What's the difference between a data viewer and a chart
recorder?
Data Viewers and Chart Recorders are two different types of
temperature monitors.
Chart recorders are mechanical instruments that use a pen to
draw a line on a paper chart that indicates the temperature
record over some period of time. Charts can cover a day, a week
or even a month but must be changed when the time is up or the
next days data will overwrite the previous temperature data.
Many people are moving to electronic devices such as data
viewers to eliminate the ongoing expense of charts and pens, not
to mention the constant need for maintenance to insure that the
chart recorder is operating properly.
Data Viewers are all-electronic
Data Viewers such as the ThermaViewer completely eliminate the
need for charts, pens or maintenance. They collect temperature
data through sensors, which they store electronically in RAM
memory. The better ones also draw a chart on an LCD so that the
user can see what has been going on with the temperature.
The ThermaViewer eliminates the need for maintenance.
The ThermaViewer can store and display ten months of temperature
data from each of its two sensors on the LCD display. The user
can see enough temperature history so that trends are obvious.
These all electronic devices also have built in relays to
trigger an alarm or auto dialer if the temperature strays
outside of user set parameters.
Temperature monitors are extremely important for many industries.
Many industries need temperature monitors to comply with
regulations and for safety reasons. For example, laboratories
and hospitals must monitor refrigerators and freezers where they
have medicine, vaccines, or tissue samples stores. In these
cases it is not only important to monitor the temperature to
comply with government regulations but it is critical that the
viability of the vaccine be maintained. If the vaccines get too
warm they lose their effectiveness and won't perform their
proper functions.