Introducing The Om-Usb-Tc-Ai; Overview: Om-Usb-Tc-Ai Features - Omega OM-USB-TC-AI User Manual

Introducing the OM-USB-TC-AI

Overview: OM-USB-TC-AI features

This user's guide contains all of the information you need to connect the OM-USB-TC-AI to your computer and
to the signals you want to measure.
The OM-USB-TC-AI is a USB 2.0 full-speed, thermocouple input module that is supported under popular
® ®
Microsoft Windows
USB 2.0 ports.
The OM-USB-TC-AI provides eight analog input channels that are configured as four differential temperature
inputs and four differential or single-ended voltage inputs. A 24-bit analog-to-digital (A/D) converter is
provided for each pair of analog inputs. 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.
The temperature channels are software programmable for different thermocouple types. You can take
measurements from type J, K, R, S, T, N, E, and B thermocouples.
The voltage input range is software programmable for ±10 V, ±5 V, ±2.5 V, ±1.25 V.
The OM-USB-TC-AI provides a integrated cold junction compensation (CJC) sensor for thermocouple
measurements. An open thermocouple detection feature lets you detect a broken thermocouple.
The OM-USB-TC-AI features eight independent temperature alarms. Each alarm controls an associated digital
I/O channel as an alarm output. The input to each alarm is one of the temperature input channels. The output of
each alarm is software configurable as active high or low. You set up the temperature threshold conditions to
activate each alarm. When an alarm is activated, the associated DIO channel is driven to the output state.
An on-board microprocessor automatically linearizes the measurement data.
The OM-USB-TC-AI 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 OM-USB-TC-AI is fully software calibrated.
operating systems. The OM-USB-TC-AI is fully compatible with both USB 1.1 and
5
Chapter 1