Measurement-computing WLS-TEMP Manual de usuario Pagina 30
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WLS-TEMP Specifications
30
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
- User's Guide 1
- HM WLS-TEMP.docx 2
- Table of Contents 3
- Chapter 5 4
- About this User’s Guide 5
- Introducing the WLS-TEMP 6
- WLS-TEMP block diagram 7
- Installing the WLS-TEMP 8
- Configuring the hardware 9
- Calibrating the WLS-TEMP 11
- Warm up time 11
- Sensor Connections 12
- Thermocouple connections 13
- Wiring configuration 14
- Two-wire configuration 15
- Three-wire configuration 16
- Four-wire configuration 16
- Digital I/O connections 17
- WLS-TEMP Specifications 18
- Functional Details 19
- AC power supply 20
- External components 20
- Screw terminals 21
- USB connector 21
- Status LEDs 21
- LED Test button 22
- Specifications 23
- Channel configurations 24
- Compatible sensors 24
- Accuracy 25
- RTD measurement accuracy 26
- Digital input/output 27
- Temperature alarms 28
- Microcontroller 28
- Wireless communications 28
- USB +5V voltage 29
- USB specifications 30
- Environmental 30
- Mechanical 30
- LED / button configuration 31
- Screw terminal connector 32
- Declaration of Conformity 33
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