Omega Vehicle Security HHTFO manual Acquiring and viewing temperature data

Page 26

Warning: Doing a temperature offset adjustment on a channel will alter its reading. In effect, it alters the thermometer own calibration. It must be used with care!

To perform an offset adjustment, follow these instructions:

1- Click the “Offset Adjust” button ( ) that is just next to the channel number you want to calibrate. The following menu window is available:

2- Type in the “Set Point” box the actual temperature that you would like to force for this channel (this temperature is normally obtained using an accurate NIST-certified primary temperature reference).

3- Press the “OK” button to activate the reference temperature. The “Offset” value will reset to its new value, as a result of your new forced temperature; this new offset is now displayed in the main window.

4- To reset this forced temperature setting, go back to the “Channel Offset” window, and click the Clear button.

5- Repeat the same procedure for the other channels that you want to modify.

8.3 Acquiring and viewing temperature data

Once all your thermometers are properly connected and configured, you may want to log data to a file, or to display their values on screen. A number of tools are available for that.

To view or acquire data, the “Acquisition” pane must be active.

8.3.1 Logging temperature data to a file

FOB100-SOFT offers the possibility to log temperature values to an Excel compatible file. The default file extension is .tem; this file can be subsequently open using Excel, which should open it and automatically recognize as an Excel compatible file (tab delimited).

The parameters that are useful to control the logging are shown in the lower left portion of the window, as shown here:

To set the logging filename, click on “SAVE AS…”; this allows you to enter a file name. For information, the current filename is displayed just below this button.

To set the acquisition rate, enter a number, in seconds, in the appropriate text box. Rate can be set from 0.2 to 3600 seconds.

26

Image 26
Contents Hhtfo Page Introduction Page Introduction Hhtfo product specifications VDCCalibration Unpacking OptionsInstalling batteries Quick IntroductionMaking your first meaasurements Keypad operation Hhtfo Thermometer Hardware ReferennceDisplay description Logging menu Using the backlightSetup menu File naming convention Format sub-menuIcon definition Enable sub-menuStarting and stopping a logging session Rate sub-menu10 RS232 communication interface Power jackProbe connector Using Temperature Probes DescriptionPage RS-232 help menu Using Hyper Terminal in WindowsSerial Communication Description Detailed description of RS-232 commands HHTFO101HHTFO111A Typical temperature reading sequence Error Codes Analog Out DescriptionQuick tour of FOB100-SOFT Installing FOB100-SOFTGetting started with FOB100-SOFT Hardware and software requirementsWorking with the Configuration Window Adjusting a temperature offset Acquiring and viewing temperature data Logging temperature data to a fileYour mouse to widen this column Viewing temperature data Displaying temperature trendsDisplaying analog values dials Displaying analog thermometersDisplaying digital values FOB100 Console File menu FOB100-SOFT functionsConsole help menu Find Instruments RefreshWindow menu Help Menu