ADwin-Pro II
Hardware, manual Dec. 2018
153
Pro II: Extension and Interface Modules
Pro II-TC-8 ISO Rev. E
ADwin
5.8.2 Pro II-TC-8 ISO Rev. E
The module Pro II-TC-8 ISO Rev. E has 8 inputs for thermocouples and can be
operated with thermocouple types B, E, J, K, N, R, S or T. For each channel
the thermoelectric voltage (with or without cold junction correction) or the tem-
perature may be queried separately via software.
Each channel is equipped with a separate ADC. The module provides a com-
mon cold junction compensation for all temperature inputs.
The jumper position (see fig. 139, left side) sets for each channel separately if
the channel potentials are separated from each other:
– Position right: The channel potentials are separated from each other
(default).
– Position left: The channel’s negative input is connected to ground.
Input signals at the ADCs are digitized at a stepwise adjustable sample rate.
As soon as a value is queried via software, the module calculates the thermo-
electric voltage or the temperature in °Celsius or °Fahrenheit from the last
measurement value. All calculation is based upon the norm IEC 584-1. The
thermoelectric voltage without cold junction correction can be returned, too.
The inputs have a Butterworth filter with 5Hz as low-pass. The module can also
be ordered without low-pass.
Calibration of the module is performed by the manufacturer. If needed, please
send the module to the address given on the back of the cover page.
Fig. 137 – Pro II-TC-8 ISO Rev. E: Block diagram
Input channels
8
Sample rate
7Hz … 3500Hz
Thermocouple types, measuring range
and accuracy
B: 250°C … 1820°C; ±5°C
E: -200°C…1000°C; ±1°C
J: -210°C…1250°C; ±1°C
K: -200°C … 1372°C; ±1°C
N: -200°C…1300°C; ±2°C
R: -50°C … 1768°C; ±3°C
S: -50°C … 1768°C; ±3°C
T: -270°C … 400°C; ±1°C
Resolution
0.1°C
Input resistance
10M
Ω
Input filter
5Hz Butterworth
Input over-voltage
±20V
Fig. 138 – Pro II-TC-8 ISO Rev. E: Specifikation
ADwin-Pro
II
bus
1
2
8
......
Addr.
Addr.-
and
Data-
bus-
Logic
.....
A
D
LPF
2
nd
ord.
butter-
worth
5 Hz
X
J1
cold-junction aquisition
A
D
LPF
2
nd
ord.
butter-
worth
5 Hz
Data
A
D
LPF
2
nd
ord.
butter-
worth
5 Hz
.....
OFF PE
J2
OFF PE
J8
OFF PE
