YUAA Performance
Channel
Configuration
Rating
mA/HART Inputs
4 to 20 mA at 0.1% accuracy over temperature range
In presence of severe conducted RF interference (IEC 61000-4-6, 10 V rms), the accuracy may degrade to 1.5%.
In presence of severe radiated RF interference (IEC 61000-4-3, 10 V/m), internal wetted mA input accuracy may
degrade to 2% and external wetted mA input accuracy may degrade to 20%.
Voltage Inputs
± 5 V dc or ±10 V dc at 0.1% accuracy over temperature range
mA Outputs
0 to 20 mA with 0.5% accuracy, compliance up to 18 V dc with 22 V or higher field supply
0-800 ohm load with current monitoring as a variable OutxxMA with 3% accuracy
In the presence of severe radiated RF interference (IEC 61000-4-3, 10 V/m), the accuracy may degrade to 3%.
Thermocouple Inputs
E, J, K, S, T, B, N, R thermocouples with 0.1 % measurement accuracy of full scale
Caution
The CJC sensor accuracy varies with the amount of power
dissipated in the YUAA package. For a setting of 16
thermocouples, the CJC provide 2
°°
F accuracy. For best
accuracy with local CJC, mount the YUAA at the bottom of
the cabinet far from higher power devices or YUAA using
higher power modes. If combining thermocouples with high
power modes such as mA outputs, the CJC may degrade in
accuracy up to 4
°°
F. A practical limit on mixing modes is to
limit up to 8 mA outputs on any YUAA with other channels
set for thermocouples.
For best accuracy it is recommended that remote cold
junctions be used due to heat dissipation from analog
outputs and input modes. The remote cold junction value
may be from either RTD channels on the same YUAA with
variables passed to application code or from other devices
read by the application code such as another YUAA.
RSS Accuracy of 53 uV on 45 mV span (E, J, K, S, T)
RSS Accuracy of 115 uV on 95 mV span (B, N, R)
Open wire detection is supported
Wiring Resistance: round trip between channel terminals is less than 100 ohms for full accuracy
RTD Inputs
120 ohm Nickel ± 2°F at 400 °F
100 ohm Platinum ± 4°F at 400 °F
200 ohm Platinum ± 2°F at 400 °F
10 ohm Copper ± 10 °F at 400 °F
Resistance up to 450 ohms
Scan time: 500 ms
In the presence of severe conducted RF interference (IEC 61000-4-6, 10 V rms), the resistance accuracy may degrade
to 2%. The associated temperature accuracy will similarly vary with the amount based on the type of sensor.
Discrete Inputs
10 to 20 V external wetted switches into 12.5 Kohm internal load
Sequence of Event (SOE) tagging per I/O frame for first, second, and last change with 1 msec resolution
22 to 30 V external wetted switches using a series or a series-parallel set of 8.2 Kohm resistors
Line monitoring (open/short detection) is optional for external wetting using two 8.2 Kohm resistors at contact
Line monitoring (open/short detection) is not supported on > 20 V external wetted switches
Internal wetted switches with 10 mA contact current, 22 V open contact voltage
Line monitoring (open/short detection) is optional for internal wetting using two 240 ohm resistors at contact
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