Measurement-computing WLS-TEMP Instrukcja Użytkownika Pobierz pdf (Strona 30)

WLS-TEMP Specifications

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

1 2 ... 25 26 27 28 29 30 31 32 33 34

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