14
0x6AB2
27314
273.15
0x6AB3
27315
0x00
Off
Nominal
range
327.00
0x7FBC
32700
327.01
0x7FBD
32701
0x42
On
Overrange
327.50
0x7FEE
32750
≥ 327
.51
0x7FFF
32767
0x60
On
Overflow