ETAS ES930.1 - Page 93

ETAS Technical Data
ES930.1 - User Guide 93
13.9.3 Thermo Channels ("TH1-4" Connections)
Reference temperature T
0
for T
d
is 25 °C (corresponds to 298.15 K)
Number of channels 4
Supported thermocouples Type K
Measuring range -200 °C to +1372 °C (type K)
Resolution 1 mK (24 bit; Sigma-Delta A/D con
-
verter)
Sampling rate 0.1 samples/s to 10 samples/s, addi
-
tionally events; configurable per chan
-
nel
Anti-aliasing filter (hardware filter) Low-pass, 1st order, 3 dB limit fre-
quency 350 Hz
Common-mode voltage ±100 V to ground of supply voltage
Max. measurement error (at room
temperature)
±(1.5 K + 0.5% * (T
meas
- 25 °C))
Maximum measurement error T
i
for
internal resistances of thermo coupler
> 50
,
±0.002 K/
Maximum temperature drift T
d
±0.05 K/K
Input impedance 20 M || 250 nF
Maximum input voltage Input, "+" to "-":
±5 V DC
Input-to-input:
60 V DC / 30 V AC
Input-to-ground of voltage supply:
60 V DC / 30 V AC
Input-to-housing:
60 V DC / 30 V AC
Electrical isolation Input-to-input, input-to-supply voltage,
input-to-housing