Introducing The Usb-Temp; Overview: Usb-Temp Features - Measurement Computing USB-TEMP User Manual

Introducing the USB-TEMP

Overview: USB-TEMP features

This user's guide contains all of the information you need to connect the USB-TEMP to your computer
and to the signals you want to measure. The USB-TEMP is part of the Measurement Advantage™ brand
of USB-based data acquisition products.
The USB-TEMP is a USB 2.0 full-speed, temperature measurement module that is supported under
®
Microsoft Windows
TEMP is fully compatible with both USB 1.1 and USB 2.0 ports.
The USB-TEMP provides eight differential input channels that are software programmable for different
sensor categories including thermocouple, RTD's, thermistors and Semiconductor sensors. Eight
independent, TTL-compatible digital I/O channels are provided to monitor TTL-level inputs,
communicate with external devices, and to generate alarms. The digital I/O channels are software
programmable for input or output.
With the USB-TEMP, you can take measurements from four sensor categories:
! Thermocouple – types J, K, R, S, T, N, E, and B
! Resistance temperature detectors (RTDs) – 2, 3, or 4-wire measurements of 100 Ω platinum RTDs
! Thermistors – 2, 3, or 4-wire measurements
! Semiconductor temperature sensors – LM36 or equivalent
The USB-TEMP provides a 24-bit analog-to-digital (A/D) converter for each pair of differential analog
input channels. Each pair of differential inputs constitutes a channel pair.
You can connect a different category of sensor to each channel pair, but you can not mix categories
among the channels that constitute a channel pair (although it is permissible to mix thermocouple types).
The USB-TEMP provides two integrated cold junction compensation (CJC) sensors for thermocouple
measurements, and built-in current excitation sources for resistive sensor measurements.
An open thermocouple detection feature lets you detect a broken thermocouple. An on-board
microprocessor automatically linearizes the measurement data according to the sensor category.
The USB-TEMP is a standalone plug-and-play module which draws power from the USB cable. No
external power supply is required. All configurable options are software programmable.
The USB-TEMP is fully software calibrated.
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98 (2 edition), Windows ME, Windows 2000, and Windows XP. The USB-
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Chapter 1