Measurement Computing WLS-TEMP - Manual (Page 30)

WLS-TEMP Specifications
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USB specifications
Table 17. USB specifications
Parameter Specification
USB device type USB 2.0 (full-speed)
Device compatibility USB 1.1, USB 2.0
Bus powered, 500 mA consumption max
USB cable type A-B cable, UL type AWM 2725 or equivalent. (min 24 AWG VBUS/GND,
min 28 AWG D+/D–)
USB cable length 3 m (9.84 ft) max
Current excitation outputs (Ix+)
Table 18. Current excitation output specifications
Parameter Specification
Configuration 4 dedicated pairs:
±I1: CH0/CH1
±I2: CH2/CH3
±I3: CH4/CH5
±I4: CH6/CH7
Current excitation output ranges Thermistor: 10 µA typ
RTD: 210 µA typ
Tolerance ±5% typ
Drift 200 ppm/°C
Line regulation 2.1 ppm/V max
Load regulation 0.3 ppm/V typ
Output compliance voltage (relative to
GND pins 9, 19, 28, 38) 3.90 V max
–0.03 V min
Note 19: The device 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.
Note 20: The current excitation outputs are automatically configured based on the sensor selected
(thermistor or RTD).
Environmental
Table 19. Environmental specifications
Parameter Specification
Operating temperature range 0 °C to 70 °C
Storage temperature range –40 °C to 85 °C
Humidity 0% to 90% non-condensing
Mechanical
Table 20. Mechanical specifications
Parameter Specification
Dimensions (L × W × H) 128.52 x 88.39 × 35.56 mm (5.06 × 3.48 × 1.43 ft)
User connection length 3 m (9.84 ft) max