Omega CTXL-TRH-W-W9, User Manual

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PC Interface Software
3
3-6
3.7 Changing Process Current Input Range (Model CTXL-DPR-I)
The dual process current input model CTXL-DPR-I can accommodate 4-20mA
and 0-20mA input range. The factory default setting is 4-20mA current input.
You can configure the recorder for other current input range (0-20mA) from the
PC without re-calibration as follows:
Once the PC is connected to the recorder thru RS232 cable, use the following PC
commands (in Bold):
Command Description Example
IP3 Change to 4-20mA IP3; Toggle Power to use new input type
IP4 Change to 0-20mA IP4; Toggle Power to use new input type
After issuing the command, the response is “Toggle Power to use new input
type” which means to turn off recorder and then turn it on for the command to
take affect. At the power up, the LCD screen always shows the current input
range for two seconds. This is the way to confirm current input range.
3.8 PC User Application, CTXL-TRH
The CTXL-TRH temperature/relative humidity circular chart recorder comes
with a Windows based user application. This application allows you to perform
the following functions:
• Monitor temperature & relative humidity in real time based on 1 hour, 1 Day,
7 Days, and 32 Days Chart.
• Save the temperature/relative humidity data to a file.
• Select the Pen colors for the two channels on the screen
• Select the Upper & Lower values for the two channels, Auto scale, or
Logarithmic scale.
• Re-scale the chart paper to any other value within the channel range.
• Re-calibrate the humidity channel at 33% & 75%.
• Download the recorded data from the chart recorder into a file.
• Erase the recorded data from the chart recorder.
• Print temperature and relative humidity screen graphs to a printer.