Microcontroller. Omega OM-USB-TEMP

OM-USB-TEMP User's Guide Specifications

Current excitation outputs (Ix+)

Table 16. Current excitation output specifications

Parameter Conditions Specification

Configuration

Current excitation output ranges

Tolerance

Drift

Line regulation

Load regulation

Output compliance voltage

(relative to GND pins 9, 19, 28, 38)

Thermistor

RTD

4 dedicated pairs:

±I1 - CH0/CH1

±I2 - CH2/CH3

±I3 - CH4/CH5

±I4 - CH6/CH7

10 µA typ.

210 µA typ.

±5% typ.

200 ppm/°C

2.1 ppm/V max.

0.3 ppm/V typ.

3.90 V max.

-0.03 V min.

Note 18:

Note 19:

The OM-USB-TEMP has four current excitation outputs, with ±I1 dedicated to the CH0/CH1 analog inputs, ±I2 dedicated to CH2/CH3, ±I3 dedicated to CH4/CH5, and ±I4 dedicated to

CH6/CH7. The excitation output currents should always be used in this dedicated configuration.

The current excitation outputs are automatically configured based on the sensor (thermistor or

RTD) selected.

Environmental

Operating temperature range

Storage temperature range

Humidity

Table 17. Environmental specifications

0 to 70 ° C

-40 to 85 ° C

0 to 90% non-condensing

Mechanical

Dimensions

User connection length

Table 18. Mechanical specifications

127 mm (L) x 88.9 mm (W) x 35.56 (H)

3 meters max.

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