USB data acquisition card with 8 inputs that support up to 4 different temperature sensors (Thermocouple / RTD / Thermistor or semiconductor) / 8 digital inputs and outputs. With configuration software / monit
The USB-TEMP is a USB 2.0 full-speed, temperature measurement module that is supported under popular Microsoft® Windows® operating systems. The USB-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, RTDs, thermistors and Semiconductor sensors. Eight independent, TTLcompatible digital I/O channels are provided to monitor TTL-level inputs and to communicate with external devices. The digital I/O channels are software programmable for input or output.
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 O platinum RTDs
- Thermistors – 2, 3, or 4-wire measurements
- Semiconductor temperature sensors – LM35, TMP35 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 cannot 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.
- Temperature and voltage measurements
- Thermocouples, RTDs, thermistors, semiconductor sensors
- 8 analog inputs
- 24-bit resolution
- 8 digital I/O
- 1 event counter
The device screw terminals are identified in Figure. Between each bank of screw terminals are two integrated CJC sensors used for thermocouple measurements.