Datasheet

Features
www.advantech.com/products
Online Download
All product specifications are subject to change without notice Last updated : 20-Jan-2006
NEW
USB-4718 8-channel Thermocouple Input USB Module
 Supports USB 2.0
 Support voltage, current, and thermocouple inputs
 No need for the external power
 8 thermocouple input channels
 2,500 V
DC
isolation
 Supports 4~20 mA
 Wiring terminal on modules
 8-ch isolated DI and 8-ch isolated DO
Introduction
The USB-4700 series consists of true Plug & Play data acquisition devices. No more opening up your computer chassis to install boards-just plug in the module, then get the data.
It’s easy and efficient. USB4718 offers 8 thermocouple inputs with 16-bit resolution, up to 0.1% input range accuracy, or 4~20 mA inputs.
Reliable and rugged enough for industrial applications, yet inexpensive enough for home projects, the USB-4718 is the perfect way to add measurement and control capability to any USB
capable computer. The USB-4718 is fully USB plug and play and easy to use. It obtains all required power from the USB port, so no external power connection is ever required.
Specifications
Analog Input
 Accuracy ±0.1% for voltage input
 Bandwidth 13.1 Hz @ 50 Hz,
15.72 Hz @ 60 Hz
 Channels Eight differential
 Ch. Independent Conf. Yes
 CMR @ 50/60 Hz 92 dB min.
 Resolution 16 bits
 Input Impedance 20 MΩ
 lnput Range 0~15 mV, 0~50 mV, 0~100 mV, 0~500 mV,
0~1 V, 0~2.5 V, 0~20 mA, 4~20 mA
 lnput Types Thermocouple, mV, V, mA
 Sampling Rate 10 samples/sec. (total)
 Span Drift ±25 ppm/° C
 T/C Type and Temperature Ranges
J
0 ~ 760° C
R
500 ~1750° C
K
0 ~ 1370° C
S
500 ~1750° C
T
-100 ~ 400° C
B
500 ~1800° C
E
0 ~ 1000° C
 TVS/ESD Protection Built-in
 Zero Drift ±3 µV/° C
Isolated Digital Input
 Channels 8
 Input Voltage Logic 0: 2 V max.
Logic 1: 5 V min. (30 V max.)
 Isolation Protection 2,500 V
DC
 Opto-Isolator Response 25 µs
Isolated Digital Output
 Channels 8
 Output Type Sink (NPN)
 Isolation Protection 2,500 V
DC
 Output Voltage 5 ~ 30 V
DC
, 1.1 A max/total
 Sink Current 200 mA max./channel
 Opto-isolator Response 25 µs
General
 Bus Type USB 2.0
 I/O Connector On board screw terminal
 Dimensions (LxWxH): 132 x 80 x 32 mm
 Power Consumption 0.1 A @ 5 V
 Power Input 5 V from USB line
 Watchdog Timer 1.6 sec. (system)
 Operating Temperature 0 ~ 60° C (32 ~ 140° F) (refer to IEC 68-2-1, 2)
 Storing Temperature -20 ~ 70° C (-4 ~ 158° F)
 Storing Humidity 5 ~ 95% RH non-condensing (refer to IEC 68-2-3)
Ordering Information
 USB-4718 8-channel Thermocouple Input USB Module, CD,
manual and one 1.8m USB 2.0 cable included