V 2 0 0 - 1 8 - E 3 X B
S n a p - i n I / O M o d u l e
6 / 0 5
PT100 inputs
Input range
-200 to 600
q
C/-328 to 1100
q
F. 1 to 320
ȍ
. See Note 8.
Conversion method
Voltage to frequency
Resolution
0.1
q
C/0.1
q
F
Conversion time
200mS minimum per channel, depending on software filter type
Input impedance
>10M
ȍ
Auxillary current for PT100
150
μ
A typical
Full-scale error
±0.4%
Linearity error
±0.04%
Status indication
Yes. See Note 9.
Notes:
8.
The device can also measure resistance with the range of 1-320
ȍ
at a resolution of 0.1
ȍ
.
9.
The analog value can indicate faults as shown below:
Value Possible
Cause
32767 - Sensor is not connected to input
- Value exceeds permissible range
- Power supply disconnected
-32767 Sensor is short-circuited
Thermocouple inputs
Input range
As shown in the table on page 15. See Note 10.
Conversion method
Voltage to frequency
Resolution
0.1
q
C/0.1
q
F maximum
Conversion time
100mS minimum per channel, depending on software filter type
Input impedance
>10M
ȍ
Cold junction compensation
Local, automatic
Cold junction compensation
error
±1.5
q
C / ±2.7
q
F maximum
Absolute maximum rating
±0.6VDC
Full-scale error
±0.4%
Linearity error
±0.04%
Warm-up time
½ hour typically, ±1
q
C/±1.8
q
F repeatability
Status indication
Yes. See Note 11.
Notes:
10. The device can also measure voltage within the range of -5 to 56mV, at a resolution of 0.01mV.
The device can also measure raw value frequency at a resolution of 14-bits(16384)
11. The analog value can indicate faults as shown below:
Value Possible
Cause
32767 - Sensor is not connected to input
- Sensor value exceeds the maximum value
- Power supply disconnected
-32767 Sensor value is under the minimum value
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Spectra (Schweiz) AG
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