OM-USB-TEMP-AI User's Guide
Specifications
31
Current excitation outputs (±Ix, T0x-T3x)
Table 22. Current excitation output specifications
Parameter
Conditions
Specification
Configuration
2 dedicated pairs:
±I1: T0x/T1x
±I2: T2x/T3x
Thermistor
10 µA
Current excitation output ranges
RTD
210 µA
Tolerance
±5.0%
Drift
200 ppm/°C
Line regulation
2.1 ppm/V maximum
Load regulation
0.3 ppm/V
Output compliance voltage
(relative to GND pins 9, 19, 22,
27, 30, 33, 36, 39)
3.90 V maximum
-0.03 V minimum
Note 22:
The OM-USB-TEMP-AI has two current excitation outputs, with ±I1 dedicated to the T0x/T1x
analog inputs, and ±I2 dedicated to T2x/T3x. The excitation output currents should always be
used in this dedicated configuration.
Note 23:
The current excitation outputs are automatically configured based on the sensor (thermistor or
RTD) selected.
Environmental
Table 23. Environmental specifications
Operating temperature range
0 to 55 ° C maximum
Storage temperature range
-40 to 85 ° C maximum
Humidity
0 to 90% non-condensing maximum
Mechanical
Table 24. Mechanical specifications
Dimensions
127 mm (L) x 88.9 mm (W) x 35.56 (H)
User connection length
3 meters maximum