OM-USB-TEMP-AI User's Guide
Installing the OM-USB-TEMP-AI
10
Installing the software
Refer to the
OMB-DAQ-2416 Series and OM-USB Series Data Acquisition Software User’s Guide
for
instructions on installing
the software on the
OMB-DAQ-2416 Series and OM-USB Series Data Acquisition
Software
CD. This booklet is available in PDF at
http://omega.com/manuals
.
We recommend that you download the latest Windows Update onto your computer before installing and
operating the OM-USB-TEMP-AI.
Installing the OM-USB-TEMP-AI
To connect the OM-USB-TEMP-AI to your system, turn your computer on, and connect the USB cable to a
USB port on your computer or to an external USB hub that is connected to your computer. The USB cable
provides power and communication to the OM-USB-TEMP-AI.
When you connect the OM-USB-TEMP-AI for the first time, a notification message opens as the OM-USB-
TEMP-AI is detected. When the message closes, the installation is complete. The
USB LED
should flash and
then remain lit. This indicates that communication is established between the OM-USB-TEMP-AI and your
computer.
If the LED turns off
If the LED is lit but then turns off, the computer has lost communication with the OM-USB-TEMP-AI. To
restore communication, disconnect the USB cable from the computer, and then reconnect it. This should restore
communication, and the LED should turn back
on
.
Configuring the OM-USB-TEMP-AI
All hardware configuration options on the OM-USB-TEMP-AI are programmable with software. Use
Insta
Cal
to set the sensor type for each temperature channel and the range and input configuration of each voltage
channel. Any channel you don’t intend to use should be left disabled.
The configurable options dynamically update according to the selected sensor category. Configuration options
are stored on the OM-USB-TEMP-AI 's isolated microcontroller in EEPROM, which is non-volatile memory on
the OM-USB-TEMP-AI module. Configuration options are loaded on power up.
Default configuration
The factory default configuration is
Disabled
. The Disabled mode disconnects the analog inputs from the
terminal blocks and internally grounds all of the A/D inputs. This mode also disables each of the current
excitation sources.
Warm up
Allow the OM-USB-TEMP-AI to warm up for 30 minutes before taking measurements. This warm up time
minimizes thermal drift and achieves the specified rated accuracy of measurements.
For analog, RTD or thermistor measurements, this warm-up time is also required to stabilize the internal current
reference.
Calibrating the OM-USB-TEMP-AI
The OM-USB-TEMP-AI is fully calibrated via software.
Insta
Cal prompts you to run its calibration utility
when you change from one sensor category to another.
Allow the OM-USB-TEMP-AI to operate for at least 30 minutes before calibrating. This warm up time
minimizes thermal drift and achieves the specified rated accuracy of measurements.
