The TV2 Alarm displays four temperature, humidity or pressure readings along with the maximum and minimum conditions. The maximum and minimum readings can be reset at any time by touching the screen./p>
TThe color screen always indicates the safety status of each sensor. The current temperature along with the maximum and minimum points appear in green as long as the temperature is within the safe range. However, if any condition moves outside your limits it immediately turns red. span class="auto-style8">OOnce that condition moves back into the safe zone it again turns green. Because the color reflects the safety of the room or appliance a quick glance at the display is all you need to see if everything is OK or not.
The TV2 alarm/logger has an external, normally open (N/O), dry contact relay, to trigger a phone call, external alarm or other devices any time an alarm occurs. The optional Auto-Dialer calls several phone numbers to deliver or leave a message if an alarm occurs. The external relay can be wired into a building alarm system or used to trigger a powered external alarm.
The TV2 alarm/logger, has a number of alarms which have to do with the TV2 itself, and additional alarms for the conditions being monitored by the sensors. Any active alarm is indicated visually on the TV2 with a message, a blinking screen and in some cases a change of color.
Most alarms cause the external normally-open (N/O) dry-contact relay to close to trigger an auto dialer so that phone calls are made to alert the staff when ever an unsafe condition has occurred. Alarms can also initiate a Text or Email message.
All collected data is stored in non-volatile memory so even if you turn the TV2 alarm/logger off and come back 10 years later your data will still be there.
During power outages the rechargeable internal batteries (Lithium Ion) will continue to operate the TV2 for as long as 100 hours. And by operate we mean everything continues to work.
The TV2 Alarm can be used anywhere.
Since the TV2 Alarm can track four different temperatures and humidity readings simultaneously you only need one display to monitor four areas. This lowers the cost of monitoring multiple areas and means that you only have to look at one display to see what the current conditions are in each area. The picture at the right is one fourth of the current status display showing the conditions for one of the sensors along with the maximum and minimum temperature recorded. The current battery charge for the wireless sensor is also displayed.
In addition to the current status display you can see the historical conditions for each area or device being monitored. To look at logged data for one of the sensors simply touch the Easy Touch display.
With one touch on the display a data history chart immediately opens up so you can see what happened last night, last week, last month or even last year. To see additional history just touch the display again and scroll bars will appear on the chart. The chart can be scrolled to the left or right to show earlier data. It can also be zoomed into or out of to show much more historical information. The chart is not only paperless it is never ending. Once all of the non-volatile memory is filled with data the newer data will roll over oldest data, so you will always have the last 80,000 measurements stored from each sensor.
Being able to see the history makes it easy to spot trends. This is particularly useful for troubleshooting issues with refrigerators, freezers or areas in a warehouse or building.
Once the data is collected and stored in the non-volatile memory of the TV2 alarm it is impossible for the user to alter it. It can only be viewed or printed out, not changed.
Logged data can be downloaded to a PC and even saved as a file as an 256 bit encrypted file. And once saved it can only be viewed and/or printed out as a chart. If a user name and password have been entered the chart is digitally signed. The 'padlock' icon indicates that this has occurred. A signed file can only be opened if the same username and password are entered.
Once the encrypted TV2 data has been copied to a PC it can be exported in unencrypted form to Excel where it can be viewed and manipulated if the user wants to analyze it. In this case the data is not encrypted and no padlock or verification indication is shown. The padlock and verification pen only appears on printouts or on a computer screen if the data integrity has been maintained.
© 2009 Two Dimensional Instruments, LLC
(modified: July 18, 2016 10:07 AM)