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USB-4718 8-ch Thermocouple Input USB Module
Supports USB 2.0
Support voltage, current, and thermocouple inputs
Bus-powered
8 thermocouple input channels
2,500 V
DC
isolation
Support 4 ~ 20 mA current output
Wiring terminal on modules
8-ch isolated DI and 8-ch isolated DO
Suitable for DIN-rail mounting
Lockable USB cable for rigid connection
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. USB-4718 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 Onboard screw terminal
Dimensions (Lx W x H) 132 x 80 x 32 mm
Power Consumption 100 mA @ 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-ch Thermocouple Input USB Module, one 1.8 m USB
2.0 cable included
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
(71 pages)
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